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 0x2b2f3504005752d1f4be97d20ff718516524265abae4fe69a5954838895fa24d. 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/6ee95525-95b8-484c-b967-3ebc4617ddea.json and https://artists.proofprofile.net/proofs/artist/6ee95525-95b8-484c-b967-3ebc4617ddea.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 0x24cc2e7bd5e945e15a9beb303ed7065b7762843a36fabba92ce7cb8d6d6e18e1. 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/TCACR1660017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc06d21f6a1ced4da075faf3d879d48f5bae4af7388e308bb095bc01af016a82. 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/TCACR1660020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c722c444d1c498bb27d15ed026eadb60416d91c2df15ac3f8f8c4764e050fb1. 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/TCACR1660023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586d14aa28ab87653086184cb630d93cef2cd79a7ff7e89a0ea44b075ea4bb01. 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/TCACR1660036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19e8e02e3ff96ad5017e8621d23ba5ac90e66e7a9560dce5b4f8773011d0593. 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/TCACR1660025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb146ffd3c67ad4da98abd7cf76db28893c22f109e6d2db282966638bc42d7c2c. 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/TCACR1660033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5488e765cbd256c689880d7057386496a70458024e24774cc345d4d0876fbc5d. 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/TCACR1660019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b641f0e07d42dd1687086bd972a5542f97fff5ed4f4e958f6fd1a36d87d29e5. 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/TCACR1660021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb0928baa0409517ecac0824a1097957171b957fead32d81a9bd7950f8a464e. 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/TCACR1660027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f2df1ea9a810b27f36909311f673edef2382b467fabba365720ecfa54b53f6. 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/TCACR1660026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f0f8e6152575af9d43f6ab3e902dfccafb33d210187b0b565720f1262c1e75. 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/TCACR1660030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2204708f048a473ba05e11f2f7902b80c1551148abdae37667dc746c3688b42c. 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/TCACR1660028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6518a7f806ab459cedd1896b5e18751cb524bc7b088baeb850c4b4f05718b2e1. 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/TCADB1729617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebd23c0dabf4b5c83b610959a7a3008619c132884b772d03b3d6bf4abc3b38c. 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/TCACW1759116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a658b51fbd705f41f3611ecc66e404b4212d6d4e2a7485ed9c84770ecce07d. 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/TCACU1686296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea2540b5f8624305872d21d1ff74f9b55c0b56ddff2c9c50686552845e53165. 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/TCACT1679444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87d0d7edcf36a1f3cba335b4bc62fa3216c22365d2097f90d61dead6c1612b0. 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/QZ4781670004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf196e9789200f8c96f5331e85767c723cfa950919b2d07383217123a4d584272. 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/USCG61600097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f6e5af4a629a3b4595304e3c2fb4676196390b2b4ee862263ad9fb9381110. 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/QMVVT1650061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf900b3ca243f4bd58959a91344a4597e23a6440e765a76da5b5c0afeebbdda67. 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/QMVVT1650062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ce6a8c26f47c701fbac159038e984ad29567912390511c46083774950e6110. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QMVVT1650063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f63297457fa6291bdbdbab394e917897bab79fdc16edd3b3c68e6fb8277546. 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/QMVVT1650064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe400482f04e76c7790f3ac67bd4e525f270bc2d9b7d755edd0fd38295711527. 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/QMVVT1650065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6cfdedb2b88b75a6e29f19422642a1ef9077a86d518e5443c82a3bcc41a5d5. 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/QMVVT1650066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5747518901be195ddc8eeda72c365ba6330a1a7a680f70232a5f31757f7c0895. 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/PEBQ91607234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8c387f92149db77c241e305b110c7c3695c8a4510c81d0bd4a0a2e66131b44. 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/TCACR1635046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c76c34c146345bdff1af67b0b382c5f4b5c83cd0ec3c7293e8b89ef9c6e3b33. 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/TCADI1794853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0664e5b3e7eb35184fa0e6a565bd84a4cfdb734b4edd71bf23cd91999ac1b4c6. 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/TCADI1794856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c8fb653311eaa4d5d42909f7a70c1d81ea836c2c6a8b3ade2bc5aed8e76bc3. 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/TCADI1794857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f7575a89592330f328288625371bf8675f5dc406d4d6d356225e22f228dbf2. 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/TCADI1794859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93ca892a74b35f958d341fb2521ec7506edd9eccb356e992b87da2035d903dd. 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/TCADI1794861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc2dda67138897673625251fd12205415d1b5fdee0605f5218b59e62f12a990. 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/TCADI1794865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839aa3cd1243c96a9970b0ac3301fff9a0833e838cf876f0d4c9dec7db1ec739. 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/TCADI1794868.