Tykkimäki
type: MusicGroup
description: Tykkimäki () is an amusement park in Kouvola, Finland. It has 30 different rides, along with some restaurants and kiosks. A camping site and Lake Käyrälampi are located near Tykkimäki. The park opene
popularity: 2
followers: 45
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf7061946376fa7eeaa8f73d1364d15cec6c1698b1fddc4de4b4630cf9ac22447
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d94af332-fc5f-4d4e-ba2e-2e89af88f5c3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d94af332-fc5f-4d4e-ba2e-2e89af88f5c3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d94af332-fc5f-4d4e-ba2e-2e89af88f5c3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf7061946376fa7eeaa8f73d1364d15cec6c1698b1fddc4de4b4630cf9ac22447","name":"Tykkimäki","registered_at":"2026-06-21T04:13:14Z","symbol":"NIM1812483","token_address":"0xc9b1db0c10f842ecb7debfdbfd4f06d2fbbf9be7","type":"artist","uuid":"d94af332-fc5f-4d4e-ba2e-2e89af88f5c3"}
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 0xf7061946376fa7eeaa8f73d1364d15cec6c1698b1fddc4de4b4630cf9ac22447. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d94af332-fc5f-4d4e-ba2e-2e89af88f5c3.json and https://artists.proofprofile.net/proofs/artist/d94af332-fc5f-4d4e-ba2e-2e89af88f5c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0xf7061946376fa7eeaa8f73d1364d15cec6c1698b1fddc4de4b4630cf9ac22447","name":"Tykkimäki","registered_at":"2026-06-21T04:13:14Z","symbol":"NIM1812483","token_address":"0xc9b1db0c10f842ecb7debfdbfd4f06d2fbbf9be7","type":"artist","uuid":"d94af332-fc5f-4d4e-ba2e-2e89af88f5c3"}
album: Tykkimäkeen
  type: MusicAlbum
  date published: 2004-01-01