Cryptocurrencies and networks

Fern can support conversions between cryptocurrencies and fiat currencies and crypto swaps for first-party conversions and third-party payments. This doc shares the latest cryptocurrencies and networks supported by Fern.

Supported networks

Network name
Chain ID
Native currency

Arbitrum One

42161 (0xa4b1)

ETH

Base

8453 (0x2105)

ETH

Ethereum Mainnet

1 (0x1)

ETH

OP Mainnet

10 (0xa)

ETH

Polygon Mainnet

137 (0x89)

POL

If you are interested in additional networks (L1s, L2s, L3s, etc.), please reach out to support@fernhq.com.

Cryptocurrencies

Fern can support currency conversion for several cryptocurrencies on each of the supported networks. Each transaction type has a different set of supported currencies.

Onramps

Fern supports onramps to Circle-issued USDC on the supported networks.

Offramps

Fern supports offramps from any native cryptocurrency and ERC-20 on the supported networks. The token must have sufficient DeFi liquidity when swapping with USDC with minimal slippage and price impact in order to be supported for offramps.

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