Klavierquintett Wien
type: MusicGroup
genre: chamber music
popularity: 4
followers: 21
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f8a5d5a7df9b617ebd61c8966da53a1782a599cae8e1751bc7472bebb770209
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fae8ce4a-54e8-4f2b-8d25-fc4e0e4ca282.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fae8ce4a-54e8-4f2b-8d25-fc4e0e4ca282.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fae8ce4a-54e8-4f2b-8d25-fc4e0e4ca282
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0f8a5d5a7df9b617ebd61c8966da53a1782a599cae8e1751bc7472bebb770209","name":"Klavierquintett Wien","registered_at":"2026-06-21T17:03:12Z","symbol":"NIM1981958","token_address":"0x0e207239e4e1ca0fa0a7d1fd2bab84675465681f","type":"artist","uuid":"fae8ce4a-54e8-4f2b-8d25-fc4e0e4ca282"}
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 0x0f8a5d5a7df9b617ebd61c8966da53a1782a599cae8e1751bc7472bebb770209. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fae8ce4a-54e8-4f2b-8d25-fc4e0e4ca282.json and https://artists.proofprofile.net/proofs/artist/fae8ce4a-54e8-4f2b-8d25-fc4e0e4ca282.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x0f8a5d5a7df9b617ebd61c8966da53a1782a599cae8e1751bc7472bebb770209","name":"Klavierquintett Wien","registered_at":"2026-06-21T17:03:12Z","symbol":"NIM1981958","token_address":"0x0e207239e4e1ca0fa0a7d1fd2bab84675465681f","type":"artist","uuid":"fae8ce4a-54e8-4f2b-8d25-fc4e0e4ca282"}