Papertrade draws $3B in Bitcoin open interest as on-chain perps exchange launches

Papertrade Launches $3B Bitcoin Open Interest as On-Chain Perps Exchange Goes Live

Launch and Initial Activity

Papertrade, a fully on-chain perpetual futures exchange built on HyperEVM, went live on October 10, 2026. Bitcoin futures open interest on the platform climbed to $3 billion shortly after launch. A fast start, measured in notional dollars Trading opened at 10 a.m. ET, or 14:00 UTC. In under 10 minutes, the exchange had recorded $14.4 billion in notional trading volume.

Trading Activity and Open Interest

Ether futures open interest reached $2.66 billion, trailing Bitcoin's $3 billion. Activity was concentrated almost entirely in those two markets. Open interest is the total value of positions still open at a given moment. Volume counts every trade, including positions opened and closed seconds later. Both figures are notional, meaning they reflect the full size of leveraged bets rather than the cash traders actually posted.

Leverage and House Liquidity Pool

That distinction matters a lot here. Papertrade offers leverage of up to 1,000x on its synthetic perpetual contracts. At 1,000x, a trader can control $1,000 of exposure with $1 of margin. So billions in notional activity can rest on a far smaller pool of real deposits.

Pre-Launch and Post-Launch

Before launch, the exchange collected pre-deposits estimated at approximately $85 million to $138 million. That money came from more than 11,000 addresses.

House Liquidity and Profit Haircut

The house starts with nothing The most unusual feature sits on the other side of every trade. Papertrade's house liquidity pool began empty. That pool is meant to grow as traders lose money. Losing positions feed the house, and the house pays out winners.

Unique Token and Profit Sharing

A token minted from losses Papertrade's native token, PAPER, launched with no initial supply. It comes into existence only when traders realize losses.

Transfers and Restrictions

While the liquidity pool holds less than $2 million, the protocol mints 100 PAPER for every $1 lost. That rate declines as the pool grows.

Transfer Restrictions

Initially, PAPER can only be moved for staking.

Impact on Traders and Rival Venues

Papertrade runs on HyperEVM and prices off Hyperliquid, so it is effectively layering a new risk model on top of an existing market's price discovery. Pricing is only as reliable as the reference market, and any disruption on Hyperliquid's side could flow straight into Papertrade's contracts.

Conclusion

The house liquidity pool starts at zero and is fine when traders lose on aggregate. A sharp, one-directional move in Bitcoin or Ether could flip that, with payouts depending on delayed settlement and the haircut mechanics.