Читать книгу Cryptocurrency All-in-One For Dummies - Peter Kent, Kiana Danial - Страница 38

A ledger is the age-old record-keeping system for recording information and data. Cryptocurrencies use a public ledger to record all transactional data. Everyone in the world can access public blockchains and see entire transactions happening with cryptocurrencies.

Note that not all blockchains use a public ledger. Some businesses and financial institutions use private ledgers so that the transactions aren’t visible to the world. However, by doing so, they may contradict the original idea behind blockchain technology.