III or iii may refer to: Companies Information International, Inc., a computer technology company Innovative Interfaces, Inc., a library-software company 3i, formerly Investors in Industry, a Brit
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 0x2a046ef5295e1a70139bac2ea3d76080e450ba4ca5bd0e32fbbaef8b1c42d433. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c778e109-c5d6-4626-b4c6-35e682742574.json and https://artists.proofprofile.net/proofs/artist/c778e109-c5d6-4626-b4c6-35e682742574.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).