{"copyright_id":"0xeea6e2e4bd920ecde729ab77caed9503ab62a7d0d1c8ded53ef3ed6a5c9d59e1","name":"The Eric Rogers Chorale and Orchestra","registered_at":"2026-06-11T17:26:10Z","symbol":"NIM0081777","token_address":"0x3d9a2f38462e4a3ec06ca5a18b8335f90097010b","type":"artist","uuid":"3f1f7a69-4bc5-47d2-b84d-e9820d1532a7"}
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 0xeea6e2e4bd920ecde729ab77caed9503ab62a7d0d1c8ded53ef3ed6a5c9d59e1. 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/3f1f7a69-4bc5-47d2-b84d-e9820d1532a7.json and https://artists.proofprofile.net/proofs/artist/3f1f7a69-4bc5-47d2-b84d-e9820d1532a7.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 0x0de587e74825c5c503d73a7bee99af2578c8e72c2233f2b6c460ca30725ca824. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBBBA6370603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdab26c3e4b0517f91b5a74bb06e93ad863a1ffaa0ac68ccd2d1ec77685c31e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBBBA6370608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5389ec4ff7a393165556faea0e5d931ed26a511a58c36c18df6f6ceff54a252. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBBBA6370610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b1365c184e154de7e8c03a7c91bd87e81b8e206087b1195639ce8c5f7101b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GBBBA6370611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362fb69b0434cc00134d4fdefce58df846dc615e0076a6462972675d23c5b3c7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBF076312030.