August 17, 2026
What is EIP-7702 or EIP-2771, and why does EXTRA SAFE ask me to sign it once per network?
EXTRA SAFE uses two standards to settle gas in the token you're sending, depending on the network: EIP-7702 (Ethereum Improvement Proposal 7702) on five networks, and EIP-2771 on Avalanche C-Chain. Both let your wallet address — a standard EOA (Externally Owned Account) controlled by your private key — settle gas this way, without changing that address. The first time you use a given network, EXTRA SAFE asks for one signature to activate it.
EIP-7702 — for Ethereum, Base, Arbitrum, BNB Smart Chain, and Polygon
EIP-7702 shipped in Ethereum's Pectra update in May 2025. It lets your wallet address temporarily run smart-contract logic you authorize, then return to being a regular address — the same type, the same address, just a temporary change in what it's allowed to do.
Read the official EIP-7702 spec ↗
EIP-2771 — for Avalanche C-Chain
Avalanche C-Chain hasn't adopted EIP-7702 yet, so EXTRA SAFE uses a complementary, well-established standard there instead: EIP-2771. Rather than your address temporarily borrowing contract logic, a trusted forwarder contract relays your transaction while keeping your real signature attached to it — a different path to the same result: gas settles in the token you're sending.
Read the official EIP-2771 spec ↗
What UGTP uses this for
UGTP (Universal Gateway Transaction Platform), the technology behind EXTRA SAFE's transfers, uses these standards for one purpose: settling gas in the token you're sending, instead of every network requiring its own native coin.
Why once per network
Each network is its own separate chain — an authorization signed on one applies only to that network. That's why Ethereum, Base, Arbitrum, Optimism, and Polygon each need their own EIP-7702 signature, and Avalanche needs its own EIP-2771 signature.
Is it safe?
Yes. The signature activates one specific, audited contract for gas settlement. Your funds, your keys, and control of your wallet stay exactly where they've always been — on your device, under your signature, self-custodial.