📡 Trustlines

Trustlines are a fundamental feature on certain blockchains that determine which tokens a wallet can hold and interact with. Unlike EVM chains - where tokens automatically appear in your wallet when you hold them - some networks require users to explicitly approve each token they wish to accept. This approval comes in the form of a trustline.

By setting a trustline, you signal to the blockchain that you trust the issuer of that token (in this case, AUDD) and are willing to hold it in your wallet. Without this step, transactions involving AUDD cannot be completed.

🔗 What Are Trustlines?

A Trustline is a ledger entry that establishes a connection between your wallet and a specific token issuer. Think of it as a pre-approved list of tokens you’re willing to accept.

• Without a trustline: Your wallet will reject deposits of that token, even if someone tries to send them.
• With a trustline: Your wallet can receive, hold, and transact with that token normally.

Trustlines protect users from spam tokens, but they also add an extra setup step when working with stablecoins like AUDD.

💡 Why Are Trustlines Required for AUDD?

AUDD is issued on multiple blockchains, some of which require Trustlines to ensure user consent. To interact with AUDD on these networks, you must create a Trustline to the AUDD issuer account. This ensures:

• Security: Only tokens you explicitly trust are accepted.
• Functionality: AUDD transactions (deposits, withdrawals, transfers) won’t work until a Trustline exists.
• Transparency: You know exactly which tokens you’re engaging with.

🌐 Blockchains That Require Trustlines

The following blockchains require Trustlines to interact with AUDD:

• Stellar
  • AUDD on Stellar requires a Trustline before you can receive or send tokens.
  • Guide: How to establish a Trustline on Stellar
• XRP Ledger (XRPL)
  • Trustlines are required for issued tokens on XRPL, including AUDD.
  • Guide: How to establish a Trustline on XRPL

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Native Assets Required:

Establishing a Trustline requires holding the blockchain’s native token to cover network fees. On testnet, you can obtain these for free via tools like Friendbot (Stellar) or Bithomp (XRPL). On mainnet, you’ll need to purchase the native tokens (XLM for Stellar, XRP for XRPL) through your local exchange.