Heavy Metal Machines
type: MusicGroup
description: Heavy Metal Machines (HMM) was a car battle MOBA video game developed and published by Hoplon Infotainment. HMM was a free-to-play game available on Steam, where teams of four battle on arenas with a
popularity: 3
followers: 542
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8910cb96-e24e-4609-bdb6-5619713776ab.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8910cb96-e24e-4609-bdb6-5619713776ab
additional property: OTSTimestamp
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  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694bb7e77903d7fcae6b5f944fcc99e767206ab47c1b30f2ed46f869d2d7fc5e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8910cb96-e24e-4609-bdb6-5619713776ab.json and https://artists.proofprofile.net/proofs/artist/8910cb96-e24e-4609-bdb6-5619713776ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x694bb7e77903d7fcae6b5f944fcc99e767206ab47c1b30f2ed46f869d2d7fc5e","name":"Heavy Metal Machines","registered_at":"2026-06-17T13:26:01Z","symbol":"NIM1409226","token_address":"0x6bec15b66678d606c7ad99de36fe1286bc98e67c","type":"artist","uuid":"8910cb96-e24e-4609-bdb6-5619713776ab"}
album: Heavy Metal Machines (Official Soundtrack)
  type: MusicAlbum
  date published: 2018-09-19
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