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 0xf21625dc57d1fc3b85a3515e68595dc4905154938134c564b3428f56920350f7. 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/bedb48a8-95bd-44f3-a35b-f0b20b8ecff2.json and https://artists.proofprofile.net/proofs/artist/bedb48a8-95bd-44f3-a35b-f0b20b8ecff2.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 0x02914db536af52b3d029d302ea992daeeb2281eec9691cbc1d3c999475e7f799. 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/BK2NP2400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459a2ad0d1832a71d81459120eed8c3aeab686a4c07724bc4df565800c82eefc. 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/BK2NP2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d5bbb09b31f0dec7e408ae02156f71c5d9e1e6c949064746087c9925471760. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SGB502482743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa711430fc472c5b93c52d195310f2fa81b5dd5ca5c54b87ed313b033247424bc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX3SG2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4981d72a91b0f85780281f52a2b10850186d3e60040ce00d3a647a7f0ea0b2. 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/BX3SG2300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a45638ce328cb648925cbcea99e71ca7a4b29ed3dcde092ef4c80e096d4407. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX3SG2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916e058e76f52ed797784016e6c533f2fca7d625e932932a6595bc31ea8bc7ac. 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/BX3SG2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97ea8f868e3b059a567c161ab9cfaa72b48da91942d3cd316fb53fa71e615ba. 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/BX3SG2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621f0167f9054d38bc0538d33093eb3609b8203a2bb95c0caba49b2ac87d25c. 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/BX3SG2200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccf5bf69b6e64b8bb1578dfb7a95bd93a22812d01023473ada91d4d14d05d2d. 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/BX3SG2200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65179bf9886b4e93c976d8cc877531f23217847bfc369a2ac8dccf357b9e955f. 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/BX3SG2200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5dd1ef1c7c69ce27fbdde9d5c9b3a8cc009f6b5ce2a9a13ba6c81dc62bf78. 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/BX3SG2200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5197cd9be3a021b9532aaf049e49439df18201ca571e85e04db56d626bcb41. 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/BX3SG2200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522a98384e1c912a7a69ec5f689f66e1b419b2180563ef69d9b73b86a2e7a470. 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/BX3SG2200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce4a8ca80e3c167ce2e5f7b90b43af06c89a0af6ca1e878bb2f0a4db5a16956. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX3SG2200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97ea8f868e3b059a567c161ab9cfaa72b48da91942d3cd316fb53fa71e615ba. 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/BX3SG2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c31ecdc2ef872eda87bc153934c3b4874b0c6586429d0045be2849b834f1dc. 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/BX3SG2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d449bc18e26f1c6d35ab71d2c3a9fa21425294f0fe71deb34e02a8286cf1d3. 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/QZMZ92466497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0779e227bc953204d058427ac9d611b2416a0c329ec55fe3812ff4907e5ac4a8. 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/BX3SG2200277.