Web3Multi-chainwallet

Embedded wallets inside a production fintech app: a wallet across Ethereum, Solana, Base and BNB created in-app in seconds, with no seed phrase to write down. Token discovery, buy and sell, and cross-chain deposits that settle in under twenty seconds.

Self-custody is the part of crypto that loses ordinary users. A seed phrase is a support burden and an abandonment point, gas is a second currency nobody asked to hold, and four chains means four sets of addresses, fees and confirmation times to hide behind one balance. None of that can be simplified by shipping a worse wallet — the money is real and the app is a licensed fintech product.

The wallet is created for the user rather than by them, so there is no phrase to lose, and transactions are sponsored so gas never appears as a thing to fund. wagmi and viem carry the EVM chains behind one interface and Dynamic handles the embedded key material; account abstraction is what makes the sponsorship and the recovery possible rather than a compromise. Cross-chain deposits go through CCTP v2 so USDC moves natively instead of being wrapped.

Four chains behind a single balance, no seed phrase, no gas, and an average of $50k a day moving through it. The wallet reads as a feature of the app rather than as a crypto product bolted to the side of one.