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 0x6b7c302eb2081bf42b3540bdaee05b72547626c59987134732cc66e5df737882. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf8a6868-9f42-4249-820d-bf5be13be92d.json and https://artists.proofprofile.net/proofs/artist/cf8a6868-9f42-4249-820d-bf5be13be92d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x7eedd3aebb133c17bb46d22f57f20783822160468c8ed85d3ac50beb88293385. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:31Z), 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/IEABJ0200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddcd55b3aebfe47facc39d99dfcd66f84beffff07dcf150647653740cfc25c0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/IEABJ0200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcea597bd7d878fec2194d1ada9e801da73c42ee82b723c0ca06f5510bb5a71e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IEABJ0900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d12e2aef4a847e73a7ee0a2c4b529da663aab0eac38dd60ff46e643ee54b1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IEABJ1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9fd5c082b4c8da6237f35019b0789b2e4f9d7d4f2a3028fa73859057bc8299. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/IEABJ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea513c47fb6db00b14b8fb276dd94a5b095f1b1099779dbf21cb13a1bbf74e7d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IEABJ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f82690da5282ff52d17d8c0cf3d0754d32f3804073b64a7a593187acfc91e42. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/IEABJ2400003.
Ain't No Woman Gonna Make A George Jones Outta Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf02764084bd5f708cfeacc520d1bc3bfded6b7c0e6d48356e761a206442c6bf. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:30:31Z), 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/IEABJ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85482fb80a4eff286db44cc938d0ea27eab591baf340c8513cdd06fd93562b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IEATB0600042.