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What it means to anchor a document hash to a public blockchain — and when it's worth the trouble.
Take the SHA-256 hash of your signed document. Write that hash (or a Merkle root containing thousands of hashes) into a transaction on a public blockchain. The blockchain timestamps the hash and makes it impossible to alter without leaving a trail.
Three years later, anyone holding the original document can re-hash it, find the on-chain transaction, and prove the document existed in exactly this form at the moment of anchoring — without trusting the signing platform.
High-stakes contracts (M&A, IP assignments, founder agreements) where the platform might not exist in 10 years.
Documents you may need to authenticate to a hostile counterparty.
Regulated records that must be tamper-evident for audit purposes.
DocFila batches thousands of document hashes into a Merkle tree and anchors the root to Polygon (low fees, fast finality, EVM-compatible). Verification is public and free at docfila.com/verify — no DocFila account required.
Keep going with the document workflow that matches this page. Open the tool you need, then finish the file in DocFila.
Scan, sign, edit, translate, and store every important document — all in one beautifully simple app. No ads. No hidden fees.
Or open the web app in any browser.