Francis may refer to: People and characters Pope Francis (1936–2025), head of the Catholic Church from 2013 to 2025 Francis (given name), including a list of people and fictional characters Francis (
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 0x7dfaa36278406f5a3d11892ca1f0adb43739076b3216dce473259c77183657e5. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49b0b626-7ddc-4dd5-8e15-8e4ee9e762ef.json and https://artists.proofprofile.net/proofs/artist/49b0b626-7ddc-4dd5-8e15-8e4ee9e762ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pozzoli: Studi Facili (Basic Piano Lessons, etude de piano faciles)
Duvernoy: Scuola primaria, Op. 176 (Basic piano lessons, etude de piano faciles)
Duvernoy: Scuola del meccanismo, Op. 120 (Basic Piano Lessons, Etude de Piano Faciles)
Guardando Lassie in Tv/Tulilem Blem Blue