The DAO Split and the 2026 Censorship Resistance Fight

The 2016 DAO hack and the code is law schism

The DAO raised over $150 million in Ether from more than 11,000 investors during its 2016 token sale. On June 17, 2016, an attacker exploited a recursive call vulnerability in the smart contract code. This exploit siphoned 3.6 million Ether, worth $50 million at the time, into a child DAO. The DAO held approximately 14% of all Ether in circulation. The vulnerability involved a flaw in the smart contract that allowed functions to be called back before the first execution completed. Members of the community debated the ethics of the attack because the exploit did not violate the rules as coded. Griff Green organized a volunteer group called The White Hat Group to recoup funds before more wallets were hacked. The stolen funds were moved into an account subject to a 28-day holding period under the terms of the Ethereum smart contract. Most participants favored a hard fork to restore approximately all funds to the original contract. This decision split the blockchain on July 20, 2016, at block 1,920,000. Ethereum reversed the hack to return funds to original owners. Ethereum Classic maintained the original, unaltered transaction history. Proponents of Ethereum Classic adhered to the "Code is Law" principle. They argued that social consensus should not override the immutable history of the blockchain.

MEV relays and the struggle for neutrality

Censorship concerns returned to the foreground in August 2022 when the US Office of Foreign Assets Control sanctioned the Tornado Cash mixing service. Major service providers and MEV-Boost relays like Flashbots immediately complied by excluding transactions tied to sanctioned addresses. In late 2022, roughly 70% of proposed blocks routed through relays enforcing sanctions screening. The reliance on OFAC-compliant relays in 2022 created a massive threat to the network integrity. However, market forces pushed the market toward neutrality. In August 2026, neutral relays accounted for more than 70% of blocks, while Flashbots, which dominated the market immediately after the 2022 Merge, produced only 2.4% of blocks in a 24-hour window near the end of August 2026.

The shift toward neutral relays follows a four-year retreat from the censorship peak. Validators select whichever relay returns the highest-paying block, which favors neutral relays that include all transactions. In late 2022, the compliant share reached 80% depending on the count. By May 2023, the daily share of OFAC-compliant blocks dropped to 27% or 29% depending on the report. Non-conforming transactions still landed on-chain 99.52% of the time, versus 95.32% for OFAC-screened flow.

Pectra era priorities and censorship resistance

The Pectra upgrade, which combines the Prague execution layer and Electra consensus layer, addresses these protocol vulnerabilities. You already know that validator management requires efficiency. EIP-7251 increases the maximum effective balance for validators from 32 ETH to 2,048 ETH. This change reduces networking pressure as the number of validators exceeds 1 million. The "Harden the L1" track, led by Fredrik Svantes, Parithosh Jayanthi, and Thomas Thiery, focuses on protocol resilience. This work includes research into FOCIL and censorship resistance for blobs. The community focuses on protecting the network against regulated entities in the block-building process. Pectra includes 20 EIPs, though the scope remains a source of controversy. The first part of the upgrade includes eight EIPs that developers already tested on devnets. EIP-7702 enables temporary smart contract functionality for Externally Owned Accounts to improve user experience. The gas limit grew from 30 million to 60 million. The decision to prioritize censorship resistance makes the Pectra upgrade a direct response to years of centralization risks. Will the current momentum toward neutral block building hold against future regulatory pressure?