Francisco Soriano y Guzmán (October 4, 1869 - October 2, 1937) was a Filipino politician. Biography Francisco Soriano was born on October 4, 1869, in Molo, now a district of Iloilo City. He received
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 0xd68c79c9c55b20f07e844353246c0c0621fc40eae19ab2f53d6c6b41f3fc9473. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e452a417-7e45-420c-baff-bc91052af629.json and https://artists.proofprofile.net/proofs/artist/e452a417-7e45-420c-baff-bc91052af629.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).