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How a Finnish millionaire lost $35M worth of Bitcoin in a gambling scam

Is your cryptocurrency portfolio looking a little light lately? That’s nothing compared to one Finnish investor, who lost 5,500 Bitcoin ($35 million) to an investment scam this year. Bangkok Post reports that businessman Aarni Otava Saarimaa was approached by a group who sought to link him up with some hot investments: shares in a few high-profile companies and a cryptocurrency called Dragon Coin. дальше »

2018-8-13 13:05


A Guide to 99% Fault Tolerant Consensus

Special thanks to Emin Gun Sirer for review We’ve heard for a long time that it’s possible to achieve consensus with 50% fault tolerance in a synchronous network where messages broadcasted by any honest node are guaranteed to be received by all other honest nodes within some known time period (if an attacker has more than 50%, they can perform a “51% attack”, and there’s an analogue of this for any algorithm of this type). дальше »

2018-8-9 04:03


Stellar Partners with TransferTo for Improved International Mobile Money Transfers

Cryptocurrencies and digital assets all have a role to play in the world of remittances and money transfers. Stellar is making inroads in this regard thanks to a new partnership with TransferTo. It’s an important step in the right direction, and one that shows Stellar may be able to rival Ripple in the long run. […] дальше »

2018-7-27 02:00


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Governance, Part 2: Plutocracy Is Still Bad

Coin holder voting, both for governance of technical features, and for more extensive use cases like deciding who runs validator nodes and who receives money from development bounty funds, is unfortunately continuing to be popular, and so it seems worthwhile for me to write another post explaining why I (and Vlad Zamfir and others) do not consider it wise for Ethereum (or really, any base-layer blockchain) to start adopting these kinds of mechanisms in a tightly coupled form in any significant way. дальше »

2018-7-21 23:03


STARKs, Part I: Proofs with Polynomials

Special thanks to Eli Ben-Sasson for ongoing help, explanations and review, coming up with some of the examples used in this post, and most crucially of all inventing a lot of this stuff; thanks to Hsiao-wei Wang for reviewing Hopefully many people by now have heard of ZK-SNARKs, the general-purpose succinct zero knowledge proof technology that can be used for all sorts of usecases ranging from verifiable computation to privacy-preserving cryptocurrency. дальше »

2018-7-21 23:03


Notes on Blockchain Governance

In which I argue that “tightly coupled” on-chain voting is overrated, the status quo of “informal governance” as practiced by Bitcoin, Bitcoin Cash, Ethereum, Zcash and similar systems is much less bad than commonly thought, that people who think that the purpose of blockchains is to completely expunge soft mushy human intuitions and feelings in favor of completely algorithmic governance (emphasis on “completely”) are absolutely crazy, and loosely coupled voting as done by Carbonvotes and similar systems is underrated, as well as describe what framework should be used when thinking about blockchain governance in the first place. дальше »

2018-7-21 23:03


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Op Ed: Addressing the Threat of Cryptomining Malware

One major class of attacks to hit the hacking landscape recently is cryptomining. While cryptomining on its own supports a good cause when being done consciously, it also allows nefarious actors to make a lot of money fast, and, with the sheer number of cryptocurrencies available to mine, it is becoming a popular choice for attackers. дальше »

2018-7-18 23:18


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Promoted: The Future of Online Shopping Is Powered by Spl.yt — A Decentralized E-Commerce Protocol

As a rapidly growing business sector, e-commerce continues to open up new avenues for exploring, comparing and purchasing products worldwide. Spl. yt, a smart contract protocol, aims improve the e-commerce system for buyers and sellers by automating functions currently performed by “middlemen” marketplaces like Amazon, eBay and Alibaba. дальше »

2018-7-16 19:45