Asier Polo
type: MusicGroup
description: Asier Polo is a Spanish cellist. Biography Polo was born in Bilbao, Spain, where he studied at the Conservatory of Music with Professor Elisa Pascu. In 1987–1989, he won first prizes in cello and cha
popularity: 6
followers: 554
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7929854b87ffcdd43fc982a762b2659f7274c7003d8206256057f2c988a418ad
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/80dec517-2d12-4e7d-9ab7-c42664a4d3c4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80dec517-2d12-4e7d-9ab7-c42664a4d3c4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/80dec517-2d12-4e7d-9ab7-c42664a4d3c4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7929854b87ffcdd43fc982a762b2659f7274c7003d8206256057f2c988a418ad","name":"Asier Polo","registered_at":"2026-06-17T10:35:22Z","symbol":"NIM1368615","token_address":"0x672c12793a0b43d38fe4ca408bccc328c4113388","type":"artist","uuid":"80dec517-2d12-4e7d-9ab7-c42664a4d3c4"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7929854b87ffcdd43fc982a762b2659f7274c7003d8206256057f2c988a418ad. 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/80dec517-2d12-4e7d-9ab7-c42664a4d3c4.json and https://artists.proofprofile.net/proofs/artist/80dec517-2d12-4e7d-9ab7-c42664a4d3c4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x7929854b87ffcdd43fc982a762b2659f7274c7003d8206256057f2c988a418ad","name":"Asier Polo","registered_at":"2026-06-17T10:35:22Z","symbol":"NIM1368615","token_address":"0x672c12793a0b43d38fe4ca408bccc328c4113388","type":"artist","uuid":"80dec517-2d12-4e7d-9ab7-c42664a4d3c4"}
album: Rachmaninoff & Franck: Cello Sonatas
  type: MusicAlbum
  date published: 2017-04-07
album: Rachmaninoff & Franck: Cello Sonatas
  type: MusicAlbum
  date published: 2017-04-07
album: Boccherini, Vivaldi & Haydn: Cello Concertos
  type: MusicAlbum
  date published: 2020-06-19
album: Boccherini, Vivaldi & Haydn: Cello Concertos
  type: MusicAlbum
  date published: 2020-06-19