Hartmut Kamper
type: MusicGroup
popularity: 10
followers: 467
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x939e52d6c8125c42588ff3f554aad95826d1ad295ae6f77574c3d8c97e18af34
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/580a2bce-cb41-491d-bb81-dcab88743a6b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/580a2bce-cb41-491d-bb81-dcab88743a6b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/580a2bce-cb41-491d-bb81-dcab88743a6b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x939e52d6c8125c42588ff3f554aad95826d1ad295ae6f77574c3d8c97e18af34","name":"Hartmut Kamper","registered_at":"2026-06-16T20:25:24Z","symbol":"NIM1165871","token_address":"0xadbacdc85194d2a246ddb4690c189c3df79e6283","type":"artist","uuid":"580a2bce-cb41-491d-bb81-dcab88743a6b"}
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 0x939e52d6c8125c42588ff3f554aad95826d1ad295ae6f77574c3d8c97e18af34. 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/580a2bce-cb41-491d-bb81-dcab88743a6b.json and https://artists.proofprofile.net/proofs/artist/580a2bce-cb41-491d-bb81-dcab88743a6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x939e52d6c8125c42588ff3f554aad95826d1ad295ae6f77574c3d8c97e18af34","name":"Hartmut Kamper","registered_at":"2026-06-16T20:25:24Z","symbol":"NIM1165871","token_address":"0xadbacdc85194d2a246ddb4690c189c3df79e6283","type":"artist","uuid":"580a2bce-cb41-491d-bb81-dcab88743a6b"}
album: Sax Dreams
  type: MusicAlbum
  date published: 2008-11-07
album: Feeling
  type: MusicAlbum
  date published: 2011-12-10
  track: Eine Reise ins Glück - Saxophon
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159600
    explicit: false
    by artist: Hartmut Kamper
    in album: Feeling
      type: MusicAlbum
      date published: 2011-12-10
    isrc code: ATP691100067
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T15:53:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x81f176704373139305afa8d0dc01a0495169ed6d60874bcf5f442c15e6f93ea6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956728
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP691100067
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f176704373139305afa8d0dc01a0495169ed6d60874bcf5f442c15e6f93ea6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATP691100067.
      date published: 2026-07-05T01:43:49Z
    audio: Eine Reise ins Glück - Saxophon
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 151.404
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.387
      additional property: Energy
        type: PropertyValue
        value: 0.661
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.021
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.201
      additional property: Liveness
        type: PropertyValue
        value: 0.276
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.702
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.537
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major