Fluid USDC wallet

What is Fluid USDC (FUSDC)?

Think of FUSDC as USDC with a jacket on. Fluidity's contract takes USDC one for one and hands back the fluid version, and the swap runs the other way whenever you want plain USDC again - the ratio is not a market rate, it is the wrapper's own redemption. While wrapped, the underlying dollars are lent out on money markets, and the distribution mechanism Fluidity runs is tied to transactions in the wrapped token, so this is an asset designed to be spent and sent rather than left still.

Three things a holder trips over. The wrapped token is chain-local: the version on one network is a different token from the version on another, and there is no direct hop between them - you unwrap, move the USDC, wrap again. It is also not interchangeable with plain USDC inside other applications; a contract that accepts USDC will usually not accept the fluid form. And the mechanics differ by chain: on Solana it behaves as a standard SPL token with its own token account and SOL for fees, while on the EVM side it is an ERC-20 and ETH pays the gas.

Supported networks in Tangem (3): Arbitrum One, Ethereum, Solana. Each is tracked as its own balance, and the network a transfer will leave on is shown before the card is tapped to sign it, which is worth a look when one ticker exists in several places at once. Keeping the wrapped and the unwrapped dollars in one wallet that separates them by chain stops the wrapping step from becoming guesswork.