{"copyright_id":"0xdb56ee78fcdb21ef88b9ff87f7ed7cfa6f91f8a7d7c5c439afbbda004cf73195","name":"Tania Barbará","registered_at":"2026-06-21T09:17:57Z","symbol":"NIM1886336","token_address":"0xbfeae864cde1c890b991abdbcdfce9c6d3861517","type":"artist","uuid":"e8284728-4ba1-419b-9cff-eca8dd1f842e"}
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 0xdb56ee78fcdb21ef88b9ff87f7ed7cfa6f91f8a7d7c5c439afbbda004cf73195. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8284728-4ba1-419b-9cff-eca8dd1f842e.json and https://artists.proofprofile.net/proofs/artist/e8284728-4ba1-419b-9cff-eca8dd1f842e.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 0xbdc0c892c07345e58e5f97524a3f6ebcbb7aff1206a4a692d4858a334f2a0773. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:14:11Z), 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/QZNJV2073393.