Louis Gruenberg
type: MusicGroup
description: Louis Gruenberg ( ; June 9, 1964) was a Russian-born American pianist and prolific composer, especially of operas. An early champion of Schoenberg and other contemporary composers, he was also a highl
popularity: 2
followers: 82
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x6970cdcdf5d53da8ce14fb4dbb39079d708726e83175135a7b8aff5e670a28fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d77400f0-b5fe-4e73-bd12-154f3c41e1b5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d77400f0-b5fe-4e73-bd12-154f3c41e1b5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d77400f0-b5fe-4e73-bd12-154f3c41e1b5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6970cdcdf5d53da8ce14fb4dbb39079d708726e83175135a7b8aff5e670a28fd","name":"Louis Gruenberg","registered_at":"2026-06-21T03:09:41Z","symbol":"NIM1800809","token_address":"0x3605188e186b7b49e48af546c05fbe0698f45abc","type":"artist","uuid":"d77400f0-b5fe-4e73-bd12-154f3c41e1b5"}
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 0x6970cdcdf5d53da8ce14fb4dbb39079d708726e83175135a7b8aff5e670a28fd. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d77400f0-b5fe-4e73-bd12-154f3c41e1b5.json and https://artists.proofprofile.net/proofs/artist/d77400f0-b5fe-4e73-bd12-154f3c41e1b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
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album: The Music of Louis Gruenberg
  type: MusicAlbum
  date published: 1986-01-01
album: Dohnanyi: Serenade - Gruenberg: Violin Concerto
  type: MusicAlbum
  date published: 2000-01-01
album: Louis Gruenberg: Orchestral Works
  type: MusicAlbum
  date published: 2001-10-01
album: Orchestral Works
  type: MusicAlbum
  date published: 2001-10-01