Eric Stephen Ripper (born 13 September 1951) is an Australian former politician. From 2008 to 2012 he was Leader of the Opposition and leader of the Labor Party in Western Australia. He grew up on a
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 0x45c2ff33abc28e3a8c4412f3975f4172bb616a9db58be8fb76e7623343331f22. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2899d2ae-1f29-4a35-81ff-d1f238a71fb4.json and https://artists.proofprofile.net/proofs/artist/2899d2ae-1f29-4a35-81ff-d1f238a71fb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).