Efrem Zimbalist
type: MusicGroup
description: Efrem Zimbalist (April 21 [O.S. April 9], 1889 – February 22, 1985) was a Russian and American concert violinist, composer, conductor and director of the Curtis Institute of Music. Early life Efrem Z
popularity: 4
followers: 216
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3239efd0c897305c7e9f5b3685483e69f123f35cd7fb0e6de93edfc6bce4227a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af5fd2fb-9561-4fbb-99dc-b5e086ebdd05.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af5fd2fb-9561-4fbb-99dc-b5e086ebdd05.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/af5fd2fb-9561-4fbb-99dc-b5e086ebdd05
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3239efd0c897305c7e9f5b3685483e69f123f35cd7fb0e6de93edfc6bce4227a","name":"Efrem Zimbalist","registered_at":"2026-06-20T11:07:08Z","symbol":"NIM1601316","token_address":"0xab74974aeb4e4dbce402d2040dd23a7b99bfc816","type":"artist","uuid":"af5fd2fb-9561-4fbb-99dc-b5e086ebdd05"}
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 0x3239efd0c897305c7e9f5b3685483e69f123f35cd7fb0e6de93edfc6bce4227a. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af5fd2fb-9561-4fbb-99dc-b5e086ebdd05.json and https://artists.proofprofile.net/proofs/artist/af5fd2fb-9561-4fbb-99dc-b5e086ebdd05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:14:15Z
  text: {"copyright_id":"0x3239efd0c897305c7e9f5b3685483e69f123f35cd7fb0e6de93edfc6bce4227a","name":"Efrem Zimbalist","registered_at":"2026-06-20T11:07:08Z","symbol":"NIM1601316","token_address":"0xab74974aeb4e4dbce402d2040dd23a7b99bfc816","type":"artist","uuid":"af5fd2fb-9561-4fbb-99dc-b5e086ebdd05"}
album: The Auer Legacy: Efrem Zimbalist
  type: MusicAlbum
  date published: 2022-09-16
album: The Auer Legacy: Efrem Zimbalist
  type: MusicAlbum
  date published: 2022-09-16