The land keeps its own books.
Brother Nature keeps the record of the land on the farmer’s own phone, and it is being built to work with no signal. The first part you can use today is secure file sharing.
Send a file only the right people can open
Drop in a file. Your browser locks it with a passphrase it makes for you. Email the locked file however you like, and send the passphrase another way, by text or a call. The person you send it to opens it on this site. They don’t need an account.
Encrypted on your device with AES-256, which NIST rates as resistant to quantum computers.
Straight answers
Who holds the keys?
You do. The passphrase is made on your device and never comes to us. With an account, your key stays in your own vault, locked with your password.
What leaves your device?
Only the locked file, as an attachment in your own email. Nothing is uploaded to Carbon Capture Shield. Anyone holding the file can see its name and size, but not its contents.
What can Carbon Capture Shield read?
Nothing. We never receive the file or the passphrase.
What if Carbon Capture Shield stops existing?
Save the page. It runs entirely in your browser, so a saved copy keeps opening your files without us.
An open protocol
The protocol under Brother Nature, SSP², is open. Its specification and test vectors are published, so anyone can check an implementation against the same bytes. Read the SSP² specification on Zenodo, and check its signatures yourself.
What comes next
The farmer’s record of the land is in development and not released yet. When parts of it ship, they’ll appear here with the same four answers.
Land as Ledger
Provenance grown from the ground up.