Häkkilä
type: MusicGroup
genre: finnish hip hop
popularity: 16
followers: 253
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe2f137f26a0716a0d7ebf162c0198650158a47e34f46020b30217e1fec7d9fbc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953588
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953588
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/024910d6-3b8d-452a-8feb-49a6536614f8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/024910d6-3b8d-452a-8feb-49a6536614f8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/024910d6-3b8d-452a-8feb-49a6536614f8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T04:52:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe2f137f26a0716a0d7ebf162c0198650158a47e34f46020b30217e1fec7d9fbc","name":"Häkkilä","registered_at":"2026-06-14T04:41:11Z","symbol":"NIM0341589","token_address":"0xcfeb369199e332ff13f15641202a1003e13002f9","type":"artist","uuid":"024910d6-3b8d-452a-8feb-49a6536614f8"}
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 0xe2f137f26a0716a0d7ebf162c0198650158a47e34f46020b30217e1fec7d9fbc. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/024910d6-3b8d-452a-8feb-49a6536614f8.json and https://artists.proofprofile.net/proofs/artist/024910d6-3b8d-452a-8feb-49a6536614f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T04:52:46Z
  text: {"copyright_id":"0xe2f137f26a0716a0d7ebf162c0198650158a47e34f46020b30217e1fec7d9fbc","name":"Häkkilä","registered_at":"2026-06-14T04:41:11Z","symbol":"NIM0341589","token_address":"0xcfeb369199e332ff13f15641202a1003e13002f9","type":"artist","uuid":"024910d6-3b8d-452a-8feb-49a6536614f8"}
album: Jotain Hyvää
  type: MusicAlbum
  date published: 2020-01-10
album: iHani
  type: MusicAlbum
  date published: 2020-09-18
album: Family Guy
  type: MusicAlbum
  date published: 2021-01-15