Jette (; ) is one of the 19 municipalities of the Brussels-Capital Region, Belgium. Located in the north-western part of the region, it is bordered by the City of Brussels, Ganshoren, Koekelberg, and
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4d14eaa73b17ac51ac7eacf6b86fe15b3bad32205ef7f7090d36275f3fd848. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a30eba19-050e-4a0f-b854-8e0d1c995e99.json and https://artists.proofprofile.net/proofs/artist/a30eba19-050e-4a0f-b854-8e0d1c995e99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).