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 0x6c6e4c7da7734e18b623089b5f29d67d304a36836a693c3c09f8d7589198a9a9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90c018c1-8fa2-45d7-9c26-a2a11172d107.json and https://artists.proofprofile.net/proofs/artist/90c018c1-8fa2-45d7-9c26-a2a11172d107.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
白马寒鸦(《有匪》广播剧第二季主题曲)
白马寒鸦（PRIEST原著《有匪》广播剧第二季主题曲）
我在故事里读到你(公子优原著广播剧《拾朝》主题曲)