Stark Quartet
type: MusicGroup
popularity: 3
followers: 30
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x273e12c5adc3a8995422440ed7a1079f67a95d93ec5d6bb8e21a5e4a81d47a1c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953846
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953846
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00dbce2b-bfc8-4375-99c8-2ea9797de291.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00dbce2b-bfc8-4375-99c8-2ea9797de291.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/00dbce2b-bfc8-4375-99c8-2ea9797de291
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:48:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x273e12c5adc3a8995422440ed7a1079f67a95d93ec5d6bb8e21a5e4a81d47a1c","name":"Stark Quartet","registered_at":"2026-06-15T13:55:51Z","symbol":"NIM0729209","token_address":"0x049e759a8724b46e1119f569b8fefee00e273be3","type":"artist","uuid":"00dbce2b-bfc8-4375-99c8-2ea9797de291"}
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 0x273e12c5adc3a8995422440ed7a1079f67a95d93ec5d6bb8e21a5e4a81d47a1c. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00dbce2b-bfc8-4375-99c8-2ea9797de291.json and https://artists.proofprofile.net/proofs/artist/00dbce2b-bfc8-4375-99c8-2ea9797de291.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:48:34Z
  text: {"copyright_id":"0x273e12c5adc3a8995422440ed7a1079f67a95d93ec5d6bb8e21a5e4a81d47a1c","name":"Stark Quartet","registered_at":"2026-06-15T13:55:51Z","symbol":"NIM0729209","token_address":"0x049e759a8724b46e1119f569b8fefee00e273be3","type":"artist","uuid":"00dbce2b-bfc8-4375-99c8-2ea9797de291"}
album: Prime registrazioni 2004 - 2005
  type: MusicAlbum
  date published: 2015-12-17
album: The Clarinet in the 19th & 20th Centuries from Solo to Quartet
  type: MusicAlbum
  date published: 2016-11-04
album: The Clarinet in the 19th & 20th Centuries from Solo to Quartet
  type: MusicAlbum
  date published: 2016-11-04