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CoinFabrik
Company blog · blog.coinfabrik.com · on HN as wslhsecuritybusiness
CoinFabrik is the company blog at blog.coinfabrik.com, writing about security and business. Since 2014, 5 different Hacker News readers have linked it 97 times, most often “Censorship of Harmful Data in Blockchains”. It is still writing: the last post was on 2026-03-30, and you can follow it by feed.
Writings about Cryptocurrency, Smart Contracts Audits, Web3 events, FinTech and Blockchain software development services.
Most-linked posts?
- Censorship of Harmful Data in Blockchains2 people · 2 mentions · first linked 2019-10-12
What Hacker News says?
I think the trend of demonopolizing currencies is unstoppable, just take time. I argue that this can be part of a new cold war dimension between countries and when some countries block financial initiatives others fund an opportunity. I wrote a little bit more about this vision in [1]. [1] https://blog.coinfabrik.com/libra-association-a-menace-and-a...
Comment linking /libra-association-a-menace-and-an-opportunity-for-blockchain-ecosystems/
on “France and Germany Agree to Block Facebook's Libra”Submitted What I Have Learned from My Arbitrage Experiences with Cryptoassets as a story · 36 points
HN discussionAnd you are not saying anything about the VM itself which behaves differently in certain cases... Look at our last article on this specific topic: https://blog.coinfabrik.com/smart-contract-short-address-att...
Comment linking /smart-contract-short-address-attack-mitigation-failure/
on “153k Ether Stolen in Parity Multi-Sig Attack”Submitted A Summary of Satis Group’s Latest Cryptoasset Valuation Report as a story · 12 points
HN discussionCoinFabrik | Blockchain and Cryptocurrency Developers | Buenos Aires, Argentina | ONSITE | Part-time and Full-time Offerings | https://www.coinfabrik.com - https://blog.coinfabrik.com - @coinfabrik CoinFabrik develops and audits secure blockchain and cryptocurrency applications and we are looking for developers to join our team. Some of our projects include: • Infrastructure and Apps: o Modifying CKPOOL, Eloipool, a…
Comment linking /
on “Ask HN: Who is hiring? (November 2017)”Submitted Auditing Solidity Code with Slither from Trail of Bits as a story · 11 points
HN discussionIt can be interesting for some people here the research review we recently published about ECDSA and ECIES for the secp256k1 elliptic curve (used in Bitcoin and Ethereum): http://blog.coinfabrik.com/ecdsa-security-in-bitcoin-and-eth... and http://blog.coinfabrik.com/some-comments-on-the-security-of-...
Comment linking /some-comments-on-the-security-of-ecies-with-secp256k1/
on “How to Backdoor Diffie-Hellman”Submitted An Efficient Algorithm to Exploit Arbitrage Opportunities in Crypto Markets as a story · 10 points
HN discussionI see the article full of text just as a SEO tactic. There is no real substance there: > Problem #1: Lack of developer friendliness As we described above, Ethereum solves this problem by design through its expressive programming language and strong developer tooling. The author doesn't have direct experience with Solidity, where the tooling is buggy and there are many subtle ambiguities and security issues that are…
Comment linking /smart-contract-short-address-attack-mitigation-failure/
on “Bitcoin, Ethereum, Blockchain, Tokens, ICOs: Why Should Anyone Care?”Submitted Smart Contract Auditing: Human vs. Machine as a story · 9 points
HN discussionIn July 2016, we created a simple spreadsheet [1] comparing different blockchains and security state of the art at that time [2]. There are things to review there but the theoretical attack to Bitcoin was relatively low for state actors and miners. Miners are not incentivized to do this or do it only as the latest option. It is also important to know that new blockchain technologies such as Solana, Algorand, Avalanc…
Comment linking /cryptocurrency/overview-of-blockchain-technologies/
on “Are blockchains decentralized?”Submitted Blockchain Mediated Prediction Markets as a story · 9 points
HN discussionThere is an additional important change you need to do in order to speed up transactions for testing https://blog.coinfabrik.com/fast-smart-contracts-execution-e...
Comment linking /fast-smart-contracts-execution-ethereum-private-blockchain-development-environment/
on “How to Create a Private Ethereum Blockchain”Submitted Show HN: A Decentralized Blockchain Bridge Between Dogecoin and Ethereum Is Born as a story · 9 points
HN discussionI know that the HN is not fan of crypto but I would like to add a decentralization point of speed cubing: "How To Model A Rubik’s Cube in Algorand’s TEAL" [1] this was written by Guido who is one of the top speedcubers in Latam and was invited to join the discussion here. Algorand was also selected for official chess ratings [2]. [1] https://blog.coinfabrik.com/uncategorized/how-to-model-a-rub... [2] https://www.alg…
Comment linking /uncategorized/how-to-model-a-rubiks-cube-in-algorands-teal/
on “Show HN: I'm building the “chess.com” of speed cubing”Submitted Presenting AlgoExplorer: The Algorand Block Explorer as a story · 8 points
HN discussionI complement with our detailed experiences in "What I Have Learned From My Arbitrage Experiences with Cryptoassets"[1] and in "An Efficient Algorithm to Exploit Arbitrage Opportunities in Crypto Markets" [2]. TLDR: it is very difficult to exploit arbitrage opportunities. [1] https://blog.coinfabrik.com/what-i-have-learned-from-my-arbi... HN thread: https://news.ycombinator.com/item?id=17249163 [2] https://blog.coinf…
Comment linking /an-efficient-algorithm-to-exploit-arbitrage-opportunities-in-crypto-markets/
on “Open sourcing crypto-arbitrage bot in Python – back to the dawn of crypto hype”Submitted Using the CardContact SmartCard USB HSM in an Ethereum PoA Chain as a story · 8 points
HN discussionIt is an decentralized exchange / automated market maker. A comparison with Uniswap and Balancer here: https://blog.coinfabrik.com/automated-market-making-mechanis...
Comment linking /automated-market-making-mechanisms-and-issues-in-uniswap-balancer-and-curve/
on “PayPal Bids $500M to Acquire Crypto Startup Curv”Submitted Some Insights into Cardano´s Blockchain as a story · 8 points
HN discussionBy coincidence we just published an article [1] comparing automated tools to human auditing in smart contracts. I am reviewing your article for expanding ours. At ethdev[2] someone suggested to check the Slither[3] tool also. [1] https://blog.coinfabrik.com/smart-contract-auditing-human-vs... [2] https://www.reddit.com/r/ethdev/comments/a4492r/comment/ebbn... [3] https://github.com/trailofbits/slither
Comment linking /smart-contract-auditing-human-vs-machine/
on “How to steal Ethers: scanning for vulnerable contracts”Submitted Cryptocurrency Backed Lending Platforms as a story · 8 points
HN discussionThis is our benchmark for Slither: https://blog.coinfabrik.com/auditing-solidity-code-with-slit... and also another for Securify: https://blog.coinfabrik.com/auditing-with-securify/
Comment linking /auditing-with-securify/
on “Manticore: A Symbolic Execution Framework for Binaries and Smart Contracts”Submitted A Review on Cryptoasset Valuation Frameworks as a story · 8 points
HN discussionIf you are interested, last November we benchmarked Manticore against other security tools based on common Ethereum smart contract bugs. Here are the results https://blog.coinfabrik.com/smart-contract-auditing-human-vs...
Comment linking /smart-contract-auditing-human-vs-machine/
on “Manticore: A Symbolic Execution Framework for Binaries and Smart Contracts”Submitted Emerging New Trends in Blockchain Technologies as a story · 8 points
HN discussionThere is an important part of the multisig puzzle missing in the article: the need for an out of band protocol to communicate copayers for joining a wallet and spending bitcoins. This is something that Copay ( https://copay.io ) does but there is no standard way to do this. There are other issues. For example, Coinbase doesn't support it fully. See this thread for more info: https://twitter.com/coinfabrik/status/661…
Comment linking /independently-generating-your-private-key-for-coinkite/
on “The state of Bitcoin multisig”Submitted Live Updated Cryptocurrency Investment Tracking Spreadsheet as a story · 8 points
HN discussionYes, we develop many cryptocurrency/blockchain applications (e.g. Bitcoin, Ethereum) using Node.js under Windows. Some people use Visual Studio (I think the best) while others use WebStorm. The issue with path length is almost always experienced with Visual Studio and when it is solved is because the developer moved the project to C:\ the same project works well with WebStorm. I don't remember having issues with pat…
Comment linking /installing-copay-in-microsoft-windows/
on “Ask HN: How well does the Windows version of node.js work?”Submitted A Short Guide Through the Universe of Blockchain Based Micropayment Systems as a story · 7 points
HN discussion