Arma
type: MusicGroup
genre: black metal
genre: speed metal
genre: thrash metal
description: Arma, ARMA or variants, may refer to: Places Arma, Kansas, United States Arma, Nepal Arma District, Peru Arma District, Yemen Arma Mountains, Afghanistan People Arma people, an ethnic group of
popularity: 5
followers: 1531
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6af396356cacc90f06ca8fbbadfccb1d0c4f366fc968a6a6bce8c968758782e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1bfb621d-2ef1-49e2-b7dd-b000b0833c2f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1bfb621d-2ef1-49e2-b7dd-b000b0833c2f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1bfb621d-2ef1-49e2-b7dd-b000b0833c2f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
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 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 0x6af396356cacc90f06ca8fbbadfccb1d0c4f366fc968a6a6bce8c968758782e6. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bfb621d-2ef1-49e2-b7dd-b000b0833c2f.json and https://artists.proofprofile.net/proofs/artist/1bfb621d-2ef1-49e2-b7dd-b000b0833c2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:36:34Z
album: Metal Punk Attack
  type: MusicAlbum
  date published: 2015-06-13
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  type: MusicAlbum
  date published: 2020-09-25
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  type: MusicAlbum
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  type: MusicAlbum
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