Quatuor Ardeo
type: MusicGroup
genre: chamber music
popularity: 9
followers: 268
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe9e4d971b5bc09028dbbc86f10bd32936b5b971025b01d6d44c44d79f7b33f1e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ff2f6a0-ff6d-4770-9682-242338004a9b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ff2f6a0-ff6d-4770-9682-242338004a9b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ff2f6a0-ff6d-4770-9682-242338004a9b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe9e4d971b5bc09028dbbc86f10bd32936b5b971025b01d6d44c44d79f7b33f1e","name":"Quatuor Ardeo","registered_at":"2026-06-16T17:26:19Z","symbol":"NIM1123132","token_address":"0x77a5608a34ac96380925ee9d2c3e3ee1b9c458c4","type":"artist","uuid":"4ff2f6a0-ff6d-4770-9682-242338004a9b"}
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 0xe9e4d971b5bc09028dbbc86f10bd32936b5b971025b01d6d44c44d79f7b33f1e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ff2f6a0-ff6d-4770-9682-242338004a9b.json and https://artists.proofprofile.net/proofs/artist/4ff2f6a0-ff6d-4770-9682-242338004a9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xe9e4d971b5bc09028dbbc86f10bd32936b5b971025b01d6d44c44d79f7b33f1e","name":"Quatuor Ardeo","registered_at":"2026-06-16T17:26:19Z","symbol":"NIM1123132","token_address":"0x77a5608a34ac96380925ee9d2c3e3ee1b9c458c4","type":"artist","uuid":"4ff2f6a0-ff6d-4770-9682-242338004a9b"}
album: XIII
  type: MusicAlbum
  date published: 2020-09-04
album: XIII
  type: MusicAlbum
  date published: 2020-09-04