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LaurentMT Profile picture
LaurentMT
@LaurentMT
dev@oxt_btc//bitcoin, privacy, data analysis&dataviz//PGP: 0x74D301663DF993B8D1C68B50A059A03E81CF61C9//"Idiot, outright dishonest and extremely incompetent"
Apr 25 • 14 tweets • 2 min read
A thread about this statement made in Samourai's indictment, from the perspective of a person who has extensively studied the design of zerolink implementations and who has also analyzed the on-chain activity of some crypto money launderers. Image For a long time, the behavior of crypto money launderers has puzzled me. It was literally as if they tried to avoid all the best practices that you may expect from a privacy conscious user, screwing their privacy and the privacy of others users at the same time.
Feb 22, 2022 • 10 tweets • 4 min read
An article published this morning by @laurashin has raised a lot of questions about the ability of Chainalysis to "de-mix" Wasabi Wallet transactions.
Good news: It appears that Laura's book contains a reference to the transaction sending 50BTC to Wasabi Wallet (thanks @raw_avocado for the info).
May 24, 2020 • 14 tweets • 4 min read
This week, the movement of 50 old bitcoins has received a lot of attention. Meanwhile, @ziggamon was staring at the mempool...
A short discussion with him convinced me to check the case. That seemed like an easy one. God, I didn't know the monster that he was observing.
Aug 2, 2019 • 30 tweets • 10 min read
On-chain mixing - A few thoughts about the challenges created by heterogeneous participants, postmix behaviors and statistical analysis. #SorryForTheLongThread Disclaimer: It's well known (and repeated) that 2 important challenges for on-chain mixers are sybil attacks by malicious actors and the need for a large anonymity set. So, they won't be the subject of this thread.
Feb 25, 2019 • 13 tweets • 3 min read
Time for a little story #BitcoinTales An ancient legend (ok, it isn't really ancient considering that I just invented it) says that a giant white whale lives in the depths of the Bitcoin blockchain. If you're able to find it and if you feed it with "dirty" coins, it will give you "clean" coins.
Nov 29, 2018 • 17 tweets • 3 min read
A few random thoughts about the recent announcement of Bitcoin addresses entering the OFAC list of sanctioned parties.
An obvious question here is: What does it mean when we say "nobody is permitted to engage in any transaction with one these addresses" ?
Mar 31, 2018 • 10 tweets • 2 min read
For some reasons, this announcement is somewhat special for me ("disclosure" included in the thread).
In early 2016, while I was looking for fundings, the team of what would later become CypherTrace, contacted me for the acquisition of OXT.
Dec 20, 2017 • 7 tweets • 2 min read
Managing the fragmentation of their utxo set will become a critical factor for BTC services. For example, this entity (oxt.me/entity/tiid/48…) is a wallet controlled by Coinbase. To date, it owns around 203 BTC split in 1,464,545 utxos !
With BTC at $15.8k, it means $3.2M with an average utxo value of 2.2$. #DustInTheChain