Function attest_prov

atomic-canonical/src/prov.rs:196–198

Project + attest a turn's provenance: the PERSON's identity + keypair sign the named subgraph through the shared [`crate::proof::attest_value`] path (fills a top-level `attributedTo` from the signer's `did:atomic`, computes `contentHash`, attaches an `eddsa-jcs-2022` Data Integrity proof).

(input: &ProvActivityInput, identity: &Identity, keypair: &KeyPair)

/// top-level `attributedTo` from the signer's `did:atomic`, computes
/// `contentHash`, attaches an `eddsa-jcs-2022` Data Integrity proof).
pub fn attest_prov(input: &ProvActivityInput, identity: &Identity, keypair: &KeyPair) -> Value {
    proof::attest_value(project(input), identity, keypair)
}

/// Verify a signed PROV subgraph against a public key — thin wrapper over
/// [`crate::proof::verify_value`] (content-hash integrity + signature + the