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 0xfab0c35a9e9f77bda4e96a5dd3c32bd7b97167fa49d1406f2694d0d312eb0db1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e902a38-72e3-4d13-9c2d-ac91e6fa06e9.json and https://artists.proofprofile.net/proofs/artist/6e902a38-72e3-4d13-9c2d-ac91e6fa06e9.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 0xfbf97d1bcc65603459a67ebfc480fdaf7cc521bc4cf8d7811f16277298a561be. 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/QMDA71399495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5924616c805a76e46ac79312b3ecfea7dc5d88f1171847b8e80a0a06d9cc51b2. 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/QMDA71399496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c042f159743d2c1ed2fb8c5c792539ee28aeab5af36e1f26257e80c9874283. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA71399498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1e2e019d438390870a9e387b13ed86ee717e847c18543e5119b6bdb2953aa9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMDA71399500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0861cb5206e32c777277e695dabb60c2b5c605b42dbae3a4485329e65af88d68. 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/USA561398777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded35f37ada9f3ae3ae2fcebd9a8315c32595f97a527a5d7dfadb0ac1f4d6b21. 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/USA561398780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cd97b4c781b7ab1465f84885d2e0c29d7cb317942a8c72b1db7759fbd0f1c2. 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/USA561398782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b93ca4eb2f36b01bf74f574d068042f93c2d3c57f43d738c432956c7151f083. 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/USA561398783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2ce80a8f8318d0190fd927369e6a1a60ae5a3e5e710c6f5188a0f920a1f056. 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/USA561398784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073f27f522a1ed5eac1ef37daffb9e342080adc67bb579a7938b19f5e5579114. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA561398786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54de8cceb6a3638fe539b0324b6e380151671b9fc25befabf81ed82172961357. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA561398787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7521e25277cfd5a3a7c670b3b23114e7a35967002f19af76b8928ec6b3a1c7db. 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/USA561398789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7461c28c2bf011b32619dd787eb83b1d1b1c5ae9a971d15908f163c12bf6cb99. 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/USA561398790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5551ba6e28fe67d7e8bc01aa9942dd603359970b2971f6e62c0c0cf3bfb434d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA561398791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaaf095e6ad0ee8902c7c482d3331477c8ca7d16f24c07473d34ee52fbd4e87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA561398793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bf59561e74094e9ffd92f4cb498011a3adc4478bc6f50240f3ebe05fdc7da7. 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/USA561398795.