December 16, 2025
Ethereum

Ethereum’s Vitalik Buterin applauds Polygon for pioneering ZK technology

He has praised Polygon and founder Nailwal for their contribution to Ethereum’s scalability. Buterin highlighted Polygon’s early leadership in zero-knowledge technology. Nailwal has participated in various humanitarian acts, including funding Balvi’s pandemic research. The cryptocurrency market remains weak as Bitcoin’s fundamentals continue to weaken. Amid the uncertainty, Vitalik Buterin has taken it to X to

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Ethereum

Secured no. 1 | Ethereum Foundation Blog

Earlier this year, we launched a bug bounty program focused on finding issues in the beacon chain specification, and/or in client implementations (Lighthouse, Nimbus, Teku, Prysm etc…). The results (and vulnerability reports) have been enlightening as have the lessons learned while patching potential issues. In this new series, we aim to explore and share some

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Ethereum

Grantee Roundup: August 2021 | Ethereum Foundation Blog

It’s always fun to hear about new grants as they’re awarded, but what happens after the announcement? In this series, we’ll check in on a couple of projects that are well underway – or already at the finish line. Read on to learn about some recent milestones and achievements by grantees! Imapp for EVM Gas

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Ethereum

Finalized no. 29 | Ethereum Foundation Blog

Altair is here; the Merge is coming. tl;dr Altair upgrade, Oct 27 Altair, the first mainnet upgrade to the Beacon Chain, has been scheduled for epoch 74240 (Oct 27, 2021, 10:56:23am UTC). A subtle but great advantage of proof-of-stake is that we can precisely time upgrades (Sorry Tim! We’ll be done with proof-of-work soon 😉)

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Ethereum

Ethereum.org Translation Program: Milestones and Updates

The ethereum.org Translation Program has been live for over two years, and we are excited to share a couple of milestones we have hit since its inception, as well as some of our plans for the future. Since we launched the initiative in 2019, over 2,000 community members have contributed, translating a total of 2.8

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Ethereum

Altair Mainnet Announcement | Ethereum Foundation Blog

The Altair beacon chain upgrade is ready to be activated on the Ethereum mainnet. The upgrade will go live at epoch 74240 (Oct 27, 2021, 10:56:23am UTC). Client Versions In order to be compatible with the Altair upgrade, beacon node operators must update the client version that they run. If you run a validator, you

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Ethereum

Amphora: A Major Merge Milestone

Earlier this year, the Rayonism hackathon kicked off to protoype the architecture for Ethereum’s transition to proof of stake. The transition, often refered to as The Merge, will keep the existing beacon chain (eth2) and execution layer (eth1) clients, and “merge” both chains by making the beacon chain drive the execution layer’s consensus. This approach

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Ethereum

Finalized no. 30 | Ethereum Foundation Blog

tl;dr Altair is fast approaching. Upgrade your nodes! Now! 🚨Upgrade to Altair before Oct 27🚨 As mentioned in the previous Finalized post, Altair is scheduled to go live at epoch 74240 — Oct 27, 2021, 10:56:23am UTC. See the Altair Mainnet Announcement for details on who, how, and why. Suffice it to say here that

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Ethereum

Grantee Roundup: September 2021 | Ethereum Foundation Blog

It’s always fun to hear about new grants as they’re awarded, but what happens after the announcement? In this series, we’ll check in on a couple of projects that are well underway – or already at the finish line. Read on to learn about some recent milestones and achievements by grantees! SSZ.dev: Technical Specs and

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Ethereum

Finalized no. 31 | Ethereum Foundation Blog

This issue of Finalized is dedicated to the contextualization of a recently published paper describing three possible attacks on Ethereum’s proof-of-stake algorithm. tl;dr These are serious attacks with a formally-analyzed, technically-simple mitigation. A fix will be rolled out prior to the Merge and will not delay Merge timelines. Forkchoice attacks, mitigations, and timelines There has

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