| atx_canonicalize | Attestix JCS-style canonical JSON |
| atx_decode_did_key | Decode an Ed25519 'did:key' to its raw 32-byte public key |
| atx_did_key_fragment | Return the multibase fragment portion of a 'did:key' |
| atx_ed25519_verify | Verify an Ed25519 (RFC 8032) signature |
| atx_parse_json | Parse JSON into the canonicalisation value tree |
| atx_public_key_to_did_key | Encode a raw 32-byte Ed25519 public key to a 'did:key' |
| atx_verification_method | Full verification method for a 'did:key' ('<did>#<multibase>'). |
| atx_verify_credential | Verify an Attestix W3C Verifiable Credential offline |
| atx_verify_delegation_chain | Verify a UCAN delegation chain (Ed25519 per link + attenuation) |