John Rankin Rathbone (5 February 1910 – 10 December 1940) was a British Conservative Party politician. Early life He was born in 1910 to William Rathbone, a marine architect, and Agnes Dorothea Ran
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 0x779a2faf9bc78834fca8eb95c3c2d7f2c2a908630227f4b4d97b8424da4ad454. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e83c5cdf-c3da-4813-9cda-24b083390fd8.json and https://artists.proofprofile.net/proofs/artist/e83c5cdf-c3da-4813-9cda-24b083390fd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).