Helmut Hafner
type: MusicGroup
popularity: 5
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb3b553f87dabcd9efdb72216bf7957a199fca1df5ec4e555dc349b9a00215574
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/65e38aac-5d72-4dc5-b915-d152d83c9c5c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/65e38aac-5d72-4dc5-b915-d152d83c9c5c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/65e38aac-5d72-4dc5-b915-d152d83c9c5c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb3b553f87dabcd9efdb72216bf7957a199fca1df5ec4e555dc349b9a00215574","name":"Helmut Hafner","registered_at":"2026-06-17T01:05:00Z","symbol":"NIM1232561","token_address":"0x42ecbde915899195628831a196aa06e9b29b373f","type":"artist","uuid":"65e38aac-5d72-4dc5-b915-d152d83c9c5c"}
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 0xb3b553f87dabcd9efdb72216bf7957a199fca1df5ec4e555dc349b9a00215574. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65e38aac-5d72-4dc5-b915-d152d83c9c5c.json and https://artists.proofprofile.net/proofs/artist/65e38aac-5d72-4dc5-b915-d152d83c9c5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb3b553f87dabcd9efdb72216bf7957a199fca1df5ec4e555dc349b9a00215574","name":"Helmut Hafner","registered_at":"2026-06-17T01:05:00Z","symbol":"NIM1232561","token_address":"0x42ecbde915899195628831a196aa06e9b29b373f","type":"artist","uuid":"65e38aac-5d72-4dc5-b915-d152d83c9c5c"}
album: Die etruskische Vase (Ungekürzt)
  type: MusicAlbum
  date published: 2020-08-04
album: Carmen (Ungekürzt)
  type: MusicAlbum
  date published: 2020-08-04
album: Die Venus von Ille (Ungekürzt)
  type: MusicAlbum
  date published: 2020-08-04
album: Mächtiger als das Schicksal (Ungekürzt)
  type: MusicAlbum
  date published: 2020-09-01
album: Der Unbesiegbare (Utopischer Roman) [Ungekürzt]
  type: MusicAlbum
  date published: 2020-10-01
album: Erstens kommt es anders [Booksnacks Short Stories, Folge 3 (Ungekürzt)]
  type: MusicAlbum
  date published: 2021-03-08