„We were in the zone. We’d done this before.“ On Wednesday, an anonymous hacker (or hackers) stole $32 million worth of ethereum’s cryptocurrency, ether, from three multi-signature wallets thanks to a vulnerability in the contract for the wallets. A volunteer group of coders calling themselves the White Hat Group took it upon themselves to „rescue“ […]
Abstract. Smart contracts in Ethereum are executed by the Ethereum Virtual Machine (EVM). We defined EVM in Lem, a language that can be compiled for a few interactive theorem provers. We tested our definition against a standard test suite for Ethereum implementations. Using our definition, we proved some safety properties of Ethereum smart contracts in […]
The cryptocurrency and blockchain security pioneer Ledger has secured a $7M Series A funding led by MAIF Avenir, with the participation of Xange, Wicklow Capital, GDTRE, Libertus Capital, Digital Currency Group, The Whittemore Collection, Kima Ventures, BHB Network and Nicolas Pinto. This latest investment follows a $1.5M round in 2015 and brings the total funding […]
Ethdrain Python 3 script allowing to copy and index the Ethereum blockchain in an efficient way to ElasticSearch by connecting to a local node supporting RPC (tried with Parity). I hardcoded the use of Elasticsearch but feel free to fork it to support others. Pull requests are welcome! As of now, this tool saves all […]
The best API for getting cryptocurrency pricing, OHLC and volume data from multiple exchanges. We have integrated so far with: BTC38, BTCC, BTCE, BTER, Bit2C, Bitfinex, Bitstamp, Bittrex, CCEDK, Cexio, Coinbase, Coinfloor, Coinse, Coinsetter, Cryptopia, Cryptsy, Gatecoin, Gemini, HitBTC, Huobi, itBit, Kraken, LakeBTC, LocalBitcoins, MonetaGo, OKCoin, Poloniex, Yacuna, Yunbi, Yobit, Korbit, BitBay, BTCMarkets, QuadrigaCX, CoinCheck, […]
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‘This can revolutionize assistance to vulnerable families across the globe’ The World Food Programme (WFP) is testing the use of blockchain, a bold technology that can potentially transform the fight against hunger. Blockchain technology, most famously associated with the crypto-currency Bitcoin, offers unique opportunities for humanitarian agencies to provide the best-possible assistance to vulnerable people […]
What we can learn from the evolution of another groundbreaking technology. Even years into the deployment of the internet, many believed that it was still a fad. Of course, the internet has since become a major influence on our lives, from how we buy goods and services, to the ways we socialize with friends, to […]
The top three winners and a finalist of the event are all Ethereum-based platforms. On February 14, 2017, the winners of the Blockchain Virtual GovHack were announced during a presentation ceremony at the World Government Summit, a government-sponsored event that took place in Dubai that focused on smart city initiatives and blockchain powered governance. Project […]
An alliance of about 30 companies, including Microsoft and JPMorgan Chase, has plans to standardize data gathering and tracking with software that is seen as harder to hack. SAN FRANCISCO — Microsoft, JPMorgan Chase and other corporate giants are joining forces to create a new kind of computing system based on the virtual currency network […]