Stripe’s acquisition of the crypto wallet infrastructure firm Privy in 2025 is already bearing fruit: Privy, together with Solana infrastructure provider Jito Labs, has launched a new transaction routing system called FullSend. The innovative solution is designed to enable faster and more reliable inclusion of transactions on the Solana blockchain, aiming to improve efficiency across the network.
Direct routing to block producers
According to company statements, FullSend has been quietly integrated into Privy wallets since the beginning of the year. During this period, FullSend has achieved a remarkable performance rate, successfully including 99.999% of transactions across millions of attempts.
The FullSend system routes transactions signed through Privy wallets directly to Solana’s current and upcoming block leaders via Jito’s low-latency network. Since block producers on Solana rotate roughly every 400 milliseconds, delivering transactions to the right validator at the right moment is crucial for timely inclusion.
Traditionally, transactions are propagated through public or hosted RPC nodes, acting as intermediaries for network communications. FullSend removes these middlemen, delivering transactions straight to block leaders. By bypassing this layer, companies report that transaction inclusion latency is reduced to around 50 milliseconds, compared to 200 milliseconds or more with classic routing approaches.
Glossary: An RPC node is a technical access point allowing wallets and applications to communicate with a blockchain network. MEV refers to strategies for extracting additional revenue from transactions observed before block production; this can include front-running and transaction reordering.
Streamlining complexity for developers
Privy’s Chief Technology Officer Asta Li emphasized that the central goal of FullSend is to reduce the complexity developers face when juggling priority fees, extra network incentives, and endpoint selection.
Privy’s leadership highlighted that FullSend is designed to ease the burden on developers, simplifying the process of balancing priority fees, added incentives, and connection management within the network.
Jito Labs noted that its infrastructure reliably gets transactions directly to validators responsible for producing upcoming blocks. This approach helps users maintain standard priority fees and reduces their exposure to automated bots targeting pending transactions.
Enhanced protection against MEV attacks
Both companies maintain that FullSend offers additional safeguards against widespread MEV attack vectors, including front-running, sandwich attacks, and transaction censorship. As speed and precision become more critical in Solana-based applications, infrastructure-level protections are increasingly vital.
Jito Labs CEO Lucas Bruder underscored that speed and reliability are now core requirements for applications on Solana. He stated that, by routing directly to block leaders, FullSend delivers native MEV protection alongside improved performance.
Stripe continues expanding in crypto infrastructure
This move marks the latest chapter in Stripe’s growing footprint in the crypto infrastructure space. The payments technology giant acquired Privy in 2025 and, earlier this year, Privy announced a collaboration with Alchemy to onboard institutional users.
Privy reports that its infrastructure is now used by prominent fintech firms including Klarna, Ramp, and Deel, as well as crypto trading platforms such as Hyperliquid. The company states its technology supports over 140 million accounts and handles billions of dollars in monthly transaction volume. Meanwhile, Stripe is broadening its investments in blockchain-based payment systems—most notably, by developing the stablecoin-focused Layer 1 blockchain, Tempo.
