Gertraud Hopf
type: MusicGroup
genre: opera
popularity: 2
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x323cb2cc9a8ed588cf7c5d03bc521c40426bffe84e112b8a853ab5dc6481684d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3895c8e4-4eef-447b-a96e-12a457312f55.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3895c8e4-4eef-447b-a96e-12a457312f55.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3895c8e4-4eef-447b-a96e-12a457312f55
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x323cb2cc9a8ed588cf7c5d03bc521c40426bffe84e112b8a853ab5dc6481684d","name":"Gertraud Hopf","registered_at":"2026-06-16T09:15:12Z","symbol":"NIM1005966","token_address":"0x0f8e70f64b06f7cff1d5bfb2ccbdfcfd0dada532","type":"artist","uuid":"3895c8e4-4eef-447b-a96e-12a457312f55"}
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 0x323cb2cc9a8ed588cf7c5d03bc521c40426bffe84e112b8a853ab5dc6481684d. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3895c8e4-4eef-447b-a96e-12a457312f55.json and https://artists.proofprofile.net/proofs/artist/3895c8e4-4eef-447b-a96e-12a457312f55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T00:32:47Z
  text: {"copyright_id":"0x323cb2cc9a8ed588cf7c5d03bc521c40426bffe84e112b8a853ab5dc6481684d","name":"Gertraud Hopf","registered_at":"2026-06-16T09:15:12Z","symbol":"NIM1005966","token_address":"0x0f8e70f64b06f7cff1d5bfb2ccbdfcfd0dada532","type":"artist","uuid":"3895c8e4-4eef-447b-a96e-12a457312f55"}
track: Die Walküre / Act 3: "Hojotoho! Heiaha!" - Live In Bayreuth / 1967
  type: MusicRecording
  duration: PT8M21S
  duration ms: 501906
  explicit: false
  by artist: Richard Wagner
  by artist: Elisabeth Schärtel
  by artist: Sieglinde Wagner
  by artist: Liane Synek
  by artist: Annelies Burmeister
  by artist: Soňa Červená
  by artist: Danica Mastilovic
  by artist: Helga Dernesch
  by artist: Gertraud Hopf
  by artist: Bayreuth Festival Orchestra
  by artist: Karl Böhm
  in album: Wagner: Die Walküre
    type: MusicAlbum
    date published: 1973-01-01
  genre: classical
  genre: opera
  isrc code: NLA506700093
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T03:25:23+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0c658796b70c3435715cedf0bc11343671e59fbe60432c941bcb26b5ebc3627c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960207
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960207
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700093
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T04:47:22Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x0c658796b70c3435715cedf0bc11343671e59fbe60432c941bcb26b5ebc3627c. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700093.
    date published: 2026-07-30T04:47:22Z
  audio: Die Walküre / Act 3: "Hojotoho! Heiaha!" - Live In Bayreuth / 1967
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 110.252
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.268
    additional property: Energy
      type: PropertyValue
      value: 0.347
    additional property: Speechiness
      type: PropertyValue
      value: 0.057
    additional property: Acousticness
      type: PropertyValue
      value: 0.956
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.651
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.144
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.496
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major