AWS Cloud’s New Ledger Database Provides Verifiable History Of Data Changes. The AWS cloud announced Amazon Quantum Ledger Database. It uses blockchain-like technology and provides a verifiable record of data changes in AWS applications. The Amazon Quantum Ledger Database, (QLDB) is available in preview since November last year. It provides a transparent, immutable and cryptographically verifyable transaction log. Centrally trusted authority. It is not a distributed ledger or blockchain technology. These technologies are used in distributed applications that involve multiple parties, possibly untrusted. AWS offers Amazon Managed Blockchain for those situations. [Click on the image to see a larger view.] Amazon QLDB (source : AWS). AWS announced the new offering last week. “Amazon QLDB” is a new type of database that eliminates having to develop your own ledger-like applications. This includes tracking credit and debit history in banking transactions, validating incidents against insurance claims, and tracing an item’s movement through a supply chain network. AWS claims that the new offering will benefit use cases that range from manufacturing to human resource/payroll.

  • Transparent and immutable
  • Serverless
  • Cryptographically verified
  • It is simple to use
  • Highly scalable and performant

AWS’s chief evangelist Jeff Barr demonstrated how QLDB is set up and managed with other services, such as the AWS Command Line Interface, AWS Management Console (CLI), and CloudFormation templates in a blog post on Sept. 10. Barr explained that QLDB, a ledger database is intended to be an authoritative data source (often referred to as a system or record) for stored data. It preserves a complete and immutable history of all data changes that have been made to it. This history cannot be altered, deleted, or updated. QLDB supports PartiQL SQL queries on historical data and provides an API that allows cryptographically verify the authenticity and legitimacy of the history. It is available in the US East (Ohio), US East(N. Virginia), US West, Oregon, EU (Ireland) and Asia Pacific (Tokyo), with more regions coming soon.