GoKawiilSEAL is the open standard for proving any file is real. One sealed artifact, one way to check it, verifiable by anyone, forever. Seal with any conforming tool, and anyone can verify it with any other.
Let's Seal created that standard, SEAL, Sealed Evidence Anchored to a Ledger, and runs the free network and reference implementation that issues and verifies it. The standard is the backbone. Everything in this repository is built on it, and given away.
It is the Let's Encrypt of document proof. Let's Encrypt made paid TLS certificates obsolete. Let's Seal does the same for paid document seals, and like Let's Encrypt it is free, open, and run as a public-benefit project of a foundation, not a startup.
Authenticity is infrastructure. It shouldn't be for rent.
Use it, free
Three ways to seal, all free:
The hosted web app , app.letsseal.org. Free for anyone, in the browser, nothing to install. Seal a file, send documents out for signature (remote, in person, or with no email at all), and issue branded certificates and credentials.
, app.letsseal.org. Free for anyone, in the browser, nothing to install. Seal a file, send documents out for signature (remote, in person, or with no email at all), and issue branded certificates and credentials. The command line and API. sealbot for the terminal, plus a REST API and SDKs to build sealing into your own systems.
for the terminal, plus a REST API and SDKs to build sealing into your own systems. Self-hosted. Run the whole engine yourself, under your own certificate authority.
Verifying is always free and never needs an account, at verify.letsseal.org or offline on your own machine.
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