Mark Brown
type: MusicGroup
popularity: 14
followers: 313
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d1281ddbf2718e1262dd46e88f75f54a565c7c78ccbd4b7458c101a4d23d347
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953614
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953614
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/17a6a72a-37f0-41a2-b954-a83357b49862.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/17a6a72a-37f0-41a2-b954-a83357b49862.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/17a6a72a-37f0-41a2-b954-a83357b49862
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T08:40:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1d1281ddbf2718e1262dd46e88f75f54a565c7c78ccbd4b7458c101a4d23d347","name":"Mark Brown","registered_at":"2026-06-14T06:57:08Z","symbol":"NIM0373985","token_address":"0x7e3ec3840b8aebbc7348cfd2d188150a444a0731","type":"artist","uuid":"17a6a72a-37f0-41a2-b954-a83357b49862"}
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 0x1d1281ddbf2718e1262dd46e88f75f54a565c7c78ccbd4b7458c101a4d23d347. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17a6a72a-37f0-41a2-b954-a83357b49862.json and https://artists.proofprofile.net/proofs/artist/17a6a72a-37f0-41a2-b954-a83357b49862.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T08:40:32Z
  text: {"copyright_id":"0x1d1281ddbf2718e1262dd46e88f75f54a565c7c78ccbd4b7458c101a4d23d347","name":"Mark Brown","registered_at":"2026-06-14T06:57:08Z","symbol":"NIM0373985","token_address":"0x7e3ec3840b8aebbc7348cfd2d188150a444a0731","type":"artist","uuid":"17a6a72a-37f0-41a2-b954-a83357b49862"}
album: Last Set
  type: MusicAlbum
  date published: 2023-05-11
album: Last Set
  type: MusicAlbum
  date published: 2023-05-19
album: Billboard On Sunset
  type: MusicAlbum
  date published: 2023-10-23
album: Billboard On Sunset (Radio Edit)
  type: MusicAlbum
  date published: 2023-10-23
album: 1 of a Kind
  type: MusicAlbum
  date published: 2023-12-12
album: Lovely at the Top
  type: MusicAlbum
  date published: 2024-04-08
album: Left Home For Mars
  type: MusicAlbum
  date published: 2024-04-22
album: Sapiosexual
  type: MusicAlbum
  date published: 2024-07-29
  track: Sapiosexual
    type: MusicRecording
    duration: PT3M22S
    duration ms: 202187
    explicit: true
    by artist: Mark Brown
    in album: Sapiosexual
      type: MusicAlbum
      date published: 2024-07-29
    isrc code: QZTAX2497551
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T12:05:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5d44e29176995f21e785d4310fe7feb42eeae2f86b7403e7d56e59d72c6d80ed
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957703
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957703
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2497551
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T12:26:40Z
    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 0x5d44e29176995f21e785d4310fe7feb42eeae2f86b7403e7d56e59d72c6d80ed. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/QZTAX2497551.
      date published: 2026-07-12T12:26:40Z
    audio: Sapiosexual
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.873
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.761
      additional property: Energy
        type: PropertyValue
        value: 0.684
      additional property: Speechiness
        type: PropertyValue
        value: 0.239
      additional property: Acousticness
        type: PropertyValue
        value: 0.131
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.271
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.483
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.57
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Chunk It
  type: MusicAlbum
  date published: 2024-10-11
album: Fantastic (Chopped and Screwed)
  type: MusicAlbum
  date published: 2025-07-03
album: Fantastic
  type: MusicAlbum
  date published: 2025-07-03
album: Love In Another Life
  type: MusicAlbum
  date published: 2025-08-29