Irra can refer to: IRRA, The Institute of Russian Realist Art Lugal-Irra, a Sumerian, Babylonian, and Akkadian god IRRA, an acronym in economics, finance, and decision theory for increasing relative r
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 0x24e1ab1fc6b15e5fb4cc3ca55f2b7f30e9771b910782544db9512af914569b1d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45445b6a-c3f5-42ee-a334-da54e9e41821.json and https://artists.proofprofile.net/proofs/artist/45445b6a-c3f5-42ee-a334-da54e9e41821.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).