{"copyright_id":"0xa4b8a4e5f3cda56f1caa9fee2bfe4cc976b5e813ea847301e534fcd85e0f27d7","name":"Nilüfer Avcı Gündoğdu","registered_at":"2026-06-20T22:55:13Z","symbol":"NIM1739446","token_address":"0xaada8afbc38f17f6f2e168071fcef80771708cd3","type":"artist","uuid":"cad2c5db-e9b2-4919-9b8a-5fc0e3362ab2"}
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 0xa4b8a4e5f3cda56f1caa9fee2bfe4cc976b5e813ea847301e534fcd85e0f27d7. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cad2c5db-e9b2-4919-9b8a-5fc0e3362ab2.json and https://artists.proofprofile.net/proofs/artist/cad2c5db-e9b2-4919-9b8a-5fc0e3362ab2.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 0xb5721183d823d2187b99357758cd1fa6903cefda560d17e6013b24dcf3776657. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:38:10Z), 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/TR5570900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d14f1263ea8ff20ba3745b89f9aaebfb5c8234322553c1df0782328ec051cd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TR5570900056.