Binance Reopens 87 Networks Following Historic $6.3 Billion Breach

A shared digital ledger in which records are grouped into blocks and linked so that past entries are very hard to change.

It underpins cryptocurrencies and is tested for payments, supply tracking and record keeping.

A digital currency secured by cryptography and recorded on a blockchain, without a central bank issuing it.

Crypto prices are volatile, and governments are still deciding how to regulate it.

The first and largest cryptocurrency, created in 2009, with a fixed maximum supply and no central issuer.

Its price swings and adoption by funds and companies make it a bellwether for the whole crypto market.