SignHash is a lightweight web tool designed to prove that a document existed at a specific point in time and hasn’t been altered since. Rather than functioning as a traditional e-signature platform, it focuses on document integrity by creating a cryptographic hash of a file and anchoring that fingerprint in a tamper-evident record, often using blockchain technology. The result is a verifiable way to demonstrate authenticity without storing or exposing the document itself.
Backed by the Blockchain
One of SignHash’s biggest strengths is its simplicity and privacy-first approach. Because only a hash of the document is recorded, the original file never needs to be uploaded or retained, which is appealing for sensitive or proprietary materials. This makes it especially useful for creators, developers, and professionals who want proof of authorship, version history, or chain of custody without relying on centralized storage. Any future change to the document would immediately break the hash match, making tampering easy to detect.
That said, SignHash isn’t meant to replace legal notarization or full electronic signature platforms. It doesn’t verify signer identity or capture intent in the way tools like DocuSign do, and its legal weight depends on how courts or jurisdictions interpret cryptographic timestamping. It works best as a supporting layer of proof rather than a complete signing or contract workflow.
The best part? The cost. SignHash doesn’t rope you into subscriptions or contracts. You pay per document, and it’s less than $5. Imagine getting full legal control over a document for less than $5?
SignHash is (Probably) The Future
Overall, SignHash fills a specific but valuable niche. If your goal is to prove that a document hasn’t changed since a certain moment—especially while keeping the contents private—it’s a clean, focused solution. For businesses that need formal signatures, identity verification, or multi-party approval flows, it’s better seen as a complement to traditional e-signature tools rather than a replacement.
