Portuna adds the tooling custody platforms keep for their own customers to the custody, addresses and accounting you already run — starting with gasless sweeps. Your keys stay with you, funds move only to your addresses, and you pay only for operations that succeed.
Added by Portuna
Stays as it is
Funds move only to addresses you own. Nothing to migrate.
Principles
They are our promise to you and the filter for every idea. A product that would break one of them doesn't ship.
We never create or hold the keys to your addresses. You sign in your own HSM, KMS or MPC; we never see a key.
To an address written into an immutable contract, or with your signature on a specific operation. Anyone can check the code, and it has no admin keys.
You pay only for operations that succeed, priced against a published benchmark you can check. Our fee never makes an operation cost more than it does you today.
Products
Sweep deposit addresses into your own hot wallet without topping them up with gas. Each address signs one EIP-7702 authorization; then up to 300 deposits go in one transaction, paid from your gas wallet. Ethereum and BSC.
Who it's for
A permanent deposit address for every user, and users who deposit again and again — in iGaming, forex and P2P. Repeat deposits are where sweeps save the most.
An address per invoice or from a pool. Pooled addresses are swept again and again, and BSC comes with no service fee.
Large volumes across networks, and a security review before any code touches a wallet: open bytecode, immutable contracts and a verifier you run yourself.
All you need is custody that can sign a raw hash — an HSM, KMS or MPC. That's how a deposit address signs its one-time authorization.
Security
You shouldn't have to take our word for where your money goes. Everything that moves it is small, verifiable and unchangeable.
Read the security modelWe never hold the keys to your addresses or the funds on them. Funds go straight from your deposit addresses to your hot wallet, inside one transaction.
No owner, no upgrades, no switch to flip. The only possible destination is written into the code.
Contract addresses derive from open bytecode. verify-delegate checks yours on-chain before a single authorization is signed.
Gas wallet keys live in a separate signing service with a fixed list of contracts, gas caps and a daily budget.
Only testnets are live: no real funds are moved yet.
The name
Portus was the harbour Rome built beside Ostia when the old river port could no longer take the big grain ships. Ostia stayed where it was; Rome gained a harbour. That is how we work: we add capacity next to the processing you already run, instead of asking you to move.
Portunus, the Roman god of harbours, carried a key as his emblem. With us, the keys stay with you.
Portuna Sweep is self-serve on Sepolia and BSC testnet. Mainnet access opens soon — tell us about your volumes and we'll get you ready.