Eric Parkin (24 March 1924 – 3 February 2020) was an English pianist.Classical Music Daily Parkin was born in Stevenage and attended Alleyne's Grammar School there. He studied at Trinity College of M
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 0xaccfc60e3a57981602f6025b4aa9d8f464162e584ea7b78a2276372d4d50c27b. 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/b4e10ca9-01f2-442a-9720-afb9769c872b.json and https://artists.proofprofile.net/proofs/artist/b4e10ca9-01f2-442a-9720-afb9769c872b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Billy Mayerl Piano Transcriptions, Vol. 1
The Billy Mayerl Piano Transcriptions, Vol. 3
The Billy Mayerl Piano Transcriptions, Vol. 2
Billy Mayerl, The Piano Transcriptions Vol 1
Billy Mayerl - The Piano Transcriptions Vol 2
Billy Mayerl - The Piano Transcriptions Vol 3
Manhatten Playboy - A Tribute to Robert Farnon
William Baines & E. J. Moeran. Piano Music
Piano Music Of William Baines (1899 -1922)
The Golden Age of Light Music: Fiddles and Bows
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xed8727e46e2315957044c670df1eb847b05568b58771392d703f59215929aebf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6631350109.