a system used to make a digital record of all the occasions a cryptocurrency (= a digital currency such as bitcoin) is bought or sold, and that is constantly growing as more blocks are added

Blockchains are appearing in a variety of commercial applications today. 如今区块链已经出现在各种商业应用中。

The first prominent use of blockchain was bitcoin. 区块链的第一个突出应用是比特币。

Blockchain technology has the potential to transform business operating models. 区块链技术具有改变商业运营模式的潜力。