# proof-kinds: one builder for every AIP-23 proof kind

A generic builder of AERE Proof Protocol envelopes (AIP-23) for the standard proof kinds: `data`, `execution`, `identity`,
`compliance`, `runtime`, `location`, `device`, `payment`, `ownership`, `time`, `block`, `authorization`, `settlement` and
`provenance`. Every kind produces the same envelope (`statement` plus `statementHash`, the SHA-256 of the canonical statement
text), so the same AIP-23 reference verifier checks all of them with no kind-specific verification code.

```
import { buildProof, KINDS } from './proof-kinds.mjs';
const envelope = buildProof('runtime', { host, artifactContent, attested, matches: true, createdAt });
```

A kind is a schema: its required fields, some of them digests, plus `createdAt`. Raw content given for a digest field is hashed
(bytes as they are, strings as UTF-8, other values as their JSON text), and a value that is already a 32-byte digest is kept, so
an envelope carries digests, never the raw content. A missing required field stops the build with an error instead of producing
an incomplete envelope. Notarization and post-quantum finality come from AIP-23, not from this builder.

Test: `node proba-proof-kinds.mjs` (24 checks: every kind built and found `VALID` by the reference verifier, six negative
controls such as content changed after hashing or a required field missing, no raw content in any envelope, bytes hashed as
bytes). It needs the AIP-23 reference verifier: `AERE_VERIFY_PROOF=<path to verify-proof.mjs>` (from the `aere-node`
repository, after `npm install` there); without it the test reports that it did not measure and exits with 2. Node.js 24.