Core implementation of @ethereum protocol, a product of @Offchain. We are hiring jobs.lever.co/offchainlabs/7…
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Release v7.1.4 is now live.
This is a maintenance release with significant progress on the Gloas implementation alongside important production fixes and performance improvements.
- Major memory savings: validator state size cut nearly in half, reducing mainnet RAM usage by ~300–450 MB.
- Fixed CPU spikes caused by sync committee duty calculations.
- Fixed newly activated validators missing their first attestation.
- Fixed incorrect -monitor-indices reporting.
- Fixed a crash related to pruned checkpoint blocks.
Improved experimental state diff support (-enable-state-diff).
Operators are encouraged to update at their convenience.
You can find the v7.1.4 release here:
github.com/OffchainLabs/prys…
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Introducing our next test network release:
💎 The Topaz Testnet 💎
☑️ 32 ETH deposits
☑️ Full mainnet configuration
☑️ Latest ETH2 phase 0 spec v0.11.1
☑️ Built on Goerli 💪
☑️ 70+ contributors
Send your test deposits now!
Genesis in a few days🧑💻
medium.com/prysmatic-labs/in…
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We are announcing v4.0.3-hotfix. This release contains the optimization to prevent the beacon node from high resource usage during turbulent times. It is highly recommended to upgrade if your node is under heavy usage.
See release notes for more info: github.com/prysmaticlabs/pry…
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💎 Prysm Phase 0 Testnet is here! 💎
link.medium.com/KVdUo22VuW
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Here is what happened to the Medalla testnet this past weekend, along with root cause analysis and our detailed plans moving forward.
medium.com/prysmatic-labs/et…
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Introducing our next test network release:
💎The Onyx Testnet💎
✔️32 ETH deposits
✔️Full mainnet configuration
✔️Latest ETH2 phase 0 spec v0.12.1
✔️Multiclient ready
✔️80+ contributors
Send your test deposits now! 📨
Genesis in a few days ⏰
medium.com/prysmatic-labs/in…
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The latest development update is out! We are getting very close to a Prysm test net! 💎medium.com/prysmatic-labs/et…
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Latest sharding update is out!
💎 Rebranding as an ethereum 2.0 team, renaming from geth-sharding to Prysm
💎 Latest merged code, pull requests, and issues
💎 Discussion on upcoming work
💎 New grant from Wanxiang Blockchain Labs @WXblockchain medium.com/prysmatic-labs/et…
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🎉 We are proud to promote Prysm to v1.0.0, it is ready for mainnet on December 1st, 2020
Check release notes for changes:
github.com/prysmaticlabs/pry…
Follow our doc portal for guides:
docs.prylabs.network/docs/ma…
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New release alert!
We are announcing v4.0.4. This release contains many optimizations since the last one. This is the first full release following the recent mainnet issue. It's highly recommended to upgrade to his release immediately.
Release notes: github.com/prysmaticlabs/pry…
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🚨 Attention Prysm + Geth users! 🚨
Please hold off on updating Geth to v1.13.0 A bug has been identified in Geth that interferes with block production from Prysm.
Note: While most clients don't need local production with mev-boost, Prysm always validates against the local block. More updates on this later
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🥁🥁🥁 bi-weekly update is out! In this update we went over:
💎 Latest merged code, pull requests, and issues
💎 Future work
💎 Eth2.0 client implementers call #1
medium.com/prysmatic-labs/et…
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New week, new development updates! This week:
🔸Massive bug fixes & efficiency improvements
🔸Optimize LMD GHOST fork choice rule
🔸New benchmark numbers
🔸Simple Serialize Caching
🔸Integrating spec v0.6 to run time, and more!
medium.com/prysmatic-labs/et…
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Introducing our new video series: Core Notes from Core Devs!
Catch the Ethereum core developers at @offchain discuss the latest happenings in Ethereum development.
This week we talk about the Pectra upgrade including upcoming preparations for devs and changes in store for users.
Time stamps:
0:09 What's one thing from the past two weeks of developments that you wish every Ethereum user understood better?
1:00 What does the Prysm team think about block builder specifications and does this differ from other teams?
2:07 What does the team think is the best approach to upgrading testnets?
3:52 Looking at the timeline discussions from the call, which changes in the coming months excite you the most?
6:23 We want your feedback!
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🐼v3.0.0 is here🐼
This is our mainnet merge release! All mainnet users MUST upgrade to the v3.0.0 release before the Bellatrix fork by Sep 6, 2022. Please visit release notes and documentation for further details ❤️
github.com/prysmaticlabs/pry…
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New release drop!
v4.0.5 is a strongly recommended release with many significant optimizations. Release notes: github.com/prysmaticlabs/pry…
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We have released Prysm v4.0.2. It includes a critical fix when the validator interacts with mev-boost. It's mandatory to upgrade if you are running mev-boost. V4.0.2 also contains misc optimizations and fixes. See release notes for detail. github.com/prysmaticlabs/pry…
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📣 Latest development update is here! medium.com/prysmatic-labs/et…
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🚨 Please update Prysm to v1.3.8-hotfix-6c0942
This release contains two critical fixes to resolve on-going issues in mainnet
See release note for further details and the full retrospective will be coming in the next few days
github.com/prysmaticlabs/pry…
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💎New release alpha.22 is up 💎
Thread ⬇️
github.com/prysmaticlabs/pry…
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We are pleased to announce that we’ve selected @Quantstamp as our vendor for our first Prysm security audit! We received so many amazing proposals and met with many teams over the last two weeks. @Quantstamp really stood out to us and we are really excited to work with them!
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Gm fam! Our community update is back! Get it while it's fresh. Merge 🔜
medium.com/prysmatic-labs/pr…
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Prysm Release 5.2.0 has arrived!
Note that this is mandatory for all validator clients using mev-boost with a gas limit increase and highly recommended for all other clients, especially for users running v5.1.1 or v5.1.2.
Some notable fixes and features in this release:
1. QUIC is enabled by default. This is a UDP based networking protocol with default port 13000.
2. This release has some improvements for raising the gas limit, but there are known issues with the proposer settings file provided gas limit not being respected for mev-boost outsourced blocks.
3. Signaling an increase for the gas limit now works perfectly for local block production.
4. Prysm can reuse blobs from the EL via engine_getBlobsV1 to potentially save bandwidth
Check out GitHub for more details or join the conversation on Discord.
github.com/prysmaticlabs/pry…
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💎New release beta.1 is up💎
See release page for notable changes:
github.com/prysmaticlabs/pry…
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Read this and get ready for the merge! 🐼
link.medium.com/5oWxIxjkTsb
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Prysm client validators can now process blocks with 36M gas limits (up from 30M).
This technical improvement enables greater network throughput while maintaining our commitment to decentralized, community-driven infrastructure.
Building a better Ethereum.
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Gm! We are releasing v3.1.1. It contains a fork choice bug fix which could lead to a memory leak and a gossipsub optimization. It's highly recommended you upgrade to this before the merge:
github.com/prysmaticlabs/pry…
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Announcing v4.0.0 for the upcoming Shapella upgrade!
This release is mandatory for all the mainnet beacon nodes and validators. You must upgrade before April 12. See release notes for further detail.
github.com/prysmaticlabs/pry…
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An update on the mainnet block proposal incident!
The @prylabs team believes the incident is an extremely rare edge case. We have identified a potential solution, but we are working on increasing confidence to the highest level before issuing any emergency release.
Thread 👇
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New Prysm Release V4.2.0🎉
Highly recommended upgrade! Now includes support for Cancun on Goerli. Details: github.com/prysmaticlabs/pry…
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🎉New Prysm release v3.2.1🎉
This is our first official release for supporting the upcoming Capella / Shanghai network upgrade. It’s *mandatory on Sepolia testnet* & *recommended on Mainnet*. Change log & release binaries: github.com/prysmaticlabs/pry…
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Announcing Prysm v5.0.0 with official Deneb support on Ethereum mainnet!
Release notes for details:
github.com/prysmaticlabs/pry…
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Earlier today, Prysm Beacon Nodes were unable to produce blocks for a period of 18 epochs (~2hours). This incident was widespread and resolved itself without intervention. Here's an initial update on our investigation.
Thread👇
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🚀Calling all Ethereum solo stakers!
🌐Participate in the @ethStaker survey and shape the future of solo staking. It takes less than 15 mins and fully anonymous.
🔗Survey link: stakinglandscape.limesurvey.… ✅ Available in English, Mandarin, Spanish, & Italian. Whether you're on cloud, bare metal, or a SaaS client, your insights are crucial!
💬Be opinionated or easy going – your experience matters! #Ethereum #Staking #Blockchain #CryptoCommunity
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💎New release alpha.23 is up 💎
This release stabilizes the sync process, and has number of critical fixes (see full release notes below)
github.com/prysmaticlabs/pry…
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Prysm release v5.3.0 is here!
Updating to this release is required for Holesky and Sepolia operators and it is recommended for mainnet users
This release includes support for Pectra activation in the Holesky and Sepolia testnets! It also contains many fixes for Electra that have been found in rigorous testing through devnets in the last few months.
Two notable features in this release:
1. There is a new file layout structure for storing blobs. Rather than storing all blob root directories in one parent directory, blob root directories are organized in subdirectories by epoch. This should vastly decrease the blob cache warmup time when Prysm is starting.
2. A feature which allows for the beacon database to remain a constant size once it reaches enough history to cover the weak subjectivity period
Check out GitHub for more details or join the conversation on Discord.
github.com/prysmaticlabs/pry…
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Monthly update is out. Exciting times ahead! 💎
link.medium.com/4rRnInDNJgb
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March development update 💎
medium.com/prysmatic-labs/et…
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New Prysm release v4.0.8 🎉
This release is recommended. See release notes for details: github.com/prysmaticlabs/pry…
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💎New release alpha.29 is up💎
See release page for notable changes
github.com/prysmaticlabs/pry…
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Excited to announce v4.1.0! 🎉
- Deneb foundational support
- Reduced memory via Multi-Value Slices
- EIP-4881 for optimized block processing
- BLST 0.3.11 boosts portable build performance
- Multiarch Containers Preview live
Release notes: github.com/prysmaticlabs/pry…)
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Prysm pre-genesis patch release!
- Several fixes in Prysm's UI
- Added more default bootnodes
- Updated go-ethereum version
- Log improvements
- And more
We recommend users update to this version. Please read the release notes:
github.com/prysmaticlabs/pry…
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We have a patch release out! 🛠️
Update to v4.1.1 to resolve the issues mentioned in the notes below: github.com/prysmaticlabs/pry…
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Prysmatic Labs is seeking an external security assessment of Prysm! If your team conducts security audits and are familiar with ETH2, send us an email!
medium.com/prysmatic-labs/pr…
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🎉 New release v1.1.0 and it includes several significant changes.
Updating to this release is recommended at your earliest convenience, it is important to read the release notes before upgrading.👇
github.com/prysmaticlabs/pry…
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New release drop!
v4.0.6 highly recommended to upgrade with bug fixes and optimizations to shorten block proposal time under various edge cases. Highlights: github.com/prysmaticlabs/pry…
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The post mortem for the Shapella incident is out: arbitrum.notion.site/17-rela…
Please don't hesitate to reach out with any questions
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📣Release day! v2.0.0 is here!
⚠️You must update your prysm node and validator to v2.0.0 before Oct 27, 2021 or you will fork from rest of the network!
Full change list is available here: github.com/prysmaticlabs/pry…
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Prysm v2 changes summarized below👇🏻 Everything you need to know with Altair hard fork, new slasher and more
Exciting times ahead! 💎
link.medium.com/qPnUKeHIoib
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We have a new release v3.1.2! 🎉
This release includes several bug fixes and improvements since the merge. We recommend upgrading at your earliest convenience!
Release notes: github.com/prysmaticlabs/pry…
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The Topaz Testnet Launch Party will be hosted by /r/ethstaker tomorrow at 7:30pm ET!
Join us as we celebrate the genesis of our latest testnet release!
teddit.net/r/ethstaker/comme…
The Topaz Testnet from @prylabs now has a genesis time of April 18th, 2020 at 00:00:00 UTC!
In this genesis, we accepted around 5000 external deposits from users in our discord. Wow! 🤯
Should we have a virtual launch party?
timeanddate.com/counters/ful…
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New Prysm release v4.0.7 with lots of great optimizations! 🎉
It is highly recommended to upgrade. Release notes with more details: github.com/prysmaticlabs/pry…
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🐼Gm! We are excited to announce v3.1.0. It contains several bug fixes from v3.0.0. It's highly recommended to upgrade to v3.1.0 before the merge date. Release note for more info: github.com/prysmaticlabs/pry…
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Excited to release v5.0.2 with loads of optimizations, UX upgrades, and bug fixes!
We strongly recommend all operators upgrade as soon as possible!
github.com/prysmaticlabs/pry…
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Prysm release v1.0.5 🎉
Updating to this release is highly recommended
Notable changes:
- Reduced disk I/O in validator client
- libp2p updated to 0.12.0
- Fallback option for eth1 nodes
See release notes for full change log: github.com/prysmaticlabs/pry…
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🎉 Special update. 50th biweekly put together by amazing @0xKiwi_
* Schreis Testnet 🌇 Witti Testnet 🌅
* Finality incidents reports
* Improvements on p2p networking, slasher and more!
* Ongoing progress with v0.12 and custom chain config testing
medium.com/prysmatic-labs/et…
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Gm. Announcing v4.0.3 with some important bug fixes for users with the mev-boost code path and key manager.
Recommended upgrade for everyone, but it especially improves those two areas of the application.
Notes and change list can be found here: github.com/prysmaticlabs/pry…
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Our new post summarizes we have accomplished in 2020 and what we have in the pipeline for 2021 ✨
medium.com/prysmatic-labs/pr…
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New release v2.1.0 is here! 🎉
- Bellatrix (merge) support 🐼
- Web3signer support 🔑
- Early weak subjectivity sync support ⛓️
- Vectorized sha256 optimizations 🔥
- ... and many more optimizations + bug fixes!
github.com/prysmaticlabs/pry…
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Prysm v1.3.7 release 🎉
This release contains bug fixes including changes to default cryptography library and upcoming changes for Altair network upgrade.
Updating to this release is strongly recommended.
github.com/prysmaticlabs/pry…
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Prysm release v5.3.1 is here!
Testnet operators are strongly encouraged to update to this release. There are many fixes and improvements from the Holesky upgrade incident. Mainnet operators are recommended to update to this release at their regular cadence.
This release is packed with critical fixes for Electra and some important fixes for mainnet, too.
Notable features in this release:
- Ensuring that deleting a block from the database clears its entry in the slot->root db index. This issue was causing some operators to have a bricked database, requiring a full resync.
- Updated go to go1.24.0.
- Added a feature flag to sync from an arbitrary beacon block root at startup.
- Updated default gas limit from 30M to 36M. Override this with -suggested-gas-limit= in the validator client.
Check out GitHub for more details or join the conversation on Discord.
Discord:discord.com/invite/prysmatic…
Github:github.com/prysmaticlabs/pry…
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Our recommendation for Fusaka: hackmd.io/@ttsao/fusaka-prys…
TLDR:
- Smaller, faster forks to keep up w/ momentum
- Target a small Fusaka fork by end of Q3, only PeerDAS
- If slips, shift to H1 2026 & expand scope
- Bigger fork would include ePBS & FOCIL for scalability & CR
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We are excited to announce that we have received a grant from the @EF_ESP to continue our work on Prysm. Check out this post for more details!
blog.ethereum.org/2020/09/08…
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Check out our latest biweekly update! We have...
💎 Implemented proposer & attester responsibilities, RPC validator interactions and minimal beacon chain processing & fork choice
💎 Benchmarked various DBs
💎 Watch implementer call #3 if you haven't!
medium.com/prysmatic-labs/et…
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💎New release beta.0.rc is up💎

See release page for notable changes:
github.com/prysmaticlabs/pry…
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💎New release alpha.25 is up💎
See release page for notable changes
github.com/prysmaticlabs/pry…
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💎New release alpha.28 is up💎
See release page for notable changes
github.com/prysmaticlabs/pry…
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Our first release including a local demo of Ethereum 2.0 so far, is live! medium.com/prysmatic-labs/et…
Come check out the following:
💎 Spin up a beacon chain node from a genesis config
💎 Connect a validator to the beacon node
💎 Validator gets shuffled into a shard and slot
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- 0/ Prysmatic Labs is currently hiring for embedded security engineer and software development engineer in test (SDET) roles to work on our Ethereum proof of stake implementation, Prysm
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Prysm Release v5.1.2 is here with improvements and new features!
1. The feature flag --enable-experimental-state has been flipped to "opt out" via --disable-experimental-state, bringing significant memory usage improvements at runtime.
2. Updates to libp2p’s gossipsub for better bandwidth stability and support for IDONTWANT control messages
3. The gRPC gateway has been deprecated. For JSON data, please switch to the standardized beacon-APIs
4. This is our first release utilizing pull request authors' entries directly from our CHANGELOG.md
5. This also contains a hotfix for a bug in the implementation of the beacon api streaming events endpoint of 5.1.1.
It's recommended to update to v5.1.2 at your convenience.
Check out GitHub for more details or join the conversation on Discord.
github.com/prysmaticlabs/pry…
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New release 5.0.3! This is a patch release with enhancements and bug fixes.
It is recommended for those on versions 5.0.0 or 5.0.1 to upgrade.
github.com/prysmaticlabs/pry…
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We have a new release v3.2.0! 🎉
New API endpoints! new optimizations! and new bug fixes! Get it while hot!
Release notes: github.com/prysmaticlabs/pry…
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0/ We are now hiring a remote, full-time, frontend and UX software engineer to work on the software behind the eth2 blockchain. Come join us prysmaticlabs.com/careers #Typescript #UX #Ethereum
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Prysm patch release v1.0.4 🎉
This optional release includes features like runtime db backup, load graffitis from file, sync improvements and more…!
See release notes for full change log: github.com/prysmaticlabs/pry…
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📣Prysm pre-genesis minor patch release!
This minor patch release includes two bug fixes.
- Better lookback period for initial sync
- Handle missing block metadata better
Updating to this release is recommended prior to genesis. Full change log:
github.com/prysmaticlabs/pry…
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New release v2.1.2 is here! 🎉
- Updated to Golang v1.18.1
- Updated to go-libp2p v0.18.0
- Important bug fixes
- Enable a lot of useful optimizations which has been in internal testing for months
See release notes: github.com/prysmaticlabs/pry…
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💎June development update💎
link.medium.com/5XjHBlwUHhb
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Latest development update! Made progresses on RANDAO, validator rotation, BLS signature aggregation and more! medium.com/prysmatic-labs/et…
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Prysm v1.2.2 release 🎉
This release includes several performance improvements that are important given the increasing state size. Updating to this release is highly recommended at your earliest convenience.
github.com/prysmaticlabs/pry…
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December update is out! 💎
link.medium.com/iYclvawtXlb
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💎New release alpha.24 is up💎
See release page for notable changes
github.com/prysmaticlabs/pry…
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⚠️Users using mev-boost must to upgrade to 4.0.2 urgently to stop missing blocks!
If you are unable to upgrade at this time, you can disable mev boost but make sure to disable builder in your proposer-settings flags on the validator client.
We have released Prysm v4.0.2. It includes a critical fix when the validator interacts with mev-boost. It's mandatory to upgrade if you are running mev-boost. V4.0.2 also contains misc optimizations and fixes. See release notes for detail. github.com/prysmaticlabs/pry…
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Announcing v2.1.4. This is our last v2 release before v3. The Merge is coming soon! 🐼
github.com/prysmaticlabs/pry…
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Prysm client contributors are unmatched.
🥂 to scaling @ethereum together
Our team is working on scaling @ethereum, and if you thought blobs we’re an unlock, wait till you see what PeerDAS (Data Availability Sampling) can do.
Take a read through @manunalepa’s book for a brief history of blobs and how PeerDAS pushes scaling even further.
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New dev updates! lots on beacon chain and geth-sharding repo!
🔹Research notes leading up to the beacon chain
🔹Removing go-ethereum codebase & introducing bazel
🔹Integrating the beacon chain with the geth-sharding repo
🔹Libp2p work for ruby release
medium.com/prysmatic-labs/et…
Ethereum Sharding Biweekly Development Update #8 — Prysmatic Labs
Latest Research Updates
medium.com 2
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Prysm team recommends EIP-7732 for Glamsterdam headliner: hackmd.io/@tchain/prysm-glam…
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gm @LidoFinance, we are confirming our team is joining Lido as a Node Operator, "Prysmatic Labs", with address 0x3bF3A9260fE18A1239767aC6F0F0bc7c1E5d1cBC
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Prysm v1.3.1 release 📣
This patch release contains an important fix for an issue in v1.3.0 where some validator databases could not be upgraded
Upgrading to this patch is only recommended for validator databases that managed many validating keys
github.com/prysmaticlabs/pry…
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We are now hiring a remote, full-time, Go software engineer to work on the software behind the eth2 blockchain. Come join us prysmaticlabs.com/careers #Golang #Ethereum
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💎New release beta.3 is up💎
See release page for changes:
github.com/prysmaticlabs/pry…
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Latest biweekly update!
💎Prylabs at Devcon, did you see us?
💎Attestation aggregation!
💎41 Merged PRs (not goofing off at devcon)
💎Faster epoch processing
💎SSZ is better than ever
💎Getting dirty with Phase 2
medium.com/prysmatic-labs/et…
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Prysm patch release v1.0.3!
This release includes a fix that prevented users from proposing when setting up their validator accounts through certain workflows like DAppNode
Updating to this release is required if your validator is missing block proposal
github.com/prysmaticlabs/pry…
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New Prysm docs page is now live!
Find all helpful resources and guides below 👇
offchainlabs.com/prysm/docs
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Gm Sepolia testnet node operators! ☀️
Shapella hard fork is tomorrow! (2/28/2023, 4:04:48 AM UTC) 🍴
We have a new release that's ONLY for Sepolia testnet. Please do not use this release on Mainnet and other testnets. See release notes for more details.
github.com/prysmaticlabs/pry…
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Gm Goerli node operators! We got a new release! ☀️
Shanghai / Capella hard fork is coming soon! (March 14 10:25:36 pm) 🍴
We have a new release that's mandatory for Goerli testnet, and low priority for mainnet.
See release notes for more details.
github.com/prysmaticlabs/pry…
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📢 New release alert!
v2.1.3-rc.0 is available. It's only intended for testnets with full support for the Ropsten beacon chain. See release notes for detail github.com/prysmaticlabs/pry…
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Prysm v1.4.4 is out! 🎉

This is an encouraged update for mainnet beacon nodes and validators
See release note for more detail: github.com/prysmaticlabs/pry…
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Prysm V2.0.0-rc.0 is out! 🎉
This is a REQUIRED update for all pyrmont nodes in ~3 days
This is NOT intended for current mainnet
See release note for more detail:
github.com/prysmaticlabs/pry…
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Time for a bi-weekly development update!
💎Sharding and Casper Being Merged Through a Full PoS, Random Beacon Chain
💎Simulator and Sync Services
💎Handling Collation Data Requests Between Nodes
💎Validator Registration Contract for Beacon Chain
medium.com/prysmatic-labs/et…
Ethereum Sharding Biweekly Development Update #7 — Prysmatic Labs
Latest Research Updates
medium.com 3
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