A Trustless Work engineer took second place at Stellar Summit for a testnet POC combining Confidential Tokens with escrow infrastructure. Green Road emerged as a personal learning project exploring privacy-preserving payment mechanics — specifically, what balances can hide versus what relationships remain visible. The work surfaces important trade-offs around selective disclosure and transaction correlation that future privacy-escrow designs must address.
A Trustless Work engineer shared learnings from Green Road, a testnet proof of concept merging Stellar's Confidential Tokens with escrow conditions. The project started as a personal deep-dive into how Confidential Tokens actually work; building revealed both privacy guarantees and their limits. The engineer kept balances and settlement amounts hidden while allowing escrow conditions to function, but discovered that hiding amounts is not the same as hiding relationships between parties. The work identifies a larger design space around auditors, selective disclosure, and transaction graph analysis. The code is open-sourced on GitHub, and the author is continuing to explore what a production privacy-preserving escrow should look like.
