{"copyright_id":"0x8329fb956426c05aa09e6c17d0cdc766438f0b5cf73bbb4ac08d1512615367d1","name":"Henri René & His Orchestra and Chorus","registered_at":"2026-06-14T12:38:48Z","symbol":"NIM0455474","token_address":"0x5d8cfccd1553a317a41bd5206dc46b5ec45453ba","type":"artist","uuid":"4e3ff3da-5eaf-4ddf-bdfb-ce207c0e74b9"}
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 0x8329fb956426c05aa09e6c17d0cdc766438f0b5cf73bbb4ac08d1512615367d1. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e3ff3da-5eaf-4ddf-bdfb-ce207c0e74b9.json and https://artists.proofprofile.net/proofs/artist/4e3ff3da-5eaf-4ddf-bdfb-ce207c0e74b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nothin' for Christmas (with Henri René & His Orchestra and Chorus)
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 0xfafc9e9165de8a61136f2c472a13e5858d6f3290e8342ee467d34386f7fa7e06. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USRC10402261.