Piano Duet
type: MusicGroup
genre: c-pop
description: thumb|right|The Latsos Piano Duo in Teatro Metropolitano According to the Grove Dictionary of Music and Musicians, there are two kinds of piano duet: "[pieces of music] for two players at one instrum
popularity: 19
followers: 202
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xe6c98b76af34396130d2fc81fd798461963d3926b8215858b328aa27410876b2
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/fc6a5bf2-1a0a-4fe0-800e-6cb69ef3820a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc6a5bf2-1a0a-4fe0-800e-6cb69ef3820a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fc6a5bf2-1a0a-4fe0-800e-6cb69ef3820a
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe6c98b76af34396130d2fc81fd798461963d3926b8215858b328aa27410876b2","name":"Piano Duet","registered_at":"2026-06-15T07:02:56Z","symbol":"NIM0718978","token_address":"0x46d5283a3441fda379b266f066e32c04c93738a8","type":"artist","uuid":"fc6a5bf2-1a0a-4fe0-800e-6cb69ef3820a"}
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 0xe6c98b76af34396130d2fc81fd798461963d3926b8215858b328aa27410876b2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc6a5bf2-1a0a-4fe0-800e-6cb69ef3820a.json and https://artists.proofprofile.net/proofs/artist/fc6a5bf2-1a0a-4fe0-800e-6cb69ef3820a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
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album: Piano for Dreaming
  type: MusicAlbum
  date published: 2024-03-04
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  type: MusicAlbum
  date published: 2024-04-15
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  type: MusicAlbum
  date published: 2024-08-26