Ernst Wallfisch
type: MusicGroup
genre: chamber music
description: Ernst Wallfisch (27 May 1920 in Frankfurt am Main – 8 May 1979 in Northampton, Massachusetts) was a prominent viola soloist, recording artist and pedagogue, primarily remembered along with his wife, p
popularity: 2
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc72ffea0cc8c3504b3bd73efc0194ad64b2e2ff9649da8e2401d0f72f57d766b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66d128f9-0980-4cf5-861d-eddddb4f71c1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66d128f9-0980-4cf5-861d-eddddb4f71c1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/66d128f9-0980-4cf5-861d-eddddb4f71c1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72ffea0cc8c3504b3bd73efc0194ad64b2e2ff9649da8e2401d0f72f57d766b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66d128f9-0980-4cf5-861d-eddddb4f71c1.json and https://artists.proofprofile.net/proofs/artist/66d128f9-0980-4cf5-861d-eddddb4f71c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Telemann: Suit für Flöte und Viola
  type: MusicAlbum
  date published: 2021-01-29
album: Classical Masterpieces - Georg Friedrich Telemann: Ouverture-Suite for Viola da Gamba & Table Music Suite No. 1
  type: MusicAlbum
  date published: 2022-07-07