FourPlay String Quartet
type: MusicGroup
description: FourPlay String Quartet are an Australian string quartet from Sydney, formed in 1995 and renowned for playing music not typically associated with the format. FourPlay's members include brothers Tim H
popularity: 11
followers: 2969
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x58b5ea6dd8d8bb0da9d2f69db5b488bdf0ad7e45c387c2a0d35bdbdb3992f2ce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953741
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953741
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a05d3d68-3722-4213-8e2b-a0d3ae2e857d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a05d3d68-3722-4213-8e2b-a0d3ae2e857d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a05d3d68-3722-4213-8e2b-a0d3ae2e857d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:44:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x58b5ea6dd8d8bb0da9d2f69db5b488bdf0ad7e45c387c2a0d35bdbdb3992f2ce","name":"FourPlay String Quartet","registered_at":"2026-06-14T21:18:42Z","symbol":"NIM0579471","token_address":"0x3bc5cbbb23793bee505a864e9f9d86178b220ac0","type":"artist","uuid":"a05d3d68-3722-4213-8e2b-a0d3ae2e857d"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b5ea6dd8d8bb0da9d2f69db5b488bdf0ad7e45c387c2a0d35bdbdb3992f2ce. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a05d3d68-3722-4213-8e2b-a0d3ae2e857d.json and https://artists.proofprofile.net/proofs/artist/a05d3d68-3722-4213-8e2b-a0d3ae2e857d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:44:49Z
  text: {"copyright_id":"0x58b5ea6dd8d8bb0da9d2f69db5b488bdf0ad7e45c387c2a0d35bdbdb3992f2ce","name":"FourPlay String Quartet","registered_at":"2026-06-14T21:18:42Z","symbol":"NIM0579471","token_address":"0x3bc5cbbb23793bee505a864e9f9d86178b220ac0","type":"artist","uuid":"a05d3d68-3722-4213-8e2b-a0d3ae2e857d"}
album: Catgut Ya' Tongue?
  type: MusicAlbum
  date published: 1998
album: The Joy Of...
  type: MusicAlbum
  date published: 2000
album: Digital Manipulation: the FourPlay Remix Project
  type: MusicAlbum
  date published: 2001
album: Now To The Future
  type: MusicAlbum
  date published: 2006-11-07
album: Fourthcoming
  type: MusicAlbum
  date published: 2009-06-23
album: This Machine
  type: MusicAlbum
  date published: 2014-10-10
album: Bound
  type: MusicAlbum
  date published: 2018-04-24
album: Wish
  type: MusicAlbum
  date published: 2018-08-08
album: Something Is Going Wrong
  type: MusicAlbum
  date published: 2023-06-15
album: A Taste Of...
  type: MusicAlbum
  date published: 2023-07-14