Tomas Dratva
type: MusicGroup
genre: chamber music
genre: classical piano
popularity: 3
followers: 61
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0939771beb298914c07e357dcaa8f7c0dcb9ac025c7a1c4ecb4c65652b151a4f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a516ec46-09e5-48d8-8c0e-cd52edff903d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a516ec46-09e5-48d8-8c0e-cd52edff903d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a516ec46-09e5-48d8-8c0e-cd52edff903d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0939771beb298914c07e357dcaa8f7c0dcb9ac025c7a1c4ecb4c65652b151a4f","name":"Tomas Dratva","registered_at":"2026-06-20T07:11:13Z","symbol":"NIM1550067","token_address":"0xb783750092f763d2dd28df7c0534bb7913c6fbbf","type":"artist","uuid":"a516ec46-09e5-48d8-8c0e-cd52edff903d"}
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 0x0939771beb298914c07e357dcaa8f7c0dcb9ac025c7a1c4ecb4c65652b151a4f. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a516ec46-09e5-48d8-8c0e-cd52edff903d.json and https://artists.proofprofile.net/proofs/artist/a516ec46-09e5-48d8-8c0e-cd52edff903d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x0939771beb298914c07e357dcaa8f7c0dcb9ac025c7a1c4ecb4c65652b151a4f","name":"Tomas Dratva","registered_at":"2026-06-20T07:11:13Z","symbol":"NIM1550067","token_address":"0xb783750092f763d2dd28df7c0534bb7913c6fbbf","type":"artist","uuid":"a516ec46-09e5-48d8-8c0e-cd52edff903d"}
album: Trio Animæ: Complete Studio Recordings, Vol. 3
  type: MusicAlbum
  date published: 2021-05-25
album: Trio Animæ: Complete Studio Recordings, Vol. 9
  type: MusicAlbum
  date published: 2021-05-25
album: Trio Animæ: Complete Studio Recordings, Vol. 4
  type: MusicAlbum
  date published: 2021-05-25
album: Trio Animæ: Complete Studio Recordings, Vol. 6
  type: MusicAlbum
  date published: 2021-05-25
album: Trio Animæ: Complete Studio Recordings, Vol. 1
  type: MusicAlbum
  date published: 2021-05-25
album: Trio Animæ: Complete Studio Recordings, Vol. 2
  type: MusicAlbum
  date published: 2021-05-25
album: Trio Animæ: Complete Studio Recordings, Vol. 7
  type: MusicAlbum
  date published: 2021-05-25