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05-13 21:22 - 'Hello. I want to buy the last clif report on Humanhalfpast.com but i havent been able to find the email address where i have to send the btc payment support. Could someone help me??' by /u/smedinav removed from /r/Bitcoin within 325-335min
This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/ Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners? And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess. First, let's consider some principles of Bitcoin.
You the HODLer should be the one who controls where your money goes. Your keys, your coins.
You the HODLer should be able to coordinate and make contracts with other people regarding your funds.
You the HODLer should be able to do the above without anyone watching over your shoulder and judging you.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so). So, how does Taproot affect those principles?
Taproot and Your /Coins
Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash). (technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input). However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits! Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh? With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save! And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well! (P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1) Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service! So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win! (even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot) And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!
Taproot and Your Contracts
No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade. So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust. Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade. However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade. In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address. Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants). But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer). Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos). (technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).
Taproot and Your Contracts, Part 2: Cryptographic Boogaloo
Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code. This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded. And you can do that, with HTLCs, today. Of course, HTLCs do have problems:
Privacy. Everyone scraping the Bitcoin blockchain can see any HTLCs, and preimages used to claim them.
This can be mitigated by using offchain techniques so HTLCs are never published onchain in the happy case. Lightning would probably in practice be the easiest way to do this offchain. Of course, there are practical limits to what you can pay on Lightning. If you are buying something expensive, then Lightning might not be practical. For example, the "software" you are activating is really the firmware of a car, and what you are buying is not the software really but the car itself (with the activation of the car firmware being equivalent to getting the car keys).
Even offchain techniques need an onchain escape hatch in case of unresponsiveness! This means that, if something bad happens during payment, the HTLC might end up being published onchain anyway, revealing the fact that some special contract occurred.
And an HTLC that is claimed with a preimage onchain will also publicly reveal the preimage onchain. If that preimage is really the activation key of a software than it can now be pirated. If that preimage is really the activation key for your newly-bought cryptographic car --- well, not your keys, not your car!
Trust requirement. You are trusting the developer that it gives you the hash of an actual valid activation key, without any way to validate that the activation key hidden by the hash is actually valid.
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar". Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given public key to you. Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige). (Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key). So:
Privacy: PTLCs are private even if done onchain. Nobody else can learn what the private key behind the public key is, except you who knows the adaptor signature that when combined with the complete onchain signature lets you know what the private key of the activation key is. Somebody scraping the blockchain will not learn the same information even if all PTLCs are done onchain!
Lightning is still useful for reducing onchain use, and will also get PTLCs soon after Taproot is activated, but even if something bad happens and a PTLC has to go onchain, it doesn't reveal anything!
Trust issues can be proven more easily with a public-private keypair than with a hash-preimage pair.
For example, the developer of the software you are buying could provide a signature signing a message saying "unlock access to the full version for 1 day". You can check if feeding this message and signature to the program will indeed unlock full-version access for 1 day. Then you can check if the signature is valid for the purported pubkey whose private key you will pay for. If so, you can now believe that getting the private key (by paying for it in a PTLC) would let you generate any number of "unlock access to the full version for 1 day" message+signatures, which is equivalent to getting full access to the software indefinitely.
For the car, the manufacturer can show that signing a message "start the engine" and feeding the signature to the car's fimrware will indeed start the engine, and maybe even let you have a small test drive. You can then check if the signature is valid for the purported pubkey whose privkey you will pay for. If so, you can now believe that gaining knowledge of the privkey will let you start the car engine at any time you want.
(pedantry: the signatures need to be unique else they could be replayed, this can be done with a challenge-response sequence for the car, where the car gathers entropy somehow (it's a car, it probably has a bunch of sensors nowadays so it can get entropy for free) and uses the gathered entropy to challenge you to sign a random number and only start if you are able to sign the random number; for the software, it could record previous signatures somewhere in the developer's cloud server and refuse to run if you try to replay a previously-seen signature.)
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script. (technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)
Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable?? Well, in theory yes. In practice, they probably are not. It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash. When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key. So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key. (public keys should be public, that's why they're called public keys, LOL) And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions. So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort. Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers. For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
Current quantum computers can barely crack prime factorization problem for primes of 5 bits.
The 256-bit elliptic curve use by Bitcoin is, by my (possibly wrong) understanding, equivalent to 4096-bit primes, so you can see a pretty big gap between now (5 bit primes) and what is needed (4096 bit primes).
A lot of financial non-Bitcoin systems use the equivalent of 3072-bit primes or less, and are probably easier targets to crack than the equivalent-to-4096-bit-primes Bitcoin.
Quantum computers capable of cracking Bitcoin are still far off.
Pay-to-public-key-hash is not as protective as you might think.
We will probably see banks get cracked before Bitcoin, so the banking system is a useful canary-in-a-coal-mine to see whether we should panic about being quantum vulnerable.
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).
If you are a singlesig HODL-only Bitcoin user, Taproot will not affect you positively or negatively. Importantly: Taproot does no harm!
If you use or intend to use multisig, Taproot will be a positive for you.
If you transact onchain regularly using typical P2PKH/P2WPKH addresses, you get a minor reduction in feerates since multisig users will likely switch to Taproot to get smaller tx sizes, freeing up blockspace for yours.
If you are using multiparticipant setups for special systems of trade, Taproot will be a positive for you.
Remember: Lightning channels are multipartiicpiant setups for special systems of lightning-fast offchain trades!
I Wanna Be The Taprooter!
So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!
If you have developer experience especially in C, C++, or related languages
Review the Taproot code! There is one pull request in Bitcoin Core, and one in libsecp256k1. I deliberately am not putting links here, to avoid brigades of nontechnical but enthusiastic people leaving pointless reviews, but if you are qualified you know how to find them!
But I am not a cryptographeBitcoin Core contributomathematician/someone as awesome as Pieter Wuille
That's perfectly fine! The cryptographers have been over the code already and agree the math is right and the implementation is right. What is wanted is the dreary dreary dreary software engineering: are the comments comprehensive and understandable? no misspellings in the comments? variable names understandable? reasonable function naming convention? misleading coding style? off-by-one errors in loops? conditions not covered by tests? accidental mixups of variables with the same types? missing frees? read-before-init? better test coverage of suspicious-looking code? missing or mismatching header guards? portability issues? consistent coding style? you know, stuff any coder with a few years of experience in coding anything might be able to catch. With enough eyes all bugs are shallow!
If you are running a mining pool/mining operation/exchange/custodial service/SPV server
Be prepared to upgrade!
One of the typical issues with upgrading software is that subtle incompatibilities with your current custom programs tend to arise, disrupting operations and potentially losing income due to downtime. If so, consider moving to the two-node setup suggested by gmax, which is in the last section of my previous post. With this, you have an up-to-date "public" node and a fixed-version "private" node, with the public node protecting the private node from any invalid chainsplits or invalid transactions. Moving to this setup from a typical one-node setup should be smooth and should not disrupt operations (too much).
If you are running your own fullnode for fun or for your own wallet
Be prepared to upgrade! The more nodes validating the new rules (even if you are a non-mining node!), the safer every softfork will be!
If you are using an SPV wallet or custodial wallet/service (including hardware wallets using the software of the wallet provider)
Contact your wallet provider / SPV server and ask for a statement on whether they support Taproot, and whether they are prepared to upgrade for Taproot! Make it known to them that Taproot is something you want!
But I Hate Taproot!!
Raise your objections to Taproot now, or forever hold your peace! Maybe you can raise them here and some of the devs (probably nullc, he goes everywhere, even in rbtc!) might be able to see your objections! Or if your objections are very technical, head over to the appropriate pull request and object away!
Maybe you simply misunderstand something, and we can clarify it here!
Or maybe you do have a good objection, and we can make Taproot better by finding a solution for it!
/r/Monero Weekly Discussion – July 11, 2020 - Use this thread for general chatter, basic questions, and if you're new to Monero
Wallet: CLI & GUI
1. General questions
Where can I download the Monero wallet?
There are multiple Monero wallets for a wide range of devices at your disposal. Check the table below for details and download links. Attention: for extra security make sure to calculate and compare the checksum of your downloaded files when possible. Please note the following usage of the labels: ⚠️ - Relatively new and/or beta. Use wallet with caution. ☢️ - Closed source.
"Official" GUI / CLI
Windows, macOS, Linux
Default implementation maintained by the core team. Use this wallet to run a full node and obtain maximum privacy. Integrates with hardware wallets. Current version: 0.15.0.1 / 0.15.0.4.
Your balance is unlocked after 10 confirmations (which means 10 mined blocks). A block is mined approximately every two minutes on the Monero network, so that would be around 20 minutes.
How can I prove that I sent a payment?
The fastest and most direct way is by using the ExploreMonero blockchain explorer. You will need to recover the transaction key from your wallet (complete guide for GUI / CLI).
How do I buy Monero (XMR) with Bitcoin (BTC)?
There are dozens of exchanges that trade Monero against Bitcoin and other cryptocurrencies. Check out the list on CoinMarketCap and choose the option that suits you best.
How do I buy Monero (XMR) with fiat?
Kraken (USD and EUR): old-school, decent exchange. They might require your documents for verification and approval of your account.
LocalMonero: peer-to-peer exchange. They have pretty much everything as a payment method and they support hundreds of fiat options.
How can I quickly exchange my Monero (XMR) for Bitcoin (BTC)?
There are multiple ways to exchange your Monero for Bitcoin, but first of all, I'd like to remind you that if you really want to do your part for Monero, one of the simplest ways is to get in touch with your merchant/service provider and request for it to accept Monero directly as payment. Ask the service provider to visit the official website and our communication channels if he or she needs help with system integration. That being said, the community has been recommending two services in particular, XMR.TO and MorphToken. These services are only recommendations and are operated by entities outside the control of the Monero Project. Be diligent.
How do I mine Monero? And other mining questions.
The correct place to ask questions and discuss the Monero mining scene is in the dedicated subreddit MoneroMining. That being said, you can find a list of pools and available mining software in the GetMonero.org website.
2. Wallet: CLI & GUI
Why I can't see my balance? Where is my XMR?
Before any action there are two things to check:
Are you using the latest available version of the wallet? A new version is released roughly every 6 months, so make sure you're using the current release (compare the release on GetMonero.org with your wallet's version on Settings, under Debug info).
Is your wallet fully synchronized? If it isn't, wait the sync to complete.
Because Monero is different from Bitcoin, wallet synchronization is not instant. The software needs to synchronize the blockchain and use your private keys to identify your transactions. Check in the lower left corner (GUI) if the wallet is synchronized. You can't send transactions and your balance might be wrong or unavailable if the wallet is not synced with the network. So please wait. If this is not a sufficient answer for your case and you're looking for more information, please see this answer on StackExchange.
Why does it take so long to sync the wallet [for the first time]?
You have decided to use Monero's wallet and run a local node. Congratulations! You have chosen the safest and most secure option for your privacy, but unfortunately this has an initial cost. The first reason for the slowness is that you will need to download the entire blockchain, which is considerably heavy (+70 GB) and constantly growing. There are technologies being implemented in Monero to slow this growth, however it is inevitable to make this initial download to run a full node. Consider syncing to a device that has an SSD instead of an HDD, as this greatly impacts the speed of synchronization. Now that the blockchain is on your computer, the next time you run the wallet you only need to download new blocks, which should take seconds or minutes (depending on how often you use the wallet).
I don't want to download the blockchain, how can I skip that?
The way to skip downloading the blockchain is connecting your wallet to a public remote node. You can follow this guide on how to set it up. You can find a list of public remote nodes on MoneroWorld. Be advised that when using a public remote node you lose some of your privacy. A public remote node is able to identify your IP and opens up a range for certain attacks that further diminish your privacy.A remote node can't see your balance and it can't spend your XMR.
How do I restore my wallet from the mnemonic seed or from the keys?
To restore your wallet with the 25 word mnemonic seed, please see this guide. To restore your wallet with your keys, please see this guide.
3. Wallet: Ledger
How do I generate a Ledger Monero Wallet with the GUI or CLI?
This question is beautifully answered on StackExchange. Check this page for the GUI instructions, and this page for the CLI instructions.
How can my local node become a public remote node?
So I've seen a lot of posts lately by people who still use Bitcoin (BTC), so I decided to make a beginner's guide to Monero (XMR). DISCLAIMER: I AM IN NO WAY AN EXPERT IN THIS FIELD AND DO NOT GUARANTEE 100% ANONYMITY WITH THIS GUIDE. THIS IS JUST MY BEST KNOWLEDGE CONCERNING THIS SUBJECT. What is XMR? XMR is just like BTC, it is a cryptocurrency. The difference between XMR and BTC is that XMR is a privacy-focused cryptocurrency. With BTC, everybody can see the sender, recipient and the amount send via Blockchain. XMR is different, with XMR, no outsiders can see the sender, recipient and the amount sent. This makes using XMR better for opsec. How can you obtain XMR? There are multiple ways to obtain XMR: 1. You can buy it via exchanges. 2. You can buy it via localmonero. 3. You can exchange other cryptocurrencies* to XMR. If you bought BTC (doesn't matter from where), you can exchange it for XMR. I find these 2 ways the easiest: - Use exchanging platforms to convert BTC to XMR. I personally use Morphtoken*** for this process, you simply fill in the amount, the recipient address (you XMR address) and the return/refund address (your BTC address, this is incase you fill in an invalid XMR address or something went wrong during the transaction). However, Morphtoken is restricted in certain countries which brings me to the next method. - You can exchange them via crypto-wallets that support both BTC and XMR. I've heard great things about Exodus Wallet***. It supports both BTC and XMR so you can convert BTC to XMR within the wallet-app. What wallets should I use? Personally, I recommend and use the GUI Wallet (desktop) and Cake Wallet (phone). They're both linked to same wallet Other wallets are fine, there is a list of trusted wallets on monero. XMR on TailsOS? Personally I don't think this is necessary as no outsiders can see your activity. However, if you like, you can set up the GUI Wallet on your Tails persistant storage. Sending XMR... These are some combinations of processes you could do to send XMR to your Market Wallet:
Exchanging BTC to XMR via Morphtoken (bought via BTC exchange): BTC Exchange Wallet -using Morphtoken-> GUI/Cake/Other Wallet -> Market Wallet.
Exchanging BTC to XMR via multi-support wallet (bought via BTC exchange): BTC Exchange Wallet -> Exodus/multi-support Wallet -> Market Wallet.
NOTE: NEVER SEND ANY CRYPTOCURRENCY STRAIGHT FROM YOUR EXCHANGE WALLET TO YOUR MARKET WALLET! Most exchanges don't sell XMR directly, which brings me to the next point (see point 3). *For this guide I'll be using BTC as bought crypto ***I am in no way affiliated with these organisations, they are just platforms I heard about or used. You are free to use other platforms. ALWAYS CHECK IF THE USED PLATFORM/WALLET IS LEGIT.
Flatten the Curve. #18. The current cold war between China and America explained. And how China was behind the 2008 Wall Street financial Crash. World War 3 is coming.
China, the USA, and the Afghanistan war are linked. And in order to get here, we will start there. 9-11 happened. Most of the planet mistakenly understood terrorists had struck a blow against Freedom and Capitalism and Democracy. It was time to invade Afghanistan. Yet all of the terrorists were linked to Saudi Arabia and not Afghanistan, that didn't make sense either. Yet they invaded to find Bin Laden, an ex CIA asset against the Soviet Union and it's subjugation of Afghanistan. The land in the middle of nowhere in relation to North America and the West. It was barren. A backwater without any strategic importance or natural resources. Or was there? The survey for rare earth elements was only made possible by the 2001 U.S. invasion, with work beginning in 2004. Mirzad says the Russians had already done significant surveying work during their military occupation of the country in the 1980s. Mirzad also toes the line for U.S. corporations, arguing, “The Afghan government should not touch the mining business. We have to give enough information to potential investors.” Rare Earth Elements. The elements that make the information age possible. People could understand the First Gulf War and the Geopolitical importance of oil. That was easy, but it still didn't sound morally just to have a war for oil. It was too imperialist and so they fell in line and supported a war for Kuwaiti freedom instead, despite the obvious and public manipulation at the UN by Nayirah. This is some of her testimony to the Human Rights Council. While I was there, I saw the Iraqi soldiers come into the hospital with guns. They took the babies out of the incubators, took the incubators and left the children to die on the cold floor. It was horrifying. I could not help but think of my nephew who was born premature and might have died that day as well. After I left the hospital, some of my friends and I distributed flyers condemning the Iraqi invasion until we were warned we might be killed if the Iraqis saw us. The Iraqis have destroyed everything in Kuwait. They stripped the supermarkets of food, the pharmacies of medicine, the factories of medical supplies, ransacked their houses and tortured neighbors and friends. There was only one problem. She was the daughter of Saud Al-Sabah, the Kuwaiti ambassador to the United States. Furthermore, it was revealed that her testimony was organized as part of the Citizens for a Free Kuwait public relations campaign, which was run by the American public relations firm Hill & Knowlton for the Kuwaiti government (fun fact, Hill & Knowlton also have extensive ties with Bill Gates). So the public was aghast at her testimony and supported the war against the mainly Soviet backed, but also American supported and Soviet backed Saddam Hussein, in his war against Iran, after the Iranians refused to Ally with American interests after the Islamic Revolution. But that was oil, this was Rare Earth Elements. There was a reason the war was called, Operation Enduring Freedom. This natural resource was far more important in the long run. You couldn't have a security surveillance apparatus without it. And what was supposed to be a war on terror was in actuality a territorial occupation for resources. Sleeping Dragon China is next, and where there's smoke, there's fire. Let's go point form for clarity. • China entered the rare earth market in the mid-1980s, at a time when the US was the major producer. But China soon caught up and became the production leader for rare earths. Its heavily state-supported strategy was aimed at dominating the global rare earth industry. • 1989 Beijing’s Tiananmen Square spring. The U.S. government suspends military sales to Beijing and freezes relations. • 1997. Clinton secures the release of Wei and Tiananmen Square protester Wang Dan. Beijing deports both dissidents to the United States. (If you don't understand these two were CIA assets working in China, you need to accept that not everything will be published. America wouldn't care about two political activists, but why would care about two intelligence operatives). • March 1996. Taiwan’s First Free Presidential Vote. • May 1999. America "accidently" bombs the Belgrade Chinese Embassy. • 2002 Price competitiveness was hard for the USA to achieve due to low to non-existent Chinese environmental standards; as a result, the US finally stopped its rare earth production. • October 2000. U.S. President Bill Clinton signs the U.S.-China Relations Act. China's take over of the market share in rare earth elements starts to increase. • October 2001. Afghanistan war Enduring Freedom started to secure rare earth elements (Haven't you ever wondered how they could mobilize and invade so quickly? The military was already prepared). • 2005. China establishes a monopoly on global production by keeping mineral prices low and then panics markets by introducing export quotas to raise prices by limiting supply. • Rare Earth Elements. Prices go into the stratosphere (for example, dysprosium prices do a bitcoin, rocketing from $118/kg to $2,262/kg between 2008 and 2011). • In a September 2005. Deputy Secretary of State Robert B. Zoellick initiates a strategic dialogue with China. This was presented as dialog to acknowledge China's emergence as a Superpower (which China probably insisted on), but it was about rare earth elements market price. • October 2006. China allows North Korea to conduct its first nuclear test, China serves as a mediator to bring Pyongyang back to the negotiating table with the USA. • September 2006. American housing prices start to fall. (At some point after this, secret negotiations must have become increasingly hostile). • March 2007. China Increases Military Spending. U.S. Vice President Dick Cheney says China’s military buildup is “not consistent” with the country’s stated goal of a “peaceful rise.” • Mid-2005 and mid-2006. China bought between $100b and $250 billion of US housing debt between mid-2005 and mid-2006. This debt was bought using the same financial instruments that caused the financial collapse. • 2006. Housing prices started to fall for the first time in decades. • Mid-2006 and mid-2007. China likely added another $390b to its reserves. "At the same time, if China stopped buying -- especially now, when the private market is clogged up -- US financial markets would really seize up." Council on Foreign Relations-2007 August • February 27, 2007. Stock markets in China and the U.S. fell by the most since 2003. Investors leave the money market and flock to Government backed Treasury Bills. I've never seen it like this before,'' said Jim Galluzzo, who began trading short-maturity Treasuries 20 years ago and now trades bills at RBS Greenwich Capital in Greenwich, Connecticut.Bills right now are trading like dot-coms.'' We had clients asking to be pulled out of money market funds and wanting to get into Treasuries,'' said Henley Smith, fixed-income manager in New York at Castleton Partners, which oversees about $150 million in bonds.People are buying T-bills because you know exactly what's in it.'' • February 13, 2008. The Economic Stimulus Act of 2008 was enacted, which included a tax rebate. The total cost of this bill was projected at $152 billion for 2008. A December 2009 study found that only about one-third of the tax rebate was spent, providing only a modest amount of stimulus. • September 2008. China Becomes Largest U.S. Foreign Creditor at 600 billion dollars. • 2010. China’s market power peaked in when it reached a market share of around 97% of all rare earth mineral production. Outside of China, there were almost no other producers left. Outside of China, the US is the second largest consumer of rare earths in the world behind Japan. About 60% of US rare earth imports are used as catalysts for petroleum refining, making it the country’s major consumer of rare earths. The US military also depends on rare earths. Many of the most advanced US weapon systems, including smart bombs, unmanned drones, cruise missiles, laser targeting, radar systems and the Joint Strike Fighter programme rely on rare earths. Against this background, the US Department of Defense (DoD) stated that “reliable access to the necessary material is a bedrock requirement for DOD” • 2010. A trade dispute arose when the Chinese government reduced its export quotas by 40% in 2010, sending the rare earths prices in the markets outside China soaring. The government argued that the quotas were necessary to protect the environment. • August 2010. China Becomes World’s Second-Largest Economy. • November 2011. U.S. Secretary of State Hillary Clinton outlines a U.S. “pivot” to Asia. Clinton’s call for “increased investment—diplomatic, economic, strategic, and otherwise—in the Asia-Pacific region” is seen as a move to counter China’s growing clout. • December 2011. U.S. President Barack Obama announces the United States and eight other nations have reached an agreement on the Trans-Pacific Partnership later announces plans to deploy 2,500 marines in Australia, prompting criticism from Beijing. • November 2012. China’s New Leadership. Xi Jinping replaces Hu Jintao as president, Communist Party general secretary, and chairman of the Central Military Commission. Xi delivers a series of speeches on the “rejuvenation” of China. • June 2013. U.S. President Barack Obama hosts Chinese President Xi Jinping for a “shirt-sleeves summit” • May 19, 2014. A U.S. court indicts five Chinese hackers, allegedly with ties to China’s People’s Liberation Army, on charges of stealing trade technology from U.S. companies. • November 12, 2014. Joint Climate Announcement. Barack Obama and Chinese President Xi Jinping issue a joint statement on climate change, pledging to reduce carbon emissions. (which very conveniently allows the quotas to fall and save pride for Xi). • 2015. China drops the export quotas because in 2014, the WTO ruled against China. • May 30, 2015 U.S. Warns China Over South China Sea. (China is trying to expand it's buffer zone to build a defense for the coming war). • January 2016. The government to abolish the one-child policy, now allowing all families to have two children. • February 9, 2017. Trump Affirms One China Policy After Raising Doubts. • April 6 – 7, 2017. Trump Hosts Xi at Mar-a-Lago. Beijing and Washington to expand trade of products and services like beef, poultry, and electronic payments, though the countries do not address more contentious trade issues including aluminum, car parts, and steel. • November 2017. President Xi meets with President Trump in another high profile summit. • March 22, 2018. Trump Tariffs Target China. The White House alleges Chinese theft of U.S. technology and intellectual property. Coming on the heels of tariffs on steel and aluminum imports, the measures target goods including clothing, shoes, and electronics and restrict some Chinese investment in the United States. • July 6, 2018 U.S.-China Trade War Escalates. • September 2018. Modifications led to the exclusion of rare earths from the final list of products and they consequently were not subject to import tariffs imposed by the US government in September 2018. • October 4, 2018. Pence Speech Signals Hard-Line Approach. He condemns what he calls growing Chinese military aggression, especially in the South China Sea, criticizes increased censorship and religious persecution by the Chinese government, and accuses China of stealing American intellectual property and interfering in U.S. elections. • December 1, 2018. Canada Arrests Huawei Executive. • March 6, 2019. Huawei Sues the United States. • March 27 2019. India and the US signed an agreement to "strengthen bilateral security and civil nuclear cooperation" including the construction of six American nuclear reactors in India • May 10, 2019. Trade War Intensifies. • August 5, 2019. U.S. Labels China a Currency Manipulator. • November 27, 2019. Trump Signs Bill Supporting Hong Kong Protesters. Chinese officials condemn the move, impose sanctions on several U.S.-based organizations, and suspend U.S. warship visits to Hong Kong. • January 15, 2020. ‘Phase One’ Trade Deal Signed. But the agreement maintains most tariffs and does not mention the Chinese government’s extensive subsidies. Days before the signing, the United States dropped its designation of China as a currency manipulator. • January 31, 2020. Tensions Soar Amid Coronavirus Pandemic. • March 18, 2020. China Expels American Journalists. The Chinese government announces it will expel at least thirteen journalists from three U.S. newspapers—the New York Times, Wall Street Journal, and Washington Post—whose press credentials are set to expire in 2020. Beijing also demands that those outlets, as well as TIME and Voice of America, share information with the government about their operations in China. The Chinese Foreign Ministry says the moves are in response to the U.S. government’s decision earlier in the year to limit the number of Chinese journalists from five state-run media outlets in the United States to 100, down from 160, and designate those outlets as foreign missions. And here we are. You may have noticed the Rare Earth Elements and the inclusion of Environmental Standards. Yes these are key to understanding the Geopolitical reality and importance of these events. There's a reason the one child policy stopped. Troop additions. I believe our current political reality started at Tiananmen square. The protests were an American sponsored attempt at regime change after the failure to convince them to leave totalitarian communism and join a greater political framework. Do I have proof? Yes. China, as far as I'm concerned, was responsible for the 2008 economic crisis. The Rare Earth Elements were an attempt to weaken the States and strengthen themselves simultaneously. This stranglehold either forced America to trade with China, or the trade was an American Trojan horse to eventually collapse their economy and cause a revolution after Tiananmen Square failed. Does my second proposal sound far fetched? Didn't the economy just shut down in response to the epidemic? Aren't both sides blaming the other? At this POINT, the epidemic seems to be overstated doesn’t it? Don't the casualties tend to the elder demographic and those already weakened by a primary disease? Exactly the kinds who wouldn't fight in a war. Does this change some of my views on the possibility of upcoming catastrophes and reasons for certain events? No. This is Chess, and there are obvious moves in chess, hidden moves in chess, but the best moves involve peices which can be utilized in different ways if the board calls for it. Is all what it seems? No. I definitely changed a few previously held beliefs prior to today, and I would caution you in advance that you will find some previously held convictions challenged. After uncovering what I did today, I would also strongly suggest reading information cautiously. This is all merely a culmination of ending the cold war, and once I have events laid out, you will see it as well. At this moment, the end analysis is a war will start in the near future. This will be mainly for a few reasons, preemptive resource control for water and crops, population reduction can be achieved since we have too many people, not enough jobs, and upcoming resource scarcity. Did you notice my omission of rare earth elements? This is because of Afghanistan. I would wager China or Russia is somehow supporting the continued resistance through Iran. But events are now accelerating with China because the western collation has already begun to build up their mines and start production. Do you remember when Trump made a "joke" about buying Greenland? Yeah. It turns out that Greenland has one of the largest rare earth mineral deposits on the planet. Take care. Be safe. Stay aware and be prepared. This message not brought to you by the Bill and Melinda Gates Foundation, Microsoft, Google, Facebook, Elon Musk, Blackrock, Vangaurd, the Rockefeller Foundation, Rand Corporation, DARPA, Rothschilds, Agenda 21, Agenda 30, and ID 2020.
Attention incoming interns! Here's a list of TIPS I WISH I KNEW starting my intern year, some things you can start working on now and some less commonly discussed but very important parts of your job
It’s that time of year and yet again I’ve seen plenty of incoming interns asking what they can do to prepare. I wrote this post to share some tips for all of the not-exactly-medical stuff I wish I knew before I started intern year and to share a few things that interns can do before they start to feel like they’re well prepared for the long white coat. As a quick background, I was a surgery intern in the first half of the 2010s and much of this is informed by my notes and memories from that time in addition to everything I’ve learned since, particularly about professionalism both in medicine and in the business world with work I’ve done in the healthcare startup arena. I’m also not perfect and very much a work in progress myself and, outside the intern-specific items here, I try to do most of these things myself—sometimes more successfully than others. So take what you think are good ideas here, leave what you don’t think would be useful, and if anyone else has anything to add, please feel free to chime in. TL;DR: Intern year is hard. Here are some not-so-commonly-disucussed tips that may help.
1. Being an effective intern is, at its core, about being responsible, effective and reliable.
Your day to day responsibilities are nearly always dominated by the need to get things done and to do so in a manner that lets your other team members focus on their own roles and responsibilities. What about learning clinical medicine? You'll learn plenty and fast. Don't worry. When reading through these tips below, view them from an angle of “would this help me develop an effective system for making sure everything gets done and nothing falls through the cracks?”
2. For your in-the-hospital life as well as your outside-the-hospital life, remember this one thing: you will forget.
You will be busy and have responsibilities in a way you likely have never experienced before. This will naturally make the day-to-day things in life more difficult than you’re used to so developing ways to outsmart your forgetful brain will pay off.
3. You are a professional now. This is your career. You’re in it.
It’s easy to view your life as a trainee as a sort of advanced student or something in between a student and a “real doctor”. But that’s not true. View yourself as a professional building your career. Your intern year is just the first step of that career. You’re a real doctor as much as any other now.
4. One of the hardest things about being an intern or resident is dealing with feelings of isolation. It will take work to actively manage and overcome those feelings.
Imposter syndrome, feeling like you don’t know what you’re doing or that you don’t belong, feeling like you’re not the person you used to be, that you don’t have time to do all the “normal” things that other people do, thinking your co-residents or attendings think you’re dumb, feeling that you don’t have time for friends/family/hobbies, ruminating on “what if I screw this up and hurt a patient?”, or “this doesn’t matter -- the patient is going to XX or YY anyway” etc are all common feelings and they all share the same undercurrent of feeling isolated in one way or another. You need to actively work to find ways to confront and overcome these feelings or else they will control you. When they control you, you’re burned out. It may not seem like it at first, but nearly every single tip below is geared towards avoiding feelings of isolation. Feeling like you’re not in control of your finances will make you feel isolated. Feeling like you’re losing a handle on your relationships will make you feel isolated. Feeling like you’re behind on your email and haven’t done all the little things in life you need to do will make you feel isolated. Read these tips through that lens.
What you can do before you start
1. Organize and update your contacts. Seriously.
Here are some ways it can help you maintain and grow your relationships.
Use the ‘Notes’ feature in your contacts for everyone important in your life and all the new people meet.
You will forget your friends’ kids names and ages. Every time you get a birth announcement or see a post on social media, go to your friend’s contact, edit the notes and put in the info. Then, when you reach out to your friends, ask about their kids...by name.
You will forget your friends’ boyfriend/girlfriend/wife/husband/partner’s name, especially if you’ve never met them or haven’t seen them for a long time. Put their name in your friends’ card with a note like “Started seeing Sam in June 2020, he/she’s a software engineer”. Someone you know gets married? Add their wedding date to their card.
You will forget how you knew people in your contacts. Met at a conference? Was a medical student on your heme onc service? Friend-of-a-friend you met at a wedding? Someone shares an interest you have? Make a note in their contact card. Tip: these notes are for you, not them. So if someone reminds you of an actor, or didn’t stop talking about bitcoin, make a note. It will help because you will forget.
Tag your contacts or add them to lists and use those tags/lists to your advantage.
Make lists or tags for your family, your medical school friends, your undergrad friends, your coresidents, your attendings, your medical students, the hospitals you’ll be working at, etc. Put those lists or tags to use like this:
You will forget to stay in touch with people important to you. Set reminders in your phone for every week / two weeks / month, etc to pull up a list (family, medical school friends, etc), pick someone on that list you haven’t chatted with in a while and text them and ask them how they’re doing. Aim to start a conversation, ask about what’s happening in their life. Texts are more personal and meaningful than liking a post on social media or sharing a meme. Initiating conversations with your friends and family will help you feel connected and will increase the likelihood they reach out to you.
Don’t label your medical students like “MS3 Laura” or “Sub-I Juan”, etc. Label them with their full name and treat them like the colleagues they are. Put them on a list, clear it out next year if you want, but don’t treat them as “MS3 XXX“ or “MS4 YYY”. I’m sure you remember feeling like a nameless/faceless medical student at times in school and I’m sure you didn’t love it. So don’t repeat that behavior. Add a note or two about them while you’re at it. Take enough interest in your medical students to treat them well. You never know when or how you’ll cross paths with them again.
If you rotate through different hospitals, you will forget which “ED” or “PACU” or “nursing station 3rd floor” numbers are which. Tag them or put them on a list. It’ll make finding them when you need them much easier.
2. Use a good note taking app and a good task manager app to help with both your in-hospital life and your outside-of-the-hospital life.
Here are some ways to use a notes app.
Make a note for each rotation you’re on. Add in any unstructured tips as they come up, like “Send all of Dr. X’s patients home with Y”, “Use the call room in the basement outside of the locker room, passcode 1234”, “Park in the X lot on the weekends”, “Dr. A likes to manage Z with Y”, “The case manager, NAME, usually sits at the computer behind the 2nd floor nurses station”, etc. Don't overthink them, just write them down when they come up. Review those notes the next time you rotate through because you will forget all those little things and they will help you in the future.
Create a master grocery list of all things you typically get at the grocery store. Share it with a roommate/partner so they can keep it updated too. That way if you ever stop to pick something up, you can review the list to make sure there’s nothing you’ll forget.
Make master lists for other things in your life too like “packing for a conference”, “packing for a family trip”, “Target/Wal-Mart household master list” so you can quickly review anytime something comes up so you minimize the chance of forgetting something
Make notes for all of the other stuff you have to manage in your life like your car, your apartment/house, your loans, etc and update them every time you work on that thing. Change your loan repayment? Add it to the note. Have to get your brakes fixed? Add to the note where you got it done, how much it cost, etc. Talk to your landlord about fixing the shower? Add it to the note. Have to call the medical board to sort something out with a license? Add it to the note.
I like two note apps on iOS: Bear for personal notes since it’s fast and has great tagging and Apple’s Notes app for shared notes
Pick a good task manager app and use it for all the things in your life that aren’t your day-to-day work
Cousin getting married and you can go to the wedding? Make tasks to ensure your time off, book your travel, buy a gift, rent a hotel room, etc. Then put all the relevant info into your note because...you will forget.
Pandemic is over and you get to present a poster at a conference? Make tasks to review your draft with your coauthors, print your poster, book your travel, submit your reimbursement, etc. Then put all the relevant info into a note. Otherwise, you’ll forget.
I like Things and have also liked OmniFocus. There is a ton of content on how to set one of these things up for productivity so review it and use it YouTube search
3. Take charge of your finances
When I was an intern, I figured all I had to do was pay my loans and not go into more debt. I wish I had done the following instead:
Read these two books: The White Coat Investor and I Will Teach You To Be Rich. Both are very good and have different strengths. The WCI is directly applicable to you and will help educate you in ways medical school didn’t about your financial future. IWTYTBR is much more of a “millennial” book but it’s very good for explaining big concepts and for providing a system to set yourself up for success. They’re both easy and relatively quick reads and don’t require any financial background. WCI is fine as an e-book but IWTY has a bunch of dialog boxes that make the e-book a poor experience, get a physical new or used copy.
Set up a budget. I use and swear by You Need A Budget. It’s the best money I spend every year. Their system is easy and straightforward and it doesn’t take long to get the hang of it. I can’t recommend it highly enough.
4. Update your CV now and keep it updated regularly
You will no doubt have to share your CV with someone at some point whether it’s for fellowship or a research project or any number of things. The time to work on it is not when someone says “can you share your CV?” -- that’s a recipe for omissions, typos and mistakes. The only thing you should be doing every time you share your CV is giving it a quick once-over to make sure you don’t spot any mistakes and to make sure it’s up to date There are plenty of templates online and your training institution may even have a preferred format somewhere on their website. Your ERAS application will give you a good head start but most of your medical school CV lines will either be condensed or removed all together unless something was particularly notable. You can almost always find example CVs online from senior people in your department or institution with a quick web search -- use a few as a guide Set a reminder / task to update your CV at regular intervals. Quarterly is good, yearly at least. Save new versions of it each time so you can refer to the old ones if you need to and name them in a way to let you know you’re always sharing the most recent version, e.g., LASTNAME_FIRST NAME_CV_2020-06. You will forget if the one marked “CV” only is the right one you want to share.
5. Subscribe to a couple of newsletters to stay up to date with the world outside of your hospital
For general news, your preferred newspaper probably has a daily email briefing. Otherwise, Axios AM/PM and Politico’s Playbook are both very good quick reads to stay up to date with current events.
Keep up with healthcare news so you know what’s going on in the healthcare system broadly
Politico’s Pulse and Morning eHealth are both very good and have quick facts at the beginning if you just want to skim
Rock Health’s Rock Weekly is a decent summary of each week in the healthcare startup and technology world
Pick a few of these and aim to get through them each day. If you can’t get through them, unsubscribe to the ones you think are least relevant to you so you never feel “behind” in staying up with the news. You can breeze through the few you pick in a few minutes here and there throughout the day -- don’t make it any harder than that to feel like you’re “up to date” on the news.
General tips for maintaining relationships
For any romantic relationship, do these things if you don’t already:
1. Make a rule: no phones at the table. * Don’t put your phone on the table face-up. Don’t put your phone on the table face-down. Keep your phone off the table and set to silent. * Focus on the person in front of you and show them you care about them by paying attention to them. We all know what it feels like to be with someone more interested in their screen than in interacting with you. If you’re on call, say “sorry, I’m on call, I may have to check something here and there”, apologize if you do check it and then put your phone away. 2. Make another rule: no phones in bed * Same principle as at the table. Want to feel like two strangers just passing through life who just so happen to share the same bed? Wake up, reach for your phone and scroll through your feeds like a zombie before getting out of bed. Same idea before bed. Your phone can wait. 3. If you’re at the point where you share finances, set a regular meeting to review how you’re doing. * Ideally, this is a “red, yellow or green” meeting and should only take a few minutes. Money can be a big conflict issue for relationships and avoiding talking about money is a surefire way to eventually turn to conflict. If you have a budget and shared goals, this should be quick. * A monthly check-in is good. Create a recurring calendar event, attach the shared notes or spreadsheet document you use, add your goals for the meeting and honor the meeting when it comes around.
Eat with people who are important to you, if you can.
There’s something about sharing a meal that’s special in human nature. Friends who are important to you? Partners? Mentors you’re looking to get to know better after you’ve had a few chats? Try to eat with them when you can. And keep your phone off the table.
The same idea works with your coresidents and teams in the hospital. Eat with them if you can. Eating with others builds, strengthens and maintains relationships. Keep your phone off the table if you can.
Think about it this way: who would you consider a better mentor, the person you’ve met with a few times in their office where they sit behind their desk and you in front of them while they glance at their computer screen every time it pings or the person who’s invited you to get coffee or food and they kept their phone away the whole time? Now turn that around and realize the power of the message you can send to people you care about by trying to eat with them and show them they have your full attention.
1. Learn to think about tasks as a continuum from start to finish instead of as a binary 'done/not done'.
Let’s say you have to order a CT for a patient of yours.
Instead of marking the task as complete the second you place the order for the CT, recognize that the whole task is not just placing the order, but also knowing when your patient is going down to the scanner, when they’re back, when the CT is up in the system, when the report is up and also that you’ve looked at the CT yourself and have read the report.
When your senior or attending asks you, “Did patient X get their CT?”, a not-so-great answer is “Yes” or “No”. A better answer is “they’re down at the scanner now” or “the scan’s done but it hasn’t been read yet. Want to look at it?” or “Yes, it’s negative for XXX but did show YYY”.
Whatever system you eventually adopt for your day-to-day task management in the hospital, whether it’s a list or index cards or a printed signout sheet, make sure you’re tracking both when orders go in, when they’re complete, when they’re cancelled, etc. Just marking things as complete once you place the order isn’t enough.
2. Signout is taken, not given.
What I mean by this is that when you take signout, that means you’re accepting responsibility for those patients. They might be your patients, you might be cross-covering, it doesn’t matter. What matters is that when those patients are your responsibility, it’s your responsibility to get what you need to know to take care of them. Is someone signing out to you in a hurry and not giving you what you need? Ask them for that relevant past medical history, those exam findings, and so on. It’s not enough for the person handing off to say “we’re worried about x or y”, you’ve got to follow that up with “in case of x or y, is there a plan for what the team wants me to do?”. Get the answers you need. A lot of covering patients on call is playing defense whereas the primary team generally plays offense. But that doesn’t mean you can play defense in isolation. The last thing you want is for the primary team to feel surprised by your choices.
* Here’s two ways for the above example to go when turning the patients you were covering back over the next day or whatever: 1. You: “For patient so-and-so, you said you were worried about x or y. Y happened.” Them: “What did you do?”. You: “Z”. Them: “Shit, my attending’s not gonna like that”. 2. You “Y happened so I did A like you said, it went fine and here’s the current status”. Them: “Great, thanks” * See the difference?
Along the lines of taking responsibility for those patients, that means that if you couldn’t get the information you needed at signout then you have to go and see those patients and get the information you need yourself.
You’ll hear this idea said a bunch of different ways like “trust but verify”, “trust no one” and your comfort level will change over the year as you become more confident and comfortable. But always error on the side of going to see the patient and getting your own information at the start.
3. If you will be miserable without something when you’re in the hospital, bring it with you. You won’t reliably be able to find it at the hospital every time you need it.
Need coffee otherwise you turn into a demon? Bring it with you. You never know when you’ll get caught doing something and won’t be able to run to the cafeteria for your fix.
On call overnight and know you need food so you don’t go insane? Bring it with you. Here’s a hospital food rule: never rely on the hospital's ability to feed you. The hospital will let you down sooner or later, I guarantee it.
Know you always get cold on call? The day you forget your jacket/sweatshirt is the day you won’t be able to find a spare blanket in the hospital to save your life. Put a backup in your locker (if your hospital respects you enough to give you one).
Miscellaneous productivity, professionalism and lifestyle tips
1. Aim to “touch” everything only once
Example: your physical mail. You know, the stuff made of dead trees that accumulates in that box you check every once in a while. For every piece of mail you get, you should either trash it, file it, or act on it. Don’t touch it until you’re ready to do one of those things.
Example: your email. Either delete it, archive it, reply to it or do the thing it’s telling you to do right away. Don’t fall into the trap of using your inbox as a to-do list -- that’s a recipe to get burned. Use a task manager for your to-do list and aim to keep your inbox at zero. Realize that email’s true power is communication and use it as a communication tool and nothing else.
I’ll use the example of going to a wedding again as something to “touch once”. Aim to accomplish all the tasks at once or at least create tasks and reminders to complete those tasks all in one go. Respond to the RSVP, create the calendar invite with all the information from the invitation, share the calendar event with your date, book your travel, book your hotel, book your rental car, buy your gift from the registry and set a reminder to get your suit/dress cleaned a few weeks ahead, etc.
2. Lean to use your calendar as a tool
Professionals in the “real world” tend to live and die by their calendars. Some people, especially many senior people in medicine, don’t manage their own calendars. But you manage yours. With it you can:
Make sure all events—even small ones like dates or errands you want to run—have locations so all you have to do is click the location for directions
Send invites to friends / family / coworkers for anything you talk about doing that has the relevant info
Make reminders for yourself to prepare for upcoming events, i.e.., don’t count on seeing your parents’/spouses’/whomever’s birthday “coming up” to remind you to get a gift or send a card. Create an event two weeks before their birthday that says “Buy Mom a birthday card”, set it to repeat yearly and buy a card when it comes up, send it a few days later and don’t worry that it won’t get there in time.
3. Learn to use email well
Ever get an email from someone and feel their tone was terse, condescending or rude? Don’t be that person. Error on the side being polite and professional and writing in complete sentences without textspeak. It’s not hard — you type fast, even with your thumbs, I’m sure of it.
Learn to communicate effectively. Keep it short but not terse. State why you’re writing to someone, be clear if you’re asking a question, and think about it this way: “How am I making it as easy as possible for this person to understand why I’m emailing them and do what I’m asking them to do?
Don’t use a canned salutation like “Best, NAME” or even worse: “Best, INITIALS”. Use your salutation to continue to communicate your message and remember that politeness and professionalism extend through your signature.
I don’t know why “Best,” is so common in medicine but it’s meaningless, unthoughtful, inherently passive aggressive and I seriously read it as if the person writing it were signing off by saying “Go f*ck yourself,”. Same thing for “Regards,” and its ilk, any abbreviation like “vr,” or any form of cutesy quote.
Write your salutation fresh each time. Did you ask someone for something? Say “Thank you for your help”. Are you writing someone senior to you and want to sound somewhat formal? “Sincerely,” never goes out of style. Are you sharing information and essentially writing a memo? Use “Please let me know if you have any questions”. Your salutation is communication, treat it that way.
Sign with your name, not your initials. Signing with initials is a common way senior people will try to remind you they’re senior to you. If you do it, it’s like you’re trying to prove you’re a Cool Guy Big Shot too. It never comes across well -- even for those senior people. Initials are terse. Lowercase initials are even terser. Although they may look different at first glance, all initial signatures functionally come across as ‘FU’. Write your name.
If it’s a few rounds back and forth of email, it’s normal drop salutations and signatures and treat email more like texting. Keep using complete sentences without textspeak, though. I promise you’ll come across better that way.
Use the ‘signature’ feature of your email client to share your professional details and contact information
Your institution (not department) will hopefully have a format for this that’s standardized and includes minimal or no graphics. If it doesn't, then I feel sorry for all the inevitable IT headaches you will eventually endure at your institution since they clearly underfund and undervalue contemporary IT and professional services. It’s the wild west out there so find some good examples of clean, professional signature formats and make one for yourself.
Note: this signature lives below your salutation and sign off. It’s essentially the letterhead for your email that lets your recipient fill in the details you may not otherwise provide like your department, mailing address or fax number. It’s not a replacement for signing off of your communication professionally.
Never use bold, italics, underlines or different font sizes in your emails. They only make emails harder to read and jumble your message.
If you want to highlight something, put it in a numbered or bulleted list.
If you can’t communicate what you want with 2-3 bulleted points, then email is not the right medium to use. Do you like reading long emails? Of course you don’t. Write a memo, attach it as a PDF or shared doc and use the email to tell your recipients to review the attachment.
You will eventually, in some way or another, ask someone to introduce you to one of their contacts and or refer you for something. Learn how to write a good forwardable email that utilizes the double opt-in concept and how to make it easy on the person doing you the favor. Read more here, here and here.
While you’re at it, understand the power of using CC and BCC to communicate effectively.
Aim to answer all emails written directly to you within 24 hours.
If you can’t respond fully right away, respond briefly saying you got the note and that you’ll work on it and get back to them. Set a reminder or create a task to do or review the thing and get back to them once you’ve done it.
Do you hate being left on read in text? You do it in email every time you don’t respond to someone in a timely fashion. It’s better to share a quick, “I got it and I’m working on it message” then not replying until days or weeks later.
4. Don’t let someone else’s negative energy and/or anxiety transfer to you
You will frequently experience things like this in the hospital:
A co-resident disagrees with a management decision made at rounds and mentions that so-and-so is an idiot. So-and-so probably isn’t an idiot. Your co-resident probably isn’t an idiot either. Form your own opinions from your own experiences.
A nurse pages you with a tone that says “THIS IS REALLY BAD”. It might be, go and see. And on your way, stay calm and go over the steps in your head of what you’d do if it is, in fact, REALLY BAD. But don’t freak yourself out before you even get to the room. You won’t be able to make decisions with a clear head if you’re already worked up.
You’re a surgery intern and all your patients are normally on the med-surg floor. Every once in a while, one goes somewhere like heme-onc if the med-surg floor is full. Someone on your team says something like “great, now they’re going to screw up our patient”. Recognize that that floor isn’t full of terrible nurses and may just have less experiences with lines and drains and that the best thing you can do is go down there, talk to the nurse and say “here’s what we want to be called about” and “this thing may look bad but it usually isn’t and we don’t need to be called, here’s why”, and so on. Doing things like this will mean you get fewer calls. Fewer calls are good.
Your attending is having a bad day and you’re not enjoying your interactions with them. Don’t let that make you have a bad day too. Medicine is hard enough as it is, stick to your own bad days instead adopting other people’s. Then pull up your friend list, text a buddy and feel better.
5. Don’t neglect your physical health. Trying to eat well and stay active are even more important when you’re insanely busy.
The #1 thing you can do to help your waistline is cook your own food and pack your own meals. It doesn’t matter what you cook or how good of a cook you are, as long as you’re aiming to pack meals that an adult would eat, it will be healthier than takeout and cafeteria food. It’s better for portion control, you control all the ingredients and you get a sense of satisfaction for being on the ball. It’s better in every way. I know it’s not realistic to always prep and pack your own food on the busiest of services but you should try to hit at least a percentage like 25% or 50% of your meals. There are no lost causes in your own health. It will be hard to exercise and work out. You should still try to do it anyway. You will go long stretches without exercising at times. Don’t beat yourself up about it. Every day is a chance to do the thing you want to do so get back out there.
6. If your social profiles are private, consider doing some housekeeping and making them public.
Instead of thinking about them as a liability to be that needs to be hidden, think about them as a narrative you can control. Nothing is private on the internet. Even your private profile. You never know who knows someone you know or what may get screenshotted and shared down the line. It’s natural to run a web search on anyone you’re meeting for a date, interviewing with for a job, or researching in general. When you search your own name, what comes up? What do you think when you’re searching for someone and they have a private page? Do you ever click on a few links to see professional stuff from LinkedIn, and then some social pages to see what else you learn? So does everyone else. Use your social pages to put forward a version of you that shows who you are, shows some interests true to yourself, makes you seem like a totally normal and reliable person (which is exactly what any potential date, partner, fellowship director or hiring manager is asking themselves about you) and doesn’t share enough information to let a patient show up at your door. Medicine lags behind other industries with people still commonly hiding behind private pages. In the tech world, it’s more strange to not have a public page. A private page says more about you that you might want to hide red flags whereas a public page says “go ahead and look, you won’t find any red flags”. One is much more powerful than the other.
Closing and something to read
When you view your professional life, it’s natural to view your professional relationships as being a binary one between patient and physician. That’s certainly essential and certainly important, but as a professional you now have relationships to consider with so many more types of people: co-residents, faculty in your department, faculty in other departments, administrators, support staff, medical students, and so on. Just as you had to learn how to work with patients, you will have to learn to work with all of the other people in your professional life. Truly effective professionals will treat all interactions importantly and give thought and consideration to each one. All these interactions and relationships will all affect your day-to-day experience, your well-being and, ultimately, your professional experience. You will find yourself being not just responsible for your patients, but also for yourself, your career and your relationships. It takes effort to succeed in all of those areas. And even with effort, sometimes you’ll be winning in an area and losing in others. And in a few months it will be different -- that’s just life. I want you to consider looking outside of books and resources written specifically for physicians when you’re trying to tackle these issues inside the hospital and out. Medicine is a much-smaller-than-you-realize bubble with a long history of personality-driven examples of “that’s just the way we do it” or “that’s how we’ve always done it”. There are good books about medicine out there, to be sure, but you’ll benefit more professionally by learning from the wide world outside of hospitals since there are quite simply many more successful and accomplished people who’ve written great resources for all aspects of professional life that medicine tends to ignore. I’d recommend you start with this book: Andy Grove’s High Output Management (a review by another Valley titan here). Andy escaped communist Hungary, taught himself English and rose to be CEO of Intel and went on to be a sage of Silicon Valley before he passed. This book is a how-to guide for how to be an effective professional in an organization (hint: you're now a professional in an organization) and if you’ve enjoyed this post at all, you’ll love this book. You may think that this book applies to ‘managers’ and ‘business’ and not medicine but you couldn’t be more wrong. Although it was probably written around the time you were born, nearly everything in this book is a lesson that directly applies to your professional life in medicine and when you start seeing it, you’ll feel like you’re in The Matrix. Congratulations! You've worked hard to get here. Be proud of yourself, your degree, your long white coat and be the best doctor you can be.
Hey all, I've been researching coins since 2017 and have gone through 100s of them in the last 3 years. I got introduced to blockchain via Bitcoin of course, analyzed Ethereum thereafter and from that moment I have a keen interest in smart contact platforms. I’m passionate about Ethereum but I find Zilliqa to have a better risk-reward ratio. Especially because Zilliqa has found an elegant balance between being secure, decentralized and scalable in my opinion.
Below I post my analysis of why from all the coins I went through I’m most bullish on Zilliqa (yes I went through Tezos, EOS, NEO, VeChain, Harmony, Algorand, Cardano etc.). Note that this is not investment advice and although it's a thorough analysis there is obviously some bias involved. Looking forward to what you all think!
Fun fact: the name Zilliqa is a play on ‘silica’ silicon dioxide which means “Silicon for the high-throughput consensus computer.”
This post is divided into (i) Technology, (ii) Business & Partnerships, and (iii) Marketing & Community. I’ve tried to make the technology part readable for a broad audience. If you’ve ever tried understanding the inner workings of Bitcoin and Ethereum you should be able to grasp most parts. Otherwise, just skim through and once you are zoning out head to the next part.
Technology and some more:
The technology is one of the main reasons why I’m so bullish on Zilliqa. First thing you see on their website is: “Zilliqa is a high-performance, high-security blockchain platform for enterprises and next-generation applications.” These are some bold statements.
Before we deep dive into the technology let’s take a step back in time first as they have quite the history. The initial research paper from which Zilliqa originated dates back to August 2016: Elastico: A Secure Sharding Protocol For Open Blockchains where Loi Luu (Kyber Network) is one of the co-authors. Other ideas that led to the development of what Zilliqa has become today are: Bitcoin-NG, collective signing CoSi, ByzCoin and Omniledger.
The technical white paper was made public in August 2017 and since then they have achieved everything stated in the white paper and also created their own open source intermediate level smart contract language called Scilla (functional programming language similar to OCaml) too.
Mainnet is live since the end of January 2019 with daily transaction rates growing continuously. About a week ago mainnet reached 5 million transactions, 500.000+ addresses in total along with 2400 nodes keeping the network decentralized and secure. Circulating supply is nearing 11 billion and currently only mining rewards are left. The maximum supply is 21 billion with annual inflation being 7.13% currently and will only decrease with time.
Zilliqa realized early on that the usage of public cryptocurrencies and smart contracts were increasing but decentralized, secure, and scalable alternatives were lacking in the crypto space. They proposed to apply sharding onto a public smart contract blockchain where the transaction rate increases almost linear with the increase in the amount of nodes. More nodes = higher transaction throughput and increased decentralization. Sharding comes in many forms and Zilliqa uses network-, transaction- and computational sharding. Network sharding opens up the possibility of using transaction- and computational sharding on top. Zilliqa does not use state sharding for now. We’ll come back to this later.
Before we continue dissecting how Zilliqa achieves such from a technological standpoint it’s good to keep in mind that a blockchain being decentralised and secure and scalable is still one of the main hurdles in allowing widespread usage of decentralised networks. In my opinion this needs to be solved first before blockchains can get to the point where they can create and add large scale value. So I invite you to read the next section to grasp the underlying fundamentals. Because after all these premises need to be true otherwise there isn’t a fundamental case to be bullish on Zilliqa, right?
Down the rabbit hole
How have they achieved this? Let’s define the basics first: key players on Zilliqa are the users and the miners. A user is anybody who uses the blockchain to transfer funds or run smart contracts. Miners are the (shard) nodes in the network who run the consensus protocol and get rewarded for their service in Zillings (ZIL). The mining network is divided into several smaller networks called shards, which is also referred to as ‘network sharding’. Miners subsequently are randomly assigned to a shard by another set of miners called DS (Directory Service) nodes. The regular shards process transactions and the outputs of these shards are eventually combined by the DS shard as they reach consensus on the final state. More on how these DS shards reach consensus (via pBFT) will be explained later on.
The Zilliqa network produces two types of blocks: DS blocks and Tx blocks. One DS Block consists of 100 Tx Blocks. And as previously mentioned there are two types of nodes concerned with reaching consensus: shard nodes and DS nodes. Becoming a shard node or DS node is being defined by the result of a PoW cycle (Ethash) at the beginning of the DS Block. All candidate mining nodes compete with each other and run the PoW (Proof-of-Work) cycle for 60 seconds and the submissions achieving the highest difficulty will be allowed on the network. And to put it in perspective: the average difficulty for one DS node is ~ 2 Th/s equaling 2.000.000 Mh/s or 55 thousand+ GeForce GTX 1070 / 8 GB GPUs at 35.4 Mh/s. Each DS Block 10 new DS nodes are allowed. And a shard node needs to provide around 8.53 GH/s currently (around 240 GTX 1070s). Dual mining ETH/ETC and ZIL is possible and can be done via mining software such as Phoenix and Claymore. There are pools and if you have large amounts of hashing power (Ethash) available you could mine solo.
The PoW cycle of 60 seconds is a peak performance and acts as an entry ticket to the network. The entry ticket is called a sybil resistance mechanism and makes it incredibly hard for adversaries to spawn lots of identities and manipulate the network with these identities. And after every 100 Tx Blocks which corresponds to roughly 1,5 hour this PoW process repeats. In between these 1,5 hour, no PoW needs to be done meaning Zilliqa’s energy consumption to keep the network secure is low. For more detailed information on how mining works click here. Okay, hats off to you. You have made it this far. Before we go any deeper down the rabbit hole we first must understand why Zilliqa goes through all of the above technicalities and understand a bit more what a blockchain on a more fundamental level is. Because the core of Zilliqa’s consensus protocol relies on the usage of pBFT (practical Byzantine Fault Tolerance) we need to know more about state machines and their function. Navigate to Viewblock, a Zilliqa block explorer, and just come back to this article. We will use this site to navigate through a few concepts.
We have established that Zilliqa is a public and distributed blockchain. Meaning that everyone with an internet connection can send ZILs, trigger smart contracts, etc. and there is no central authority who fully controls the network. Zilliqa and other public and distributed blockchains (like Bitcoin and Ethereum) can also be defined as state machines.
Taking the liberty of paraphrasing examples and definitions given by Samuel Brooks’ medium article, he describes the definition of a blockchain (like Zilliqa) as: “A peer-to-peer, append-only datastore that uses consensus to synchronize cryptographically-secure data”.
Next, he states that: "blockchains are fundamentally systems for managing valid state transitions”. For some more context, I recommend reading the whole medium article to get a better grasp of the definitions and understanding of state machines. Nevertheless, let’s try to simplify and compile it into a single paragraph. Take traffic lights as an example: all its states (red, amber, and green) are predefined, all possible outcomes are known and it doesn’t matter if you encounter the traffic light today or tomorrow. It will still behave the same. Managing the states of a traffic light can be done by triggering a sensor on the road or pushing a button resulting in one traffic lights’ state going from green to red (via amber) and another light from red to green.
With public blockchains like Zilliqa, this isn’t so straightforward and simple. It started with block #1 almost 1,5 years ago and every 45 seconds or so a new block linked to the previous block is being added. Resulting in a chain of blocks with transactions in it that everyone can verify from block #1 to the current #647.000+ block. The state is ever changing and the states it can find itself in are infinite. And while the traffic light might work together in tandem with various other traffic lights, it’s rather insignificant comparing it to a public blockchain. Because Zilliqa consists of 2400 nodes who need to work together to achieve consensus on what the latest valid state is while some of these nodes may have latency or broadcast issues, drop offline or are deliberately trying to attack the network, etc.
Now go back to the Viewblock page take a look at the amount of transaction, addresses, block and DS height and then hit refresh. Obviously as expected you see new incremented values on one or all parameters. And how did the Zilliqa blockchain manage to transition from a previous valid state to the latest valid state? By using pBFT to reach consensus on the latest valid state.
After having obtained the entry ticket, miners execute pBFT to reach consensus on the ever-changing state of the blockchain. pBFT requires a series of network communication between nodes, and as such there is no GPU involved (but CPU). Resulting in the total energy consumed to keep the blockchain secure, decentralized and scalable being low.
pBFT stands for practical Byzantine Fault Tolerance and is an optimization on the Byzantine Fault Tolerant algorithm. To quote Blockonomi: “In the context of distributed systems, Byzantine Fault Tolerance is the ability of a distributed computer network to function as desired and correctly reach a sufficient consensus despite malicious components (nodes) of the system failing or propagating incorrect information to other peers.” Zilliqa is such a distributed computer network and depends on the honesty of the nodes (shard and DS) to reach consensus and to continuously update the state with the latest block. If pBFT is a new term for you I can highly recommend the Blockonomi article.
The idea of pBFT was introduced in 1999 - one of the authors even won a Turing award for it - and it is well researched and applied in various blockchains and distributed systems nowadays. If you want more advanced information than the Blockonomi link provides click here. And if you’re in between Blockonomi and the University of Singapore read the Zilliqa Design Story Part 2 dating from October 2017. Quoting from the Zilliqa tech whitepaper: “pBFT relies upon a correct leader (which is randomly selected) to begin each phase and proceed when the sufficient majority exists. In case the leader is byzantine it can stall the entire consensus protocol. To address this challenge, pBFT offers a view change protocol to replace the byzantine leader with another one.”
pBFT can tolerate ⅓ of the nodes being dishonest (offline counts as Byzantine = dishonest) and the consensus protocol will function without stalling or hiccups. Once there are more than ⅓ of dishonest nodes but no more than ⅔ the network will be stalled and a view change will be triggered to elect a new DS leader. Only when more than ⅔ of the nodes are dishonest (66%) double-spend attacks become possible.
If the network stalls no transactions can be processed and one has to wait until a new honest leader has been elected. When the mainnet was just launched and in its early phases, view changes happened regularly. As of today the last stalling of the network - and view change being triggered - was at the end of October 2019.
Another benefit of using pBFT for consensus besides low energy is the immediate finality it provides. Once your transaction is included in a block and the block is added to the chain it’s done. Lastly, take a look at this article where three types of finality are being defined: probabilistic, absolute and economic finality. Zilliqa falls under the absolute finality (just like Tendermint for example). Although lengthy already we skipped through some of the inner workings from Zilliqa’s consensus: read the Zilliqa Design Story Part 3 and you will be close to having a complete picture on it. Enough about PoW, sybil resistance mechanism, pBFT, etc. Another thing we haven’t looked at yet is the amount of decentralization.
Currently, there are four shards, each one of them consisting of 600 nodes. 1 shard with 600 so-called DS nodes (Directory Service - they need to achieve a higher difficulty than shard nodes) and 1800 shard nodes of which 250 are shard guards (centralized nodes controlled by the team). The amount of shard guards has been steadily declining from 1200 in January 2019 to 250 as of May 2020. On the Viewblock statistics, you can see that many of the nodes are being located in the US but those are only the (CPU parts of the) shard nodes who perform pBFT. There is no data from where the PoW sources are coming. And when the Zilliqa blockchain starts reaching its transaction capacity limit, a network upgrade needs to be executed to lift the current cap of maximum 2400 nodes to allow more nodes and formation of more shards which will allow to network to keep on scaling according to demand. Besides shard nodes there are also seed nodes. The main role of seed nodes is to serve as direct access points (for end-users and clients) to the core Zilliqa network that validates transactions. Seed nodes consolidate transaction requests and forward these to the lookup nodes (another type of nodes) for distribution to the shards in the network. Seed nodes also maintain the entire transaction history and the global state of the blockchain which is needed to provide services such as block explorers. Seed nodes in the Zilliqa network are comparable to Infura on Ethereum.
The seed nodes were first only operated by Zilliqa themselves, exchanges and Viewblock. Operators of seed nodes like exchanges had no incentive to open them for the greater public. They were centralised at first. Decentralisation at the seed nodes level has been steadily rolled out since March 2020 ( Zilliqa Improvement Proposal 3 ). Currently the amount of seed nodes is being increased, they are public-facing and at the same time PoS is applied to incentivize seed node operators and make it possible for ZIL holders to stake and earn passive yields. Important distinction: seed nodes are not involved with consensus! That is still PoW as entry ticket and pBFT for the actual consensus.
5% of the block rewards are being assigned to seed nodes (from the beginning in 2019) and those are being used to pay out ZIL stakers. The 5% block rewards with an annual yield of 10.03% translate to roughly 610 MM ZILs in total that can be staked. Exchanges use the custodial variant of staking and wallets like Moonlet will use the non-custodial version (starting in Q3 2020). Staking is being done by sending ZILs to a smart contract created by Zilliqa and audited by Quantstamp.
With a high amount of DS; shard nodes and seed nodes becoming more decentralized too, Zilliqa qualifies for the label of decentralized in my opinion.
Generalized: programming languages can be divided into being ‘object-oriented’ or ‘functional’. Here is an ELI5 given by software development academy: * “all programs have two basic components, data – what the program knows – and behavior – what the program can do with that data. So object-oriented programming states that combining data and related behaviors in one place, is called “object”, which makes it easier to understand how a particular program works. On the other hand, functional programming argues that data and behavior are different things and should be separated to ensure their clarity.” *
Scilla is on the functional side and shares similarities with OCaml: OCaml is a general-purpose programming language with an emphasis on expressiveness and safety. It has an advanced type system that helps catch your mistakes without getting in your way. It's used in environments where a single mistake can cost millions and speed matters, is supported by an active community, and has a rich set of libraries and development tools. For all its power, OCaml is also pretty simple, which is one reason it's often used as a teaching language.
Scilla is blockchain agnostic, can be implemented onto other blockchains as well, is recognized by academics and won a so-called Distinguished Artifact Award award at the end of last year.
One of the reasons why the Zilliqa team decided to create their own programming language focused on preventing smart contract vulnerabilities is that adding logic on a blockchain, programming, means that you cannot afford to make mistakes. Otherwise, it could cost you. It’s all great and fun blockchains being immutable but updating your code because you found a bug isn’t the same as with a regular web application for example. And with smart contracts, it inherently involves cryptocurrencies in some form thus value.
Another difference with programming languages on a blockchain is gas. Every transaction you do on a smart contract platform like Zilliqa or Ethereum costs gas. With gas you basically pay for computational costs. Sending a ZIL from address A to address B costs 0.001 ZIL currently. Smart contracts are more complex, often involve various functions and require more gas (if gas is a new concept click here ).
So with Scilla, similar to Solidity, you need to make sure that “every function in your smart contract will run as expected without hitting gas limits. An improper resource analysis may lead to situations where funds may get stuck simply because a part of the smart contract code cannot be executed due to gas limits. Such constraints are not present in traditional software systems”.Scilla design story part 1
Some examples of smart contract issues you’d want to avoid are: leaking funds, ‘unexpected changes to critical state variables’ (example: someone other than you setting his or her address as the owner of the smart contract after creation) or simply killing a contract.
Scilla also allows for formal verification. Wikipedia to the rescue: In the context of hardware and software systems, formal verification is the act of proving or disproving the correctness of intended algorithms underlying a system with respect to a certain formal specification or property, using formal methods of mathematics.
Formal verification can be helpful in proving the correctness of systems such as: cryptographic protocols, combinational circuits, digital circuits with internal memory, and software expressed as source code.
“Scilla is being developed hand-in-hand with formalization of its semantics and its embedding into the Coq proof assistant — a state-of-the art tool for mechanized proofs about properties of programs.”
Simply put, with Scilla and accompanying tooling developers can be mathematically sure and proof that the smart contract they’ve written does what he or she intends it to do.
Smart contract on a sharded environment and state sharding
There is one more topic I’d like to touch on: smart contract execution in a sharded environment (and what is the effect of state sharding). This is a complex topic. I’m not able to explain it any easier than what is posted here. But I will try to compress the post into something easy to digest.
Earlier on we have established that Zilliqa can process transactions in parallel due to network sharding. This is where the linear scalability comes from. We can define simple transactions: a transaction from address A to B (Category 1), a transaction where a user interacts with one smart contract (Category 2) and the most complex ones where triggering a transaction results in multiple smart contracts being involved (Category 3). The shards are able to process transactions on their own without interference of the other shards. With Category 1 transactions that is doable, with Category 2 transactions sometimes if that address is in the same shard as the smart contract but with Category 3 you definitely need communication between the shards. Solving that requires to make a set of communication rules the protocol needs to follow in order to process all transactions in a generalised fashion.
There is no strict defined roadmap but here are topics being worked on. And via the Zilliqa website there is also more information on the projects they are working on.
Business & Partnerships
It’s not only technology in which Zilliqa seems to be excelling as their ecosystem has been expanding and starting to grow rapidly. The project is on a mission to provide OpenFinance (OpFi) to the world and Singapore is the right place to be due to its progressive regulations and futuristic thinking. Singapore has taken a proactive approach towards cryptocurrencies by introducing the Payment Services Act 2019 (PS Act). Among other things, the PS Act will regulate intermediaries dealing with certain cryptocurrencies, with a particular focus on consumer protection and anti-money laundering. It will also provide a stable regulatory licensing and operating framework for cryptocurrency entities, effectively covering all crypto businesses and exchanges based in Singapore. According to PWC 82% of the surveyed executives in Singapore reported blockchain initiatives underway and 13% of them have already brought the initiatives live to the market. There is also an increasing list of organizations that are starting to provide digital payment services. Moreover, Singaporean blockchain developers Building Cities Beyond has recently created an innovation $15 million grant to encourage development on its ecosystem. This all suggests that Singapore tries to position itself as (one of) the leading blockchain hubs in the world.
Zilliqa seems to already take advantage of this and recently helped launch Hg Exchange on their platform, together with financial institutions PhillipCapital, PrimePartners and Fundnel. Hg Exchange, which is now approved by the Monetary Authority of Singapore (MAS), uses smart contracts to represent digital assets. Through Hg Exchange financial institutions worldwide can use Zilliqa's safe-by-design smart contracts to enable the trading of private equities. For example, think of companies such as Grab, Airbnb, SpaceX that are not available for public trading right now. Hg Exchange will allow investors to buy shares of private companies & unicorns and capture their value before an IPO. Anquan, the main company behind Zilliqa, has also recently announced that they became a partner and shareholder in TEN31 Bank, which is a fully regulated bank allowing for tokenization of assets and is aiming to bridge the gap between conventional banking and the blockchain world. If STOs, the tokenization of assets, and equity trading will continue to increase, then Zilliqa’s public blockchain would be the ideal candidate due to its strategic positioning, partnerships, regulatory compliance and the technology that is being built on top of it.
What is also very encouraging is their focus on banking the un(der)banked. They are launching a stablecoin basket starting with XSGD. As many of you know, stablecoins are currently mostly used for trading. However, Zilliqa is actively trying to broaden the use case of stablecoins. I recommend everybody to read this text that Amrit Kumar wrote (one of the co-founders). These stablecoins will be integrated in the traditional markets and bridge the gap between the crypto world and the traditional world. This could potentially revolutionize and legitimise the crypto space if retailers and companies will for example start to use stablecoins for payments or remittances, instead of it solely being used for trading.
Zilliqa also released their DeFi strategic roadmap (dating November 2019) which seems to be aligning well with their OpFi strategy. A non-custodial DEX is coming to Zilliqa made by Switcheo which allows cross-chain trading (atomic swaps) between ETH, EOS and ZIL based tokens. They also signed a Memorandum of Understanding for a (soon to be announced) USD stablecoin. And as Zilliqa is all about regulations and being compliant, I’m speculating on it to be a regulated USD stablecoin. Furthermore, XSGD is already created and visible on block explorer and XIDR (Indonesian Stablecoin) is also coming soon via StraitsX. Here also an overview of the Tech Stack for Financial Applications from September 2019. Further quoting Amrit Kumar on this:
There are two basic building blocks in DeFi/OpFi though: 1) stablecoins as you need a non-volatile currency to get access to this market and 2) a dex to be able to trade all these financial assets. The rest are built on top of these blocks.
So far, together with our partners and community, we have worked on developing these building blocks with XSGD as a stablecoin. We are working on bringing a USD-backed stablecoin as well. We will soon have a decentralised exchange developed by Switcheo. And with HGX going live, we are also venturing into the tokenization space. More to come in the future.”
Additionally, they also have this ZILHive initiative that injects capital into projects. There have been already 6 waves of various teams working on infrastructure, innovation and research, and they are not from ASEAN or Singapore only but global: see Grantees breakdown by country. Over 60 project teams from over 20 countries have contributed to Zilliqa's ecosystem. This includes individuals and teams developing wallets, explorers, developer toolkits, smart contract testing frameworks, dapps, etc. As some of you may know, Unstoppable Domains (UD) blew up when they launched on Zilliqa. UD aims to replace cryptocurrency addresses with a human-readable name and allows for uncensorable websites. Zilliqa will probably be the only one able to handle all these transactions onchain due to ability to scale and its resulting low fees which is why the UD team launched this on Zilliqa in the first place. Furthermore, Zilliqa also has a strong emphasis on security, compliance, and privacy, which is why they partnered with companies like Elliptic, ChainSecurity (part of PwC Switzerland), and Incognito. Their sister company Aqilliz (Zilliqa spelled backwards) focuses on revolutionizing the digital advertising space and is doing interesting things like using Zilliqa to track outdoor digital ads with companies like Foodpanda.
Zilliqa is listed on nearly all major exchanges, having several different fiat-gateways and recently have been added to Binance’s margin trading and futures trading with really good volume. They also have a very impressive team with good credentials and experience. They don't just have “tech people”. They have a mix of tech people, business people, marketeers, scientists, and more. Naturally, it's good to have a mix of people with different skill sets if you work in the crypto space.
Marketing & Community
Zilliqa has a very strong community. If you just follow their Twitter their engagement is much higher for a coin that has approximately 80k followers. They also have been ‘coin of the day’ by LunarCrush many times. LunarCrush tracks real-time cryptocurrency value and social data. According to their data, it seems Zilliqa has a more fundamental and deeper understanding of marketing and community engagement than almost all other coins. While almost all coins have been a bit frozen in the last months, Zilliqa seems to be on its own bull run. It was somewhere in the 100s a few months ago and is currently ranked #46 on CoinGecko. Their official Telegram also has over 20k people and is very active, and their community channel which is over 7k now is more active and larger than many other official channels. Their local communities also seem to be growing.
Moreover, their community started ‘Zillacracy’ together with the Zilliqa core team ( see www.zillacracy.com ). It’s a community-run initiative where people from all over the world are now helping with marketing and development on Zilliqa. Since its launch in February 2020 they have been doing a lot and will also run their own non-custodial seed node for staking. This seed node will also allow them to start generating revenue for them to become a self sustaining entity that could potentially scale up to become a decentralized company working in parallel with the Zilliqa core team. Comparing it to all the other smart contract platforms (e.g. Cardano, EOS, Tezos etc.) they don't seem to have started a similar initiative (correct me if I’m wrong though). This suggests in my opinion that these other smart contract platforms do not fully understand how to utilize the ‘power of the community’. This is something you cannot ‘buy with money’ and gives many projects in the space a disadvantage.
Zilliqa also released two social products called SocialPay and Zeeves. SocialPay allows users to earn ZILs while tweeting with a specific hashtag. They have recently used it in partnership with the Singapore Red Cross for a marketing campaign after their initial pilot program. It seems like a very valuable social product with a good use case. I can see a lot of traditional companies entering the space through this product, which they seem to suggest will happen. Tokenizing hashtags with smart contracts to get network effect is a very smart and innovative idea.
Regarding Zeeves, this is a tipping bot for Telegram. They already have 1000s of signups and they plan to keep upgrading it for more and more people to use it (e.g. they recently have added a quiz features). They also use it during AMAs to reward people in real-time. It’s a very smart approach to grow their communities and get familiar with ZIL. I can see this becoming very big on Telegram. This tool suggests, again, that the Zilliqa team has a deeper understanding of what the crypto space and community needs and is good at finding the right innovative tools to grow and scale.
To be honest, I haven’t covered everything (i’m also reaching the character limited haha). So many updates happening lately that it's hard to keep up, such as the International Monetary Fund mentioning Zilliqa in their report, custodial and non-custodial Staking, Binance Margin, Futures, Widget, entering the Indian market, and more. The Head of Marketing Colin Miles has also released this as an overview of what is coming next. And last but not least, Vitalik Buterin has been mentioning Zilliqa lately acknowledging Zilliqa and mentioning that both projects have a lot of room to grow. There is much more info of course and a good part of it has been served to you on a silver platter. I invite you to continue researching by yourself :-) And if you have any comments or questions please post here!
Updated list of Global Beermoney opportunities (+180!) - June 2020
Updated list of Global Beermoney opportunities (+180!) - June 2020
The current, and now previous, Beermoney Global list started nearly 5 years ago. It’s been updated and has grown over all that time, but it also became a hassle to keep current. It was time to build a new list from scratch based on my experience in the Beermoney world over all these years and all the contributions all of you have been making in this sub. The lists consist of opportunities that are available in at least one country that is not the US. This means there are sites which only work in Canada or the UK. There’s sites which are open to the whole world, but this does not mean everyone can really earn something on it. It’s all still very demographic and therefore location dependent. This list should give you a starting point to try out and find what works for you. I’m not using everything myself as I prefer to focus on a few, so not all are tested by me. They are found in this sub, other subreddits and other resources where people claim to have success. I’ve chosen the format of a simple table with the bare minimum of information to keep things clean. It includes a link, how you earn, personal payment proof if available and sign-up bonus codes if applicable. Some of these bonuses are also one-time use codes specifically made for this sub! For the ones I don’t have payment proof (yet) feel free to provide some as a comment or via modmail so others know it’s legit. I am working on detailed instructions for each method that I personally use which will include things like cashout minimum, cashout options, tips & tricks,... For now I’ve split things up based on the type of earning like passive or mobile. Because of this there’s sometimes an overlap as some are both passive and on mobile or both earning crypto and a GPT (Get Paid To) website. The lists are obviously not complete so I invite you to keep posting new ones in the sub, as a comment to this post, or in modmail. Especially if you have sites or apps which work for one single specific country I can start building a list, just like I did for The Netherlands and Belgium. If you recognize things which are in fact scams or not worth it let me know as well.
Get Paid To (Surveys, tasks, offers, videos, clicking links, play games, searching)
For The Netherlands there are a few very good options next to a bunch of ‘spaarprogramma’s. There ‘spaarprogramma’s are all the same where you receive and click a bunch of e-mails, advertisements, banners,... I advise you to create a separate e-mail address or use a good filter in your inbox as you will be spammed to death. I believe they can be a nice piece of beermoney but they take quite the effort.
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Coinbase – How to find your Bitcoin Wallet address 2020!
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