marco polo
type: MusicGroup
description: Marco Polo ( 8 January 1324) was a Venetian merchant, explorer, and writer who travelled through Asia along the Silk Road between 1271 and 1295.Stephen Feinstein; (2009) Marco Polo: Amazing Adventures
popularity: 8
followers: 77
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f44290cb3c84674eb9bbbb75d3e402abd4e3c4a79825827265841eeed046eb1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91d12104-2081-4977-8f83-d9df73265b1e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91d12104-2081-4977-8f83-d9df73265b1e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/91d12104-2081-4977-8f83-d9df73265b1e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7f44290cb3c84674eb9bbbb75d3e402abd4e3c4a79825827265841eeed046eb1","name":"marco polo","registered_at":"2026-06-17T16:32:01Z","symbol":"NIM1453637","token_address":"0xe2a63bf0bbb6f1f8e717d4dfc81c53676b313152","type":"artist","uuid":"91d12104-2081-4977-8f83-d9df73265b1e"}
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 0x7f44290cb3c84674eb9bbbb75d3e402abd4e3c4a79825827265841eeed046eb1. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91d12104-2081-4977-8f83-d9df73265b1e.json and https://artists.proofprofile.net/proofs/artist/91d12104-2081-4977-8f83-d9df73265b1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x7f44290cb3c84674eb9bbbb75d3e402abd4e3c4a79825827265841eeed046eb1","name":"marco polo","registered_at":"2026-06-17T16:32:01Z","symbol":"NIM1453637","token_address":"0xe2a63bf0bbb6f1f8e717d4dfc81c53676b313152","type":"artist","uuid":"91d12104-2081-4977-8f83-d9df73265b1e"}
album: tantas
  type: MusicAlbum
  date published: 2025-06-13
album: NUEVOS COLORES
  type: MusicAlbum
  date published: 2025-08-08
  track: oro
    type: MusicRecording
    duration: PT2M23S
    duration ms: 143098
    explicit: false
    by artist: marco polo
    in album: NUEVOS COLORES
      type: MusicAlbum
      date published: 2025-08-08
    isrc code: ESA092510978
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T06:03:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7b8ba2c668b81cce7281d8579408edd42fcbc12789bc7dae771116b4659ddfe1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958111
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958111
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA092510978
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T06:58:20Z
    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 0x7b8ba2c668b81cce7281d8579408edd42fcbc12789bc7dae771116b4659ddfe1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ESA092510978.
      date published: 2026-07-15T06:58:20Z
    audio: oro
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.034
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.649
      additional property: Energy
        type: PropertyValue
        value: 0.705
      additional property: Speechiness
        type: PropertyValue
        value: 0.053
      additional property: Acousticness
        type: PropertyValue
        value: 0.371
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.168
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.337
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.387
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: II - La Colmena
  type: MusicAlbum
  date published: 2025-11-06