{"copyright_id":"0xd38c7eedc4f13bdba2197bb85690f1733b3b7ff43c901be1df09ec1a780d5b01","name":"Nicolas Pellerin et les Grands Hurleurs","registered_at":"2026-06-17T12:26:53Z","symbol":"NIM1395208","token_address":"0x956f4633bef8a7aec9c6aa8a454ab0f6ab1d8af2","type":"artist","uuid":"861a4054-eaa4-48d3-b082-51bc77896a78"}
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 0xd38c7eedc4f13bdba2197bb85690f1733b3b7ff43c901be1df09ec1a780d5b01. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/861a4054-eaa4-48d3-b082-51bc77896a78.json and https://artists.proofprofile.net/proofs/artist/861a4054-eaa4-48d3-b082-51bc77896a78.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 0x30609cfb841cc29fe3493352d2ca5c2ec18edf026bb824cc3adcd3d2e76e5846. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CAF661500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681f3b9761e48b9fa93f8d20536797644d09078d216381982e760dc67f2fd669. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAIQT2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03d62eac81316d1f5f0e5d1cd3a90309591c9931eed75beb6bc0cff7279f2e1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAIQT2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0e4aad00a44d7b6db6a53fcf6cc360585aaf91fb1a1c861e3437994291e28b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAIQT2100005.