Quartetto Indaco
type: MusicGroup
genre: chamber music
popularity: 5
followers: 413
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xab5304836e7dd74c06b7473457bf0b0f87f1876aa0d50ff15c90cca1ec1a67eb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/53f21589-29bc-42b6-8389-8e55d8dc3b7a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/53f21589-29bc-42b6-8389-8e55d8dc3b7a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/53f21589-29bc-42b6-8389-8e55d8dc3b7a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xab5304836e7dd74c06b7473457bf0b0f87f1876aa0d50ff15c90cca1ec1a67eb","name":"Quartetto Indaco","registered_at":"2026-06-16T18:54:57Z","symbol":"NIM1144278","token_address":"0x9c4fc04e32891cd46c9a8e9c4a94bcf07768aaa9","type":"artist","uuid":"53f21589-29bc-42b6-8389-8e55d8dc3b7a"}
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 0xab5304836e7dd74c06b7473457bf0b0f87f1876aa0d50ff15c90cca1ec1a67eb. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53f21589-29bc-42b6-8389-8e55d8dc3b7a.json and https://artists.proofprofile.net/proofs/artist/53f21589-29bc-42b6-8389-8e55d8dc3b7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xab5304836e7dd74c06b7473457bf0b0f87f1876aa0d50ff15c90cca1ec1a67eb","name":"Quartetto Indaco","registered_at":"2026-06-16T18:54:57Z","symbol":"NIM1144278","token_address":"0x9c4fc04e32891cd46c9a8e9c4a94bcf07768aaa9","type":"artist","uuid":"53f21589-29bc-42b6-8389-8e55d8dc3b7a"}
album: Northern Lights - Quartetto Indaco
  type: MusicAlbum
  date published: 2020-11-27
album: Dante 21
  type: MusicAlbum
  date published: 2021-04-20
album: Miniature
  type: MusicAlbum
  date published: 2021-12-20
album: Avalon
  type: MusicAlbum
  date published: 2022-06-21
album: F. Schubert, A. Webern, C. Carovani: Quartet No. 15 D887, Five Movements Op. 5, Quartet No. 10
  type: MusicAlbum
  date published: 2024-05-24
album: Live in Kumamoto
  type: MusicAlbum
  date published: 2024-06-30