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 0x42d6d33e6368f057017dbc4e1218f6e797a3818cb46128f35370c88e0a9aac1e. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec598100-e92e-4a76-bfae-671719e1d631.json and https://artists.proofprofile.net/proofs/artist/ec598100-e92e-4a76-bfae-671719e1d631.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
グレート・アーティスト シリーズ 指揮者
モーツァルト ピアノ協奏曲第22番 第9番「ジュノム」