Marc Polo
type: MusicGroup
popularity: 36
followers: 520
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2ac217282710c34ee299d6866e9514c3af0becd4930aaa1d55fa9718dc7c18e
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/4edb9fa4-d60a-48c3-a68c-acbe48961d20.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4edb9fa4-d60a-48c3-a68c-acbe48961d20.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4edb9fa4-d60a-48c3-a68c-acbe48961d20
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa2ac217282710c34ee299d6866e9514c3af0becd4930aaa1d55fa9718dc7c18e","name":"Marc Polo","registered_at":"2026-06-11T19:37:22Z","symbol":"NIM0102430","token_address":"0x03f665cd257a891437c0951b93e20d609aea5b29","type":"artist","uuid":"4edb9fa4-d60a-48c3-a68c-acbe48961d20"}
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 0xa2ac217282710c34ee299d6866e9514c3af0becd4930aaa1d55fa9718dc7c18e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4edb9fa4-d60a-48c3-a68c-acbe48961d20.json and https://artists.proofprofile.net/proofs/artist/4edb9fa4-d60a-48c3-a68c-acbe48961d20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xa2ac217282710c34ee299d6866e9514c3af0becd4930aaa1d55fa9718dc7c18e","name":"Marc Polo","registered_at":"2026-06-11T19:37:22Z","symbol":"NIM0102430","token_address":"0x03f665cd257a891437c0951b93e20d609aea5b29","type":"artist","uuid":"4edb9fa4-d60a-48c3-a68c-acbe48961d20"}
album: POLE STAR
  type: MusicAlbum
  date published: 2016-02-03
album: Stardust
  type: MusicAlbum
  date published: 2016-08-24
album: ENERGY
  type: MusicAlbum
  date published: 2016-10-12
album: TYSON
  type: MusicAlbum
  date published: 2017-02-07
album: PLAY TIME
  type: MusicAlbum
  date published: 2017-03-10
album: THE ROCK
  type: MusicAlbum
  date published: 2018-04-17
album: Run It
  type: MusicAlbum
  date published: 2018-10-11
album: HIGH TECH
  type: MusicAlbum
  date published: 2024-12-26