SealPact is more than a digital signature. As a cloud-based/blockchain platform accommodating large file sizes, SealPact is the only digital signature solution that allows architects and engineers to issue multi-level signatures with dynamic components, enabling design professionals to retain more control than ever before (invalidating documents after issuance for any reason of their choosing, seeing who accesses files after they are emailed & more). This technology is also patent pending. Engineers and architects can control signed or sealed deliverables by seeing who accesses files after they are emailed out, and having the ability to invalidate their document for any reason of choosing (revisions to documents or lack of payment from clients).