Quartette
type: MusicGroup
popularity: 4
followers: 528
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdce51de082ca2dc60a412dc89b9e06694e715ee30b501b89cc7c584ab8a11438
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8a43506-5474-41c9-aaf5-f778fcb22637.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8a43506-5474-41c9-aaf5-f778fcb22637.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b8a43506-5474-41c9-aaf5-f778fcb22637
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
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 0xdce51de082ca2dc60a412dc89b9e06694e715ee30b501b89cc7c584ab8a11438. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8a43506-5474-41c9-aaf5-f778fcb22637.json and https://artists.proofprofile.net/proofs/artist/b8a43506-5474-41c9-aaf5-f778fcb22637.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
album: Work of the Heart
  type: MusicAlbum
  date published: 1994-11-15
album: O Canada
  type: MusicAlbum
  date published: 1995-11-15
album: It's Christmas!
  type: MusicAlbum
  date published: 1996-11-15
album: In the Beauty of the Day
  type: MusicAlbum
  date published: 1998-11-15
album: I See a Star
  type: MusicAlbum
  date published: 2002-11-15
album: Quartette
  type: MusicAlbum
  date published: 2005-11-15
album: Down at the Fair
  type: MusicAlbum
  date published: 2007-09-25
album: Down at the Fair
  type: MusicAlbum
  date published: 2007-09-25
album: Rocks and Roses
  type: MusicAlbum
  date published: 2013-11-12
album: Rocks and Roses
  type: MusicAlbum
  date published: 2013-11-12