thumb|Christopher Hobbs Christopher Hobbs (born 9 September 1950) is an English experimental composer, best known as a pioneer of British systems music. Life and career Hobbs was born in Hillingdon,
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 0xa804b869cb72bb04984369f3f7a2953a72b6bef0c6c3e17efcc230219dd81824. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b57a7c6c-b3ce-4347-985f-073f43a97eca.json and https://artists.proofprofile.net/proofs/artist/b57a7c6c-b3ce-4347-985f-073f43a97eca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).