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 0x3d389322cc7161e6de4ba3740242a28d10c0e235bb4064888159ed962ec3708e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6134aeba-6ca0-400b-91ce-ac2a90b66146.json and https://artists.proofprofile.net/proofs/artist/6134aeba-6ca0-400b-91ce-ac2a90b66146.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 0x21aed0ca7d1f4506bf0fb4cd4c901364e6a4a695e72fdefae19348c4ac8ad4ae. 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/US2S71047001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b48a371060cdb54570ea5c901c18bdec7ac649d03b85d8176a2ef40794e99c. 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/US2S71047002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48ae07ea59eefb1cbe2c1286ed30b35c693982c7ec43af63cdea126175a50df. 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/US2S71047003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b127d3fdbdd672cd327cebffb4f2349a0710120eb901076934762376cc209d6. 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/US2S71047004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8f0a9dc87e52e9268a7059b37fe33b41779395b2206b4458b14c30b27020f3. 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/US2S71047005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd591a81d51eb8b55d6dbb441b6625cba96bc4631a3d6db5bf03e3c13bcd0f323. 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/US2S71047008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcada7aebfa273efa075b98bf64a9204f8960847cec662127534c6744a703708e. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/US2S71047009.
Breakin' Through feat. El Michels Affair
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21343779d674e40ac1ac393736f9b28846d10886193bcc0f28c2d99947be165f. 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/US2S71047010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1c2f4ce31c1853861a9c6a761a17c3c607b1881a6d89ed9669c13a178e6023. 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/US2S71047011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed0c88497d8b5365d20dae5cbc5143ce57d8f45d900e37e9706cd359bd2cbe. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US2S71047012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077ea0acdce7a68888e6811cc95b09d0a81e661db66f02b74ab223847ec3dba0. 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/US2S71047013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1899a0356596b2bc0128c70bc5eee91207afd5e15a1aada9e0a5fcfff912bd5e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2S70939001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13361136c6bebca037f522d5696a9fd89e7a102f68b86fa052c5005d4f27c28c. 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/US2S70939002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7763cb73dfb9abc41e2b6bd085e22e5d2fbc93237a5b60a65d365d992d44f1. 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/US2S70939003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f59b87d0b71ab1d4365f4c14a730918a394c3b6e00324306a07aed6f3dc939d. 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/US2S70939004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1abab15a870965b704d5e0a8678c281fdbce8567fd668f0aa62774fd864e35c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2S70939005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5c0c7f3bce20d26d20444ba9c6733e47e5e074785bef314b980670a828b722. 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/US2S70939006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd024114e7ad35af16d5fe96ea32871dd84ab090598358e0f64885205ac9859e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US2S70939008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe844af0bfd480b92993ff5fd5ca706daba45ad6f8439d4c8be500721b8eca8. 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/US2S70939009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4835b20bae3cb9626ec150e2c664960a354235a760442ef0fc0ef2bdbfd33d. 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/US2S70939011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c2f8e8f600f073460e66c1f0a86c05c82dcd0de68b7b369d0355fd879549e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2S70939012.
Black Man’s Cry: The Influence and Inspiration of Fela Kuti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d727a05f0f6e4b4a1c678759087df1c9d77619ef14e2936b853d15e3e6b29b. 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/US2S71056004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf135d7f0e3ce9c18007fd76f315ecf2788083c8ea4fe9e4013aaee4d113dc7dd. 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/JPE340600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091dfbb5962eadd5ca3957953252d0e07b768b8f12a4d3430b9630ea9a8e855c. 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/USA2P2042183.