Günter Jena
type: MusicGroup
genre: choral
description: Günter Jena (born 1933) is a German choral conductor and musicologist. He was the director of church music at St. Michaelis in Hamburg from 1973 to 1997. He founded the festival Bach-Tage Hamburg, and
popularity: 4
followers: 69
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9c988c1481e023faeb03436b927723e6e3806cf0dc1cd48fe62a94abbdb892a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d4edf387-eae8-4859-baf9-94d8af83574d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d4edf387-eae8-4859-baf9-94d8af83574d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d4edf387-eae8-4859-baf9-94d8af83574d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9c988c1481e023faeb03436b927723e6e3806cf0dc1cd48fe62a94abbdb892a7","name":"Günter Jena","registered_at":"2026-06-21T02:25:19Z","symbol":"NIM1790957","token_address":"0x4c9ad5ff3614289fc0c0a1de90f85ccc535f52db","type":"artist","uuid":"d4edf387-eae8-4859-baf9-94d8af83574d"}
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 0x9c988c1481e023faeb03436b927723e6e3806cf0dc1cd48fe62a94abbdb892a7. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4edf387-eae8-4859-baf9-94d8af83574d.json and https://artists.proofprofile.net/proofs/artist/d4edf387-eae8-4859-baf9-94d8af83574d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x9c988c1481e023faeb03436b927723e6e3806cf0dc1cd48fe62a94abbdb892a7","name":"Günter Jena","registered_at":"2026-06-21T02:25:19Z","symbol":"NIM1790957","token_address":"0x4c9ad5ff3614289fc0c0a1de90f85ccc535f52db","type":"artist","uuid":"d4edf387-eae8-4859-baf9-94d8af83574d"}