Emily Anderson (17 March 1891 – 26 October 1962) was an Irish scholar of German ancestry, music historian and cryptanalyst at the British Government Code and Cipher School (now GCHQ) for almost 30 yea
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 0x28672d7ee2533089574824512b96e626589077ca5f5a8a5132683219f7aba599. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e57c982-5e9f-49a2-a83a-89bd01f39c05.json and https://artists.proofprofile.net/proofs/artist/7e57c982-5e9f-49a2-a83a-89bd01f39c05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).