Matti may refer to: Matti (given name), people with the given name Matti (surname), people with the surname Matti, Karnataka, a village in India Matti: Hell Is for Heroes, a 2006 film about Matti
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 0xb011a1de8c470dd61d4eb4e20aaaf73949468b4ed849fcbe3ab16c8daf47b017. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fca35f72-76f8-40cf-a66a-32be1d77578d.json and https://artists.proofprofile.net/proofs/artist/fca35f72-76f8-40cf-a66a-32be1d77578d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).