Roman Valek
type: MusicGroup
genre: choral
genre: requiem
popularity: 13
followers: 49
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2996646f203451d5a6dc9d724ed45b6d48ceef352f65cad1d87e5d1534d8aed3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953746
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953746
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6554b6e-b456-4302-bbd2-1b3e3608031a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6554b6e-b456-4302-bbd2-1b3e3608031a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a6554b6e-b456-4302-bbd2-1b3e3608031a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T05:25:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2996646f203451d5a6dc9d724ed45b6d48ceef352f65cad1d87e5d1534d8aed3","name":"Roman Valek","registered_at":"2026-06-14T21:55:02Z","symbol":"NIM0588141","token_address":"0x7dbd2f3839cf696bafeefcb6c8a44ab90e88d6b5","type":"artist","uuid":"a6554b6e-b456-4302-bbd2-1b3e3608031a"}
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 0x2996646f203451d5a6dc9d724ed45b6d48ceef352f65cad1d87e5d1534d8aed3. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6554b6e-b456-4302-bbd2-1b3e3608031a.json and https://artists.proofprofile.net/proofs/artist/a6554b6e-b456-4302-bbd2-1b3e3608031a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
  text: {"copyright_id":"0x2996646f203451d5a6dc9d724ed45b6d48ceef352f65cad1d87e5d1534d8aed3","name":"Roman Valek","registered_at":"2026-06-14T21:55:02Z","symbol":"NIM0588141","token_address":"0x7dbd2f3839cf696bafeefcb6c8a44ab90e88d6b5","type":"artist","uuid":"a6554b6e-b456-4302-bbd2-1b3e3608031a"}
album: Tůma: Te Deum, Sinfonia ex C, Missa Veni Pater Pauperum
  type: MusicAlbum
  date published: 2022-11-11
album: Brossmann Missa in A (Oratorium breve)
  type: MusicAlbum
  date published: 2021-12-01