Haseeb Qureshi

"So the ransomed bitcoins would have been commingled with a bunch of clean bitcoins." Actually thanks to Bitcoin's UTXO model, it's not that bad to do. Ethereum uses an account model which would make the notion of "tainting an entire wallet" much more messy.pic.twitter.com/rIeMWKymfX

Always useful to get some context. A Slashdotter when #Bitcoin crashed from $17 to $4 in 2011. Here's to another decade of noise pic.twitter.com/JJK7mH1zef

Cryptoanarchist / sound money types often make bad strawman critiques of fiat. Fiat money is powerful and often very robust. If you want to compete with it, you first have to understand it. Great presentation by @interfluidity on the evolution of fiat: https://drive.google.com/file/d/12CYhupkvf0-UMCH4oIyZxYj8Qrl92gDi/view …pic.twitter.com/9Vip075KMa

So turns out retail crypto trading in Korea has fallen off a cliff. https://www.longhash.com/en/news/3222/South-Korean-Crypto-Trading-Is-Stagnant,-But-Blockchain-Investors-Spot-Opportunities … Exchange volumes are way down. We've come a long way since the kimchi premium. Choice quote:pic.twitter.com/VtY6ZT9q9m

Catching up on my #AdventOfCode in #Ruby this weekend, fun to unrust my coding chops. Also getting up to speed on some slick new Ruby 2.6 methods. Two more days to go!pic.twitter.com/R2sX9bYPL4

Is this worth worrying about? You can actually model this using agent-based simulations, which @tarunchitra of @gauntletnetwork does in his paper. By simulating economically rational stakers over thousands of possible parameters, he arrives at several key insights. 4/7pic.twitter.com/TVTZfcMqFH

Nowadays Bitcoin uses a hard-coded list of DNS servers (run by core team) that spit out a list of Bitcoin peers. Every Bitcoin Core node consults this list on first boot to choose its initial peers. It's still a centralization chokepoint, but IRC felt more whimsical. ¯\_(ツ)_/¯pic.twitter.com/nFKxADtMux

This is really cute. Every Bitcoin node needs to connect to the P2P network when it first launches—but how do you find your first peer? Well back in 2012, Bitcoin software would connect to a random IRC channel between #bitcoin00 and #bitcoin99 and grab the first IP it saw!pic.twitter.com/jDyOF7IfzJ

Great overview of how DEXes have evolved in the last 5 years by @tomhschmidt of @0xProject https://www.youtube.com/watch?v=M8fBFhi-EE0&feature=youtu.be&t=2002 … In short: Bitshares / Waves (native DEXes) => OasisDEX (ETH onchain orderbook) => Etherdelta (offchain orderbook) => 0x + AMMs => Aggregators like Totle / 1inchpic.twitter.com/fwPMh09E1G

The algorithm eventually generates a contract that if you filled all 8M gas of an Ethereum block with it, it would take 78s to validate. (Given normal block time is ~14s, this would totally mess up consensus.)pic.twitter.com/cpmsrVwImq

Super cool paper breaking #Ethereum's gas model: https://arxiv.org/pdf/1909.07220.pdf … The authors dig up some Ethereum gas mispricings, mostly by messing with I/O heavy instructions. They then code up a genetic algorithm that searches for the optimal smart contract to abuse gas mispricings.pic.twitter.com/YwfT8CxDSq

Great overview of current mixer designs and their performance tradeoffs on Ethereum (commissioned by @MolochDAO): https://github.com/tvanepps/State-of-the-Mixers-Summer-2019/blob/master/README.md …pic.twitter.com/qNSAtEudyn

Crytic looks like an awesome step forward in ETH smart contract security & CI pipelines. Crypto DX will only get better and better. Kudos to the @CryticCI team! https://twitter.com/CryticCI/status/1156439649876893697 …pic.twitter.com/5LAic3kWxi

9/ There's also a telling phrase here: "third party development." I wouldn't be surprised if this means that smart contract developers will need to be vetted and approved by the Libra Foundation. Makes sense post Cambridge Analytica. Think FB developer network.pic.twitter.com/rHp4pY1tuo

6/ At launch, they won't even let developers run arbitrary contracts. Move, their smart contract language, isn't totally specified yet. But initially you will only be able to run THEIR pre-specified contracts.pic.twitter.com/saVMqlX2Pv

3/ We're seeing it already in the political backlash against the Libra announcement (EU, Maxine Waters). Facebook clearly sees this risk, which is why they make repeated references to anti-abuse, AML, chargebacks, and zero tolerance for illegal activity.pic.twitter.com/a4P5lH9OW7

2/ It's important to realize that Libra is run by a consortium of companies that will be held liable for whatever happens on their platform—legally and politically. If fraud, Ponzi schemes, or hacks occur on Libra, these companies will be ripped apart by Congress.pic.twitter.com/gGxuD2skdj

This is so great. Starcraft 1 had a buffer overflow bug that allowed clever map creators to make zany maps, such as this Mario game. When Blizzard remastered the game in 2017, they built in a backwards-compatible emulator that safely retained the bug. http://0xeb.net/wp-content/uploads/2018/02/StarCraft_EUD_Emulator.pdf …pic.twitter.com/Bn0Q4sqHFN

Caught this gem in Haber and Stornetta's 1991 paper on digital timestamping servers (cited by Satoshi in the Bitcoin paper)pic.twitter.com/QlDE4M63TR

End of an era. Godspeed, @balajis. @calilyliu @jagra_ @adayyh @zosegal @mattstoruspic.twitter.com/tfq9Es3CrV