Historic Brass of the Guildhall School and Royal Welsh College of Music and Drama
{"copyright_id":"0x3725d18912784ce7b16f7563bbcda586c0fc2747086c1138eb86dc30728eac74","name":"Historic Brass of the Guildhall School and Royal Welsh College of Music and Drama","registered_at":"2026-06-17T17:44:06Z","symbol":"NIM1470851","token_address":"0x7c8a5d4a8aeac3e60e618f75f35a6835ef7aef36","type":"artist","uuid":"95ed65fa-ea41-4c13-9912-6e3783e0f54f"}
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 0x3725d18912784ce7b16f7563bbcda586c0fc2747086c1138eb86dc30728eac74. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95ed65fa-ea41-4c13-9912-6e3783e0f54f.json and https://artists.proofprofile.net/proofs/artist/95ed65fa-ea41-4c13-9912-6e3783e0f54f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).