DocuChain

**DocuChain** is a free online electronic signature service that makes it fast and easy to sign documents in all popular formats—without the need to create an account, install software, or pay subscription fees. Whether you're signing a PDF, DOCX, XLSX, or another common file type, DocuChain allows you to complete the process in just a few clicks, directly from your browser and on any device. What sets DocuChain apart is its use of blockchain technology. Each signature is recorded on a secure, decentralized ledger, creating a unique, tamper-evident record that cannot be modified or erased. This means that every time you sign a document through DocuChain, the action is permanently logged with a digital fingerprint, ensuring integrity and transparency. If anyone tries to alter the signed document later, the system will immediately detect the change and mark the file as invalid. Using DocuChain is simple. You upload your document, place your signature where needed, and download the signed file—all within seconds. There is no registration process, no need to verify your email, and no waiting period. It’s a completely streamlined experience designed for convenience and speed. DocuChain is ideal for individuals and businesses who need to sign contracts, agreements, forms, or any other document requiring a legally binding electronic signature. Because it’s fully web-based and mobile-friendly, you can sign from anywhere—your office, your home, or on the go—without being tied to a specific software platform or app. It’s perfect for remote teams, freelancers, HR departments, legal professionals, and anyone else who regularly handles documents that need signing.