MAR.
type: MusicGroup
genre: nederpop
popularity: 6
followers: 479
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e7382e5944a43683a8d02f96a0c231968d14d421239df421022df3d93fd60ce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d774b8b0-d9c1-4cad-86e8-ca8b3a7863c9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d774b8b0-d9c1-4cad-86e8-ca8b3a7863c9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d774b8b0-d9c1-4cad-86e8-ca8b3a7863c9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
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 0x0e7382e5944a43683a8d02f96a0c231968d14d421239df421022df3d93fd60ce. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d774b8b0-d9c1-4cad-86e8-ca8b3a7863c9.json and https://artists.proofprofile.net/proofs/artist/d774b8b0-d9c1-4cad-86e8-ca8b3a7863c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
album: Grote Meisjes Huilen Niet
  type: MusicAlbum
  date published: 2019-01-07
album: Glas Wijn
  type: MusicAlbum
  date published: 2020-05-08
album: Laad Me
  type: MusicAlbum
  date published: 2020-08-14
album: Met Mij Komt Alles Goed
  type: MusicAlbum
  date published: 2021-03-19
album: Meisje uit Parijs
  type: MusicAlbum
  date published: 2022-04-22
album: Rennen
  type: MusicAlbum
  date published: 2022-07-15
album: Feest der Herkenning
  type: MusicAlbum
  date published: 2022-11-18
album: Sh*t, Ik Ben Oké
  type: MusicAlbum
  date published: 2023-07-07