Amazon Announces a Blockchain Quantum Ledger and AWS Managed Blockchain

Amazon, the multinational retail company recently announced two services that will employ blockchain and Distributed Ledger Technology (DLT). Very positive news for the ecosystem as adoption by a giant like the Amazon will boost blockchain towards mainstream adoption.The official announcement by the company states that the Amazon Quantum Ledger Database (QLDB) will be their fully managed ledger database that provides a transaction log owned by a central trusted authority. QLDB will use SHA-256 cryptographic hash function. Furthermore, QLDB will track every application data change and works to maintain a comprehensive and verifiable record of changes over time. Amazon also states that currently the service only provides an append-only, immutable journal that keeps track of all changes. The key featured of QLDB as recognized by Amazon are transparency, scalability, speed, and ease of use.