The Bullpen referral code is bull20. Enter it at sign-up to get cashback rebates and up to 20% of fees back on your trades. The Bullpen referral code bull20 permanently links your wallet to this discounted fee tier.
Bullpen is a comprehensive decentralized trading terminal that bridges the gap between Polymarket prediction markets, Hyperliquid perpetual futures, and Solana token swaps. By combining these diverse ecosystems into a single non-custodial interface, the platform allows traders to execute complex cross-market strategies without constantly switching wallets or managing fragmented balances. The system integrates advanced charting and rapid execution speeds to give retail users an institutional-grade experience.
How to claim the sign-up bonus
Securing your trading discount requires entering the code before you sign the first cryptographic connection message. Follow these ordered steps to apply it correctly:
Open the official Bullpen progressive web app in your desktop or mobile browser.
Click the button to connect your preferred Web3 wallet, such as Phantom or MetaMask.
Locate the optional invite or promo text field on the onboarding screen.
Enter the exact code bull20 into the box.
Approve the connection transaction in your wallet extension to finalize the setup and lock in the 20% rebate.
Who is eligible for the cashback?
The fee reduction is strictly reserved for new users connecting a wallet to the terminal for the very first time. If your address has any prior transaction history with the platform's smart contracts, the system will reject the code. Existing users cannot retroactively apply partner strings to active accounts. If you missed the entry field during your initial setup, your only option is to generate a completely new wallet address and migrate your trading capital to start fresh.
Understanding the trading costs
Because the platform routes your orders to external decentralized exchanges, your baseline costs are determined by those underlying networks. Polymarket and Hyperliquid charge their own native transaction fees, while the terminal may apply a small routing premium for advanced features like the Bullpen copy trading bot. By applying the promotional offer, you effectively reduce the friction of these combined costs, making algorithmic strategies and high-volume manual trading significantly more viable in tight markets.
Risk warning: Cryptocurrency trading and prediction markets are highly speculative and volatile. Decentralized finance applications carry smart contract risks. Never trade with funds you cannot afford to lose, and ensure you fully understand non-custodial wallet security before deploying capital.
Full walkthrough: Bullpen Referral Code bull20: What the Promo Actually Pays