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 0x8fe04d6072bce3a02b4e86cb9b13c5fc5106421d7de2c49a38d54a88102accb9. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cd9de0a-1978-4bec-9cf7-4b8b57ac3137.json and https://artists.proofprofile.net/proofs/artist/3cd9de0a-1978-4bec-9cf7-4b8b57ac3137.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
听风 (电影《二哥来了怎么办》角色主题曲)