Immutable · On-device · Verifiable
Notes that can't
be changed.
Ever.
Every note is hashed, mined, and sealed to a blockchain the moment you finish it. The one on your device is yours. The optional master chain proves it to anyone.
On-device chain
Proof-of-work
Verifiable
BLOCK #013
2026·07·02 14:22
Series A term sheet, redlined
009af23b6c1a1f83d09c8f7b21e4a5c1e9
BLOCK #012
2026·07·02 09:11
Lab notebook — kinetics run 04
00c74b1a83e2f5b4a6d81842aefc78b12
BLOCK #011
MINING · nonce 44190
NDA — Palo Alto counter‑party
00b19c542a76f19d4b2c8351bd76a4a3d
Local chain
Yours by default.
Every note is mined on-device at proof-of-work difficulty 2. The chain lives on your phone; free forever.
Master chain
Anchor to make it public.
Premium anchors your local hash into a server chain at difficulty 4, so anyone can independently verify the seal.
Proof URLs
Share the receipt, not the note.
A single shareable URL renders a public certificate. The note text stays yours unless you show it.