{
 "id": "zfo-proof-of-delivery-file",
 "name": "ZFO (Proof of Delivery) File",
 "category": "archive",
 "identifiers": {
  "extensions": [
   "zfo"
  ],
  "mime": [
   "application/vnd.software602.filler.form-xml-zip"
  ],
  "puid": [
   "fmt/1245"
  ],
  "wikidata": [
   "Q83795552"
  ],
  "signatures": [
   {
    "name": "ZFO (Proof of Delivery) File",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "max_offset": 20500,
      "pattern": "687474703a2f2f697364732e637a656368706f696e742e637a2f7632302f64656c6976657279"
     }
    ]
   }
  ],
  "priority_over": [
   "fmt/670"
  ]
 },
 "status": "unknown",
 "summary": "This variant of ZFO file is container for proof of delivery of data mailbox messages provided by Česká pošta, s.p. in three versions: 1. proof of delivery; 2. confirmation of delivery; 3. delivery failure. ZFO file is a ZIP archive file (PKCS #7 Cryptographic Message File) composing of the layout structure using XML elements. The whole structure is always embedded into a digital signature represented by XML elements of the XML Signature standard.",
 "tools": [
  {
   "name": "602PC Suite",
   "url": "http://www.602.cz/602pc_suite",
   "reads": false,
   "writes": true
  }
 ],
 "projects": [
  {
   "name": "PRONOM fmt/1245",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/1245",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q83795552",
   "url": "https://www.wikidata.org/wiki/Q83795552",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}