ATK
type: MusicGroup
description: ATK may refer to: Companies Alliant Techsystems, an American aerospace, defense, and sporting goods company, now part of Northrop Grumman ATK motorcycles, an off-road motorcycle manufacturer A.T. Kea
popularity: 2
followers: 158
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2cc05bfeb334f45ad1150515c2e8e63bcdaa8737abd2fec9f4141b570a6716b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f8e26b5-d3b6-4233-ac98-12b0b77d3c30.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f8e26b5-d3b6-4233-ac98-12b0b77d3c30.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f8e26b5-d3b6-4233-ac98-12b0b77d3c30
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x2cc05bfeb334f45ad1150515c2e8e63bcdaa8737abd2fec9f4141b570a6716b3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f8e26b5-d3b6-4233-ac98-12b0b77d3c30.json and https://artists.proofprofile.net/proofs/artist/6f8e26b5-d3b6-4233-ac98-12b0b77d3c30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Tekosyypää
  type: MusicAlbum
  date published: 2017-10-27
album: 1.0
  type: MusicAlbum
  date published: 2017-11-10
album: ATK
  type: MusicAlbum
  date published: 2018-01-31
album: Vihannes
  type: MusicAlbum
  date published: 2018-03-21
album: 2.0
  type: MusicAlbum
  date published: 2018-04-20
album: I & II
  type: MusicAlbum
  date published: 2018-11-30
album: Jouluvauva
  type: MusicAlbum
  date published: 2019-12-20
album: 3.0
  type: MusicAlbum
  date published: 2020-03-13