Alfréd Holeček
type: MusicGroup
genre: chamber music
popularity: 6
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x885678e9851ab23b2154a34345a1d72f1ac76d94a84d495b6d07510d92f05fde
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/923385ec-5b60-4a30-9c16-46b1b0e11fa0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/923385ec-5b60-4a30-9c16-46b1b0e11fa0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/923385ec-5b60-4a30-9c16-46b1b0e11fa0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x885678e9851ab23b2154a34345a1d72f1ac76d94a84d495b6d07510d92f05fde","name":"Alfréd Holeček","registered_at":"2026-06-17T16:41:33Z","symbol":"NIM1455910","token_address":"0xdd1b37657b49aada2d899acb088704a5587b4b5e","type":"artist","uuid":"923385ec-5b60-4a30-9c16-46b1b0e11fa0"}
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 0x885678e9851ab23b2154a34345a1d72f1ac76d94a84d495b6d07510d92f05fde. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/923385ec-5b60-4a30-9c16-46b1b0e11fa0.json and https://artists.proofprofile.net/proofs/artist/923385ec-5b60-4a30-9c16-46b1b0e11fa0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x885678e9851ab23b2154a34345a1d72f1ac76d94a84d495b6d07510d92f05fde","name":"Alfréd Holeček","registered_at":"2026-06-17T16:41:33Z","symbol":"NIM1455910","token_address":"0xdd1b37657b49aada2d899acb088704a5587b4b5e","type":"artist","uuid":"923385ec-5b60-4a30-9c16-46b1b0e11fa0"}
album: Písně obrozenecké doby
  type: MusicAlbum
  date published: 1954
album: Accompaniment of Violin Solos
  type: MusicAlbum
  date published: 2024-03-29