Zachary Hietala
type: MusicGroup
description: Sakari "Zachary" Hietala (born August 10, 1962 in Tervo, Finland) is the guitarist, co-songwriter and founding member of Finnish heavy metal band Tarot (formerly Purgatory) in early 1980s, together wi
popularity: 7
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7c682bb6655f5708f72144da13dd90938a607fefee40d2cada87fc30338a566b
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/707eecd3-7a60-4ca2-a42f-f7c80f7e4065.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/707eecd3-7a60-4ca2-a42f-f7c80f7e4065.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/707eecd3-7a60-4ca2-a42f-f7c80f7e4065
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7c682bb6655f5708f72144da13dd90938a607fefee40d2cada87fc30338a566b","name":"Zachary Hietala","registered_at":"2026-06-17T04:51:55Z","symbol":"NIM1286729","token_address":"0xbc105c89254841df78da942b14c9639e4a1658f3","type":"artist","uuid":"707eecd3-7a60-4ca2-a42f-f7c80f7e4065"}
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 0x7c682bb6655f5708f72144da13dd90938a607fefee40d2cada87fc30338a566b. 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/707eecd3-7a60-4ca2-a42f-f7c80f7e4065.json and https://artists.proofprofile.net/proofs/artist/707eecd3-7a60-4ca2-a42f-f7c80f7e4065.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x7c682bb6655f5708f72144da13dd90938a607fefee40d2cada87fc30338a566b","name":"Zachary Hietala","registered_at":"2026-06-17T04:51:55Z","symbol":"NIM1286729","token_address":"0xbc105c89254841df78da942b14c9639e4a1658f3","type":"artist","uuid":"707eecd3-7a60-4ca2-a42f-f7c80f7e4065"}