Matthew Scott "Matt" Giraud (born May 11, 1985) is an American singer-songwriter, musician, and the fifth place finalist of the eighth season of the reality television series American Idol. He was th
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 0x98a780d9c67825f4ffafa284be30cbc80bd35a9d4753d470323726446ac4f128. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ac44b41-453c-42a9-9268-387e4419e36a.json and https://artists.proofprofile.net/proofs/artist/8ac44b41-453c-42a9-9268-387e4419e36a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).