Contract Directory
VelumX maintains a minimal on-chain footprint. The only contract VelumX deploys is the reference paymaster for the VelumX DeFi frontend.Stacks Mainnet
| Contract | Address | Status | Purpose |
|---|---|---|---|
| VelumX DeFi Paymaster v1 | SPKYNF473GQ1V0WWCF24TV7ZR1WYAKTC7AM8QGBW.velumx-defi-paymaster-v1 | 🟢 Active | Bitflow swaps + USDCx bridge reference |
Deprecated Contracts
The following contracts are no longer used. They remain on-chain (Clarity contracts are immutable) but are not referenced by any active VelumX infrastructure.| Contract | Address | Status |
|---|---|---|
| Universal Paymaster v5 | SPKYNF473GQ1V0WWCF24TV7ZR1WYAKTC7AM8QGBW.universal-paymaster-v5 | 🔴 Deprecated |
| VelumX Registry v1 | SPKYNF473GQ1V0WWCF24TV7ZR1WYAKTC7AM8QGBW.velumx-registry-v1 | 🔴 Deprecated |
| VelumX Relayer v1 | SPKYNF473GQ1V0WWCF24TV7ZR1WYAKTC7AM8QGBW.velumx-relayer-1 | 🔴 Deprecated |
| VelumX Paymaster 1-1 | SPKYNF473GQ1V0WWCF24TV7ZR1WYAKTC7AM8QGBW.velumx-paymaster-1-1 | 🔴 Deprecated |
Third-Party Contracts Used
Bitflow StableSwap Pools
| Pool | Contract |
|---|---|
| STX / stSTX | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.stableswap-stx-ststx-v-1-2 |
| aeUSDC / sUSDT | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.stableswap-aeusdc-susdt-v-1-2 |
| USDA / aeUSDC | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.stableswap-usda-aeusdc-v-1-4 |
| aBTC / xBTC | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.stableswap-abtc-xbtc-v-1-2 |
Bitflow Router Contracts
| Router | Contract |
|---|---|
| STX/stSTX via ALEX | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.router-stx-ststx-bitflow-alex-v-2-1 |
| STX/stSTX via Velar | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.router-stx-ststx-bitflow-velar-v-1-2 |
| STX/stSTX via Arkadiko | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.router-stx-ststx-bitflow-arkadiko-v-1-1 |
| StableSwap/XYK | SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.router-stableswap-xyk-v-1-3 |
USDCx Bridge
| Contract | Address |
|---|---|
| USDCx v1 | SP120SBRBQJ00MCWS7TM5R8WJNTTKD5K0HFRC2CNE.usdcx-v1 |
Developer-Deployed Contracts
Developers who integrate USER_PAYS deploy their own paymaster contracts. VelumX does not maintain a registry of these contracts — they are owned and operated entirely by the developer. Usevelumx-defi-paymaster-v1 as your starting template. See The Paymaster Pattern for details.