Karl Dönch
type: MusicGroup
genre: opera
popularity: 13
followers: 69
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ab10399865a0e87fa3e294b4f2a79f24fc02964b2854479564fa50351c83c83
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953791
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953791
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcd4f637-608c-4851-a7b7-f19caa90c9eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dcd4f637-608c-4851-a7b7-f19caa90c9eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dcd4f637-608c-4851-a7b7-f19caa90c9eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T13:40:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4ab10399865a0e87fa3e294b4f2a79f24fc02964b2854479564fa50351c83c83","name":"Karl Dönch","registered_at":"2026-06-15T03:42:47Z","symbol":"NIM0671204","token_address":"0x94e4fe47d2f11fc9929579337d2c3179a263fcc5","type":"artist","uuid":"dcd4f637-608c-4851-a7b7-f19caa90c9eb"}
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 0x4ab10399865a0e87fa3e294b4f2a79f24fc02964b2854479564fa50351c83c83. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcd4f637-608c-4851-a7b7-f19caa90c9eb.json and https://artists.proofprofile.net/proofs/artist/dcd4f637-608c-4851-a7b7-f19caa90c9eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0x4ab10399865a0e87fa3e294b4f2a79f24fc02964b2854479564fa50351c83c83","name":"Karl Dönch","registered_at":"2026-06-15T03:42:47Z","symbol":"NIM0671204","token_address":"0x94e4fe47d2f11fc9929579337d2c3179a263fcc5","type":"artist","uuid":"dcd4f637-608c-4851-a7b7-f19caa90c9eb"}
album: Strauss: Die Zigeunerbaron
  type: MusicAlbum
  date published: 1951-01-01