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Ending Bitcoin Support
Starting today, we are winding down support for Bitcoin payments. Over the next three months we will work with affected Stripe users to ensure a smooth transition.
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Introducing Cloudflare’s IPFS Gateway
Today we’re excited to introduce Cloudflare’s IPFS Gateway, an easy way to access content from the the InterPlanetary File System (IPFS) that doesn’t require installing and running any special software on your computer.
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Keybase is now supported by the Stellar Development Foundation
You're reading the Keybase blog. There are more posts . When you're done, you can install Keybase .
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Building for the Blockchain
If you’re here, we assume that you’re a developer/hacker who’s intrigued by the blockchain. You’re convinced that you understand how it works and now you’re itching to figure out what the blockchain means for you and your developer skill set.
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Bitcoin is a Cult
The Bitcoin community has changed greatly over the years; from technophiles that could explain a Merkle tree in their sleep, to speculators driven by the desire for a quick profit & blockchain startups seeking billion dollar valuations led by people who don’t even know what a Merkle tree is. As the years have gone on…
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A Practical Introduction to Blockchain with Python
Adil Moujahid, Bridging Tech and Art
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Systems built on trust, norms, and institutions function better than blockchain
Blockchain is not only crappy technology but a bad vision for the future. Its failure to achieve adoption to date is because systems built…
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My professional opinion as a blockchain researcher: I don’t see the point (yet)
I’ve spent the last 15 months researching the implications and possibilities of blockchains and related “distributed trust technologies” from a business and societal point of view…
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Website Glitch Let Me Overstock My Coinbase
Coinbase and Overstock.com just fixed a serious glitch that allowed Overstock customers to buy any item at a tiny fraction of the listed price. Potentially more punishing, the flaw let anyone paying with bitcoin reap many times the authorized bitcoin refund amount on any canceled Overstock orders.
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Turning Down a Blockchain Job Offer
I have recently received a job offer to work on a blockchain implementation. While the offer was very generous, I had to turn it down. In this post I want to collect the thoughts that went into my decision process leading to this conclusion.
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Why Is It Taking 20 Minutes to Mine This Bitcoin Block?
You have just made a Bitcoin transaction and you are eager to see if it appears in the next block. You know that the expected time between Bitcoin blocks is 10 minutes. You check the log of your Bitcoin node. It has been 7 minutes since the previous block. You recall that blocks occurrences in Bitcoin are a Poisson…
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The Blockchain Bubble Will Pop, What Next?
Last week, I flew from London to Tel Aviv. The man sitting to my right was a road warrior, just this side of a late-night bender in London. He was rocking an ostentatious pair of
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It can all go to zero
Perspective can be a useful thing. Cryptocurrencies have had a bad 24 hours. Last night Amy and I watched The Big Short for the second time. If you’ve never seen
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Proof-Of-Work is a Decentralized Clock
This is an explanation of the key function on Proof-of-Work in the Bitcoin blockchain. It focuses on the one feature of Proof-of-Work that is essential and shows that other features often talked about such as security are secondary side-effects, useful, but not essential. This explanation rests on illustrating a few…
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Breaking the Ledger Security Model
In this post, I’m going to discuss a vulnerability I discovered in Ledger hardware wallets. The vulnerability arose due to Ledger’s use of a custom architecture to work around many of the limitations of their Secure Element.
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How I became Leonardo da Vinci on the Blockchain
Yesterday at the CogX conference, I sat in a room listening to companies pitch their blockchain based startups. Because I hate myself. One in particular caught my attention. On the surface it seems to solve an important economic problem - art forgery and provenance. By putting your artwork on the "BitCoin Blockchain"…
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Ethereum programming for web developers
HappyFunCorp ships AI-enabled products and custom software for web, mobile, TV, and more. Trusted by leading startups and Fortune 500 clients since 2009.
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Lightning on Stellar: Technical Spec and Roadmap
The technical specification and timeline for Lightning on Stellar, including working examples and an explanation of the new BUMP_SEQUENCE operation.