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 0xb8c1638d9b130dba26550c879bf419a9432f7ecbf4d3f9c5e79dba03e7d4fc7e. 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/b3b67797-e4d2-49d0-a7f8-2f4ee47c3668.json and https://artists.proofprofile.net/proofs/artist/b3b67797-e4d2-49d0-a7f8-2f4ee47c3668.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
德布西 阿拉貝斯克第一號 長笛 鋼琴