Conflux (CFX) CFX Deploys v3.0.2 Testnet With Critical RPC Bug Fixes

Conflux (CFX) Network pushed its v3.0.2 testnet upgrade live on January 13, targeting a pair of bugs that affected RPC functionality and Proof-of-Stake reward processing. The update also introduces new developer tools aimed at improving transaction verification on the eSpace EVM-compatible layer.

CFX traded at $0.076 at the time of announcement, down 0.6% over 24 hours with a market cap of $386.8 million. The testnet release follows a pattern of steady infrastructure improvements from the China-endorsed Layer-1 project.

What Got Fixed

The most notable bug involved the eth_call coinbase opcode returning a random address instead of the correct one—a problem that could cause issues for developers testing smart contract interactions. The team also patched a PoS reward reexecution flaw where the database wasn’t properly checking if rewards sat on the pivot chain before reprocessing.

Neither bug appears to have caused user fund losses, but both represented potential stability risks had they propagated to mainnet.

New Developer Endpoints

The upgrade adds debug_blockProperties, a custom eSpace RPC endpoint that returns extra block property information for all transactions within an eSpace block. Why does this matter? Transactions in a single Conflux eSpace block can actually have different block contexts—different coinbase addresses, timestamps, and difficulty values—during execution. Services that need to verify transaction execution now have a cleaner way to access this data.

Developers also get a new blockTimestamp field in the log object for methods like eth_getLogs, plus improved block number type handling that now supports block hash queries.

Performance Tweaks

Storage operations got optimized to only read when entries aren’t already occupied—a small change that reduces unnecessary I/O. The eth_feeHistory call now reads just block headers rather than full blocks when calculating base prices, which should speed up fee estimation queries.

On the infrastructure side, the team switched memory allocators from jemallocator to tikv-jemallocator and added memory and CPU profiling support for better debugging.

What Node Operators Should Know

Conflux explicitly stated this upgrade is optional—nodes will continue functioning without it. That said, operators who want the stability improvements need to suspend their node, swap in the new conflux executable from the GitHub release, and restart.

The testnet designation means mainnet deployment likely comes next, though the team hasn’t announced a specific timeline. Given Conflux’s recent momentum—CFX surged 9% in late December following a PlaysOut AI gaming partnership—the development activity suggests continued focus on infrastructure ahead of what analysts expect to be a volatile Q1 2026.

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