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 0xb4bf72d45a39d0eb444064d48a35ba1c695d5568e95ac3034ecb7b4ce673214b. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35d50855-0e2c-433f-832f-9c5a89531150.json and https://artists.proofprofile.net/proofs/artist/35d50855-0e2c-433f-832f-9c5a89531150.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Expedientes Secretos: El Hijo De Nadie (Soundtrack of the series - Chapter 1)
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 0xd190d13a5577e7b1c604dd6a215e52b6f22df551fbfc8c3f72a2580b6e8a7878. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ES75E2302036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ffd355e3889906e81d3dc28921b1055f4642f5581c0f3d004942b064fa4f83. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:41:51Z), 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/ES75E2400918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b9433a260c0a5776021350ab2b3bd0503f5ff7ef8858defd81eadd4516ff5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:44:19Z), 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/ES75E2403091.