Prove a fact about you without showing your papers
Self reads your passport or ID chip on your phone and proves one fact, like age or nationality, with a zero knowledge proof.
- 10 minutes
- 3 steps
- Free
- easy
Tap your passport to your phone and prove you are over 18 without showing your name.
Chapter 1 · The wall
The wall you hit
Apps ask for your full passport. Your phone can prove one fact instead.
Chapter 2 · The power
What changes now
Self reads your passport or ID chip on your phone and proves one fact, like age or nationality, with a zero knowledge proof.
Chapter 3 · Do it
Do it yourself
- Install the Self app on a phone with NFC.
- Scan the chip in your passport or ID card.
- Share only the fact an app asks for, nothing else.
- 10 min
- Free
- easy
Wallet or sign-in will not open in here? Open Self in a new tab ↗
Chapter 4 · Prove it
Prove it worked
An app accepts your proof without ever seeing your document.
Chapter 5 · Next star
Your next star
- Own · 5 min · FreeMint your own did:key identity in your browserGenerate an Ed25519 did:key locally, back it up under your own passphrase, and sign messages with it; the key never leaves the tab.Go to this star →
- Own · 10 min · The protocol is free; you pay network gas, usually a fraction of a cent on Base and other L2sGive or get a work reference that lives onchainThe Ethereum Attestation Service lets anyone sign a public statement about a wallet, such as 'delivered this project', that anyone can verify later without asking the signer.Go to this star →
Chapter 6 · Build
Build what is missing
A job board that accepts Self proofs plus signed references from past colleagues.
Who could build it Displaced workers who still carry an ID chip.
Questions
How long does it take to prove a fact about you without showing your papers?
About 10 minutes, in 3 steps. The first step is: Install the Self app on a phone with NFC.
What does it cost?
Free. Start with the free parts, and never put in more than you can afford to lose.
Do I need to be technical?
It is rated easy. Self reads your passport or ID chip on your phone and proves one fact, like age or nationality, with a zero knowledge proof.
How do I know it worked?
An app accepts your proof without ever seeing your document.