Iain Burnside is a Scottish classical pianist and accompanist, and an occasional presenter on BBC Radio 3. Following study at Merton College, Oxford, the Royal Academy of Music and the Chopin Academy
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 0x5a0bcc5f8963958ea0994c7072f5a1558e86c9d51ab4ca65f4476848adde9a12. 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/84b846d7-8639-475e-b3ec-4d291374e9e5.json and https://artists.proofprofile.net/proofs/artist/84b846d7-8639-475e-b3ec-4d291374e9e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Jade Mountain – Songs by Edmund Rubbra
Rubbra: The Jade Mountain, Op. 116: I. A Night Thought on Terrace Tower
Rubbra: Two Sonnets by William Alabaster, Op. 87: I. Upon the Crucifix
Rubbra: Orpheus with his lute, Op. 8 No. 2