Prague Guitar Quartet
type: MusicGroup
popularity: 10
followers: 337
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e2b05fbd43f1702a737dbd798bf3c33ea7372bef52f3de236ea61b032e1a265
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64aaffc5-0c41-40fb-8165-2c4949e704d6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64aaffc5-0c41-40fb-8165-2c4949e704d6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/64aaffc5-0c41-40fb-8165-2c4949e704d6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4e2b05fbd43f1702a737dbd798bf3c33ea7372bef52f3de236ea61b032e1a265","name":"Prague Guitar Quartet","registered_at":"2026-06-17T00:42:23Z","symbol":"NIM1227160","token_address":"0x40fc1957ebdd7ef65e0e9f8a4be9c4dfcd16e4ae","type":"artist","uuid":"64aaffc5-0c41-40fb-8165-2c4949e704d6"}
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 0x4e2b05fbd43f1702a737dbd798bf3c33ea7372bef52f3de236ea61b032e1a265. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64aaffc5-0c41-40fb-8165-2c4949e704d6.json and https://artists.proofprofile.net/proofs/artist/64aaffc5-0c41-40fb-8165-2c4949e704d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x4e2b05fbd43f1702a737dbd798bf3c33ea7372bef52f3de236ea61b032e1a265","name":"Prague Guitar Quartet","registered_at":"2026-06-17T00:42:23Z","symbol":"NIM1227160","token_address":"0x40fc1957ebdd7ef65e0e9f8a4be9c4dfcd16e4ae","type":"artist","uuid":"64aaffc5-0c41-40fb-8165-2c4949e704d6"}
album: Villa-Lobos, Gershwin, Torroba, Morel
  type: MusicAlbum
  date published: 1991-01-01
album: Praetorius, Vivaldi, Mysliveček, Ravel, Duarte, Rak
  type: MusicAlbum
  date published: 1991-01-01
album: Corelli, Bach, Telemann, Vivaldi
  type: MusicAlbum
  date published: 1994-01-01
album: Corelli / Bach / Telemann / Vivaldi: Prague Guitar Quartet
  type: MusicAlbum
  date published: 1994-01-01
album: Duarte, Rak: Prague Guitar Quartet
  type: MusicAlbum
  date published: 1995-01-01
album: Ravel, Janáček, Prokofiev, Grieg, Fauré
  type: MusicAlbum
  date published: 2006-01-01
album: Prague Guitar Quartet: Originals for 4
  type: MusicAlbum
  date published: 2017-12-18
album: Nights in the Gardens of Spain
  type: MusicAlbum
  date published: 2018-10-19
album: Nights in the Gardens of Spain
  type: MusicAlbum
  date published: 2018-10-19