Ambit — The rule ledger
Every rule is a deterministic computation with a legal citation and a permanent URL, so a figure stays traceable to the rule and source that produced it. Rules are organised by the body of law they belong to.
Reference, not tax advice.
How the ledger is kept
Published sources are checked daily. A detected change opens a pull request and is reviewed by a person before any rule moves — nothing is updated automatically, and each rule carries the date its sources were last read.