D4Sign is an electronic document signature platform that ensures the integrity and authenticity of electronic signatures. The platform allows costumers to submit documents for signature in just a few clicks: just upload the document and inform which signatures you are required to subscribe to. Simple, fast and legally valid. D4Sign guarantees the integrity, authenticity and non-repudiation of electronic documents by applying numerous procedures throughout the subscription process. Any business or professional can modernize its document signing process using D4Sign, whether it's a company that has a demand for more than 10,000 contracts a month, or even a liberal professional who sends only 5 documents per month.