Siro may refer to: Siro (name) Syrus of Genoa, saint Syrus of Pavia, saint Siro (harvestman), a genus of harvestmen in the family Sironidae See also Siros, Pyrénées-Atlantiques Syros Saint Syru
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ab6e32b25d92fbfa8ce74e712dc4edc9bf82e503aa4845eddbb3e387e0293. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc95243e-21e6-420c-95fb-4608553ab7d0.json and https://artists.proofprofile.net/proofs/artist/dc95243e-21e6-420c-95fb-4608553ab7d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).