1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe8f030d52af47e54900f5119fa49ffabe11704b0ae72feca69b0ae4b16848711. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c1318ee-e916-449e-9ca8-4df5d1094e65.json and https://artists.proofprofile.net/proofs/artist/1c1318ee-e916-449e-9ca8-4df5d1094e65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
YuiNijiki Melody of Deep Darkness (Cover Best Black)