Maria Wiik
type: MusicGroup
description: Maria Catharina Wiik (3 August 1853 – 19 June 1928) was a Finnish painter. She worked principally with still life, genre images, landscape paintings and portraits. Biography Wiik was born in Helsinki
popularity: 4
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa99e0bd662c3433e0bef10bb7e0ace38797063efc00857cc5bf54305a6eb05cf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e400b75-3417-4e75-bed6-ccedd0e21157.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1e400b75-3417-4e75-bed6-ccedd0e21157.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1e400b75-3417-4e75-bed6-ccedd0e21157
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa99e0bd662c3433e0bef10bb7e0ace38797063efc00857cc5bf54305a6eb05cf","name":"Maria Wiik","registered_at":"2026-06-16T00:06:19Z","symbol":"NIM0874877","token_address":"0xb6ac9d38dc0917ff8da7776b459b72e85b09dada","type":"artist","uuid":"1e400b75-3417-4e75-bed6-ccedd0e21157"}
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 0xa99e0bd662c3433e0bef10bb7e0ace38797063efc00857cc5bf54305a6eb05cf. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e400b75-3417-4e75-bed6-ccedd0e21157.json and https://artists.proofprofile.net/proofs/artist/1e400b75-3417-4e75-bed6-ccedd0e21157.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xa99e0bd662c3433e0bef10bb7e0ace38797063efc00857cc5bf54305a6eb05cf","name":"Maria Wiik","registered_at":"2026-06-16T00:06:19Z","symbol":"NIM0874877","token_address":"0xb6ac9d38dc0917ff8da7776b459b72e85b09dada","type":"artist","uuid":"1e400b75-3417-4e75-bed6-ccedd0e21157"}