Liisi Koikson
type: MusicGroup
description: thumb|Liisi Koikson Liisi Koikson (born 4 June 1983 in Kilingi-Nõmme) is an Estonian singer, singing teacher and actress. Liisi Koikson attended Kilingi-Nõmme Gymnasium, graduating in 2001. Her first
popularity: 4
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63d415a5ce450527d3d41e00cc0733b92c9cbbca2ebcbfb781154df26658ee56
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95738773-7ad3-4228-b6a9-92a7da7fb566.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95738773-7ad3-4228-b6a9-92a7da7fb566.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/95738773-7ad3-4228-b6a9-92a7da7fb566
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x63d415a5ce450527d3d41e00cc0733b92c9cbbca2ebcbfb781154df26658ee56","name":"Liisi Koikson","registered_at":"2026-06-17T17:49:04Z","symbol":"NIM1472034","token_address":"0xd00a598a0339d9acbffd9cd0aa0a4ec159eab752","type":"artist","uuid":"95738773-7ad3-4228-b6a9-92a7da7fb566"}
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 0x63d415a5ce450527d3d41e00cc0733b92c9cbbca2ebcbfb781154df26658ee56. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95738773-7ad3-4228-b6a9-92a7da7fb566.json and https://artists.proofprofile.net/proofs/artist/95738773-7ad3-4228-b6a9-92a7da7fb566.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x63d415a5ce450527d3d41e00cc0733b92c9cbbca2ebcbfb781154df26658ee56","name":"Liisi Koikson","registered_at":"2026-06-17T17:49:04Z","symbol":"NIM1472034","token_address":"0xd00a598a0339d9acbffd9cd0aa0a4ec159eab752","type":"artist","uuid":"95738773-7ad3-4228-b6a9-92a7da7fb566"}