The Marx
type: MusicGroup
popularity: 8
followers: 194
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x00600c8f4f896bba4d1cf1102086f4cae0b006b6d2caaf650aac09b8fffabcc4
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/761349c6-f747-4a46-8d35-cf919bcec8fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/761349c6-f747-4a46-8d35-cf919bcec8fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/761349c6-f747-4a46-8d35-cf919bcec8fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x00600c8f4f896bba4d1cf1102086f4cae0b006b6d2caaf650aac09b8fffabcc4","name":"The Marx","registered_at":"2026-06-17T06:43:39Z","symbol":"NIM1313395","token_address":"0x17512ea8259fa69ff0203bc79c61f1c73a4ab1e3","type":"artist","uuid":"761349c6-f747-4a46-8d35-cf919bcec8fd"}
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 0x00600c8f4f896bba4d1cf1102086f4cae0b006b6d2caaf650aac09b8fffabcc4. 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/761349c6-f747-4a46-8d35-cf919bcec8fd.json and https://artists.proofprofile.net/proofs/artist/761349c6-f747-4a46-8d35-cf919bcec8fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x00600c8f4f896bba4d1cf1102086f4cae0b006b6d2caaf650aac09b8fffabcc4","name":"The Marx","registered_at":"2026-06-17T06:43:39Z","symbol":"NIM1313395","token_address":"0x17512ea8259fa69ff0203bc79c61f1c73a4ab1e3","type":"artist","uuid":"761349c6-f747-4a46-8d35-cf919bcec8fd"}
album: Devil Doesn't Change
  type: MusicAlbum
  date published: 2019-01-31
album: The Void
  type: MusicAlbum
  date published: 2019-01-31
album: D.S.O
  type: MusicAlbum
  date published: 2020-06-26
album: Musk Family Emerald Mine
  type: MusicAlbum
  date published: 2020-08-04
album: The Marx
  type: MusicAlbum
  date published: 2020-12-03
album: Complex Geopolitics
  type: MusicAlbum
  date published: 2023-10-16
album: Dual Income No Kids
  type: MusicAlbum
  date published: 2024-01-29
album: Paranoid King
  type: MusicAlbum
  date published: 2024-04-23
album: Nanny's Homemade Marmalade
  type: MusicAlbum
  date published: 2024-09-24
album: The MARX II
  type: MusicAlbum
  date published: 2024-12-03
  track: Complex Geopolitics
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159525
    explicit: false
    by artist: The Marx
    in album: The MARX II
      type: MusicAlbum
      date published: 2024-12-03
    isrc code: QZTB82356706
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T03:38:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x256098a8cafe18d961fd6eddfc3777c98eef5cccae06b847e2fb58c88ea48064
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB82356706
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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 0x256098a8cafe18d961fd6eddfc3777c98eef5cccae06b847e2fb58c88ea48064. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB82356706.
      date published: 2026-07-18T04:13:26Z
    audio: Complex Geopolitics
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.024
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.648
      additional property: Energy
        type: PropertyValue
        value: 0.702
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.173
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.869
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.89
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: One City
    type: MusicRecording
    duration: PT3M0S
    duration ms: 180841
    explicit: false
    by artist: The Marx
    in album: The MARX II
      type: MusicAlbum
      date published: 2024-12-03
    isrc code: QZZ7L2444108
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T20:47:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x73e8fc7ef819976a5b6a2fef5820a1d35825d06489ad08407c205e6134113866
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958779
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958779
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2444108
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T21:08:39Z
    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 0x73e8fc7ef819976a5b6a2fef5820a1d35825d06489ad08407c205e6134113866. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZZ7L2444108.
      date published: 2026-07-19T21:08:39Z
    audio: One City
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.074
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Protest

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.649

Energy
type: PropertyValue
value: 0.732

Speechiness
type: PropertyValue
value: 0.05

Acousticness
type: PropertyValue
value: 0.002

Instrumentalness
type: PropertyValue
value: 0.101

Liveness
type: PropertyValue
value: 0.106

Valence (Positivity)
type: PropertyValue
value: 0.843

Loudness (dB)
type: PropertyValue
value: -8.62

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Minor

Protest
type: MusicAlbum
date published: 2025-11-04