Every document gets its own tamper-proof seal and a permanent audit record. No branded envelopes, no chase emails, no theatre. Just proof that holds up when it matters.
Draw, type or upload. 100 handwriting fonts across formal, casual, bold and modern. Download the PNG in seconds, save it to auto-fill every SignSecure flow.
Get startedUpload a PDF, add signers in order, each verified by email code. The executed document is emailed to all parties, then deleted from our servers.
Learn moreBranded invoices with debt acknowledgement built in. No dispute within 3 days counts as formal acknowledgement. 30 currencies with live rates.
Learn moreAny SignSecure PDF. We compare its fingerprint to our tamper-proof record and show you exactly who signed and when.
Learn moreDrop in files up to 5 GB. Recipients open a branded link — every download is logged, and the transfer expires on your schedule.
Learn moreZero-knowledge cloud storage for the documents you can't afford to lose. Only you hold the key — not us, not anyone else. Sync, share, and prove custody.
Learn moreThe intellectual sparring partner. Debate a bold claim through five stages — coherence, literature, stress-test, necessity, confirmed position — then take it to a paper.
Open in new tabThe governance layer for teams shipping AI into legal, privacy and security minefields. A repeatable methodology wrapped around the eight domains regulators actually care about.
Open in new tabA thinking partner that provokes your reasoning and helps you build arguments that are genuinely yours — with a full audit trail proving the work is AI-assisted, not AI-generated.
Open in new tab"A signature is a promise. A signature you can verify is a contract."
Countersigned in a coffee shop. When HR asked for proof of authenticity three months later, one click returned the full audit chain.
Client claimed they never received it. The record showed open, read and acknowledge timestamps — with an IP-region match.
Sent as one manifest, each with its own seal. Verifying the batch took a single check.
The English Parliament required certain contracts — land sales, long agreements — to be in writing and signed. Three and a half centuries later, the principle still runs beneath every enforceable agreement.
Rivest, Shamir and Adleman published the maths that made it possible to prove authorship without ever sharing a secret. Every modern digital signature descends from that idea.
The European regulation that gave qualified electronic signatures the same standing as wet ink. Properly certified proof is now evidence a court will accept without argument.
The append-only, hash-chained record behind modern audit trails. Change one entry and every entry above it shouts.
Independent, free-to-explore data products. Crisis trackers, intelligence analysis, and a growing archive of curious datasets.
The only public structured dataset of every force majeure declaration and industry disruption from the 2026 Iran War.
Every significant Truth Social and X post during the war, mapped by time, platform, and Brent crude consequence.
Interactive Tableau workbooks on curious datasets — Nigerian fuel prices across presidencies, and a growing archive.
Ideas that grew big enough to earn their own site. Each lab is a separate product with its own site — click through to try it.
Write down the decision, the reasoning, and the bet — so you can grade yourself honestly when the outcome lands.
A benchmark you set once, then measure every future thing against. Personal standards, made visible.
Sharpen your ideas against genuine challenge. An AI built to push back, not to agree with you.
Any document. Any recipient. A verifiable receipt on every line. Free while we're in beta.