1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xae44ac7c8d1031baf9e2b1e93778ab83428a36a35840032581516d5577df290b. 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/a5201026-bd52-4eb3-907e-0eb8dec1a8bc.json and https://artists.proofprofile.net/proofs/artist/a5201026-bd52-4eb3-907e-0eb8dec1a8bc.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 → block OTSBitcoinBlock must exist at that height 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 0x08442fd895632fe22851f2f89fc70467b5bb54231ca40ef167b7a3e9af6932e4. 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/BRQH21200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d7560cb55680bd6967edf99d8d1ee907d25f3fabb998365483761f2854dfc0. 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/BRQH21200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eb805d44d38855b722329afc34bde6fb25dd43108655c6a7fce61a7c804bc3. 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/BRQH22000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659b5e995bff6d2b7fc973dadfa510a4030f83fb5f4714ec06d4b0d05a2f1d88. 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/BRQH22000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe931199960b97df96c98f4a26edfbd28d3469a61b2a01e088e8cb057db3651fe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/BRQH22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4e8df80ac719a800b0e8c040bb19338adfa94b0026e34a0daf07b6733adcd3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BRQH22100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3085a57455c71bf83079247561afbee050d4256406b2b301d3c01d6ed8ead479. 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/BRQH22200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da8e63e6d4a35c1cbc8d71b3a0a641e1d938ad35e1c378ea3a4b0b665fccad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRQH22200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d91d493887d750aa62b6b9203acc9b4f3d2f17e617a3db32cbcf37ca0c0609. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/BRQH22200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2569d6c0a1e799d0d36f74e1a4727cf3703c7806097c22e2e74d1c316a228bcd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRQH22400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7d51a1190d8975ae618c7f60c0494da3a7fb75424034fe7a6218f65c3be0b0. 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/BRQH22400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949e078118fe3022da721510208c26c94969865b043b789b96bab613ecce838a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BRQH22400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b82f77eb1b9659fd5d9a3d1e902d045e8718aa10b4d1ad231682a34ffee11. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRQH22400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b398ddeea313ceacfaaefe0651687cbd103c311b74f976b1d78d10621bf243. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:21Z), 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/BRQH22400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb98cd8d67e53eed256572329fbc4e4190a9ee9d658e0055b3af911366c2b16. 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/BCABN2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab33a2e0d23d953d0495809936ead5ec1f67496e33b105f7a9720c447173c8e4. 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/BRYRC2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb98cd8d67e53eed256572329fbc4e4190a9ee9d658e0055b3af911366c2b16. 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/BCABN2200002.