CASI or Casi may refer to: Acronyms Canadian Aeronautics and Space Institute Canadian Association of Snowboard Instructors China Aerospace Studies Institute, a research institute of the United Sta
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 0xa184fa6348cb2f5762cab5f937acecc73cda1cfbcc74cc72fef2a289635f46cb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71a138b9-9e35-4317-9927-fb84fecf8904.json and https://artists.proofprofile.net/proofs/artist/71a138b9-9e35-4317-9927-fb84fecf8904.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).