{"copyright_id":"0x12d560eebfd73d6036cf9c2ecd28940f4ed1c14d1083fffcbd23fdafdf9848d3","name":"Thanos Giouletzis","registered_at":"2026-06-21T04:44:25Z","symbol":"NIM1823188","token_address":"0xe19c7e64fa1b0e85daacc1d0b8c952d1cb149efd","type":"artist","uuid":"dbda3fac-4ecc-45d5-8a6e-c00d73b669f9"}
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 0x12d560eebfd73d6036cf9c2ecd28940f4ed1c14d1083fffcbd23fdafdf9848d3. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbda3fac-4ecc-45d5-8a6e-c00d73b669f9.json and https://artists.proofprofile.net/proofs/artist/dbda3fac-4ecc-45d5-8a6e-c00d73b669f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x59c8541fdff19194bc1319aaa6ec95b0aa820639ff649cdf083314dda6c1c72b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA560649671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cea8002cb5716f2073c7ff8784f3868a68e2472aebb42aa953daeb6525aa3b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLS241000222.