Two big things happened in the last few days that may have an impact far beyond Ethereum land: a judge approved the sanctioning of a smart contract address by OFAC and the the country followed The Netherlands by charging and arresting, a whole year later, a Tornado Cash co-founder.
Bitcoin addresses aren’t part of the Bitcoin blockchain; rather, they’re conventions used by Bitcoin (wallet) software to communicate where coins must be sent to: either a public key (P2PK), a public key hash (P2PKH), a script hash (P2SH), a witness public key hash (P2WPKH), or a witness script hash (P2WSH). Addresses also include some metadata… Continue reading What Is a Bitcoin Address?
If you believe that paper books are free from internet censorship, think again. Books aren’t hand copied by monks anymore, they’re printed from a digital source, in just a handful of places. This digital format is what allows censorship to take place just before a book hits the physical press. In the process of trying… Continue reading Amazon and the Dystopian Future of Book Censorship
You’re at a garage sale and see a wonderful recipe book. “How much? $5? Sweet!”. The seller gives you a form where you fill out your home address, date of birth, a list of websites you recently visited, and several written testimonies from companies you purchased from before, to confirm you would never use stolen… Continue reading How to Sell a PDF Privately with ⚡
An eclipse attack is a type of attack that isolates a Bitcoin node by occupying all of its connection slots to block the node from receiving any transactions and blocks, other than those sent to it by the attacker. This prevents the node from seeing what’s going on in the Bitcoin network, and it potentially… Continue reading Attacking Bitcoin — Eclipse Attacks
I spent an inordinate amount of time this year subtweeting articles, commenting on policy and discussing corona with folks on Twitter. Because I read studies and listened to weeks worth of podcast content on the topic in three languages (e.g. Das Coronavirus Update and This Week in Virology) I’d like to believe I have at… Continue reading How to deal with Corona
I wanted to get an order of magnitude sense of the utility of non-medical masks. Specifically their usefulness against floating droplets at a reasonable distance, and not from someone coughing loudly; those people can easily be avoided. In addition I focus on short term exposure. In other words, should I worry when waiting in an… Continue reading Mask math for fun
North Korea’s “Cryptocurrency-1” Cryptocurrency developer Virgil F. was arrested a few days ago at Los Angeles International Airport. Arresting travelers at the airport right before they leave appears to be a thing for the FBI, e.g. a OneCoin founder was arrested at the same airport on his way out, and Malware Tech was arrested at… Continue reading North Korea’s “Cryptocurrency-1”
Cargo Cult veldexperiment NRC schreef onlangs in hun redactioneel commentaar: Interessanter is de benadering die de Nederlandse denktank Sustainable Finance Lab (SFL) deze maand suggereerde. Nederland is volgens het SFL bij uitstek een geschikt land om te experimenteren met een door de centrale bank gecontroleerde digitale munt, omdat het gebruik van cash in ons land… Continue reading Cargo Cult veldexperiment
Privacy, proportionaliteit en subsidiariteit Onderstaande is een fragment uit de brief die ik in januari 2019 gestuurd heb naar Minister Hoekstra (Financiën) via de internet consultatie Implementatiewet Wijziging Vierde Anti-Witwasrichtlijn. De gehele brief is hier te lezen. De voorgestelde wet is nog steeds in behandeling. Uit recente voorstellen zoals het delen van identiteitsgegevens van cryptocurrency… Continue reading Privacy, proportionaliteit en subsidiariteit