Ethereum Validators Confirm Block 25 Million After Nearly 11 Years of Runtime

The distinction matters: the base layer has never fully stopped globally for an extended stretch, but it has experienced some degraded performance, some client failures, and finalization gaps over its history.

Under proof-of-stake (PoS), which Ethereum adopted at the Merge in September 2022, the network targets one block every 12 seconds. Before the Merge, under proof-of-work ( ), average block times ran between 13 and 15 seconds. That pace has generated roughly 7,000 blocks per day in recent months, with each block bundling transactions, usage data, base fees, and validator rewards into a cryptographically linked record.

Each block proposed under goes through a slot of approximately 12 seconds and reaches finality after two epochs, a process that takes about 15 minutes. Block 25,000,000 followed the same path, finalized by validator consensus without intervention from any central authority.

The network‘s size now runs into hundreds of gigabytes, with tens of millions of locked in . ( ) solutions continue to carry a growing share of Ethereum’s transaction , though some networks built on Ethereum have experienced their own clear outages. The development roadmap includes plans for single-slot finality, which would compress the current 15-minute finalization window to a single 12-second slot.

Ethereum has processed through several major protocol upgrades over its history, including London, which introduced and base fee burning; Shanghai, which enabled withdrawals; and Dencun, which added blob-carrying transactions to support data availability. Each upgrade passed through the network while block production continued.

At current production rates, Etherscan and Beacon Chain explorers were already showing blocks in the range of 25,000,395 shortly after the milestone block was confirmed.

s Ride to 1 Million Blocks

Meanwhile, is tracking its own round-number milestone. As of May 1, 2026, the sat at approximately block 947,491, leaving roughly 52,509 blocks before block 1,000,000.

Bitcoin averages about 144 blocks per day, one every 10 minutes or so, with averages at times running slightly faster at around nine minutes per block or slower than the 10-minute trajectory. At that pace, the network is on track to reach block 1,000,000 sometime in mid-to-late 2027, roughly 364 days out.

Block 1,000,000 carries no protocol significance for Bitcoin. It does not trigger a halving, an upgrade, or any change to consensus rules. Halvings occur at every 210,000-block interval; the next one, which will cut the block reward to 1.5625 BTC, is scheduled for block 1,050,000, placing it approximately two years away.

The Bitcoin genesis block was mined by Satoshi Nakamoto in January 2009. The network has maintained a strong uptime record across that span, similar to the resilience Ethereum has demonstrated over its own block history. Bitcoin stats show an uptime of around 99.99026572226% since launch.

Both milestones reflect how decentralized networks accumulate history block by block, without a central operator deciding when or whether they continue.