Iron Cross
type: MusicGroup
genre: hardcore punk
genre: speed metal
genre: thrash metal
description: thumb|220px|right|Standard, most basic form of the Iron Cross The Iron Cross (, , abbreviated EK) was a military decoration in the Kingdom of Prussia, the German Empire (1871–1918), and Nazi Germany
popularity: 5
followers: 1037
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa6aefd7931b64b607ca0decc53628f09556fd0c55cc013af82ad35a05ef3add
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c06c900e-819e-4269-b031-063ed15a546d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c06c900e-819e-4269-b031-063ed15a546d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c06c900e-819e-4269-b031-063ed15a546d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaa6aefd7931b64b607ca0decc53628f09556fd0c55cc013af82ad35a05ef3add","name":"Iron Cross","registered_at":"2026-06-20T19:19:42Z","symbol":"NIM1688435","token_address":"0x7fe8ffcf3bea7a4663bb63469766d4fed45cc5cc","type":"artist","uuid":"c06c900e-819e-4269-b031-063ed15a546d"}
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 0xaa6aefd7931b64b607ca0decc53628f09556fd0c55cc013af82ad35a05ef3add. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c06c900e-819e-4269-b031-063ed15a546d.json and https://artists.proofprofile.net/proofs/artist/c06c900e-819e-4269-b031-063ed15a546d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xaa6aefd7931b64b607ca0decc53628f09556fd0c55cc013af82ad35a05ef3add","name":"Iron Cross","registered_at":"2026-06-20T19:19:42Z","symbol":"NIM1688435","token_address":"0x7fe8ffcf3bea7a4663bb63469766d4fed45cc5cc","type":"artist","uuid":"c06c900e-819e-4269-b031-063ed15a546d"}
album: Flex Your Head
  type: MusicAlbum
  date published: 1982
album: Flex Your Head
  type: MusicAlbum
  date published: 1982-01-01
album: Church And State (20th Anniversary Remaster)
  type: MusicAlbum
  date published: 1988
album: Est 1980
  type: MusicAlbum
  date published: 2012-03-06
album: Est. 1980
  type: MusicAlbum
  date published: 2012-06-06
album: Blood & Honor
  type: MusicAlbum
  date published: 2015-09-26