Ledger is a new feature that offers the power of blockchain in Azure SQL Database and SQL Server 2022. We’re making the data in the SQL database verifiable using the same cryptographic patterns seen in blockchain technology, while keeping the flexibility and performance of a traditional database. Ledger databases are centrally managed databases that can also cryptographically attest to other parties, such as auditors or other business parties. Ledger ensures your data can be trusted and hasn’t been tampered with.
How it works
Each transaction that the database executes is cryptographically hashed (SHA-256). Transactions are cryptographically linked