What is a blockchain?

Blockchain (English name: blockchain or blockchain) is a decentralized distributed ledger, which is stored in blockchain and is safe and credible. It combines distributed storage, point-to-point transmission, knowledge mechanism, cryptography and other technologies, and records transactions and information by increasing blocks to ensure the security and transparency of data. Blockchain originated from Bitcoin and was first proposed by Satoshi Nakamoto in 2008. As the underlying technology of bitcoin, blockchain has gradually evolved from the initial bitcoin network to a global technology, attracting global attention and investment.