Ivar Oosterloo
type: MusicGroup
popularity: 10
followers: 880
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdc39246eb99dcb9b5b610ed25d8b91b251cc5daa89d355d4fbaabc5e24a31490
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/efa4fce4-2018-480f-9325-728a9f29af25.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/efa4fce4-2018-480f-9325-728a9f29af25.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/efa4fce4-2018-480f-9325-728a9f29af25
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdc39246eb99dcb9b5b610ed25d8b91b251cc5daa89d355d4fbaabc5e24a31490","name":"Ivar Oosterloo","registered_at":"2026-06-21T12:24:41Z","symbol":"NIM1922717","token_address":"0xa0b7bb00e3e4fb0cf5f5242e4af4251dcfe99da2","type":"artist","uuid":"efa4fce4-2018-480f-9325-728a9f29af25"}
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 0xdc39246eb99dcb9b5b610ed25d8b91b251cc5daa89d355d4fbaabc5e24a31490. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efa4fce4-2018-480f-9325-728a9f29af25.json and https://artists.proofprofile.net/proofs/artist/efa4fce4-2018-480f-9325-728a9f29af25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xdc39246eb99dcb9b5b610ed25d8b91b251cc5daa89d355d4fbaabc5e24a31490","name":"Ivar Oosterloo","registered_at":"2026-06-21T12:24:41Z","symbol":"NIM1922717","token_address":"0xa0b7bb00e3e4fb0cf5f5242e4af4251dcfe99da2","type":"artist","uuid":"efa4fce4-2018-480f-9325-728a9f29af25"}
album: Hit Me Baby One More Time
  type: MusicAlbum
  date published: 2012-09-01
album: Hit Me Baby One More Time
  type: MusicAlbum
  date published: 2012-09-01
album: Against All Odds
  type: MusicAlbum
  date published: 2012-11-10
album: Against All Odds
  type: MusicAlbum
  date published: 2012-11-10
album: Breakeven
  type: MusicAlbum
  date published: 2012-11-28
album: Breakeven (From The Voice Of Holland)
  type: MusicAlbum
  date published: 2012-11-28
album: Apologize
  type: MusicAlbum
  date published: 2012-12-01
album: Apologize (From The Voice Of Holland)
  type: MusicAlbum
  date published: 2012-12-01
album: Baby (From The Voice Of Holland)
  type: MusicAlbum
  date published: 2012-12-08
album: Baby
  type: MusicAlbum
  date published: 2012-12-08
album: Dansen In Mijn Hoofd
  type: MusicAlbum
  date published: 2013-09-06
album: Dansen In Mijn Hoofd
  type: MusicAlbum
  date published: 2013-09-06
album: Alles Of Niets (Radio Edit)
  type: MusicAlbum
  date published: 2015-09-07