Casso may refer to: People Anthony Casso (1942–2020), American mobster Edward Casso (born 1974), American politician Places Casso, Pordenone, Italy Fort Casso or Ouvrage Rohrbach, France See al
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc491d494b2c793665d27b4f1ef29bdb73f54d6a0278926fa910c1d1cf0601112. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12feea97-78de-46ab-907e-0dd4df1caf4d.json and https://artists.proofprofile.net/proofs/artist/12feea97-78de-46ab-907e-0dd4df1caf4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).