Leevi Koskinen
type: MusicGroup
popularity: 10
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd1402e1306b53f4a318579491c834b1cabe06d7d04d2ee66d8eab4d8dd4e1640
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab6ea677-c491-4410-ae99-3ce4aee97ecf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab6ea677-c491-4410-ae99-3ce4aee97ecf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab6ea677-c491-4410-ae99-3ce4aee97ecf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd1402e1306b53f4a318579491c834b1cabe06d7d04d2ee66d8eab4d8dd4e1640","name":"Leevi Koskinen","registered_at":"2026-06-20T09:26:43Z","symbol":"NIM1579570","token_address":"0xbfd3e85ae6ef48c6a83b3cdfe9d9f2d2917de149","type":"artist","uuid":"ab6ea677-c491-4410-ae99-3ce4aee97ecf"}
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 0xd1402e1306b53f4a318579491c834b1cabe06d7d04d2ee66d8eab4d8dd4e1640. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab6ea677-c491-4410-ae99-3ce4aee97ecf.json and https://artists.proofprofile.net/proofs/artist/ab6ea677-c491-4410-ae99-3ce4aee97ecf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xd1402e1306b53f4a318579491c834b1cabe06d7d04d2ee66d8eab4d8dd4e1640","name":"Leevi Koskinen","registered_at":"2026-06-20T09:26:43Z","symbol":"NIM1579570","token_address":"0xbfd3e85ae6ef48c6a83b3cdfe9d9f2d2917de149","type":"artist","uuid":"ab6ea677-c491-4410-ae99-3ce4aee97ecf"}