v2.4.0

Important

Mandatory upgrade.
This release activates a hardfork. All node operators must upgrade to v2.4.0 before the following block heights:

Hayabusa Hardfork

Testnet Hardfork: Block 23,221,800 ~ Tue, 4 Nov 2025 11:39:30 UTC
Mainnet Hardfork: Block 23,414,400 ~ Tue, 02 Dec 2025 11:27:00 UTC

What’s Changed

Hayabusa marks the beginning of VeChain’s Delegated Proof of Stake (DPoS) era expanding participation, aligning incentives, and setting the stage for scalable community governance.

Named after the pioneering Japanese spacecraft, Hayabusa symbolizes precision, endurance, and innovation reflecting VeChain’s leap toward broader decentralization and network sustainability.

What's Changed

• Delegated Proof of Stake (DPoS) (VIP-253) transforms the consensus model, allowing VET holders to stake or delegate and directly participate in network security.
• Dynamic VTHO Tokenomics (VIP-254) replaces static VTHO generation with staking-based block rewards that adapt to network activity and staked supply.
• Validator Lifecycle Overhaul staking, delegating, renewal, exit, and withdrawal are all managed via the new Staker contract.
• Stake-Weighted Finality blocks finalize based on validator weight, improving resilience and cryptoeconomic security.
• Performance & Stability significant optimization to gas usage, storage writes, and housekeeping efficiency.
• Developer Readiness improved error context, new admin APIs, enhanced Solo/Testnet tooling, and complete Devnet mirror.
• VTHO Issuance will stop at the above mentioned block heights and will reactivate as block rewards after the successful transition from PoA to DPoS.

Audit Reports

• Trail of Bits
• Halborn

Contributors

Huge thanks to everyone who brought Hayabusa to life:

• @darrenvechain
• @freemanzMrojo
• @libotony
• @moglu2017
• @nwbrettski
• @otherview
• @paologalligit
• @vanja-vechain
• @YeahNotSewerSide

Special shout-out to the engineering, QA, and research teams for the months of design, iteration, and validation behind Hayabusa - a massive step forward for VeChain’s evolution.

Full Changelog:
v2.3.2...v2.4.0

v2.4.0-rc.2

Superseded by v2.4.0

v2.4.0-rc.1

Superseded by v2.4.0-rc.2

Full Changelog:
v2.3.2...v2.4.0-rc.1

v2.3.2

What's Changed

• Improved Sync Times

  • Improve node sync times by increasing the buffer size and processing the RLP in parallel. This will drastically decrease the sync time during the initial sync.

• Improve block propose flow

  • Enhanced the packer flow to determine the optimal timing for scheduling the block proposal, even in cases where the parent block propagation is delayed due to various factors.

• Logs Events Bug Fix

  • Fix a bug where the logs event endpoint was returning an empty array when options are defined.

• Minor Improvements and Technical Debt:

  • Add metrics to the disco package.
  • Add bandwidth metrics.
  • Update Swagger UI version.
  • Update README.md.
  • Linter updates.
  • Verify clock offset.

---

Contributors

Huge thanks to our contributors for this release:

• @otherview
• @libotony
• @freemanzMrojo
• @YeahNotSewerSide
• @darrenvechain
• @vanja-vechain
• @nwbrettski

---

Full Changelog: v2.3.1...v2.3.2

v2.3.2-rc.1

Superseded by v2.3.2

v2.3.1

Important

• This upgrade requires a re-sync of the logsDB for public nodes.
• Snapshots prior to this release will no longer be valid.

---

What's Changed

• logIndex and transferIndex per block instead of per transaction

  • The logIndex and transferIndex have been updated to be set per block instead of per transaction. This implementation is aligned with the EVM and should improve alignment with other EVM chains. As a result of this change a full re-sync of the logsDB will be required #1140

• Add New Bootnodes

  • New bootnodes are being added to the network and in a coming release the old bootnodes will be phased out. The purpose of this is to achieve better geographical distribution and ensures that this critical infrastructure is up-to-date #1141

• Some other improvements/updates

  • Updated go-ethereum fork #1153
  • baseFee cache in the txpool #1126
  • Added more metrics #1124, #1119

---

Contributors

Huge thanks to our contributors for this release:

• @YeahNotSewerSide
• @otherview
• @darrenvechain
• @vanja-vechain
• @libotony
• @moglu2017
• @freemanzMrojo

---

Full Changelog: v2.3.0...v2.3.1

v2.3.1-rc.2

Superseded by v2.3.1

Full Changelog: v2.3.1-rc.1...v2.3.1-rc.2

v2.3.1-rc.1

Superseded by v2.3.1

Full Changelog: v2.3.0...v2.3.1-rc.1

v2.3.0

Important

• This is a hardfork version release - please update your nodes before the hardfork dates below.
• If upgrading from a version before 2.2.0, a full resync is required.

Galactica Hardfork

Part of the VeChain Renaissance.

Testnet Hardfork : Block 21770500 ~ Tue, 20 May 2025 12:00:00 UTC
Mainnet Hardfork : Block 22084200 ~ Tue, 01 Jul 2025 12:00:00 UTC

What's Changed

• Dynamic Fee Market - VIP - 251
• Typed Transactions - VIP - 252
• EVM Alignment to Shanghai - VIP - 242
• Extension V3 Add Clause Context - VIP - 250
• Transaction Per Account Per Block Limit Increase from 16 to 128
• New Fee Endpoints /fees/history and /fees/priority

Audit Reports:

• NCC Group Audit
• Coinspect Audit

Contributors

Huge thanks to our contributors for this release

• @darrenvechain
• @freemanzMrojo
• @libotony
• @otherview
• @paologalligit
• @vanja-vechain
• @YeahNotSewerSide

---

Full Changelog: v2.2.2...v2.3.0

v2.3.0-rc.1

Superseded by v2.3.0

---

Full Changelog: v2.2.2...v2.3.0-rc.1