Artvark Saxophone Quartet
type: MusicGroup
popularity: 6
followers: 1076
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x08b838ee6ab9ccdfba9aa0a3e542229a983e46609ff3ac799c52c140224848bc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31d9b8df-5a18-4166-bc7a-e26c7f6ddcc1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31d9b8df-5a18-4166-bc7a-e26c7f6ddcc1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/31d9b8df-5a18-4166-bc7a-e26c7f6ddcc1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x08b838ee6ab9ccdfba9aa0a3e542229a983e46609ff3ac799c52c140224848bc","name":"Artvark Saxophone Quartet","registered_at":"2026-06-16T06:52:15Z","symbol":"NIM0971831","token_address":"0xa3132ef1961bcae3006821e43da410448d485d2d","type":"artist","uuid":"31d9b8df-5a18-4166-bc7a-e26c7f6ddcc1"}
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 0x08b838ee6ab9ccdfba9aa0a3e542229a983e46609ff3ac799c52c140224848bc. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31d9b8df-5a18-4166-bc7a-e26c7f6ddcc1.json and https://artists.proofprofile.net/proofs/artist/31d9b8df-5a18-4166-bc7a-e26c7f6ddcc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x08b838ee6ab9ccdfba9aa0a3e542229a983e46609ff3ac799c52c140224848bc","name":"Artvark Saxophone Quartet","registered_at":"2026-06-16T06:52:15Z","symbol":"NIM0971831","token_address":"0xa3132ef1961bcae3006821e43da410448d485d2d","type":"artist","uuid":"31d9b8df-5a18-4166-bc7a-e26c7f6ddcc1"}
album: Artvark, the Jazz Saxophone Quartet (Remastered)
  type: MusicAlbum
  date published: 2005-11-06
album: Truffles
  type: MusicAlbum
  date published: 2010-01-10
album: Sly Meets Callas
  type: MusicAlbum
  date published: 2012-02-06
album: Bluestories
  type: MusicAlbum
  date published: 2013-11-29
album: Bluestories
  type: MusicAlbum
  date published: 2013-12-07
album: Homelands (Live in Rotterdam)
  type: MusicAlbum
  date published: 2017-02-12
album: Trance - A Symphonic Poem for Hogs and a Truffle
  type: MusicAlbum
  date published: 2017-09-15
album: Apollo and Artvark - Two Saxophone Quartets Collide and Merge (Manchester - Rotterdam)
  type: MusicAlbum
  date published: 2019-03-29
album: A Slide's Nest
  type: MusicAlbum
  date published: 2021-06-21
album: Inner Circle
  type: MusicAlbum
  date published: 2021-07-21
album: STNKS
  type: MusicAlbum
  date published: 2021-08-21
album: Mother of Thousand
  type: MusicAlbum
  date published: 2021-09-21
album: Jan Douwe Kroeske presents: 2 Meter Sessions #1802 – Artvark Saxophone Quartet
  type: MusicAlbum
  date published: 2022-10-14
album: Tagelyk
  type: MusicAlbum
  date published: 2023-06-14
album: Wâldman
  type: MusicAlbum
  date published: 2023-10-17
album: Psaume 149 / Encore une quatre
  type: MusicAlbum
  date published: 2025-04-11
album: Don't Look Up
  type: MusicAlbum
  date published: 2025-05-02
album: Sweelinck Artvark Andriessen
  type: MusicAlbum
  date published: 2025-05-09