This is an old revision of the document!
[Nick][✓ nick, 2020-05-16]Review to make sure I got the words right ..it was bit garbled before
ledger data is comprised of records containing immutable data. This practicality, this means the data can not be deleted or updated. Instead, changes to immutable data are performed using transactions that are applied to the current set of data creating new data that point back to the original data.