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 0xf5c5b053a38526da1b65864daae1b3b84e40b83613334341ed5aa4ec166a3e34. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8d2d0b8-567f-406e-a774-65de690d3310.json and https://artists.proofprofile.net/proofs/artist/f8d2d0b8-567f-406e-a774-65de690d3310.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 0x0b51e3e0c6dff492b42ae5a12c9d4650fe623dae17764690361782caecabc0df. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USJ3D1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb749d5872a2117eaf021b76de875a6328a8123bf2975c66d772234abe41e45b8. 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/USJ3D1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b1dfe5df92380e0abc3729450838101e3aaa63ec8c0a0ede946da167a7b794. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USV291443264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bba69aa845736aeb759a82f4251672f8eadf72854c8ba8f1409ce7f1c60a46a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USJ3D0700023.
The Wierd Compilation Volume II: Analogue Electronic Music 2008, Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa565c34dd67c62521797714d7edefbbd1fc2d1be939fdaf0cd8022d319c2253. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USJ3D0700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf108804a3f18bce435555d9f6aede61d802040c95ccf72bbbad04400c62b1c21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABS1377277.
Kasvetli Kutlama (Martial Canterel Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9c2f2a361bab7157eb3994e3471d0b49e3c2c16244dba3545ea8d451ce9bdf. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:02:19Z), 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/ATR981206514.