Decentralized trading platform Papertrade has drawn scrutiny after allegations surfaced that two cryptocurrency wallets manipulated Ether prices through large orders on Hyperliquid. The claims, reported on October 11, center on trades that briefly moved ETH quotes while the same addresses held substantial long positions on Papertrade.

Details of the Alleged Activity

According to the claims, the two wallets executed orders valued at approximately $20 million each on Hyperliquid. These trades allegedly shifted Ether prices by 10 to 20 basis points, equivalent to a movement of 0.1% to 0.2%. At the same time, the wallets are said to have opened long positions on Papertrade with a combined notional value reaching into the hundreds of millions of dollars.

Long positions profit when the underlying asset price rises. The alleged approach involved influencing the reference price on Hyperliquid while maintaining far larger exposure on Papertrade, which settles synthetic trades against its own liquidity pool using prices drawn from Hyperliquid.

No independently verified transaction records, wallet identities, or confirmed profit figures have been presented. The size of any potential impact on Papertrade’s liquidity pool remains unconfirmed.

How Papertrade’s Pricing Works

Papertrade determines entry and exit prices for positions by reading the midpoint between Hyperliquid’s best bid and best offer. The best bid is the highest price a buyer is willing to pay, while the best offer is the lowest price a seller will accept. Smart contracts on the platform use this midpoint to calculate profits and losses for synthetic trades settled with the protocol’s liquidity pool.

Unlike traditional order-book matching, Papertrade does not directly pair buyers and sellers. Positions are opened and closed against the pool, with leverage available up to 1,000 times on markets that include Bitcoin and Ethereum. Documentation for the platform notes that traders can potentially influence the midpoint by placing an order that becomes the new best bid or offer, even if that order is never filled.

The protocol’s published materials identify possible manipulation of best bid and offer prices as a recognized risk. They also outline limits on open interest, operational protections, and other safeguards. The presence of these disclosures does not confirm that any exploit succeeded or that users incurred losses.

Differences from Hyperliquid’s Own Safeguards

Hyperliquid employs separate oracle and mark prices for its perpetual futures trading. The oracle price is calculated as a weighted median drawn from centralized exchanges and updated by validators roughly every three seconds. The mark price combines the exchange’s own market data with external prices and is used for margin calculations, unrealized profit and loss, and liquidations.

Papertrade’s design relies directly on the order-book midpoint rather than these internal Hyperliquid mechanisms. The allegations therefore concern Papertrade’s pricing choice and do not indicate any compromise of Hyperliquid’s blockchain, trading engine, or oracle system.

Unconfirmed Impact on Liquidity and Next Steps

Papertrade’s liquidity pool sits on the opposite side of customer positions. Profits and losses flow through the protocol, and the pool expands when traders realize losses. A token known as PAPER is issued in connection with eligible losses, and holders may stake it under the platform’s rules. If the pool lacks sufficient funds for profitable withdrawals, settlements can enter a payment queue.

Reports of the alleged activity have not established whether the described trades affected the pool, generated unpaid claims, or produced realized withdrawals. No public statement from Papertrade addressing the specific two-wallet claims has been identified. The platform has not released a verified loss figure, compensation plan, or timeline for any changes to its midpoint-based pricing method.

Papertrade launched recently on HyperEVM, the smart-contract environment linked to the Hyperliquid blockchain. The allegations arrive amid broader attention to price-reference risks in protocols that settle against external order books or oracles.