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How we recovered $300k of Bitcoin
Story time! Around twenty years ago, I was working as a reverse-engineer and cryptanalyst for AccessData while getting my Physics degree at BYU. It was the late 90s and early 2000s. The US governme…
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Ethereum Is a Dark Forest
A horror story.
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Escaping the Dark Forest
On September 15, 2020, a small group of people worked through the night to rescue over 9.6MM USD from a vulnerable smart contract. This is our story.
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Bitcoin From Scratch – Part 1
Understanding the fundamental building blocks of Bitcoin can be daunting for some developers. The purpose of this guide is to explain through simple pieces of code, how Bitcoin works.
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What Was TON And Why It Is Over
telegra.ph/what-was-ton-and-why-it-is-over-05-122020287 points162 commentsCrypto & Blockchain details
For the last 2,5 years some of our best engineers have been working on a next-generation blockchain platform called TON and a cryptocurrency we were going to name Gram. TON was designed to share the principles of decentralization pioneered by Bitcoin and Ethereum, but to be vastly superior to them in speed and…
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Urbit OS 1
OS 1 is somewhere between ‘productivity software’ and a ‘social network’. We think it’s the beginning of an altogether new breed of social computing.
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Kraken Wins Bank Charter Approval
We are thrilled to announce that the State of Wyoming has approved Kraken’s application to form the world’s first Special Purpose Depository Institution (SPDI), called Kraken Bank. Headquartered in Cheyenne, Wyoming, Kraken Bank is the first digital asset company in U.S. history to receive a bank charter recognized…
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Bitcoin is more like ham radio than the early internet
People in the bitcoin community often make fun of me as a nocoiner . That is, I don't have any bitcoins and am vocal about that fact. (Ne...
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Crypto Fund II
We’re excited to announce a new $515 million fund that will be used to invest in crypto entrepreneurs, networks and businesses.
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So you want to roll your own crypto?
A coworker of mine asked: How are people supposed to learn (from mistakes) if they don't roll their own crypto? The short answer is do roll ...
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GoDaddy employees used in attacks on multiple cryptocurrency services
Fraudsters redirected email and web traffic destined for several cryptocurrency trading platforms over the past week. The attacks were facilitated by scams targeting employees at GoDaddy , the world’s largest domain name registrar, KrebsOnSecurity has learned.
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How to decrypt WhatsApp end-to-end media files
At the center of the "Saudis hacked Bezos" story is a mysterious video file investigators couldn't decrypt, sent by Saudi Crown Prince MBS t...
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Bitcoin Mining’s Three Body Problem
Bitcoin mining is a complex phenomenon that connects hardware and software, the energy and financial markets. Invisible rules govern every aspect of it. The performance of an individual operation is determined by various external factors that are often hard to quantify and almost impossible to forec
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MakerDAO gets stress tested as ETH price plummets
In the midst of extreme market-wide turmoil, MakerDAO is facing one of its biggest challenges to date. The main form of collateral in the system, Ether, has dropped over 30% in a 24-hour timeframe marking one of the worst days in its short history. This has triggered an unprecedented wave of liquidations as loans…
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Resources for understanding cryptocurrency and blockchain technology
If you are interested in learning more about cryptocurrencies, crypto networks, and blockchain technology, here's a short collection of some of our pieces.
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New Cryptographic Tools on Keybase
You're reading the Keybase blog. There are more posts . When you're done, you can install Keybase .
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A 96 Bitcoin ransom payment ends up on Bitfinex
"Hello, to get your data back you have to pay for the decryption tool, the price is $1,200,000... You have to make the payment in Bitcoin...
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Critical flaw in Trezor hardware wallets
Kraken Security Labs has devised a way to extract seeds from both cryptocurrency hardware wallets offered from industry leader Trezor, the Trezor One and Trezor Model T. The attack requires just 15 minutes of physical access to the device. This is the first time that the detailed steps for a current attack against…
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A Review of Consensus Protocols
The consensus problem is a fundamental problem in multi-agent systems which requires a group of processes (or agents) to reliably and timely agree on a single data value. Although extensively discussed in the context of distributed computing it’s not exclusive to this field, also being present in our society in a…