Marcel Tamminga
type: MusicGroup
popularity: 2
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7007e5b29e15be78f182bf7ef1f53697fc76942e5b8417893b04ee3b3a518095
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9233f193-8e15-4f2d-9cc3-45e204407923.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9233f193-8e15-4f2d-9cc3-45e204407923.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9233f193-8e15-4f2d-9cc3-45e204407923
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7007e5b29e15be78f182bf7ef1f53697fc76942e5b8417893b04ee3b3a518095","name":"Marcel Tamminga","registered_at":"2026-06-17T16:44:11Z","symbol":"NIM1456537","token_address":"0xc949dd5c98a83326031e11491872f648788edd96","type":"artist","uuid":"9233f193-8e15-4f2d-9cc3-45e204407923"}
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 0x7007e5b29e15be78f182bf7ef1f53697fc76942e5b8417893b04ee3b3a518095. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9233f193-8e15-4f2d-9cc3-45e204407923.json and https://artists.proofprofile.net/proofs/artist/9233f193-8e15-4f2d-9cc3-45e204407923.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x7007e5b29e15be78f182bf7ef1f53697fc76942e5b8417893b04ee3b3a518095","name":"Marcel Tamminga","registered_at":"2026-06-17T16:44:11Z","symbol":"NIM1456537","token_address":"0xc949dd5c98a83326031e11491872f648788edd96","type":"artist","uuid":"9233f193-8e15-4f2d-9cc3-45e204407923"}
album: Der Tot
  type: MusicAlbum
  date published: 2021-06-12
album: Hatten nichts
  type: MusicAlbum
  date published: 2023-12-22
album: Irgendwann
  type: MusicAlbum
  date published: 2024-03-01
album: Therapie
  type: MusicAlbum
  date published: 2024-05-17
album: Ende ist nahe
  type: MusicAlbum
  date published: 2024-06-21
album: Wie Oft
  type: MusicAlbum
  date published: 2024-07-12
album: Eine Kugel
  type: MusicAlbum
  date published: 2024-09-12
album: Gedankengalaxy
  type: MusicAlbum
  date published: 2024-11-29
album: Endzeit
  type: MusicAlbum
  date published: 2024-12-16
album: Wieso
  type: MusicAlbum
  date published: 2025-02-22
album: Virtuelles Videogame
  type: MusicAlbum
  date published: 2025-03-22
  track: Virtuelles Videogame
    type: MusicRecording
    duration: PT2M29S
    duration ms: 149966
    explicit: false
    by artist: Marcel Tamminga
    in album: Virtuelles Videogame
      type: MusicAlbum
      date published: 2025-03-22
    isrc code: QZHN92595960
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T13:06:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x31d692dde1b8b3d495c94d7e48a8ae793a97e8d16e4a6b13ab4ff353fc08ea6a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958554
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958554
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92595960
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T13:17:01Z
    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 0x31d692dde1b8b3d495c94d7e48a8ae793a97e8d16e4a6b13ab4ff353fc08ea6a. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZHN92595960.
      date published: 2026-07-18T13:17:01Z
    audio: Virtuelles Videogame
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 88.913
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.599
      additional property: Energy
        type: PropertyValue
        value: 0.799
      additional property: Speechiness
        type: PropertyValue
        value: 0.395
      additional property: Acousticness
        type: PropertyValue
        value: 0.229
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.219
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.695
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.149
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Anders
  type: MusicAlbum
  date published: 2025-05-07
album: Jeden Tag
  type: MusicAlbum
  date published: 2025-05-15
album: Verliebt
  type: MusicAlbum
  date published: 2025-08-16