Glossary
L2 Attested
Adds signatures, outside timestamps and a free offline verifier. Available.
Read the termGlossary · Term 19 of 39
L1 Guarded
L1 Guarded is elan1 Govern's first assurance level. Every proof record is SHA-256 hash-chained to the one before, so any change to an earlier record is evident to you when you recompute the chain. It is tamper-evident, not tamper-proof: it shows that a change happened, rather than claiming one is impossible.
In one sentence: Records hash-chained so any change is evident to you. Available.
01In more detail
What it means in practice
L1 asks "Can I let this run?" It adds the Right Path, approvals, a single writer and a tamper-evident record you can read.
At L1 you check a record by recomputing its digest and comparing it with prev_digest on the next record. Tamper-evident to you; not signed.
02Where this shows up in elan1
The baseline level of every governed write; the stamp at the foot of each specimen.
Defined in the elan1 glossary · Last reviewed 10 Oct 2026. Definitions change only with a dated note.
// SEE IT
See the term in a governed action.
The walkthrough follows one write from intent to proof record, using the words in this glossary.