What is Attestation?
Attestation — A verifiable statement that something about an agent or its output is true, which another party can check without trusting the source.
Attestation is the primitive that answers can you prove that claim? It turns an assertion about identity, state, or output into evidence a third party can verify.
It is the layer that lets systems trust without taking each other's word. An attestation travels with the claim and stands on its own when checked.
Where attestation sits in the stack
In the four-layer architecture of the agentic web, attestation is a Substrate (L1) concept — it the cited foundation every layer grounds in. See the thesis for how the layers compound.
Attestation in the portfolio
44 positions in the Semantic Substrate portfolio carry the Attestation primitive — 37 available individually, 7 held as a coordinated set. Explore the Attestation cluster →
Quick answers
- What is Attestation in agentic systems?
- A verifiable statement that something about an agent or its output is true, which another party can check without trusting the source.
- Where does Attestation sit in the agentic stack?
- Attestation sits at the Substrate (L1) layer — it the cited foundation every layer grounds in.
- How many Attestation domain positions exist in the Semantic Substrate portfolio?
- 44 positions carry the Attestation primitive — 37 available individually, the rest held as a coordinated set.