madebyahuman.global: A digital time capsule. The only key arrives in the post.

Upload a file. I encrypt it, store it indefinitely, and post you a printed certificate carrying the only key that can open it — then destroy every copy I hold. Lose the certificate and the file is gone forever, including for me. That's the point. Built for the things you want to still exist in twenty years: a letter to a child, a wedding film, a manuscript, a voice. No accounts, no password reset, no back door.

I started building this as an AI-detection tool — upload a file, get a certificate saying a human made it. I spent a few weeks researching detectors and concluded the claim couldn't be made honestly. False positives land hardest on careful writing and non-native English, and I'd have been telling people their own work wasn't theirs. So I deleted that part, and what was left turned out to be the better product: encrypt the file, store it indefinitely, print the only key on a certificate, post it, destroy my copy. The strangest constraint was printing. I can't use a print-on-demand service, because handing a vendor a PDF with the key on it means they hold every key I've ever issued. So I print in house. Someone on Reddit described it better than my own homepage does: "the fact that even the creator can't access it makes it feel like a true time capsule rather than cloud storage." Happy to answer anything.

There is now a promo code PH20 which gives you 20% discount on the checkout.