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 0xf93f29212f8b04443bf860fbe80594b03a1dfb0c08615cf778338eba99a2b87a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ca7d108-5311-47a4-86d1-d6a21458e3e7.json and https://artists.proofprofile.net/proofs/artist/9ca7d108-5311-47a4-86d1-d6a21458e3e7.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 0x8b223d445b1f514f3aaf3219f7bbb62e7679146c64908e63117fdce604b9b202. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP2312707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a55bb8d6079bf56082014f346d19ad51e0d2376db621c645c6d57da76885c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92393767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb8cfc56b20e6af1cd518b46f5578a4fe55862151e6e3610160d8567d8757f2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92367531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dd157ace4163b9447e3995bcc788241af7951157663f0d43d434cd042f8ba0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2301922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb751ddbf928acd5891060e3061fb847107c05aec6590c76fa9d087b1ceeff76b. 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/ES71G2238490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1f233402466225f2631066e810da6c168864a62e875a4f6f94147e2f86c695. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2203238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d72a01667fa680d368d4d24a26a2de2aed23920e4306f848ed6ae8125dbc97. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES64E2200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192f0ad318a487b8d4df7ad861e8a83f5e2863314a14ee144335884503c60fe6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES65E2200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c02af698e8d03441a23516cb859b521cc30baea9dfc52552e45790192aad5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES65E2100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b81a3a52c3681219f5a5fd23aa49895231ce39e75746652ac72c46b08b545e4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES64E2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60fb3aa3a70cbee3cccb19242c0a74c5aed0821449160bb753d12a7dfdfd89c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62154968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad3816155d64c383cd3076109919eba5e4250114f53037c465b88dea457f647. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2130679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed576291c50b733a6c75bf1c69759dfbd6a2d23d823ea35bc000567f624b57a7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME2039030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f1d149de1c4aa8984c2ae4fe5fbc7a685288a12061927a033203c55581ad49. 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/ES71G2022756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe761d82ac94b0d3022d878fd4a16e33e58f6fad7c694b4734b0cccf65373ab91. 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/QM6MZ2030251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2958c4d7d5621919af1740a67f87459e853cef1851b2803ba1f16ff6325b536f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFMF1909325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbf371924308aa3a551ef222032492b8e2414463b2ff7cd220a20276dc877d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMBZ91968320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054df4b02561cef04339bb60263ff965c568e466f5ae74005163f88be1b7dfbb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2031804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338436a4a782b0a3fd5cb280de3b25804e579caad10f72797ce6d28ea5ef398a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES64E2473808.