Monad, an Ethereum-compatible blockchain built to process transactions faster, is proposing a major change to how crypto wallets are secured, allowing users to replace lost or outdated keys without abandoning their existing address.
Monad was among 2025’s most hyped blockchain launches, after its developer raised $19 million in 2023 and another $225 million in a Paradigm-led round in 2024.
The new proposal would separate a wallet’s permanent address from the key used to control it. As of today, losing that key can permanently lock a user out, while moving to a stronger security system often means creating a new wallet and transferring everything over.
Quantum computers pose a long-term threat to crypto because sufficiently powerful machines could eventually break the digital signatures used to prove ownership of coins.
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Bitcoin developers are exploring quantum-resistant signature schemes and debating how to protect older coins whose public keys are already exposed, while Ethereum has made post-quantum security a formal research priority across wallets, staking and smart contracts.
Monad’s proposal takes a different approach at the account level — where users could replace today’s cryptography with a quantum-resistant scheme without changing their wallet address or moving their assets.
The network has grown to roughly $939 million of crypto locked across its decentralized-finance applications, according to DefiLlama, with about $732 million in stablecoins and $329 million of decentralized-exchange trading over the past 24 hours. Its MON token was up about 2% on Tuesday.
How Monad’s proposal works
Monad’s design would let users add, replace or retire the credentials that approve transactions while keeping the same address. Those credentials could include traditional crypto keys, passkeys used on phones and laptops, multiple signers or cryptography designed to resist future quantum computers.
It could also let users recover an account after losing a key without moving assets to a new address.
A user could, for example, set up an account where either their normal key works or two trusted people acting together can install a replacement if that key disappears.
Users could similarly turn an existing account into a multisignature wallet or upgrade it to a post-quantum security scheme without changing the address or moving their assets.
The proposal remains an early draft. Authors Kushal Babel and Jan Camenisch said the current version covers the broad design, while a detailed implementation specification still has to be written.