van Rooyen
type: MusicGroup
description: Van Rooyen or Van Rooijen () is an Afrikaans and Dutch toponymic surname. "Rooij" or "Roij" was a local term for many towns ending with "rode" or "roij", like Nistelrode, Sint-Oedenrode, Stramproy an
popularity: 7
followers: 49
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a09c4ccbfd0196ebc89c125a52a1c00961c537b4dc2b7ef60dfd1fca8dced56
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6a9f0334-eb02-481c-abd2-405a77c89392.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6a9f0334-eb02-481c-abd2-405a77c89392.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6a9f0334-eb02-481c-abd2-405a77c89392
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7a09c4ccbfd0196ebc89c125a52a1c00961c537b4dc2b7ef60dfd1fca8dced56","name":"van Rooyen","registered_at":"2026-06-17T03:07:57Z","symbol":"NIM1261898","token_address":"0x62fa4efbfc7d29bacd9bc22d11804fcc180133f6","type":"artist","uuid":"6a9f0334-eb02-481c-abd2-405a77c89392"}
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 0x7a09c4ccbfd0196ebc89c125a52a1c00961c537b4dc2b7ef60dfd1fca8dced56. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a9f0334-eb02-481c-abd2-405a77c89392.json and https://artists.proofprofile.net/proofs/artist/6a9f0334-eb02-481c-abd2-405a77c89392.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x7a09c4ccbfd0196ebc89c125a52a1c00961c537b4dc2b7ef60dfd1fca8dced56","name":"van Rooyen","registered_at":"2026-06-17T03:07:57Z","symbol":"NIM1261898","token_address":"0x62fa4efbfc7d29bacd9bc22d11804fcc180133f6","type":"artist","uuid":"6a9f0334-eb02-481c-abd2-405a77c89392"}