# LetsSeal Prove files. Source: [Console review]() Website: [https://letsseal.org/]() Profile updated: 2026-10-16 Category: [Authentication]() ## Supported tech stack Research checked: 2026-10-11 ### Runs on - Browser (Runtime) ### Integrates with - HTTP API (Integration) Source: [Research source]() Documented compatibility; coverage may be incomplete. Written in describes implementation, not user-project language support. Document sealing platform offers a hosted browser app and API. ## Console’s review — 2026-07-30 Reviewed: 2026-07-30 Author: [David Mytton]() Citation: [This review]() ### What we like Built on an open standard to prove a file exists and is unaltered. Works via the web and through a CLI. Has a GitHub action. Can be self-hosted. Verification is through re-hashing and comparison, with a public transparency log. ### Tradeoffs Although you can verify offline, it still requires writing into a public transparency log (blockchain). This review reflects Console’s assessment at publication on 2026-07-30. Features and limitations may have changed since the review date. ## Is LetsSeal a fit? Based on [Console’s review published on 2026-07-30](). Summary updated: 2026-10-16 ### Who it’s for Developers who need to prove file existence and integrity should consider this tool ### Why consider it It allows verification of file existence and integrity through re-hashing and comparison ### Keep in mind It requires writing into a public transparency log, even for offline verification [Selection criteria]() · [About Console]() · [Browse tools]()