Horst Laubenthal
type: MusicGroup
genre: choral
genre: opera
genre: requiem
description: Horst Laubenthal (born 8 March 1939), real name Horst Neumaier, is a German operatic tenor and academic voice teacher. He is known internationally, both as an opera singer especially in Mozart roles s
popularity: 13
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8709459a5f00895f000c9f9575dff10ea477e4532dff856ae42afd638744b030
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27fcd8a0-9fe7-48e6-8f5f-b92f4b597111.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27fcd8a0-9fe7-48e6-8f5f-b92f4b597111.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27fcd8a0-9fe7-48e6-8f5f-b92f4b597111
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8709459a5f00895f000c9f9575dff10ea477e4532dff856ae42afd638744b030","name":"Horst Laubenthal","registered_at":"2026-06-14T08:39:24Z","symbol":"NIM0398385","token_address":"0xac929255de117ce54f1f1f5742a7bd0146e09cfb","type":"artist","uuid":"27fcd8a0-9fe7-48e6-8f5f-b92f4b597111"}
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 0x8709459a5f00895f000c9f9575dff10ea477e4532dff856ae42afd638744b030. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27fcd8a0-9fe7-48e6-8f5f-b92f4b597111.json and https://artists.proofprofile.net/proofs/artist/27fcd8a0-9fe7-48e6-8f5f-b92f4b597111.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
  text: {"copyright_id":"0x8709459a5f00895f000c9f9575dff10ea477e4532dff856ae42afd638744b030","name":"Horst Laubenthal","registered_at":"2026-06-14T08:39:24Z","symbol":"NIM0398385","token_address":"0xac929255de117ce54f1f1f5742a7bd0146e09cfb","type":"artist","uuid":"27fcd8a0-9fe7-48e6-8f5f-b92f4b597111"}
album: Mendelssohn: Symphonies Nos.1 & 2 etc.
  type: MusicAlbum
  date published: 1999-01-01