Quadrophonia
type: MusicGroup
description: Quadrophonia were a Dutch/Belgian Techno music collective, formed by Olivier Abbeloos (also known as part of T99) and Lucien Foort in the late 1980s, with several of their tracks performed by Marvin D
popularity: 12
followers: 1071
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x22dc36d04ef9409583f49a94c4c02542fd61568d4a49bb814604f2711d135b00
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953674
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953674
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/604ed1f7-c95f-43b9-bfd9-d33bd322bae8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/604ed1f7-c95f-43b9-bfd9-d33bd322bae8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/604ed1f7-c95f-43b9-bfd9-d33bd322bae8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:07:16Z
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 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 0x22dc36d04ef9409583f49a94c4c02542fd61568d4a49bb814604f2711d135b00. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/604ed1f7-c95f-43b9-bfd9-d33bd322bae8.json and https://artists.proofprofile.net/proofs/artist/604ed1f7-c95f-43b9-bfd9-d33bd322bae8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T19:07:16Z
album: Quadrophonia (Erik Schouten Remix)
  type: MusicAlbum
  date published: 2014-06-09
album: Quadrophonia (UMEK Remix & Dark Dub)
  type: MusicAlbum
  date published: 2022-12-23
album: Quadrophonia (Umek Remix & Dark Dub)
  type: MusicAlbum
  date published: 2022-12-23