Schola of the Hofburgkapelle, Vienna
type: MusicGroup
genre: gregorian chant
genre: medieval
popularity: 39
followers: 1516
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6009ee28f4b88e7633022bf497726a7be56b4828b316e90ace46f9adf2bc51c4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad338f27-8894-4afc-8d48-125fa26e4498.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad338f27-8894-4afc-8d48-125fa26e4498.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad338f27-8894-4afc-8d48-125fa26e4498
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6009ee28f4b88e7633022bf497726a7be56b4828b316e90ace46f9adf2bc51c4","name":"Schola of the Hofburgkapelle, Vienna","registered_at":"2026-06-12T07:09:15Z","symbol":"NIM0223848","token_address":"0x9c8fb9885efa1c40b5b4194c5bd09b0f06a68d05","type":"artist","uuid":"ad338f27-8894-4afc-8d48-125fa26e4498"}
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 0x6009ee28f4b88e7633022bf497726a7be56b4828b316e90ace46f9adf2bc51c4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad338f27-8894-4afc-8d48-125fa26e4498.json and https://artists.proofprofile.net/proofs/artist/ad338f27-8894-4afc-8d48-125fa26e4498.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x6009ee28f4b88e7633022bf497726a7be56b4828b316e90ace46f9adf2bc51c4","name":"Schola of the Hofburgkapelle, Vienna","registered_at":"2026-06-12T07:09:15Z","symbol":"NIM0223848","token_address":"0x9c8fb9885efa1c40b5b4194c5bd09b0f06a68d05","type":"artist","uuid":"ad338f27-8894-4afc-8d48-125fa26e4498"}