Dorothy Howell may refer to: Dorothy Howell (composer) (1898–1982), English composer and pianist Dorothy Howell (screenwriter) (1899–1971), American screenwriter Dorothy Howell Rodham (1919–2011),
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 0xfe8d0ab37881fe2206ef0d80d4ef10e7ed43cfc6b31a3d38e916c2528ac0172c. Chain 2 (Bitcoin): anchored in block 954039 (2026-06-17T03:00:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dd4e216-4f97-4d3b-9a9b-481a383f58e2.json and https://artists.proofprofile.net/proofs/artist/3dd4e216-4f97-4d3b-9a9b-481a383f58e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Matthay Miscellany: Rare and Unissued Recordings by Tobias Matthay and His Pupils
Beach, Chaminade & Howell: Piano Concertos (Hyperion Romantic Piano Concerto 70)