thumb|220px|upright|First World War-era recruiting poster John Bull is a national personification of England and Britain, especially in political cartoons and similar graphic works. He is usually dep
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 0x90158347dd61add179d9eb42dfd9083c4b975d057100c6b8b02c4fe909a46906. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5abb1532-cfd3-4f17-8909-80ecf1bd184c.json and https://artists.proofprofile.net/proofs/artist/5abb1532-cfd3-4f17-8909-80ecf1bd184c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
John Bull: Selected Keyboard Music (Église Saint-Thomas de Cantobéry, Mont Saint-Aignan, Normandie)
Bull: Complete Works for Keyboard, Volume 1
Bull: My Selfe, MB 38 - My Grief, MB 139 - Dr. Bull's Jewell, FWB CXXXVIII (Digitally Remastered)
Bull: Een kindeken is ons geboren (MB 14/53) [Musical Moments]
God Save The King British National Anthem
John Bull, Organ Works of the Early Period
God Save The King British National Anthem (Synth Version)