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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8885b79bc14db58309123b49e5ea9774ff80769c1ba1e2e6388ce7a6fa031e2. 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/d5c45b6e-42c1-48e8-a016-d43109d66956.json and https://artists.proofprofile.net/proofs/artist/d5c45b6e-42c1-48e8-a016-d43109d66956.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1d8da93c1789412c310a77a8ad0f3e75e7f89c47f6543420cb329cf68fde22. 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/QM4TW1832386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7adad2c2ae5b21f7290bb74f161093db31086bc05add4ab7f1102e4f784e55f. 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/UK6BP1800200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19718bd7a7601e4e9d53fd0147e3843237a41c54e43cbf80d9a5592022c2a6eb. 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/QM4TW1964368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f2adc7e9838b0ac38c63cf037670978be4832c5639fb8be095093294f2fd1a. 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/UK6BP1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b8644765568a8d6f273b1000b1ffc01edf1a0a141a19100befc83c2410bb9d. 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/UK6BP1800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd9dcbf05bcc7d0d1c3a191e82f659c0796cb55f0c80cb462c9ff7a389f22d2. 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/QMFME1305978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e4649a44eb2ae4adb17ac8b9db72b0027d4c399951817f208f7cf5126b8226. 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/QMFME1305980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff03fcc9e8b47291f2601690eff5d9037a6b1bc149b5f73fef85a33254618e9. 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/QMDA61501402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954da3fe6ca7f069b05e2b25d730cb188a11058c6fdf71f762cf09baa4b8d744. 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/QMDA61501403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22078d7470fa2c5d450f289ab54d394992a0440a8acd1fc5927176f4c63021dd. 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/QMDA61501404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf3bd2f7b750030cf48a5326a1974b4a7d125cf8daf9c01ee28776061fd798. 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/QMDA61501405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91cbaf683d8858eb6f57efcbb5cb818037da69f6f661e1b2ca1837ec7bdab12. 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/QMDA61501406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6d96af5eee931a42821f36a71273122c9507559b7a007431d051f2f25b3d4e. 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/QMDA61501407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117cd83fc4bdeb1a4c7bcfc60e1bcc0dfb849cb4cbaa829f7879c062ae6cdacb. 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/QMDA61501408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb4265d1b0f90b1d211c224d63d83a8672ac4ec392eb22eb22360e38e7977e. 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/QMDA61501409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6640404185e82552fca97026e5014383bd80475588d2dfed35e727a44c9968. 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/QMDA61501410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4a02ee1e92ec4b983cf6eb00b123918cc015437fb5e752ded6ed431987b311. 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/QMDA61501411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a628b17191e3309336c4a58e084e01b4cc5213fd489a0c331b1eea2d3fc2659. 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/QMDA61501412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6559a2efc7d24e2290c679aede99681dd3fdabbfa68ec9686a0aa455fb4ba90a. 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/QMDA61501413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91627d850f8b57877f958aa9322bbc68f55a52036d294a1899e23a8437cae5fe. 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/QMDA61501414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed4b86547556f04eb8207495b82c1dd4eba2032b6999a331993ff01ffd369c6. 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/QMDA61501415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9f566bb11188b110c1c64531d1108e806154b4f3adf3e6c1f3093178f085fd. 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/QMDA61501416.
Football World Hits 2010 - The Cup Of Soccer Life (South Africa Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f77e8909b3c5c93b8d432efd315309772da1b6613a281ed53482950b1bba757. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEAF70927909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce266518607e21f42a0660da6fd532fb71743856838f61a66a3ea04970a86f5d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QM6N21414913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782f9ed726094127bbfc154e71c9175bbfec4635f2193be5f5d0fcadd93597a2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEC1968578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a852d4fa36fe2756acad3331ce05ee98fb009ff19d0c407f6ccc79f2554ed64. 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/US6R21448795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62d9e51bb3d41de592e32698a83c016721e3efde00b2f6a96c695986566e7b4. 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/QM6P41468572.