Brno Classica Chamber Choir
type: MusicGroup
genre: opera
popularity: 3
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4de5168059dbfc8980e5f73a7a5d5f8e97b9c6b5fe38c7f002811ef5f858875
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/a3b828b2-bcb3-417d-af45-1ee102f52b41.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a3b828b2-bcb3-417d-af45-1ee102f52b41.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a3b828b2-bcb3-417d-af45-1ee102f52b41
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc4de5168059dbfc8980e5f73a7a5d5f8e97b9c6b5fe38c7f002811ef5f858875","name":"Brno Classica Chamber Choir","registered_at":"2026-06-20T06:47:17Z","symbol":"NIM1543938","token_address":"0x437a3acfcdd4cd26b7b5abbaa45e475c30d34e9a","type":"artist","uuid":"a3b828b2-bcb3-417d-af45-1ee102f52b41"}
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 0xc4de5168059dbfc8980e5f73a7a5d5f8e97b9c6b5fe38c7f002811ef5f858875. 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/a3b828b2-bcb3-417d-af45-1ee102f52b41.json and https://artists.proofprofile.net/proofs/artist/a3b828b2-bcb3-417d-af45-1ee102f52b41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xc4de5168059dbfc8980e5f73a7a5d5f8e97b9c6b5fe38c7f002811ef5f858875","name":"Brno Classica Chamber Choir","registered_at":"2026-06-20T06:47:17Z","symbol":"NIM1543938","token_address":"0x437a3acfcdd4cd26b7b5abbaa45e475c30d34e9a","type":"artist","uuid":"a3b828b2-bcb3-417d-af45-1ee102f52b41"}
album: Vaccaj: La sposa di Messina
  type: MusicAlbum
  date published: 2012-04-03
album: Rossini: La gazza ladra (Live)
  type: MusicAlbum
  date published: 2015-05-05