Proof of claim submission to liquidator requires records or documents establishing the claim, including bank statements or court orders. Regulation 19 requires a stakeholder (other than under Regulations 16-18) to submit proof of claim to the liquidator in person, by post, or electronically using Form F of Schedule I. The existence of the claim may be proved by information utility records or other relevant documents, including documentary evidence of a demand for payment or bank statements with an affidavit, documentary or electronic evidence of shareholding, or a court/tribunal order adjudicating non payment.