This is a hardfork release that will enable BEP127 and BEP131 on the Chapel testnet. This upgrade is named after Leonhard Euler in honor of his key contributions to mathematics and mechanics. The current block generation speed forecasts this to occur around May 11th at 03:18:00 AM (UTC). The validators and full node operators on testnet should switch their software version to this release by May 11th.

Upcoming Changes

BEP-127 Temporary Maintenance Mode for Validators

Due to the design of Parlia consensus, the absence of the validator, even if it is due to scheduled maintenance, will cause instability and capacity loss of BSC due to the extra waiting time and chain reorganization for other validators. Introducing Temporary Maintenance mode will stabilize the blocking rotation and maintain the capacity of BSC.

A validator can claim itself to enter temporary maintenance mode by sending a transaction to interact with ValidatorSet smart contract. Temporary maintenance is supposed to last one or a few hours. The validator seat will be temporarily dropped from the block producing rotation during the maintenance. Since long-time offline maintenance is not encouraged, the validator will still be slashed if the maintenance lasts too long. To lower the impact from poorly-operating validators who forget to claim its maintenance, they will be forced to enter temporary maintenance mode too.

Check BEP-127 for more details.

BEP-131 Introduce candidate validators onto BNB Smart Chain

This BEP introduces candidate validators onto BSC testnet to improve the liveness and robustness of the network.

BSC testnet will introduce more validators, e.g. another 10 inactive validators, into the validator set as backups, which will be called "Candidates". Candidates will produce blocks and charge gas fees on BNB Smart Chain mainnet, but with a much less chance than the active validator set of 11 elected. A decent motivation is expected to be maintained so that the candidate validators are willing to ensure the quality and help secure BNB Smart Chain.

The number of Candidate Validators is subjected to the BSC testnet governance. The BSC Chapel Testnet will keep the same number of Active Validators and 0 Candidate Validators right after Euler upgrade, and the later governance action will enlarge the Candidate Validator Set to allow new Candidate Validator to be set up.

Check BEP-131 for more details.

Changelog

FEATURE

• #885 add Euler Hardfork, including BEP-127 and BEP-131

BUGFIX

• #856 fix logic issue: handlers.removePeer() is called twice
• #860 fix:defer bloomprocessor close
• #877 fix validator pipecommit issue
• #870 fix:Shift panic for zero length of heads

Assets