A distributed ledger is a database that is consensually shared and synchronized across multiple sites, institutions, or geographies, accessible by multiple people. It allows transactions to have public "witnesses," thereby making a cyberattack more difficult because all the distributed copies need to be attacked simultaneously for the attempt to be successful. Distributed ledgers are the backbone of most blockchain technologies, where they are used to record transactions across computers in such a way that the registered transactions cannot be altered retroactively. For a deeper understanding of how distributed ledgers work and their benefits over traditional databases, you might find this article useful:
https://paybis.com/blog/glossary/what-is-a-distributed-ledger/ It provides a detailed explanation of their structure and practical applications in various industries.
