Supported Chains

Portfolio wallet network coverage, address formats, and sandbox assets.

Portfolio Wallet network support depends on the stablecoin and operation. Use the network-specific address returned by your wallet and the live yield-source catalog for eligible positions.

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Production

Stablecoin	Deposits and withdrawals	Allocation group
USDC	Arbitrum, Base, Ethereum, Polygon, Solana, Stellar, Tempo (USDC.e)	usdc
USDT	Ethereum	usdt
USDT	TRON	usdt:tron

USDC can move between supported networks. On Tempo, send and receive USDC.e using token: "usdc" in the API. Ethereum USDT and TRON USDT each stay on their own network. Ground does not convert between stablecoins. See Allocation groups for strategy compatibility.

If a network is unsupported for the requested operation, the API returns a 400 error with details.

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Network keys and address formats

New wallets prepare supported EVM, Solana, TRON, and Stellar deposit addresses automatically. Use an address only after it appears in depositAddresses. See Address readiness and Power Yield for Stellar Balances.

Network	Production key	Sandbox key	Address format
Arbitrum	arbitrum	—	EVM hexadecimal (0x…)
Base	base	—	EVM hexadecimal (0x…)
Ethereum	ethereum	ethereum_sepolia	EVM hexadecimal (0x…)
Polygon	polygon	—	EVM hexadecimal (0x…)
Solana	solana	solana_devnet	Base58 public key
Stellar	stellar	stellar_testnet	Stellar G-address
Tempo	tempo	—	EVM hexadecimal (0x…)
TRON	tron	tron_shasta	Checksummed base58 address

Use the same network key for depositAddresses and withdrawal destinationChain. Tempo is production-only; its returned address can differ from the wallet’s Ethereum address. For example, a sandbox Solana deposit uses depositAddresses.solana_devnet, and a sandbox Stellar withdrawal uses destinationChain: "stellar_testnet". The address book documents its supported chains separately.

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Sandbox

Sandbox assets are valueless test tokens. Use the supported token deployment for the selected network.

Network	Stablecoin	Test funding
Ethereum Sepolia (ethereum_sepolia)	USDC	Circle faucet
Ethereum Sepolia (ethereum_sepolia)	Ground mock USDT	Request sandbox USDT, then poll the request
Solana Devnet (solana_devnet)	USDC	Circle faucet
Stellar Testnet (stellar_testnet)	USDC	Circle faucet
TRON Shasta (tron_shasta)	Supported Shasta test USDT	Contact Ground for test funding

Production keys use canonical network names; sandbox keys identify the testnet explicitly. TRON sandbox uses Shasta. Its JustLend source is a simulated lending market; see JustLend V1 USDT for simulation limits.

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Transaction resources and delivery timing

Ground arranges the transaction resources needed for Ground-managed operations. You fund the supported stablecoin and use the API to allocate or withdraw it.

Network	Transaction resources
EVM	Native gas funding or transaction sponsorship
Solana	SOL funding or a Ground fee payer, depending on the operation
Stellar	Automatic account activation and USDC trustline setup
TRON	Account activation, energy, and bandwidth funding when an outgoing transaction needs them

Customers do not need to acquire or stake TRX for Ground-managed TRON API flows.

Cross-network USDC withdrawals can take longer than same-network transfers. Use the withdrawal preview for destination-specific timing and track the withdrawal until completed.