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 0x3a7ce509d6d4c6ec147f85381363fef1e61fc6ec5449724d9c8d5ed0706b31ae. 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/86667214-d3d3-45e6-a5d2-e50924538d4d.json and https://artists.proofprofile.net/proofs/artist/86667214-d3d3-45e6-a5d2-e50924538d4d.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 0xb63ffe6a1b780ad84c31de4b5b9d0bced016a93dc970e02516dce5fad31780ee. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:21:33Z), 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/FR6V82385115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafacdd17057b5aa2d9253536dc92abad9548d7e0ba4c96cfe1265083bcbe9ea. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:05:10Z), 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/FR6V82385116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839073e03e7ae263ac68d49057aa7b8f95158c9239099d6fb8bf858ac3173809. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR6V82385118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e7c2752e41f419da2b4b6bb29fb6e7838e5599f1e02bd49ccb2a8f18d122da. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6V82422029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856e60bd34c83e795cdabf1cad3d8e8d0386c2bf9df01757ad847a7b26140c0e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6V82422030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901561dbdce15efa3a5e8473b4ae7838c87a1bfec84bf135c12d6b694094a76d. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FR6V82422031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9f09ca857091718ecda31d5df0d9125601c1f0b320ad66472025f1084b688f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR6V82422035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db3fcf8ffd3d61b585a3ae2191ff8624b85b8e64df135cc1aee40be23955061. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V82422036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7630f111064984a5405030019b2cde544e1d92e3979b305a4e5976bb76754b27. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:31Z), 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/FR6V82384358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6dd507793556f40159e762ffa839d32390130684d64007417680e61420336c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:30:24Z), 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/QMDA71363341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea75feac7f9b235f2bff5cdfdee064c6e5855303c8c346ad9df76330bba80c46. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FR6V82424748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cd78a8314ac92a83f7b27df78f7b579bc9dfa14ffc9665fbb6c09e407b411b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR6V82424751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94342e83e38eaab73cb869c145e9fcfdc3f8eb3ddd7f322703f1d6c258ae026. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:04Z), 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/FR6V82424752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05713a268dc9d7dde894555a727bf4962f87d9a58511490f884d3cfd1346eace. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V82424754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f322b97d06d4c2597e024fa2ff1f239e31d65840b2ab736693522e322416f31. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR3GQ1000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75c084c2fb46cec8d672aa94f7c147ca7b4b0250b5bfc4209a2daac5020fc8e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFMF2509545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46753eef832e225023f9db714371b2643e50dfb86c4e2861f887540249a8e5eb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:35:33Z), 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/QMFMF2509546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c1d26bfc9a9b55e31be4b6aae208e44d5063fac3c253b1d067970f7418b096. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:17:37Z), 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/QMFMF2509547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd882f8eacbc3934ff6c67a6d655a9a0b0ea8f53af52de5222532e3bc0b81fb2f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:53:58Z), 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/QMFMF2509548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6033e494bab95cdfe6ef03a406b925d2aca06de100ec21dad39eccd20578011c. 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/QMFMF2509549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869774598121f70035f27c0572f9f61bef736843b740c2c8d6b1519e66378336. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMFMF2509641.