Glossary
L1 Guarded
Records hash-chained so any change is evident to you. Available.
Read the termGlossary · Term 04 of 39
Assurance level
An assurance level is a level of claim about the evidence elan1 produces, never a product tier. L1 Guarded means records are hash-chained, so changes are evident to you. L2 Attested adds signatures and outside timestamps an auditor can check offline. L3 Proven begins when an outside auditor accepts the evidence in writing.
In one sentence: A level of claim about the evidence (L1, L2, L3), never a product tier.
01In more detail
What it means in practice
Levels describe what you can rely on. They are not tiers you buy. L1 asks "Can I let this run?", L2 asks "Can I hand this over?", and L3 asks "Does this survive the vendor?"
Every claim on this site is tied to the level and the mode in which it is true. L1 Guarded and L2 Attested are available; L3 Proven begins on an outside auditor's written acceptance.
02Where this shows up in elan1
On every capability claim, the claims register and the proof-record specimens.
04Questions
Assurance level: common questions
No. An assurance level is a level of claim about the evidence, not a product tier you buy. L1 Guarded, L2 Attested and L3 Proven describe what you can rely on, and the price book shows what each costs separately.
It depends on who must rely on the record. L1 Guarded suits teams checking their own records; L2 Attested suits handing evidence to an auditor, lender or insurer, who can check it offline. L3 Proven begins only when an outside auditor accepts an L2 bundle in writing.
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.