Stefan Wolpe
type: MusicGroup
genre: avant-garde
genre: chamber music
description: thumb|Wolpe in Jerusalem ( 1938) Stefan Wolpe (25 August 1902 in Berlin – 4 April 1972 in New York City) was a German-born American composer. He was associated with interdisciplinary modernism, with
popularity: 9
followers: 869
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd54e0059d4a363d8291702d5cadd0345af3ae48e4af96f267a42c428022f6367
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a28ea69b-2328-4fac-b8fc-e4550dc3b6ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a28ea69b-2328-4fac-b8fc-e4550dc3b6ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a28ea69b-2328-4fac-b8fc-e4550dc3b6ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd54e0059d4a363d8291702d5cadd0345af3ae48e4af96f267a42c428022f6367","name":"Stefan Wolpe","registered_at":"2026-06-20T06:22:43Z","symbol":"NIM1539123","token_address":"0xe2c1d9ff88328868dec4860551d26cb14f27ecf3","type":"artist","uuid":"a28ea69b-2328-4fac-b8fc-e4550dc3b6ed"}
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 0xd54e0059d4a363d8291702d5cadd0345af3ae48e4af96f267a42c428022f6367. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a28ea69b-2328-4fac-b8fc-e4550dc3b6ed.json and https://artists.proofprofile.net/proofs/artist/a28ea69b-2328-4fac-b8fc-e4550dc3b6ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xd54e0059d4a363d8291702d5cadd0345af3ae48e4af96f267a42c428022f6367","name":"Stefan Wolpe","registered_at":"2026-06-20T06:22:43Z","symbol":"NIM1539123","token_address":"0xe2c1d9ff88328868dec4860551d26cb14f27ecf3","type":"artist","uuid":"a28ea69b-2328-4fac-b8fc-e4550dc3b6ed"}
album: Music of Stefan Wolpe, Vol. 1
  type: MusicAlbum
  date published: 2008-01-01