Coull Quartet
type: MusicGroup
genre: chamber music
description: The Coull Quartet is an English string quartet that was founded at the Royal Academy of Music, London in 1974 under the guidance of renowned quartet leader, Sidney Griller. They were appointed Quartet
popularity: 10
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x54559a46f38bdfb6c762a24360039f284f7b2df757618dc3786a23b29774a1e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d008a209-cddc-4fe7-9ac1-58d0a6d488a4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d008a209-cddc-4fe7-9ac1-58d0a6d488a4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d008a209-cddc-4fe7-9ac1-58d0a6d488a4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x54559a46f38bdfb6c762a24360039f284f7b2df757618dc3786a23b29774a1e2","name":"Coull Quartet","registered_at":"2026-06-21T00:35:37Z","symbol":"NIM1764212","token_address":"0xabcd1e5eada64d1f70eedcbf64b997e8d410af98","type":"artist","uuid":"d008a209-cddc-4fe7-9ac1-58d0a6d488a4"}
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 0x54559a46f38bdfb6c762a24360039f284f7b2df757618dc3786a23b29774a1e2. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d008a209-cddc-4fe7-9ac1-58d0a6d488a4.json and https://artists.proofprofile.net/proofs/artist/d008a209-cddc-4fe7-9ac1-58d0a6d488a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x54559a46f38bdfb6c762a24360039f284f7b2df757618dc3786a23b29774a1e2","name":"Coull Quartet","registered_at":"2026-06-21T00:35:37Z","symbol":"NIM1764212","token_address":"0xabcd1e5eada64d1f70eedcbf64b997e8d410af98","type":"artist","uuid":"d008a209-cddc-4fe7-9ac1-58d0a6d488a4"}
album: Elgar: String Quartet – Bridge: Idylls – Walton: String Quartet
  type: MusicAlbum
  date published: 1994-07-01
album: Schubert String Quartets Vol. 2
  type: MusicAlbum
  date published: 1997
album: Schubert String Quartets Vol. 3
  type: MusicAlbum
  date published: 1998
album: Schubert String Quartets Vol. 4
  type: MusicAlbum
  date published: 1999
album: Schubert String Quartets Vol. 6
  type: MusicAlbum
  date published: 2000
album: Schubert String Quartets Vol. 5
  type: MusicAlbum
  date published: 2000
album: Schubert String Quartets Vol. 1
  type: MusicAlbum
  date published: 2007-08-01
album: Songs from A E Housman's: A Shropshire Lad
  type: MusicAlbum
  date published: 2010-01-03
album: Maw: String Quartet No. 3 - Britten: String Quartet No. 3
  type: MusicAlbum
  date published: 2014-02-01
album: Maw: String Quartet No. 3 - Britten: String Quartet No. 3
  type: MusicAlbum
  date published: 2014-02-01