Professor Ratbaggy is a sometime four-piece band based in Melbourne, Australia. Sometimes thought of as a side-project of iconic Australian singer-songwriter Paul Kelly, the band is in fact its own en
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43510c06944d18022002b6abf95bee6ef1f59eb2a10fa4d0748df7288c9cae7b. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ee33f8a-6d6c-4fb1-a6a0-a71741aa926a.json and https://artists.proofprofile.net/proofs/artist/0ee33f8a-6d6c-4fb1-a6a0-a71741aa926a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).