Mark Brown
type: MusicGroup
genre: choral
genre: gregorian chant
genre: medieval
popularity: 16
followers: 69
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb45e7d1d5d4c271e6c61fd9c61e285be6a0eca08998bc8efbbfe4ae47087a7b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa5d2236-be87-4d4f-94a6-38f159c33bc9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa5d2236-be87-4d4f-94a6-38f159c33bc9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fa5d2236-be87-4d4f-94a6-38f159c33bc9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb45e7d1d5d4c271e6c61fd9c61e285be6a0eca08998bc8efbbfe4ae47087a7b8","name":"Mark Brown","registered_at":"2026-06-15T06:48:03Z","symbol":"NIM0715428","token_address":"0xc332089ddfbd30ece52129680e56bc193eda8a9a","type":"artist","uuid":"fa5d2236-be87-4d4f-94a6-38f159c33bc9"}
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 0xb45e7d1d5d4c271e6c61fd9c61e285be6a0eca08998bc8efbbfe4ae47087a7b8. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa5d2236-be87-4d4f-94a6-38f159c33bc9.json and https://artists.proofprofile.net/proofs/artist/fa5d2236-be87-4d4f-94a6-38f159c33bc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0xb45e7d1d5d4c271e6c61fd9c61e285be6a0eca08998bc8efbbfe4ae47087a7b8","name":"Mark Brown","registered_at":"2026-06-15T06:48:03Z","symbol":"NIM0715428","token_address":"0xc332089ddfbd30ece52129680e56bc193eda8a9a","type":"artist","uuid":"fa5d2236-be87-4d4f-94a6-38f159c33bc9"}
album: Palestrina: Missa Papae Marcelli, Stabat Mater, Missa L'homme Armé, Etc
  type: MusicAlbum
  date published: 2009-10-13
  track: Missa Papae Marcelli
    type: MusicRecording
    duration: PT8M54S
    duration ms: 534506
    explicit: false
    by artist: Giovanni Pierluigi da Palestrina
    by artist: Pro Cantione Antiqua
    by artist: Bruno Turner
    in album: Palestrina: Missa Papae Marcelli, Stabat Mater, Missa L'homme Armé, Etc
      type: MusicAlbum
      date published: 2009-10-13
    popularity: 5
    genre: classical
    genre: choral
    genre: gregorian-chant
    genre: medieval
    isrc code: USX760906103
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T23:21:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdc2d36f1a15903fc6ff77e914371c67348aae9cf04b428bd17fcd5ae5965f1b3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957124
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957124
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX760906103
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:53:27Z
    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 0xdc2d36f1a15903fc6ff77e914371c67348aae9cf04b428bd17fcd5ae5965f1b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX760906103.
      date published: 2026-07-08T03:53:27Z
    audio: Missa Papae Marcelli
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.747
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.108
      additional property: Energy
        type: PropertyValue
        value: 0.164
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.992
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.135
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.053
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.656
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major