Clarissa may refer to: Clarissa (given name), a female given name Clarissa; or, The History of a Young Lady, a novel by Samuel Richardson Clarissa (1941 film), a German film Clarissa (upcoming fi
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 0x30ad86c5abbfb8c20bc95600813cd29bd52348371c6debd5bcf291579bf03de9. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/479c5a7b-2d79-423a-bd3e-8d53d38d59c0.json and https://artists.proofprofile.net/proofs/artist/479c5a7b-2d79-423a-bd3e-8d53d38d59c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).