Hardsoul
type: MusicGroup
description: Hardsoul is a duo of house music producers and DJs from the Netherlands, made up of the brothers Rogier (DJ Roog) and Greg van Bueren. Biography Founded in 1997, Hardsoul began releasing music on Sou
popularity: 18
followers: 188
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8eb87bf051a3a3534b4c0492e0697e144058dbbedcca2ddbdd05841220fa7230
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e03c77fe-1e6c-4335-9195-73cf3407ebba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e03c77fe-1e6c-4335-9195-73cf3407ebba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e03c77fe-1e6c-4335-9195-73cf3407ebba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
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 0x8eb87bf051a3a3534b4c0492e0697e144058dbbedcca2ddbdd05841220fa7230. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e03c77fe-1e6c-4335-9195-73cf3407ebba.json and https://artists.proofprofile.net/proofs/artist/e03c77fe-1e6c-4335-9195-73cf3407ebba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
album: Die Ghettos Müssen Verrückt Sein
  type: MusicAlbum
  date published: 2009-07-03
album: Pandemonium
  type: MusicAlbum
  date published: 2011-01-07
album: Pandemonium
  type: MusicAlbum
  date published: 2011-01-07
album: Neue Schuhe
  type: MusicAlbum
  date published: 2014-09-17