Pertsa Koivula
type: MusicGroup
genre: finnish pop
genre: iskelmä
genre: tango
popularity: 4
followers: 310
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3d23cb7442a19a86d725c87feab0de30d9d89803308fb50ff461bf3b724f737
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954131
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954131
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7db188b5-ca44-4d5d-bf52-77284186e113.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7db188b5-ca44-4d5d-bf52-77284186e113.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7db188b5-ca44-4d5d-bf52-77284186e113
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:19:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd3d23cb7442a19a86d725c87feab0de30d9d89803308fb50ff461bf3b724f737","name":"Pertsa Koivula","registered_at":"2026-06-17T09:24:35Z","symbol":"NIM1351727","token_address":"0xf9597bd4ec4b1c841992a143c03e4757c65a7dd6","type":"artist","uuid":"7db188b5-ca44-4d5d-bf52-77284186e113"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d23cb7442a19a86d725c87feab0de30d9d89803308fb50ff461bf3b724f737. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7db188b5-ca44-4d5d-bf52-77284186e113.json and https://artists.proofprofile.net/proofs/artist/7db188b5-ca44-4d5d-bf52-77284186e113.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:19:19Z
  text: {"copyright_id":"0xd3d23cb7442a19a86d725c87feab0de30d9d89803308fb50ff461bf3b724f737","name":"Pertsa Koivula","registered_at":"2026-06-17T09:24:35Z","symbol":"NIM1351727","token_address":"0xf9597bd4ec4b1c841992a143c03e4757c65a7dd6","type":"artist","uuid":"7db188b5-ca44-4d5d-bf52-77284186e113"}
album: Tähden näin
  type: MusicAlbum
  date published: 1998-01-01