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 0x38cdb23e92ca765bc7a9d4f4b4d480d14667b496930382c6cff59a4d50aa6905. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09bac6c9-8238-4a06-9c70-ec810b7a4f9a.json and https://artists.proofprofile.net/proofs/artist/09bac6c9-8238-4a06-9c70-ec810b7a4f9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
BBQ & Beer Anthem 3.0 (feat. Feest DJ Maarten)