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Unichain Flashblocks Overview

Actualizado el
Mar 05, 2026

Resumen

Flashblocks is a transaction preconfirmation feature on Unichain that delivers partial block updates every 200 milliseconds, achieving up to 10x faster confirmations than Unichain's standard 2-second block time. This enables applications to access near-instant transaction feedback, enhancing responsiveness for time-critical use cases like decentralized exchanges and onchain gaming.

Flashblocks is useful for:


  • Applications that require real-time feedback
  • Decentralized exchanges and trading platforms
  • Onchain games or apps with frequent state updates
  • Interfaces that benefit from faster feedback such as live dashboards

Using Flashblocks with Unichain Endpoints

Flashblocks is currently supported on the Unichain and can be accessed using your existing Quicknode Unichain endpoint — no additional add-ons are required.

RedFlashblocks Availability
Unichain Mainnet
Unichain Sepolia

Supported RPC Methods

Access Flashblocks preconfirmations through your Unichain endpoint by using the pending tag on methods like eth_getBlockByNumber, eth_getBalance, y eth_getTransactionCount. Additionally, fetch Flashblocks related transaction details via methods such as eth_getTransactionReceipt y eth_getTransactionByHash. You can also use eth_subscribe over WebSocket to stream real-time Flashblock data including new transactions, pending logs, and block state updates, and stop active streams when needed using eth_darse_de-baja.

MétodoDescripción
eth_callCon "pending", executes contract calls using Flashblock state
eth_getBalanceCon "pending", reflects balances from the latest Flashblock
eth_getBlockByNumberCon "pending", returns the most recent Flashblock
eth_getLogsCon "pending", returns logs from the latest Flashblock
eth_getTransactionByHashReturns the transaction with the specified hash
eth_getTransactionCountCon "pending", returns the updated nonce from Flashblocks
eth_getTransactionReceiptReturns receipts for preconfirmed transactions
eth_subscribeSubscribes to real-time Flashblock events via WebSocket (e.g., newFlashblocks, newFlashblockTransactions, pendingLogs)
eth_darse_de-bajaUnsubscribes from an active WebSocket subscription created with eth_subscribe

Recursos


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