Zero-fee stablecoin swaps
Open-source protocol for exact 1:1 swaps between supported USD stablecoins. No protocol fees, no spread, no slippage. Autonomous smart contracts settle swaps according to deterministic rules.
Exact 1:1 swaps
Swap supported USD stablecoins one-to-one when reserves are available. No protocol spread, slippage, or fees.
No lockups
Withdraw any available stablecoin any time, subject to reserves. No lockups.
Queue-based
Want a stablecoin that is not currently in reserves? Join the queue and get filled automatically when it arrives.
About the protocol
Dollar Store is open-source software deployed as autonomous smart contracts on Ethereum. The protocol facilitates queue-based stablecoin exchange, treating supported USD stablecoins as equivalent for protocol accounting.
Once deployed, smart contracts operate automatically according to their programmed logic. No person or entity executes transactions, routes assets, or intervenes in protocol operation.
Security & audits
Dollar Store smart contracts have been audited by OpenZeppelin, a leading blockchain security firm. The latest report covers the v3 hub-and-spoke protocol: pools, deposits and withdrawals, directed swaps, queue management, and the oracle and pause risk controls.
View audit reportFor integrators
The protocol exposes permissionless smart-contract interfaces for programmatic integration. Aggregators, protocols, and applications can incorporate Dollar Store routes directly.
View integration documentation