Liisa Matveinen
type: MusicGroup
popularity: 3
followers: 256
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66ffa6d09fc97bc2023842c1511b43a7a2886db2670edc4ed988c081d1d22859
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953875
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953875
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/081bd03d-b470-4a25-8334-b15365185537.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/081bd03d-b470-4a25-8334-b15365185537.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/081bd03d-b470-4a25-8334-b15365185537
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:12:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66ffa6d09fc97bc2023842c1511b43a7a2886db2670edc4ed988c081d1d22859","name":"Liisa Matveinen","registered_at":"2026-06-15T16:20:59Z","symbol":"NIM0763860","token_address":"0xf56c338deece83f56dc17dfaf73359ffec8ae8c4","type":"artist","uuid":"081bd03d-b470-4a25-8334-b15365185537"}
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 0x66ffa6d09fc97bc2023842c1511b43a7a2886db2670edc4ed988c081d1d22859. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/081bd03d-b470-4a25-8334-b15365185537.json and https://artists.proofprofile.net/proofs/artist/081bd03d-b470-4a25-8334-b15365185537.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x66ffa6d09fc97bc2023842c1511b43a7a2886db2670edc4ed988c081d1d22859","name":"Liisa Matveinen","registered_at":"2026-06-15T16:20:59Z","symbol":"NIM0763860","token_address":"0xf56c338deece83f56dc17dfaf73359ffec8ae8c4","type":"artist","uuid":"081bd03d-b470-4a25-8334-b15365185537"}
album: Ottilia
  type: MusicAlbum
  date published: 1996
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  type: MusicAlbum
  date published: 2023-04-14
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  type: MusicAlbum
  date published: 2023-05-05
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  type: MusicAlbum
  date published: 2023-05-26