Yes, because all of the electronic signatures created by Universign include a timestamp, which provides formal evidence to the integrity of the document. This evidence is inserted into the PDF document. A timestamp guarantees the existence of a file on a given date and that it has not been modified bit-by-bit since this date. This cryptographic process guarantees the integrity of the document over time. This is a very important aspect, as, generally, disputes regarding a contractual document are primarily based on the content of the signed document (the warranty or benefit amount, a clause in the contract, etc), rather than the actual signing of the document.
Today, Universign is one of the few timestamping authorities that is both RGS (French General Security Database) qualified, ETSI TS 102 023 certified at a European level and recognised by Adobe Reader as a trusted authority. In other words, no other more successful platform currently exists that allows you to prove the integrity of a document in a sensitive legal context.