Marcus Eni
type: MusicGroup
popularity: 24
followers: 4168
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdeda1a22ab3b44cfc4a29d227bf9d39ca0c840a973655993f72a426023b7bf7c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ab16318-132e-45d2-adab-b3758a7690cc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ab16318-132e-45d2-adab-b3758a7690cc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5ab16318-132e-45d2-adab-b3758a7690cc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdeda1a22ab3b44cfc4a29d227bf9d39ca0c840a973655993f72a426023b7bf7c","name":"Marcus Eni","registered_at":"2026-06-11T21:32:32Z","symbol":"NIM0118110","token_address":"0xca1aadda2794ee03c9e7fb984c99fb07efa60e93","type":"artist","uuid":"5ab16318-132e-45d2-adab-b3758a7690cc"}
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 0xdeda1a22ab3b44cfc4a29d227bf9d39ca0c840a973655993f72a426023b7bf7c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ab16318-132e-45d2-adab-b3758a7690cc.json and https://artists.proofprofile.net/proofs/artist/5ab16318-132e-45d2-adab-b3758a7690cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xdeda1a22ab3b44cfc4a29d227bf9d39ca0c840a973655993f72a426023b7bf7c","name":"Marcus Eni","registered_at":"2026-06-11T21:32:32Z","symbol":"NIM0118110","token_address":"0xca1aadda2794ee03c9e7fb984c99fb07efa60e93","type":"artist","uuid":"5ab16318-132e-45d2-adab-b3758a7690cc"}
album: Império
  type: MusicAlbum
  date published: 2018-06-01
album: Dicanto
  type: MusicAlbum
  date published: 2018-07-20
album: Quatro Patas de Amor
  type: MusicAlbum
  date published: 2022-09-18
album: Cirandinha
  type: MusicAlbum
  date published: 2023-02-12
  track: Cirandinha
    type: MusicRecording
    duration: PT2M5S
    duration ms: 125524
    explicit: false
    by artist: Marcus Eni
    in album: Cirandinha
      type: MusicAlbum
      date published: 2023-02-12
    isrc code: BCM2V2300001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:01:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0895ab881afb3b02fb9e6acff4aaf11e76c74dd1dd74035958a7b1d311655ab2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCM2V2300001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x0895ab881afb3b02fb9e6acff4aaf11e76c74dd1dd74035958a7b1d311655ab2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BCM2V2300001.
      date published: 2026-07-04T11:19:20Z
    audio: Cirandinha
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 86.473
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.627
      additional property: Energy
        type: PropertyValue
        value: 0.38
      additional property: Speechiness
        type: PropertyValue
        value: 0.194
      additional property: Acousticness
        type: PropertyValue
        value: 0.614
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.207
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.639
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.435
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Pedrada Djavan
  type: MusicAlbum
  date published: 2024-11-27