Karien
type: MusicGroup
description: Karien is an Afrikaans and a Dutch feminine given name. Notable people known by this name include the following: Karien Robbers (born 1993), a Dutch rower. Karien van Gennip, nickname of Catharina E
popularity: 11
followers: 105
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb406e3a8c33d4fd5e5bff60a5866c2e8d1b3b3574d0e17f469b1124b4acf321
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953721
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953721
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a6e4d92-b238-4b7e-839b-125e5026eb73.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a6e4d92-b238-4b7e-839b-125e5026eb73.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8a6e4d92-b238-4b7e-839b-125e5026eb73
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:12:01Z
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 0xbb406e3a8c33d4fd5e5bff60a5866c2e8d1b3b3574d0e17f469b1124b4acf321. Chain 2 (Bitcoin): anchored in block 953722 (2026-06-15T01:21:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a6e4d92-b238-4b7e-839b-125e5026eb73.json and https://artists.proofprofile.net/proofs/artist/8a6e4d92-b238-4b7e-839b-125e5026eb73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:21:43Z
album: Kortgeknip
  type: MusicAlbum
  date published: 2025-04-11