Jürgen Holtz
type: MusicGroup
description: Jürgen Holtz (10 August 1932 – 21 June 2020) was a German actor on stage and in film, and an artist and author. On stage he played leading roles in East Berlin, including with the Berliner Ensemble,
popularity: 7
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x35d61aeb4ee4452d0121e4a94d0f109bb52f9795aa90beaedf47c02c9d31c610
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953924
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953924
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d78fc37-8fab-4df5-b697-472cd48ff8ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d78fc37-8fab-4df5-b697-472cd48ff8ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1d78fc37-8fab-4df5-b697-472cd48ff8ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:52:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x35d61aeb4ee4452d0121e4a94d0f109bb52f9795aa90beaedf47c02c9d31c610","name":"Jürgen Holtz","registered_at":"2026-06-15T23:41:45Z","symbol":"NIM0869019","token_address":"0x854f817a0ef3cee092df3dc80d30d70bf38b95d1","type":"artist","uuid":"1d78fc37-8fab-4df5-b697-472cd48ff8ee"}
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d61aeb4ee4452d0121e4a94d0f109bb52f9795aa90beaedf47c02c9d31c610. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d78fc37-8fab-4df5-b697-472cd48ff8ee.json and https://artists.proofprofile.net/proofs/artist/1d78fc37-8fab-4df5-b697-472cd48ff8ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:52:28Z
  text: {"copyright_id":"0x35d61aeb4ee4452d0121e4a94d0f109bb52f9795aa90beaedf47c02c9d31c610","name":"Jürgen Holtz","registered_at":"2026-06-15T23:41:45Z","symbol":"NIM0869019","token_address":"0x854f817a0ef3cee092df3dc80d30d70bf38b95d1","type":"artist","uuid":"1d78fc37-8fab-4df5-b697-472cd48ff8ee"}