Bobby Irwin (23 March 1953 – 8 May 2015) was an English drummer, record producer and songwriter. He is known for working in close collaboration with Nick Lowe as co-songwriter and drummer and as a mem
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 0xf17631601bfb3049abc1a7d4b84e999664f474b099a25f43a0c776ca08594fa5. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6d8f4ff-d66f-42fd-a753-1578b45d21f5.json and https://artists.proofprofile.net/proofs/artist/f6d8f4ff-d66f-42fd-a753-1578b45d21f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).