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 0xd7f37c614c473b254dc90ca69637087f1c3537dc56b611ff42301381a9779716. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5959981f-7652-4c07-9e28-614391a1eff9.json and https://artists.proofprofile.net/proofs/artist/5959981f-7652-4c07-9e28-614391a1eff9.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 0x1f7690ae82a272dc514c95135c88868f6244e8f48abb8687d69d636d9e592f66. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/AEA3A2067560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe50b43a0d7993843e9e53128104e894c9d23073b3fe8794c6a199ecfcc375d4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AEA3A2033524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f4634ed12e51c66ff82ff8b809d928b2baf62c8fd9551a3eabaa788c710eae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AEA3A2097064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eb948955c86e443a4fed1c65c6e441d2c11bf30b060f106fde676337d97bec. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:36:53Z), 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/AEA3A2004176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65f8b94ad75144eb444ba3cf5f374c23867e1a08ea81c93b8068a2c4c7bfaa0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:31Z), 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/AEA3A2050390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f0e1cca8b227b7c67b93e44ec4d16d494e67f9b3784b23601cb9f6fb9d5bd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:39Z), 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/AEA3A2078632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6341f566b8938864696fd9128bf81d0d33b5efe37c281cb38b55c055d8dfa43. 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/AEA3A2025882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecf64108a6e0a9071caeccf60786ae2606a3c4bed728d36f33803fd98ac0046. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AEA3A2092423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc3f6ede58afda1f30c0b6cd1feeb6002cf084fbe29c86b09453f77ce70728. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:59:07Z), 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/AEA3A2042647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10c913f0f66e5391717cae953c2b03c8fde871c87476874c2fc980c63305565. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:43Z), 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/AEA3A2024234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8464bfada5fc8f697dceec4862264b6a165d6fa1cb9cb0090d83ed5565f8491. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:48Z), 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/AEA3A2070862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41483204c2a40cb30c338ba6ca5fb805810667ac1b7380795930c107c68ce130. 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/AEA3A2034089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb2ce835aeaac2915c5fb0e85671795a9c6960d4e873aa4b752197145efd3e5. 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/AEA3A2078721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02445ba8efc051390240ff95cf10b97fe1a8a4e3c7c6c5ac48a89b47b7fd96f5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AEA3A2033881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe17b36869eec18da5b25bae977650444bfe8af71a07b728b27bc2160d2d0f19. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:33:53Z), 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/AEA3A2090456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d0a19c86b5e45e9f3643bbd29198e89706f126962bf93ac9147dec37e16c62. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/AEA3A2060484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41673dccfaec01dff069172e948fcdc58e4ba6e7f0caf877d89a8ef52ddb0a8a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AEA3A2041243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22794ed98c3940c8222e15aaada879b4c6374dd4d07e4aadd9c5791f962112. 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/AEA3A2087956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4001376d9f395f8c0c3d27315f33d86d84bb52e89e87cd820aecfe9384f7323e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/AEA3A2085122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf7a8d23354e48a31b6ca897cedcb8c5cba88b7a4786f9f42b07052bdfedf7c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/AEA3A2099687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b854d3b7e51bd582eeb6bc053b1b3f9f4a61766099e60bc6046642603fad663. 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/AEA3A2027685.