Kaffeehaus Klub
type: MusicGroup
genre: cool jazz
genre: jazz house
popularity: 9
followers: 50
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf913dac363367eb24a5a3ed05ffdb7178d4d3c586141174ec62d0cde3a4fc2e1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954008
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954008
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32aa9a9f-ec6b-4d71-b7b9-38dcaee64e8e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32aa9a9f-ec6b-4d71-b7b9-38dcaee64e8e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/32aa9a9f-ec6b-4d71-b7b9-38dcaee64e8e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:31:27Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf913dac363367eb24a5a3ed05ffdb7178d4d3c586141174ec62d0cde3a4fc2e1","name":"Kaffeehaus Klub","registered_at":"2026-06-16T07:31:50Z","symbol":"NIM0981291","token_address":"0xb65ae6c6838be6443fe927bcf0410e57862f2d9e","type":"artist","uuid":"32aa9a9f-ec6b-4d71-b7b9-38dcaee64e8e"}
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 0xf913dac363367eb24a5a3ed05ffdb7178d4d3c586141174ec62d0cde3a4fc2e1. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32aa9a9f-ec6b-4d71-b7b9-38dcaee64e8e.json and https://artists.proofprofile.net/proofs/artist/32aa9a9f-ec6b-4d71-b7b9-38dcaee64e8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xf913dac363367eb24a5a3ed05ffdb7178d4d3c586141174ec62d0cde3a4fc2e1","name":"Kaffeehaus Klub","registered_at":"2026-06-16T07:31:50Z","symbol":"NIM0981291","token_address":"0xb65ae6c6838be6443fe927bcf0410e57862f2d9e","type":"artist","uuid":"32aa9a9f-ec6b-4d71-b7b9-38dcaee64e8e"}
album: Musik für Espresso-Bars
  type: MusicAlbum
  date published: 2023-08-23
  track: Beautiful Sunrise Bgm
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159988
    explicit: false
    by artist: Kaffeehaus Klub
    in album: Musik für Espresso-Bars
      type: MusicAlbum
      date published: 2023-08-23
    genre: cool jazz
    genre: jazz house
    isrc code: GX4R52387976
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T23:34:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc70795c3cc622d06792b2a85485e2b8e8df8a8ca8f06af9dd774cdab153b6c7b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX4R52387976
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0xc70795c3cc622d06792b2a85485e2b8e8df8a8ca8f06af9dd774cdab153b6c7b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX4R52387976.
      date published: 2026-07-04T11:19:20Z
    audio: Beautiful Sunrise Bgm
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.93
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.896
      additional property: Energy
        type: PropertyValue
        value: 0.196
      additional property: Speechiness
        type: PropertyValue
        value: 0.054
      additional property: Acousticness
        type: PropertyValue
        value: 0.885
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.907
      additional property: Liveness
        type: PropertyValue
        value: 0.113
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.655
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.822
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Kaffee und Musik
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159988
    explicit: false
    by artist: Kaffeehaus Klub
    in album: Musik für Espresso-Bars
      type: MusicAlbum
      date published: 2023-08-23
    genre: cool jazz
    genre: jazz house
    isrc code: GX4R52375211
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T22:27:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7a751c5935f89195525cf47bb4295d9cccedb327146ac88093b84d57dfb45283
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958074
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958074
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX4R52375211
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T22:45:25Z
    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 0x7a751c5935f89195525cf47bb4295d9cccedb327146ac88093b84d57dfb45283. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX4R52375211.
      date published: 2026-07-14T22:45:25Z
    audio: Kaffee und Musik
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.95
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.863
      additional property: Energy
        type: PropertyValue
        value: 0.202
      additional property: Speechiness
        type: PropertyValue
        value: 0.056
      additional property: Acousticness
        type: PropertyValue
        value: 0.859
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.881
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Espresso-Bars

Valence (Positivity)
type: PropertyValue
value: 0.544

Loudness (dB)
type: PropertyValue
value: -23.776

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

Espresso-Bars
type: MusicAlbum
date published: 2025-04-04