{"copyright_id":"0x7dfceaaca1b7e3491ae4b154b52babc56a993f2d7c59fc0a68c6a930bb078436","name":"Matthew Frederick Harris","registered_at":"2026-06-20T20:46:16Z","symbol":"NIM1709459","token_address":"0xaf150c585dad680b9fbbd5e1b4c14c2a3036820a","type":"artist","uuid":"c3fb89dc-3aed-403c-a7be-6ba3ee63380b"}
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 0x7dfceaaca1b7e3491ae4b154b52babc56a993f2d7c59fc0a68c6a930bb078436. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3fb89dc-3aed-403c-a7be-6ba3ee63380b.json and https://artists.proofprofile.net/proofs/artist/c3fb89dc-3aed-403c-a7be-6ba3ee63380b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Girl From The North Country Original Broadway Cast Recording
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 0x97af1f2d5eb2fd95224800b89e284b168ae1cc3b72eba528076f1955fcf83ddf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USQX92001257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9eb9e3f93aae87302233cc2415834b6864ad41d7efdd2fe3a7dc361c33b3f2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USQX92001267.