{"copyright_id":"0x247bbdafbde51bfec747162b9ab72cab95385d6de77dc89c8fa29cceccd490ee","name":"Chris Donner","registered_at":"2026-06-11T11:44:51Z","symbol":"NIM0017886","token_address":"0xf2ee9faa684cdb9fa1ab25768cdc80e672fe3ff5","type":"artist","uuid":"0db1400a-69ca-4caa-bb6e-97652b597a36"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247bbdafbde51bfec747162b9ab72cab95385d6de77dc89c8fa29cceccd490ee. 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/0db1400a-69ca-4caa-bb6e-97652b597a36.json and https://artists.proofprofile.net/proofs/artist/0db1400a-69ca-4caa-bb6e-97652b597a36.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466cb7a1656f138a254c9bf298b3250dc8cfc4187ebf12a2e774d534ab7300ad. 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/SE69N2406083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88192d1ee72229f9c4d6d96596ac02b22881f9acefb6ba2c80eb2223e87586c. 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/SE5W32308941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464a47a69060ea1208c401c5078c35728a3b8decc57af8817797481aa5cfcf72. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SE5W32300357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7dc6c39033c014ad19243b65bdd63855b332542937f3b06160e868eb243396. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5W32200628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef982a4b64c73d83c5f9da69347e9d8bd530a799cdcb228095c386c06386e32. 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/SE5W32100964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8622808e52f62477bcab04559c0789499d4704151cb2976c1696747d3ba907e5. 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/SE5W32070301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f0080e93605b11269c572f380f6441e3fad4ca1ff698545e5038e506864f45. 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/SE5W32070302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476db313a9de40f0752ff4382d8cfc8988d92772389d9a14a34ddf35b4c3b48f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5W32070303.