Andreas M. Antonopoulos, Gavin Wood (2018): "Ethereum timeline" . In Mastering Ethereum: Building Smart Contracts and DApps, page 329. O'Reilly Media; 424 pages. ISBN9781491971918
economist.com
«Blockchains: The great chain of being sure about things». The Economist. 31 de octubre de 2015. Consultado el 18 de junio de 2016. «The technology behind bitcoin lets people who do not know or trust each other build a dependable ledger. This has implications far beyond the crypto currency.»
Iansiti, Marco (January 2017). «The Truth About Blockchain». Harvard University. Consultado el 17 de enero de 2017. «The technology at the heart of bitcoin and other virtual currencies, blockchain is an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way.»