Elation

This version introduces support for two major features: anti-MEV encrypted transactions processing and threshold BLS block signatures. Two new forks are implemented to provide these features: NeoXDKG enables new system KeyManagement contract that allows consensus nodes to participate in the DKG process, and NeoXAMEV that enables encrypted transactions processing at the consensus level and BLS threshold block signatures which solves the frequent chain reorg problem.

Please, follow carefully the notes to upgrade your node from v0.2.2 to v0.3.0:

1. Download new binary and new genesis configuration file (go-ethereum/config/genesis_mainnet.json or go-ethereum/config/genesis_testnet.json) from the release page.
2. Gracefully stop the node.
3. Replace the old binary with the new binary.
4. Don't remove DB. Reinitialize DB using new binary and new configuration file for the corresponding network with the following command:

   ./geth init --datadir ./node-datadir ./config/genesis.json
   

5. If you're running a consensus node, ensure this step is executed in a safe environment. Generate anti-MEV keystore for your consensus node with new binary using the following command:

   ./geth --datadir ./node-datadir antimev init <address>
   

   • <address> is the address of your consensus node that is used to participate in the consensus process, it can be found in the consensus node wallet.
     You will be prompted for a password. Ensure that you remember the password.
6. Adjust your node's runner script:
   • For consensus nodes only: add a password for anti-MEV keystore using --antimev.password ./password.txt flag.
   • Optional: if you'd like to change the dBFT log level from default (info), specify it via --dbft.loglevel debug flag.
7. Start the node.

New features:

• anti-MEV keystore support for the node and CLI and related TPKE cryptography implementation (#301, #326, #332, #371, #392, #394)
• new KeyManagement system contract (#312, #332, #398)
• anti-MEV enabled dBFT consensus support (#287)
• NeoXDKG fork that enables KeyManagement system contract operations, BLS precompiles and MCOPY opcode (#328, #332, #402, #409)
• NeoXAMEV fork that enables anti-MEV logic, encrypted transactions processing for consensus engine and threshold block signatures (#321, #347, #358, #384, #383, #385, #391, #393, #389, #392, #416, #418, #421)

Behaviour changes:

• NeoXBurn fork is removed (#328)
• OnPersist system script execution now includes KeyManagement system contract call (#330)
• reduce block acceptance interval to 5 seconds (#369)
• Governance system contract voting lock is removed, logic distribution scheme is adjusted to be seamless (#349)

Improvements:

• enhanced transactions verification logic in consensus engine (#339)
• Governance contract updates required for DKG setup (#337)
• watch-only consensus nodes are added to privnet (#359)
• maintain processed block state in consensus engine of every consensus node (#360)
• possibility of fallback from threshold block signature to multisignature (#366, #390)
• stabilize block generation time (#396)
• make GovernanceReward contract accept Envelope transfers (#400)
• ability to customize dBFT log messages level (#419)
• anti-MEV transactions policies (#413, #422)

Bugs fixed:

• extensible payload senders are not properly verified (#319)
• watch-only consensus node is able so send consensus messages (#351)
• unexpected timeout for system contract calls (#379)
• new blocks are not tracked during sealing proposal awaiting (#404)
• RecoveryMessage encoding format incompatibility (#425)