Michal Hromek
type: MusicGroup
genre: celtic
popularity: 7
followers: 490
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd57c427ecb6d1f1c6c72f60e940f4e8b09b3e5b2aeec69ee548f986efd49d32
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953982
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953982
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ca2a292-b045-496b-89da-8b47860ca61b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ca2a292-b045-496b-89da-8b47860ca61b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2ca2a292-b045-496b-89da-8b47860ca61b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T17:42:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcd57c427ecb6d1f1c6c72f60e940f4e8b09b3e5b2aeec69ee548f986efd49d32","name":"Michal Hromek","registered_at":"2026-06-16T05:09:56Z","symbol":"NIM0947395","token_address":"0x6da86c1bb18ced5371b03530942b9992cd3ab024","type":"artist","uuid":"2ca2a292-b045-496b-89da-8b47860ca61b"}
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 0xcd57c427ecb6d1f1c6c72f60e940f4e8b09b3e5b2aeec69ee548f986efd49d32. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ca2a292-b045-496b-89da-8b47860ca61b.json and https://artists.proofprofile.net/proofs/artist/2ca2a292-b045-496b-89da-8b47860ca61b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T18:08:34Z
  text: {"copyright_id":"0xcd57c427ecb6d1f1c6c72f60e940f4e8b09b3e5b2aeec69ee548f986efd49d32","name":"Michal Hromek","registered_at":"2026-06-16T05:09:56Z","symbol":"NIM0947395","token_address":"0x6da86c1bb18ced5371b03530942b9992cd3ab024","type":"artist","uuid":"2ca2a292-b045-496b-89da-8b47860ca61b"}
album: Celtic Guitar
  type: MusicAlbum
  date published: 1990-01-01
album: Beyond The Lion and Unicorn
  type: MusicAlbum
  date published: 1992-01-01
album: Folk Baroque
  type: MusicAlbum
  date published: 1994-01-01
album: Folk Baroque
  type: MusicAlbum
  date published: 1994-01-01
album: The Wild Mountain Thyme (Keltská Suita)
  type: MusicAlbum
  date published: 1996-01-01
album: Keltská suita
  type: MusicAlbum
  date published: 1996-01-01
album: The Best of Celtic Guitar
  type: MusicAlbum
  date published: 2007-06-15
album: The Best Of Celtic Guitar
  type: MusicAlbum
  date published: 2007-06-15