{"copyright_id":"0x3dc081beec5d341df17117c0338f2005e69eec174c7653e195adffa2abdfd668","name":"Rosario Bourdon Orchestra","registered_at":"2026-06-14T11:19:16Z","symbol":"NIM0436517","token_address":"0x5edc1fb15f5e0ccffa68d0ec7e65c1630ffc8bd0","type":"artist","uuid":"419ead2f-bf1d-4827-a357-c49d4c96a4bb"}
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 0x3dc081beec5d341df17117c0338f2005e69eec174c7653e195adffa2abdfd668. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/419ead2f-bf1d-4827-a357-c49d4c96a4bb.json and https://artists.proofprofile.net/proofs/artist/419ead2f-bf1d-4827-a357-c49d4c96a4bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hits Of The 1920S, Vol. 1 (1920): Whispering
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 0x116584ac71f3008cb9443706a2bbb9333a911cd4577a7928dbf48ff432bffeed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKI190216105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab967461fed24777aadeb9245bce6c42afdc87aa0abcdbd69d3e56f4820b44e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HKI190216118.