1, title: No.2, font is Founder Minor Song or bold, and the main content to be proved is generally used as the title. For example, "proof that X took bribes." Don't just write "proof materials" or "letter of proof" or "proof", because it will bring inconvenience to the other unit to find and use these materials in the future.

2. Text: No.3, font imitation of Song Dynasty. The true situation of the relevant personnel or events that need to be proved shall be clearly written. If it is evidence of investigation, it can also provide relevant investigation clues.

3. Signature: After the certification materials are written, the full name of the unit or individual providing the certification materials should be written at the lower right of the certification materials, and the certification date should be indicated.

4. Full text format: upper 3, lower 2.5, left 2.6 and right 2.6.

Extended data:

The following questions should be paid attention to when writing certification materials:

1, the personnel who issue the certification materials shall be highly responsible and conscientious to the parties and witnesses, adhere to the principle of seeking truth from facts, and shall not issue certificates that are inconsistent with the facts, let alone provide false certificates.

2. The words used in the certification materials shall be clear, unambiguous or ambiguous, and words such as "probably", "possibly" and "based on analysis" shall not be used.

3. All certification materials shall be reviewed by the person in charge of the unit and stamped with the official seal. The certification materials issued by individuals should be signed and sealed by themselves (or have fingerprints), and the unit should indicate the position and political status of the witness on the certification materials (generally, such judgmental words as "reliable" and "for reference only" are not added).