plain english, serious math
You get a list. The cryptography stays out of your way.
Open your Data trail and you see four things per row: the site, the date and
time, which details you shared, and a short proof reference. Field names only
— never the values. That's the whole experience, and if you never think about anything
underneath it, nothing is lost.
Underneath, each record is sealed with the same cryptography blockchains are built on:
every entry carries a fingerprint of the one before it, and every fifteen minutes the
end of that chain is checkpointed into a separately operated ledger — and
published. Anyone can write down today's checkpoint. If the history behind
it is ever altered, the checkpoint you wrote down stops matching, and you can prove it
changed — without our help and without our permission.
One disclosure, because a privacy company hiding this would be absurd: the ledger we
checkpoint into, Engrave,
is run by an affiliated company under common ownership. It is separate infrastructure, not
a separate interest — so the tamper-evidence above comes from checkpoints being
public, not from who operates them.
And the rules it all runs on are published openly as the
Share Protocol,
with a verifier anyone can download and run. A privacy company asking you to take its
word is doing the same trick as everyone else in a nicer font — so we published the
maths instead.
Watch the chain being built, live →
