Besu, an LF Decentralized Trust project
@besuofficial.bsky.social
Besu is an open-source Ethereum client developed under the Apache 2.0 license and written in Java. Hosted by LFDT. All are welcome.
Besu 25.12.0 - Release is now available
This is a recommended update for all users.
Highlights:
Performance: 5-6x faster toFastHex calculation for engine_getBlobsV2
Performance: Optimise engine_getPayload* methods and engine_getBlobsV2
Full Release Notes
github.com/hyperledger/...
This is a recommended update for all users.
Highlights:
Performance: 5-6x faster toFastHex calculation for engine_getBlobsV2
Performance: Optimise engine_getPayload* methods and engine_getBlobsV2
Full Release Notes
github.com/hyperledger/...
Release 25.12.0 · hyperledger/besu
25.12.0
Breaking Changes
Remove these deprecated CLI options #9385
Remove--Xbonsai-parallel-tx-processing-enabled deprecated since 25.7.0. Use --bonsai-parallel-tx-processing-enabled instead.
Rem...
github.com
December 12, 2025 at 7:46 AM
Besu 25.12.0 - Release is now available
This is a recommended update for all users.
Highlights:
Performance: 5-6x faster toFastHex calculation for engine_getBlobsV2
Performance: Optimise engine_getPayload* methods and engine_getBlobsV2
Full Release Notes
github.com/hyperledger/...
This is a recommended update for all users.
Highlights:
Performance: 5-6x faster toFastHex calculation for engine_getBlobsV2
Performance: Optimise engine_getPayload* methods and engine_getBlobsV2
Full Release Notes
github.com/hyperledger/...
The Ethereum Fusaka upgrade is live on mainnet and running smoothly across the network. Kudos to ACD and client teams for another deliberately boring rollout. And 60M gas already!
December 4, 2025 at 1:37 AM
The Ethereum Fusaka upgrade is live on mainnet and running smoothly across the network. Kudos to ACD and client teams for another deliberately boring rollout. And 60M gas already!
Besu Fleet: Reactive RPC Scaling: architecture, benchmarks, lessons - and it’s now open source! Try it out. Talk here: www.youtube.com/watch?v=HDxa... #BesuOfficial #ethereum.org #devcon.org
RPC Fleet Mode - Lightweight Reactive Scaling with Besu - Gary Schulte - Besu
YouTube video by EthStaker
www.youtube.com
December 2, 2025 at 1:29 AM
Besu Fleet: Reactive RPC Scaling: architecture, benchmarks, lessons - and it’s now open source! Try it out. Talk here: www.youtube.com/watch?v=HDxa... #BesuOfficial #ethereum.org #devcon.org
Besu performance was a top goal for 2025. In this post: progress toward a 60M gas limit, stronger worst‑case handling (with the Nethermind team), faster sync, and RPC/block processing gains - plus what’s next in 2026. www.lfdecentralizedtrust.org/blog/boostin...
Boosting Besu Performance: 2025 Accomplishments and 2026 Roadmap
Blog post from the Besu maintainers covering the significant 2025 performance improvements and the roadmap for scaling Ethereum even further in 2026.
www.lfdecentralizedtrust.org
November 19, 2025 at 9:16 PM
Besu performance was a top goal for 2025. In this post: progress toward a 60M gas limit, stronger worst‑case handling (with the Nethermind team), faster sync, and RPC/block processing gains - plus what’s next in 2026. www.lfdecentralizedtrust.org/blog/boostin...
Glamsterdam EIPs - Besu team ranking - hackmd.io/@RoboCopsGon...
November 18, 2025 at 10:44 PM
Glamsterdam EIPs - Besu team ranking - hackmd.io/@RoboCopsGon...
Besu 25.11.0 - Release is now available This is a required update for Mainnet containing the scheduling for the upcoming Fusaka hardfork.
Highlights:
Adds Osaka, BPO1, and BPO2 fork times for Mainnet
Increases the Mainnet gas limit to 60M.
github.com/hyperledger/...
Highlights:
Adds Osaka, BPO1, and BPO2 fork times for Mainnet
Increases the Mainnet gas limit to 60M.
github.com/hyperledger/...
Release 25.11.0 · hyperledger/besu
25.11.0 - Fusaka Mainnet Release
ImportantThis is the Fusaka Mainnet-ready release. This is a mandatory update for Mainnet users.
Adds Osaka, BPO1, and BPO2 fork times for Mainnet
Increases the Ma...
github.com
November 5, 2025 at 4:05 AM
Besu 25.11.0 - Release is now available This is a required update for Mainnet containing the scheduling for the upcoming Fusaka hardfork.
Highlights:
Adds Osaka, BPO1, and BPO2 fork times for Mainnet
Increases the Mainnet gas limit to 60M.
github.com/hyperledger/...
Highlights:
Adds Osaka, BPO1, and BPO2 fork times for Mainnet
Increases the Mainnet gas limit to 60M.
github.com/hyperledger/...
Besu 25.10.0 - Release is now available
This is an optional update for Mainnet users. This is a recommended update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork. There will be another release before the Mainnet Fusaka hardfork.
This is an optional update for Mainnet users. This is a recommended update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork. There will be another release before the Mainnet Fusaka hardfork.
October 16, 2025 at 8:47 AM
Besu 25.10.0 - Release is now available
This is an optional update for Mainnet users. This is a recommended update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork. There will be another release before the Mainnet Fusaka hardfork.
This is an optional update for Mainnet users. This is a recommended update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork. There will be another release before the Mainnet Fusaka hardfork.
Besu 25.9.0 - Fusaka Testnet Release is now available
This is an optional update for Mainnet users.
This is a required update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork.
There is likely to be another release before Hoodi and maybe before Sepolia.
This is an optional update for Mainnet users.
This is a required update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork.
There is likely to be another release before Hoodi and maybe before Sepolia.
September 24, 2025 at 9:00 PM
Besu 25.9.0 - Fusaka Testnet Release is now available
This is an optional update for Mainnet users.
This is a required update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork.
There is likely to be another release before Hoodi and maybe before Sepolia.
This is an optional update for Mainnet users.
This is a required update for Holesky, Sepolia and Hoodi users for the upcoming Fusaka hardfork.
There is likely to be another release before Hoodi and maybe before Sepolia.
Besu 25.8.0 is now available
This is a required update for all users.
Highlights:
Performance updates
- Sync is faster
- Sync uses less memory and CPU
- Block creation is faster
Security updates
- Dependency updates inc fixing CVEs
Full release notes:
github.com/hyperledger/...
This is a required update for all users.
Highlights:
Performance updates
- Sync is faster
- Sync uses less memory and CPU
- Block creation is faster
Security updates
- Dependency updates inc fixing CVEs
Full release notes:
github.com/hyperledger/...
August 29, 2025 at 3:00 AM
Besu 25.8.0 is now available
This is a required update for all users.
Highlights:
Performance updates
- Sync is faster
- Sync uses less memory and CPU
- Block creation is faster
Security updates
- Dependency updates inc fixing CVEs
Full release notes:
github.com/hyperledger/...
This is a required update for all users.
Highlights:
Performance updates
- Sync is faster
- Sync uses less memory and CPU
- Block creation is faster
Security updates
- Dependency updates inc fixing CVEs
Full release notes:
github.com/hyperledger/...
Besu 25.7.0 is now available
This is an optional update. Please note the breaking changes.
Release Highlights:
* Gas limit increased to 45M by default
* History expiry enabled by default for new SNAP nodes
* Parallel transaction processing enabled by default
This is an optional update. Please note the breaking changes.
Release Highlights:
* Gas limit increased to 45M by default
* History expiry enabled by default for new SNAP nodes
* Parallel transaction processing enabled by default
July 3, 2025 at 8:39 AM
Besu 25.7.0 is now available
This is an optional update. Please note the breaking changes.
Release Highlights:
* Gas limit increased to 45M by default
* History expiry enabled by default for new SNAP nodes
* Parallel transaction processing enabled by default
This is an optional update. Please note the breaking changes.
Release Highlights:
* Gas limit increased to 45M by default
* History expiry enabled by default for new SNAP nodes
* Parallel transaction processing enabled by default
Besu 25.5.0 is now available.
This is an optional update.
Highlights
Changes to gas estimation algorithm for `eth_estimateGas` and `eth_createAccessList`
Add experimental profile for high spec nodes: increases rocksdb cache and enables parallel transaction processing
...
This is an optional update.
Highlights
Changes to gas estimation algorithm for `eth_estimateGas` and `eth_createAccessList`
Add experimental profile for high spec nodes: increases rocksdb cache and enables parallel transaction processing
...
May 26, 2025 at 12:46 AM
Besu 25.5.0 is now available.
This is an optional update.
Highlights
Changes to gas estimation algorithm for `eth_estimateGas` and `eth_createAccessList`
Add experimental profile for high spec nodes: increases rocksdb cache and enables parallel transaction processing
...
This is an optional update.
Highlights
Changes to gas estimation algorithm for `eth_estimateGas` and `eth_createAccessList`
Add experimental profile for high spec nodes: increases rocksdb cache and enables parallel transaction processing
...
latest EPF cohort is open for applications! blog.ethereum.org/2025/04/10/e...
EPF project ideas
An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu - hyperledger/besu
github.com
April 29, 2025 at 10:16 PM
latest EPF cohort is open for applications! blog.ethereum.org/2025/04/10/e...
📣 Besu 25.4.1 (Pectra Mainnet-ready) is now available 📣
This is a mandatory update, you must update your Mainnet node before the activation of Pectra scheduled for epoch 364032 on 07 May 2025 at 10:05:11 AM UTC.
github.com/hyperledger/...
Please note known issues.
Highlights in thread
This is a mandatory update, you must update your Mainnet node before the activation of Pectra scheduled for epoch 364032 on 07 May 2025 at 10:05:11 AM UTC.
github.com/hyperledger/...
Please note known issues.
Highlights in thread
Release 25.4.1 · hyperledger/besu
ImportantThis is the Pectra Mainnet-ready release.
This is a mandatory update, you must update your Mainnet node before the activation of Pectra scheduled for epoch 364032 on 07 May 2025 at 10:05:...
github.com
April 16, 2025 at 11:15 PM
📣 Besu 25.4.1 (Pectra Mainnet-ready) is now available 📣
This is a mandatory update, you must update your Mainnet node before the activation of Pectra scheduled for epoch 364032 on 07 May 2025 at 10:05:11 AM UTC.
github.com/hyperledger/...
Please note known issues.
Highlights in thread
This is a mandatory update, you must update your Mainnet node before the activation of Pectra scheduled for epoch 364032 on 07 May 2025 at 10:05:11 AM UTC.
github.com/hyperledger/...
Please note known issues.
Highlights in thread
Big news for #ethereum #developers, #network architects, and #blockchain #devop pros, the #besu certified professional exam is here!
Read the article for study tips, free resources, community support — and a 30% discount code (expires April 30).
www.lfdecentralizedtrust.org/blog/prepari...
Read the article for study tips, free resources, community support — and a 30% discount code (expires April 30).
www.lfdecentralizedtrust.org/blog/prepari...
Preparing for the Besu Certified Professional Exam: Tips, Resources, and a Discount Code
A guide to getting ready for the Besu certification exam plus a discount code
www.lfdecentralizedtrust.org
April 9, 2025 at 7:20 PM
Big news for #ethereum #developers, #network architects, and #blockchain #devop pros, the #besu certified professional exam is here!
Read the article for study tips, free resources, community support — and a 30% discount code (expires April 30).
www.lfdecentralizedtrust.org/blog/prepari...
Read the article for study tips, free resources, community support — and a 30% discount code (expires April 30).
www.lfdecentralizedtrust.org/blog/prepari...
Besu 25.3.0 is now available
This is a strongly recommended update for all users, including Mainnet.
It contains bug fixes, dependency and security updates.
Please note breaking changes, in particular for Windows users on public Ethereum.
Full release notes github.com/hyperledger/...
This is a strongly recommended update for all users, including Mainnet.
It contains bug fixes, dependency and security updates.
Please note breaking changes, in particular for Windows users on public Ethereum.
Full release notes github.com/hyperledger/...
Release 25.3.0 · hyperledger/besu
This is a strongly recommended update for all users, including Mainnet.
It contains bug fixes, dependency and security updates.
Highlights include:
Add Hoodi as new named testnet using --network=h...
github.com
March 18, 2025 at 8:01 AM
Besu 25.3.0 is now available
This is a strongly recommended update for all users, including Mainnet.
It contains bug fixes, dependency and security updates.
Please note breaking changes, in particular for Windows users on public Ethereum.
Full release notes github.com/hyperledger/...
This is a strongly recommended update for all users, including Mainnet.
It contains bug fixes, dependency and security updates.
Please note breaking changes, in particular for Windows users on public Ethereum.
Full release notes github.com/hyperledger/...
If you are running a Sepolia node, please update to latest Besu before 5 March 2025 at 17:29 ready for Pectra hardfork.
github.com/hyperledger/...
This includes a fix for an issue discovered during the Holesky fork. Updated required EL/CL versions for Sepolia:
blog.ethereum.org/2025/02/14/p...
github.com/hyperledger/...
This includes a fix for an issue discovered during the Holesky fork. Updated required EL/CL versions for Sepolia:
blog.ethereum.org/2025/02/14/p...
Release 25.2.1 · hyperledger/besu
25.2.1
This is a hotfix release for Pectra testnets (Holesky and Sepolia).
You need to update IF (and ONLY IF) you are running Besu on Holesky or Sepolia
Identical to 25.2.0 with one change:
Pectr...
github.com
March 4, 2025 at 4:39 AM
If you are running a Sepolia node, please update to latest Besu before 5 March 2025 at 17:29 ready for Pectra hardfork.
github.com/hyperledger/...
This includes a fix for an issue discovered during the Holesky fork. Updated required EL/CL versions for Sepolia:
blog.ethereum.org/2025/02/14/p...
github.com/hyperledger/...
This includes a fix for an issue discovered during the Holesky fork. Updated required EL/CL versions for Sepolia:
blog.ethereum.org/2025/02/14/p...
Direct from #ETHDenver - Modular Chains Beget Modular Clients - www.youtube.com/watch?v=g9Lb...
Modular Chains Beget Modular Clients | Justin Florentine - Besu
YouTube video by ETHDenver
www.youtube.com
March 4, 2025 at 4:37 AM
Direct from #ETHDenver - Modular Chains Beget Modular Clients - www.youtube.com/watch?v=g9Lb...
Hot off the press from #EthDenver - www.youtube.com/watch?v=NAAy...
Parallelizing EVM Transaction Processing | Gary Schulte - Besu
YouTube video by ETHDenver
www.youtube.com
March 4, 2025 at 4:36 AM
Hot off the press from #EthDenver - www.youtube.com/watch?v=NAAy...
Hotfix Besu Pre-release - only needed if you're running on Holesky github.com/hyperledger/...
Release 25.2.1 · hyperledger/besu
25.2.1
This is a hotfix release for Pectra testnets (Holesky and Sepolia).
You need to update IF (and ONLY IF) you are running Besu on Holesky or Sepolia
Identical to 25.2.0 with one change:
Pectr...
github.com
February 25, 2025 at 12:46 AM
Hotfix Besu Pre-release - only needed if you're running on Holesky github.com/hyperledger/...
Heading to #EthDenver? Don't miss Gary Schulte from @besuofficial.bsky.social with the latest on EVM parallelization! ethdenver.com/sessions/rec...
Hint - we've done a lot since this blog post www.lfdecentralizedtrust.org/blog/introdu...
Hint - we've done a lot since this blog post www.lfdecentralizedtrust.org/blog/introdu...
ETHDenver 2025 - The Regenerates
ethdenver.com
February 23, 2025 at 11:41 PM
Heading to #EthDenver? Don't miss Gary Schulte from @besuofficial.bsky.social with the latest on EVM parallelization! ethdenver.com/sessions/rec...
Hint - we've done a lot since this blog post www.lfdecentralizedtrust.org/blog/introdu...
Hint - we've done a lot since this blog post www.lfdecentralizedtrust.org/blog/introdu...
Heading to #EthDenver? Don't miss Justin Florentine from @besuofficial.bsky.social with the latest on modular Ethereum clients. www.ethdenver.com/sessions/rec...
ETHDenver 2025 - The Regenerates
www.ethdenver.com
February 23, 2025 at 11:29 PM
Heading to #EthDenver? Don't miss Justin Florentine from @besuofficial.bsky.social with the latest on modular Ethereum clients. www.ethdenver.com/sessions/rec...
Besu 25.2.0 now available
This is a required update for Holesky and Sepolia users for Pectra.
Pectra is scheduled for:
Holesky: Mon, Feb 24 at 21:55:12 UTC
Sepolia: Wed, Mar 5 at 07:29:36 UTC
Release notes inc breaking changes: github.com/hyperledger/...
This is a required update for Holesky and Sepolia users for Pectra.
Pectra is scheduled for:
Holesky: Mon, Feb 24 at 21:55:12 UTC
Sepolia: Wed, Mar 5 at 07:29:36 UTC
Release notes inc breaking changes: github.com/hyperledger/...
Release 25.2.0 · hyperledger/besu
This is an optional update for Mainnet users. This is a required update for Holesky and Sepolia users for the upcoming Pectra hardfork.
Pectra scheduled for:
Holesky: Mon, Feb 24 at 21:55:12 UTC
S...
github.com
February 21, 2025 at 3:16 AM
Besu 25.2.0 now available
This is a required update for Holesky and Sepolia users for Pectra.
Pectra is scheduled for:
Holesky: Mon, Feb 24 at 21:55:12 UTC
Sepolia: Wed, Mar 5 at 07:29:36 UTC
Release notes inc breaking changes: github.com/hyperledger/...
This is a required update for Holesky and Sepolia users for Pectra.
Pectra is scheduled for:
Holesky: Mon, Feb 24 at 21:55:12 UTC
Sepolia: Wed, Mar 5 at 07:29:36 UTC
Release notes inc breaking changes: github.com/hyperledger/...
Here's a recap of the amazing things Besu achieved in 2024 and a look ahead to 2025... 🧵 #ethereum #besuofficial
February 21, 2025 at 2:38 AM
Here's a recap of the amazing things Besu achieved in 2024 and a look ahead to 2025... 🧵 #ethereum #besuofficial