Jiří Jirmal
type: MusicGroup
description: thumb|Jiří Jirmal (2010) Jiří Jirmal (24 April 1925 – 11 December 2019) was a classical guitarist who was also dedicated to jazz. He was born as Jiří Novák in Prague. Some of his compositions incorpo
popularity: 3
followers: 210
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc41897bed4230587ea26411d7158e079d54aed4cf9057794ecb0246ee47fe4be
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c2b5051b-3ec3-481e-b97a-305a1aea87b2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c2b5051b-3ec3-481e-b97a-305a1aea87b2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c2b5051b-3ec3-481e-b97a-305a1aea87b2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc41897bed4230587ea26411d7158e079d54aed4cf9057794ecb0246ee47fe4be","name":"Jiří Jirmal","registered_at":"2026-06-20T19:59:14Z","symbol":"NIM1697801","token_address":"0x3e412b03765c8372493a53a6c671ec70c460975b","type":"artist","uuid":"c2b5051b-3ec3-481e-b97a-305a1aea87b2"}
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 0xc41897bed4230587ea26411d7158e079d54aed4cf9057794ecb0246ee47fe4be. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2b5051b-3ec3-481e-b97a-305a1aea87b2.json and https://artists.proofprofile.net/proofs/artist/c2b5051b-3ec3-481e-b97a-305a1aea87b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xc41897bed4230587ea26411d7158e079d54aed4cf9057794ecb0246ee47fe4be","name":"Jiří Jirmal","registered_at":"2026-06-20T19:59:14Z","symbol":"NIM1697801","token_address":"0x3e412b03765c8372493a53a6c671ec70c460975b","type":"artist","uuid":"c2b5051b-3ec3-481e-b97a-305a1aea87b2"}
album: Romantic Guitar
  type: MusicAlbum
  date published: 2000-07-15
album: Růže z Texasu
  type: MusicAlbum
  date published: 2007-08-31
album: Music from Spain & Renaissance Guitar
  type: MusicAlbum
  date published: 2015-05-29