AVN-ID Registry · Issued Identifier
AVN:PT-8125-NB-260529
✗ Signature invalidIssued 2026-05-23 17:21 UTC by avena-terminal-v1
Identity
Country (ISO 3166-1)
PT
Postal code
8125
Category
NB · New-build
Sequence
260529
Cryptographic provenance
payload_hash = sha256(fingerprint)
8a067ae0f406d09db480840202bc1d6c3374726ea3444ad31d25b56ae0e0b637
signature = HMAC-SHA256(avn_id::payload_hash, secret)[:32]
b854b8fbd90131ed5f087bfa0a2d2159
issuer = avena-terminal-v1
issued_at = 2026-05-23T17:21:45.057+00:00
Any consumer can verify this AVN-ID by calling GET /api/v1/avn-id/AVN%3APT-8125-NB-260529— the response carries the same signature and a recomputed verification result. If they don't match, the record has been tampered with.
Canonical fingerprint
{
"lat": 37.0737,
"lng": -8.1186,
"postal": "8125",
"country": "PT",
"built_m2": 187,
"category": "NB",
"source_ref": "PT-VIL-001",
"source_portal": "casa-sapo"
}These inputs are hashed deterministically to produce payload_hash. Issuing the same fingerprint twice returns this exact AVN-ID — the registry is idempotent.