Stellar Community Fund

Authline - Stellar asset onboarding

SCF #44

Description

Receiving or withdrawing a Stellar asset forces users to set up a trustline manually, a context-free "create a trustline" prompt that breaks exchange/broker withdrawals and blocks issuer launches. No standard solves this across the ecosystem.

We will define that standard, with a full reference implementation, so any exchange, broker, wallet, or issuer can onboard users into an asset without manual trustline setup. Of the RFP's three options, we follow the first: authorizing trustlines on behalf of users via CAP-73. The implementation covers the issuer side (a Soroban admin contract gating an AUTH_REQUIRED asset's SAC) and the recipient side (an open-source "Welcome to Stellar" landing page), plus an SDK for wallets and exchanges, a MiCA-aware authorization design, docs, and tests, all permissively licensed.

We have already built and deployed this pattern for one regulated asset, EURCV stablecoin, live on Stellar mainnet and cited by the RFP as pointing to the shape of the solution. This grant turns that proven precursor into the asset-agnostic standard the ecosystem can adopt.