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 0x4056bb6b125c0d3a5524282d8ab0969d8275abc23366b5be8a9e6cb4333e74c5. 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/14c24402-4716-4f7b-8585-2d5bc937c08b.json and https://artists.proofprofile.net/proofs/artist/14c24402-4716-4f7b-8585-2d5bc937c08b.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 0xd37f2b4d4faa207fccf04edccaac96dc7b15d8cc93794a86a0e897ee8f24e25d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFR2129861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1150e086faf6e5b067ed68aa913a1df91b8943d1fd89717cfa5b1000df02dce. 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/FRX872149140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a722ff143d1774029f1c15d08d5b9c4778434239997e953a1c22e81d6cac3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRS182131564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4269bbb1a0327aea0e0085c45cdd41d4676ade2e331255466907bbcb3dc44846. 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/FR2X42203274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eaf5be8baad7ca57cdad39a7e471c704ec8b870d92e51cf682fe75cc999485. 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/FR10S2217167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d34c154d40af350401966d9bc11b0b6c8486ceea4c6ac302f2d48b92a49a439. 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/TCAFT2126786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1150e086faf6e5b067ed68aa913a1df91b8943d1fd89717cfa5b1000df02dce. 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/FRX872149140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27acd16a0d15dc93d0a8bf9b45d68d942f21e8f9edc531e8cab7af8e39936268. 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/FR2X42290115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c819e3f174ba962e0a2fcaf57775620c3f2e575a0af02d1f4947453a28d15d. 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/FR2X42290116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4269bbb1a0327aea0e0085c45cdd41d4676ade2e331255466907bbcb3dc44846. 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/FR2X42203274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64315c25dda30ee2c53238dd571f237858394e29b4a3db9d583650c43d1a71f5. 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/FR2X42290117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37f2b4d4faa207fccf04edccaac96dc7b15d8cc93794a86a0e897ee8f24e25d. 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/TCAFR2129861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a722ff143d1774029f1c15d08d5b9c4778434239997e953a1c22e81d6cac3. 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/FRS182131564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe830bebe2a47f255bd679184db9ee0d8827acc1cf351a22551cac2800d0f9639. 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/FR2X42290118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fdfc9c9cb489611c2379122a0631c8834559310583a169c5e16c1b0709f3be. 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/FR2X42290119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f95ccb1634b2904aea69db790c1dd0b481891b9a9f7cf5d6c9906aa55a11c. 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/FR2X42290121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afc150b4dfe0d908a47199ab83eedbb8d38fd6f14a6d17994dd9f69a1d8d4ca. 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/FR2X42290122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaf32861fa72e468bd8c27e45b31a161e86429600751ddeeed22bb1ea0c5ac6. 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/FR2X42290123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b3af1485a0e5cb2810780400a35e70b31080ffeacd6e79528d3e2eb17615f. 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/FR2X42290124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff29064059b09934da6b46f8ba21c11f7bf9a4cbf9a1b59923b093bd6188500. 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/FR2X42290125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1041ca990da149efeb5f09e04b1a2cceda2828c19f376d3f04d14f15789a07. 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/FR2X42290126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a23dde0be7fdd885583c6cdb14d681ef593ae751a31a093f9c88add7263834. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR96X2284785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96d7b326eb971ce1709f7e8bf7c0b6926be792d7a9114667824be88ad0c40f1. 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/DGA052272729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1501acc0d02d95033d867f9e36a79eb6e4eaa437eeb8e5ae533a38338917033. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR96X2348358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe12c7ea56f6f963c88145e45b0406c5efef16fc36b294280abe2863dd1133e0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:22:37Z), 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/DGA052368389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760a341bb9e6e175110dccd95c97093e93cdb61a2e3d16eedda2a1dd60bf4bc7. 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/DGA052368393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89af4ef8f33a97cfc5234ac01975391b5cbbe20aaba56313e807d134008c1193. 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/FRX452381771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1433f936e074783e32890ec3639183fe94aba65a6495522e8d6d51b9ddff0589. 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/DGA062215864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b64340d170c2a748b3ddba61ec127593f8aa1c592e8bd81f5ab82153c0fa23. 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/DGA0Q2367454.