FP may refer to: Arts, media and entertainment Music Fortepiano, an early version of the piano Fortepiano (musical dynamic), an Italian musical term meaning 'loud soft' Flux Pavilion, a British du
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 0x2280b246f01830d2a63867f87370293c4b8574ae8d45a69b025f1f8ceb35e0d3. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3b7a9e0-b24e-436c-8bc3-54f0075373b9.json and https://artists.proofprofile.net/proofs/artist/b3b7a9e0-b24e-436c-8bc3-54f0075373b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).