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 0xcd42d7329702b092e6c0e8fbc25be464d38dbc45169fb06f06142b55a6b083cd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67923234-c3bd-4b36-8c03-06777c9cbc11.json and https://artists.proofprofile.net/proofs/artist/67923234-c3bd-4b36-8c03-06777c9cbc11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ghostwire Tokyo (Original Game Soundtrack)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b48998f62cd2c6821d94bb69ef5c73bb83446fec85ecc524e123bf6c39f27b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMTH32200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f94363e887352cebb292e52671f062bd102041d69a4fb149b54720b4109f9f1. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMTH32200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800ac7dd31070b159f96ea520cc87693df1a6585538308fd6b2e54cbc3023784. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMTH32200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebaba83c5554cfe61bfaa421846401900811f228b5262309d4378d091396ce6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMTH32200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d10be9b2b12c65ec787f3fb521de02605c12d9ca9a08b9f938d052ad49998f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:17:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMTH32200047.