Public beta · Avalanche Fuji test network
Pay and get paid in USDC with no signal at all, by QR code or Bluetooth. The receiver can see on the spot how safe the payment is, and it settles on Avalanche as soon as any phone reconnects.
PortageBuilt on open, verifiable pieces
Why Portage
Markets, clinics and bus stages run on cash because the signal is patchy, power cuts take towers down, and sometimes the internet is switched off. A digital wallet that needs a connection at the moment of payment fails exactly when people need it.
Portage separates paying from settling. The payment is signed on the phone and handed over directly. Settlement waits for the first phone, payer or receiver, that finds a connection. Between the two, the money is carried, like a boat carried over land between two waters.
A dhow under a stone bridge, carrying a coin. A portage is the stretch where a boat is carried over land between two waters.
The payer scans it and confirms with a fingerprint. The signed payment goes back by QR or Bluetooth.
Portage never calls a payment settled early. It says pending until the chain's finalized block confirms it.
How it works
Scan the code
Pay 12.00 USDC?
Signed on this phone
Sent
Pending until the network confirms
Show to the payer
Received · pending
Settle by Friday 18:00
Settled on Avalanche
Final at the chain's finalized block
Setting up
Install the app, keep your recovery words safe, and move some USDC to your offline balance. Then pay anywhere, signal or not.
The app makes your keys inside the phone's secure hardware. Write your 12 recovery words on paper: only you can restore them.
Move USDC from your main balance into your own vault. That is the money you can spend with no network.
Scan a code, confirm with your fingerprint, show the payment. It settles when either phone reconnects.
Know what you're accepting
An offline payment can't be checked against the chain at that moment. So Portage doesn't hide the risk: each payment carries a level, in words and colour, and the receiver's own limits decide what they accept.
Paid from the sender's main balance. It settles only if the money is still there, so small amounts from people you know.
Paid from money locked in the sender's offline vault. The vault can't be emptied quickly, so the receiver has time to settle.
Vault-backed, plus a bond. If the sender's key is ever used to cheat, the bond pays back those cheated.
Money set aside in advance for one receiver, such as a shop. Only that receiver can be paid from it, in full, until it ends.
Simple
Your keys, your vault, and payments that wait for the network instead of failing without it.
Download for AndroidSafety by design
No company holds your money. The vault contract has no owner, no admin and no upgrade switch. Only your key can move your funds.
Payment keys are made inside the phone's secure hardware and unlocked with your fingerprint or PIN. They never leave the device.
The vault limits each payment and only releases money after a waiting period you choose. Cheating is provable on chain and punished from the cheater's bond.
Portage never calls a payment settled early. It says pending until the chain's finalized block confirms it.
The app, contracts and services are open source. The contracts' code is published on the block explorer, and test vectors keep every implementation in agreement.
You hold only USDC. Relayers pay the network fee and take a small, fixed fee in USDC. If every relayer is down, rescue mode lets you act on your own.
For programmes
Distribute stablecoins to people who live with patchy coverage, and let them spend at local shops without waiting for a signal. Reserve money for registered vendors so those payments are always good, and reconcile everything from public chain data.
Field rehearsal plan
Android beta
Runs on the Avalanche Fuji test network, with test USDC that has no value. Android 10 or later.
Questions
No. Your money is in your own wallet and your own vault contract. There is no admin key, no upgrade and no pooled account. Portage the company cannot move, freeze or recover your funds. Only your recovery words can restore your wallet.
The payer's phone signs the payment and hands it to the receiver as a QR code or over Bluetooth. The receiver's phone checks the signature and the sender's vault offline, then keeps the payment until a connection appears and settles it on Avalanche.
Each payment says how safe it is. Vault-backed money can't be withdrawn quickly, so receivers have time to settle. Double spending is provable on chain: the cheater's bond is taken and pays back those cheated. Reserved payments can't be double spent at all.
A small fixed fee in USDC per settled payment, paid to whoever submits it to the chain. You never need a separate gas token. The current beta uses test USDC, so nothing costs real money.
Not yet. The beta runs only on the Fuji test network. Real money comes after an independent audit of the contracts and a field rehearsal.
Restore your wallet on a new phone with your recovery words. The app finds your vault on chain and moves it to a new payment key on the new phone.