Networks and assets

The chains and coins you can accept, their identifiers, and how long confirmation takes.

An asset is a coin on a network, written as a network id and a token: native for the network’s own coin (ETH, SOL, BTC, …), otherwise the token’s contract address (or mint, on Solana). You pass assets in allowedAssets when creating a link.

Staging (testnets)

Network id	Chain	Assets (token)	Confirmations	Time to settle
ethereum_sepolia	Ethereum Sepolia	ETH (native), USDC (0x1c7d4b196cb0c7b01d743fbc6116a902379c7238)	12	2–3 min
optimism_sepolia	OP Sepolia	ETH (native), USDC (0x5fd84259d66cd46123540766be93dfe6d43130d7)	60	~2 min
arbitrum_sepolia	Arbitrum Sepolia	ETH (native), USDC (0x75faf114eafb1bdbe2f0316df893fd58ce46aa4d)	240	~1 min
polygon_amoy	Polygon Amoy	POL (native), USDC (0x41e94eb019c0762f9bfcf9fb1e58725bfb0e7582)	64	2–3 min
bsc_testnet	BNB Chain testnet	tBNB (native), USDT (0x337610d27c682e347c9cd60bd4b3b107c9d34ddd)	5	< 1 min
tron_nile	Tron Nile	TRX (native), USDT (TXYZopYRdj2D9XRtbG411XZZ3kM5VkAeBf)	20	~1 min
solana_devnet	Solana Devnet	SOL (native), USDC (4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU)	finalized	< 1 min
bitcoin_signet	Bitcoin Signet	BTC (native)	1	~10 min

USDC on the EVM testnets and Solana is Circle’s test token (faucet.circle.com).

Production (mainnets)

Coming soon: ethereum_mainnet, arbitrum_mainnet, optimism_mainnet, polygon_mainnet, bnb_mainnet, tron_mainnet, solana_mainnet and bitcoin_mainnet, each with its native coin and USDT/USDC where available.

Choosing assets

• List only what you want to receive. The payer chooses among allowedAssets; an asset that isn’t enabled on the platform is rejected with PaymentLink.AssetNotSupported.
• Stablecoins avoid price moves. The quote locks a coin amount for the payment window; with USDC or USDT the value you receive doesn’t drift with the market.
• Mind the confirmation time. Bitcoin takes about ten minutes per block; fast chains settle in a minute or two.