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 0x16d70de4e491658d5a0b4013b13ae0ca9bae7df9eaefa5363d47c5397d2dfa67. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/718692c5-9ad3-448f-a90a-2b6c877c11d8.json and https://artists.proofprofile.net/proofs/artist/718692c5-9ad3-448f-a90a-2b6c877c11d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Taş Plak Meyhaneleri, Vol. 9 (Todori'nin Meyhanesi)
Taş Plak Meyhaneleri, Vol. 11 (Sotiri'nin Meyhanesi)