{
  "url": "https://openlegislation.uk/eu-regulation-2004-65/annex/division-section+a/division-4",
  "json_url": "https://openlegislation.uk/eu-regulation-2004-65/annex/division-section+a/division-4.json",
  "legislation": "eur/2004/65",
  "legislation_title": "Commission Regulation (EC) No 65/2004 of 14 January 2004 establishing a system for the development and assignment of unique identifiers for genetically modified organisms",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2004-65",
  "path": "annex/division/section+a/division/4",
  "kind": "division",
  "number": "4",
  "heading": "Verification component",
  "text": "The final digit of the unique identifier is for verification, which shall be separated from the rest of the unique identifier digits by a dash, such as:\nor\nThe verification digit is intended to reduce errors by ensuring the integrity of the alphanumeric identifier, entered by the users of the database.\nThe rule to calculate the verification digit is as follows. The verification digit is made up of a single numerical digit. It is calculated by adding together the numerical values of each of the alphanumerical digits in the unique identifier. The numerical value of each of the digits is fromto 9 for the numerical digits (to 9) and 1 to 26 for the alphabetical digits (A to Z) (see sections 5 and 6). The total sum, if made up of several numerical digits, will be further calculated by adding the remaining digits together using the same rule, in an iterative process, until the final sum is a single numerical digit.\nFor example, the verification digit for the code CED-AB891 is calculated as follows:\nstep one:\n3 + 5 + 4 + 1 + 2 + 8 + 9 + 1 = 33;\nstep two:\n3 + 3 = 6; therefore the verification digit is 6.\nTherefore, the final unique identifier then becomes - CED-AB891-6.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2004/65/annex/division/section+a/division/4",
    "retrieved_at": "2026-11-01T14:55:45.936615+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}