Conflux v2.4.0

This release introduces a new hardfork. All nodes should be upgraded before the epoch number reaches 101900000 (estimated on Aug 6). CIPs will be enabled when the block number reaches 247480000 (estimated on Aug 13), and CIP-136 will be enabled when the PoS block number reaches 1684080 (estimated on Aug 13).

Incompatible Changes

• CIP-130 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-130.md): This CIP proposes aligning gas limit with transaction size.
• CIP-131 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-131.md): This CIP proposes to remove the “clear contract whitelist on contract deletion” feature.
• CIP-132 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-132.md): This CIP proposes to fix a specific bug related to static context checks.
• CIP-133 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-133.md): This CIP proposes to improve the block hash query, in Ethereum Virtual Machine (EVM).
• CIP-136 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-136.md): This CIP proposes to increase the PoS lock/unlock/retire periods back to the values before CIP113.
• CIP-137 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-137.md): This CIP proposes adjusting how transaction fees are distributed under the Conflux CIP-1559 update, aiming to share a portion of the base fee with miners.
• CIP-141 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-141.md): This CIP proposes to disable subroutine opcodes.
• CIP-142 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-142.md): This CIP proposes to introduce the transient storage opcodes.
• CIP-143 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-143.md): This CIP proposes to introduce the MCOPY (0x5e) instruction for efficient memory copy.
• CIP-144 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-144.md): This CIP proposes to introduce the KZG point evaluation precompiled contract.
• CIP-145 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-145.md): This CIP proposes to fix receipts upon NotEnoughBalance error.
• CIP-1559 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-1559.md): This CIP proposes to introduce Ethereum’s EIP-1559 fee structure to Conflux while accounting for the unique aspects of the Conflux network.

RPC Improvement

• Implement Geth style trace RPC for eSpace, including debug_traceTransaction, debug_traceBlockByHash, and debug_traceBlockByNumber. Docs about tracer is in docs/transaction-tracer.
• Support EIP1559-type eSpace transactions.
• Implement EIP1559 related RPCs eth_feeHistory and eth_maxPriorityFeePerGas.
• Support CIP1559-type native transactions.
• Implement CIP1559 related RPCs cfx_maxPriorityFeePerGas, cfx_feeHistory, and cfx_getFeeBurnt.

Bug Fix

• Fix a packing pool bug when all the transactions have the same price.

Conflux v2.4.0-testnet-fix3

This should be updated before the PoS block number reaches 1733760 (Jul 4).

• Set the locking and unlocking time corectly back to 13 days and 1 day respectively.

Conflux v2.4.0-testnet-fix2

• Fix a failing debug assert.

Conflux v2.4.0-testnet-fix

• Fix PoS hardfork parameters.

Conflux v2.4.0-testnet

This release introduces a new hardfork. All nodes should be upgraded before the epoch number reaches 175600000 (estimated on June 13). CIPs will be enabled when the block number reaches 226570000 (estimated on June 14), and CIP-136 will be enabled when the PoS block number reaches 1685544 (estimated on June 14).

Incompatible Changes

• CIP-130 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-130.md): This CIP proposes aligning gas limit with transaction size.
• CIP-131 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-131.md): This CIP proposes to remove the “clear contract whitelist on contract deletion” feature.
• CIP-132 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-132.md): This CIP proposes to fix a specific bug related to static context checks.
• CIP-133 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-133.md): This CIP proposes to improve the block hash query, in Ethereum Virtual Machine (EVM).
• CIP-136 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-136.md): This CIP proposes to increase the PoS lock/unlock/retire periods back to the values before CIP113.
• CIP-137 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-137.md): This CIP proposes adjusting how transaction fees are distributed under the Conflux CIP-1559 update, aiming to share a portion of the base fee with miners.
• CIP-141 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-141.md): This CIP proposes to disable subroutine opcodes.
• CIP-142 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-142.md): This CIP proposes to introduce the transient storage opcodes.
• CIP-143 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-143.md): This CIP proposes to introduce the MCOPY (0x5e) instruction for efficient memory copy.
• CIP-144 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-144.md): This CIP proposes to introduce the KZG point evaluation precompiled contract.
• CIP-145 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-145.md): This CIP proposes to fix receipts upon NotEnoughBalance error.
• CIP-1559 (https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-1559.md): This CIP proposes to introduce Ethereum’s EIP-1559 fee structure to Conflux while accounting for the unique aspects of the Conflux network.

RPC Improvement

• Implement Geth style trace RPC for eSpace, including debug_traceTransaction, debug_traceBlockByHash, and debug_traceBlockByNumber. Docs about tracer is in docs/transaction-tracer.
• Support EIP1559-type eSpace transactions.
• Implement EIP1559 related RPCs eth_feeHistory and eth_maxPriorityFeePerGas.
• Support CIP1559-type native transactions.
• Implement CIP1559 related RPCs cfx_maxPriorityFeePerGas, cfx_feeHistory, and cfx_getFeeBurnt.

Bug Fix

• Fix a packing pool bug when all the transactions have the same price.

Conflux v2.3.5

Bug Fix

• Fix some compatibility issues that block archive nodes from syncing.
• Fix a transaction pool underflow/overflow.
• Fix an issue that Sqlite may use too much system temp directory space.
• Fix a packing pool bug when all the transactions have the same price.
• Fix a corner case where CIP-107 assertation fails.

Improvement

• Make reboot faster if use_isolated_db_for_mpt_table is enabled.
• Enable keep_era_genesis_snapshot by default to provide one more snapshots for sync.
• Refactor EVM code to prepare for the following hardforks.

Conflux v2.3.5-testnet

Bug Fix

• Fix some compatibility issues that block archive nodes from syncing.
• Fix a transaction pool underflow/overflow.
• Fix an issue that Sqlite may use too much system temp directory space.

Improvement

• Make reboot faster if use_isolated_db_for_mpt_table is enabled.
• Enable keep_era_genesis_snapshot by default to provide one more snapshots for sync.

Conflux v2.3.4

Configuration Improvement

• Add configuration use_isolated_db_for_mpt_table. Setting it to true will reduce the disk usage.
  • Note that the first restart after setting this configuration will take several hours, and the feature is still being tested, so use with caution.

Transaction Pool Improvement

• Implement a new transaction pool packing strategy so transactions with higher gas prices are more likely to be packed.

RPC Improvement

• Fix a rare panic in RPC metrics.
• Only count core space transactions for cfx_gasPrice.

Bug Fixes

• Fix an issue that may make the transaction pool panic.
• Fix an issue in the snapshot optimization that may lead to reboot failure.

Conflux v2.3.4-3-testnet

Bug Fix

• Fix an issue in the snapshot optimization that may lead to reboot failure.

Conflux v2.3.4-2-testnet

Bug Fix

• Fix an issue that may make the transaction pool panic.