Trustlines

On Stellar, accounts must explicitly opt in to hold and use assets. This opt-in is called a trustline.

Trustlines are how Stellar accounts opt in to issued assets.

If an account has no trustline, it cannot hold that asset.

Each trustline increases the account’s minimum balance by 0.5 XLM (base reserve).

What is a trustline?

• A trustline links an account to an asset issuer.

• It allows the account to receive, hold, and send that asset.

• It includes a limit (max balance you accept).

• It tracks balance and liabilities (like open offers).

Why trustlines matter for escrows

Trustless Work escrows can use any Stellar-issued asset.

Every participant must be able to hold that asset.

If a signer can’t hold the escrow asset, their step may fail. Set trustlines before testing any escrow flow.

Issuer addresses (USDC / EURC)

Use these issuer addresses when you configure the escrow trustline.

USDC

Testnet issuer

GBBD47IF6LWK7P7MDEVSCWR7DPUWV3NY3DTQEVFL4NAT4AQH3ZLLFLA5

Mainnet issuer

GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN

EURC

References

• Circle: USDC contract addresses

• Circle: EURC contract addresses

• Community: Stellar stablecoin explorer