Don't trust us — break a real on-chain record. Every check below runs in your browser; this page only holds the artifacts, never a pass/fail verdict. Edit the evidence and watch the proof refute it.
What is this?
FF — For Future / Falsifiable Finance turns a financial
valuation claim into something you can disprove, not
something you have to believe. Each record is signed by the issuer, batched into a Merkle
tree, and stamped into the Bitcoin blockchain so its date
can't be moved. This page lets you check one for yourself.
Think of a tamper-evident seal on a parcel — anyone can see
if it's been opened. FF puts that seal on money claims. Two things make it strong: it's made
of maths (it can't be faked, only visibly broken), and the
date is written into Bitcoin (so it can't be back-dated).
How to read the five checks ↓
Pick a real record, then hit ⚡ Tamper one character. Six
independent checks run in your browser: the issuer's
Ed25519 signature, its
ML-DSA-65 post-quantum companion, its place in the anchored
Merkle batch, the
OpenTimestamps proof, that the timestamp commits to
this exact batch, and the
Bitcoin block. Tamper the evidence and the signature +
Merkle checks fail instantly — the maths catches it. Reset, and it's VERIFIED again. This
page never hands you a yes/no; it hands you the artifacts and you check them.
record id —
issuer — · signature —
fetching the attested verdict from IPFS…
🔑Issuer signatureEd25519 — signed by the pinned FF issuer key—
🛡ML-DSA-65 (post-quantum)FIPS 204 companion signature — resistant to quantum computers—
🌳In the anchored Merkle batchRFC-6962 inclusion proof up to the published root—
🎯Anchors this exact batchthe timestamp commits to this record set's root—
₿Bitcoin blockun-backdateable — the part nobody can fake—
verifying…
Sepolia is a public test network — these records are publicly checkable but not economically final. The Bitcoin anchor below is the real-immutability layer: a block height nobody can move or forge.