Max & Kata
type: MusicGroup
popularity: 2
followers: 72
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd61d448c15320ea795546a7b3d6944e726833ce6ee3a093a44d2470cbbd26d31
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0c3aceb-947f-4b1a-99a2-84713771991b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0c3aceb-947f-4b1a-99a2-84713771991b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b0c3aceb-947f-4b1a-99a2-84713771991b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd61d448c15320ea795546a7b3d6944e726833ce6ee3a093a44d2470cbbd26d31","name":"Max & Kata","registered_at":"2026-06-20T11:49:13Z","symbol":"NIM1605983","token_address":"0xb80c1a441cd1275db30f4d976907ce1c50186653","type":"artist","uuid":"b0c3aceb-947f-4b1a-99a2-84713771991b"}
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 0xd61d448c15320ea795546a7b3d6944e726833ce6ee3a093a44d2470cbbd26d31. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0c3aceb-947f-4b1a-99a2-84713771991b.json and https://artists.proofprofile.net/proofs/artist/b0c3aceb-947f-4b1a-99a2-84713771991b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0xd61d448c15320ea795546a7b3d6944e726833ce6ee3a093a44d2470cbbd26d31","name":"Max & Kata","registered_at":"2026-06-20T11:49:13Z","symbol":"NIM1605983","token_address":"0xb80c1a441cd1275db30f4d976907ce1c50186653","type":"artist","uuid":"b0c3aceb-947f-4b1a-99a2-84713771991b"}
album: L'orage / Vihar
  type: MusicAlbum
  date published: 2020-01-21
album: Matelot
  type: MusicAlbum
  date published: 2020-01-21
  track: Matelot
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187443
    explicit: false
    by artist: Max & Kata
    in album: Matelot
      type: MusicAlbum
      date published: 2020-01-21
    isrc code: CH6542011499
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T01:56:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd2e15caf05a9c1fcd5f257ff7f61eb517ad8d4fedb30fe5a87c8c1ba1480593d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542011499
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T08:42:46Z
    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 0xd2e15caf05a9c1fcd5f257ff7f61eb517ad8d4fedb30fe5a87c8c1ba1480593d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:42:46Z), 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/CH6542011499.
      date published: 2026-07-21T08:42:46Z
    audio: Matelot
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 81.892
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.698
      additional property: Energy
        type: PropertyValue
        value: 0.156
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.878
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.427
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.908
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Toi et moi / Te és én
  type: MusicAlbum
  date published: 2020-11-15
album: Holdudvar
  type: MusicAlbum
  date published: 2020-12-15
album: La complainte du gendarme
  type: MusicAlbum
  date published: 2021-10-07
album: Paris n'est plus
  type: MusicAlbum
  date published: 2024-12-03