Ethereum Engraves Censorship Resistance into Its Protocol — FOCIL Tests the Cypherpunk Community's True Commitment
Ethereum's decision to make FOCIL (EIP-7805) the headline feature of the Hegota upgrade — embedding censorship resistance at the protocol layer — is a structural backlash against the "state-compliant blockchain" that emerged after the Merge, and a bet that redefines the very reason crypto exists
── Understand in 3 Points ─────────
- • At the All Core Devs meeting on February 19, 2026, FOCIL (EIP-7805) was officially scheduled as the headliner (flagship feature) of the Hegota upgrade
- • Vitalik Buterin declared he is building "a cypherpunk-principled, non-ugly Ethereum." He outlined a vision of bolting onto the current system and expanding over time
- • A committee of validators creates and distributes inclusion lists (ILs), and block proposers are obligated to include all transactions in the IL. If they don't, the block is rejected by fork-choice rules
── NOW PATTERN ─────────
Backlash × Path Dependence
A protocol-level counterattack (backlash) championing cypherpunk principles has begun against the structural censorship vulnerability (path dependence) created by the Merge
── Probability & Response ──────
• Optimistic Scenario: Cypherpunk Victory 25% — Positive reappraisal of the Ethereum ecosystem. Revitalization of DeFi and privacy projects. Medium-to-long-term tailwind for ETH price
• Base Scenario: Delayed and Compromised Implementation 45% — Neutral in the short term. Ethereum's "principles-first" stance is appreciated, but implementation delays could erode confidence in the roadmap
• Pessimistic Scenario: Regulatory Counterattack 30% — Regulatory risk premium rises for the Ethereum ecosystem. Validator-centric infrastructure investment slows. Potential capital flight to alternative L1s (especially privacy-focused chains)
Hegota testnet deployment schedule to be finalized at the Ethereum All Core Devs meeting in Q3 2026 → Read more ↓
Why It Matters: Since the 2022 Merge, Ethereum has faced a "censorship problem" where the majority of block production complied with OFAC sanctions. FOCIL is the first serious attempt to address this issue at the protocol level, forcing an answer to the fundamental question of how "neutral" a blockchain can remain against state regulation. If it succeeds, it reaffirms the raison d'être of crypto as a whole; if it fails, it accelerates the transition toward regulation-adaptive blockchains.
What Happened
- FOCIL Officially Adopted — At the All Core Devs meeting on February 19, 2026, FOCIL (EIP-7805) was officially scheduled as the headliner (flagship feature) of the Hegota upgrade
- Vitalik's Declaration — Vitalik Buterin declared he is building "a cypherpunk-principled, non-ugly Ethereum." He outlined a vision of bolting onto the current system and expanding over time
- How FOCIL Works — A committee of validators creates and distributes inclusion lists (ILs), and block proposers are obligated to include all transactions in the IL. If they don't, the block is rejected by fork-choice rules
- EIP-8141 Status — EIP-8141, which enables account abstraction, remains at "Considered for Inclusion (CFI)" status and did not become a Hegota headliner. FOCIL is confirmed as the sole flagship feature
- Dissenting Voice — Developer Ameen Soleimani warned that "solving the problem of filtering sanctioned addresses by forcing validators to include transactions is a major issue"
The Big Picture
Historical Context
The origin of this story is the Ethereum Merge in September 2022. The transition from Proof of Work to Proof of Stake achieved the "visible result" of energy efficiency, but fundamentally altered the structure of block production. Under the Proposer-Builder Separation (PBS) architecture, a small number of centralized block builders came to effectively control block contents.
The consequences were dramatic. In August 2022, when the U.S. Treasury's OFAC (Office of Foreign Assets Control) designated Tornado Cash as a sanctioned entity, the leading MEV relay operator Flashbots (with over 80% market share at the time) began OFAC-compliant filtering. By November 2022, approximately 80% of Ethereum blocks were OFAC-compliant — intentionally excluding transactions from sanctioned addresses. A blockchain that championed "censorship resistance" as a core value had effectively become censorship infrastructure.
The situation seesawed. By mid-2023, the OFAC compliance rate dropped to 27%, but by late 2023 it climbed back to 72%. This instability itself reveals the essence of the problem — Ethereum's current censorship resistance depends on the "goodwill" of relay operators and builders, not on protocol guarantees.
FOCIL emerged as the answer to this structural vulnerability. But the question behind FOCIL transcends mere technical optimization. It is the latest version of the fundamental question "Is code law?" — a thread running from the Crypto Wars of the 1990s, when cypherpunks fought the U.S. government over encryption export controls.
Stakeholder Map
| Actor | Public Stance | Real Motivation | ✅ What They Gain | ❌ What They Lose |
|---|---|---|---|---|
| Vitalik Buterin / Ethereum Foundation | Technical improvement based on cypherpunk principles | Rebuilding Ethereum's narrative. Shedding the image of a "regulation-vulnerable chain" | Developer community cohesion, redefining L1's raison d'être | Risk of direct confrontation with U.S. regulators |
| MEV Relay Operators (Flashbots, etc.) | Efficient block production and fair MEV distribution | Preserving the current business model. FOCIL weakens their intermediary function | First-mover advantage in FOCIL-compatible technology | Fundamental disruption of business model by FOCIL |
| U.S. OFAC / Regulators | Ensuring the effectiveness of sanctions | Maintaining influence over crypto infrastructure | Deterrence against sanctions evasion technology | Sanctions rendered toothless by protocol-level censorship resistance |
| Ethereum Validators | Stable rewards and low-risk operations | Seeking a balance between regulatory risk and censorship resistance | Participation in the canonical chain through FOCIL compliance | Risk of block rejection for FOCIL non-compliance, pressure from regulators |
| DeFi / Privacy Projects | Ensuring users' transaction freedom | Sustainable operations on censorship-free infrastructure | Protocol-level censorship resistance | Direct legal risk from regulators |
The Structure in Data
- 80% — OFAC compliance rate of Ethereum blocks as of November 2022. The censorship peak immediately after the Merge
- 27% — OFAC compliance rate as of May 2023. A temporary improvement that did not last
- 72% — Censorship rate of MEV-Boost routed data blocks as of December 2023. Showing renewed deterioration
- Late 2026 — Target timeline for the Hegota upgrade. FOCIL is the sole headliner feature
Reading Between the Lines — What the Coverage Isn't Saying
There is something Vitalik and the Ethereum Foundation are carefully not saying. FOCIL is not merely a technical upgrade — it is effectively a "declaration of independence from U.S. regulatory authority." Embedding censorship resistance into fork-choice rules means that if a validator tries to filter transactions in compliance with OFAC sanctions, they will be penalized by the protocol. The "cypherpunk" framing gives Vitalik plausible deniability — he's simply building privacy-respecting technology — but the practical effect is that Ethereum has chosen its original values over regulatory convenience. The real question everyone is avoiding is whether U.S. regulators will view this as a direct challenge to sanctions enforcement and take legal action against Ethereum validators, node operators, or the Ethereum Foundation itself.
NOW PATTERN
Backlash × Path Dependence
A protocol-level counterattack (backlash) championing cypherpunk principles has begun against the structural censorship vulnerability (path dependence) created by the Merge
Path Dependence: The Rails the Merge Laid — Censorship Was Not a Bug, but a Design Consequence
The 2022 Merge was celebrated as a "successful technical innovation." But its design choices made today's censorship problem structurally inevitable.
The transition to Proof of Stake itself did not create censorship. The root of the problem lies in the Proposer-Builder Separation (PBS) architecture that became entrenched alongside the Merge. PBS was a rational design — instead of validators (proposers) directly constructing block contents, they delegate this to specialized builders. This was intended to democratize MEV (Maximal Extractable Value) and free validators from technical complexity.
However, this division of labor concentrated the power to determine block contents in the hands of a few builders. As of 2022, Flashbots alone accounted for over 80% of relay traffic. When block production becomes centralized, it is inevitable that regulatory pressure concentrates there. The moment OFAC sanctioned Tornado Cash, Flashbots began filtering to avoid legal risk, and this effectively became the default.
Here we see the classic structure of path dependence. Initial design choice (PBS) → Centralization (few builders) → Formation of regulatory pressure points → Normalization of censorship. Each stage follows logically from the previous one, and the cost of changing course increases with each successive stage. The moment Ethereum chose "efficiency," it was implicitly choosing to leave "censorship resistance" to the goodwill of the market.
FOCIL is an attempt to "reverse" this path dependence. By embedding inclusion lists into the fork-choice rules — the most fundamental layer of consensus — it strips builders of their monopoly over transaction selection while preserving the benefits of PBS. Technically elegant, but overturning a path that has solidified over four years requires more than just code changes — it requires political will.
Backlash: The Cypherpunk Counterattack — From "the Censored" to "Making Censorship Impossible"
Vitalik's "cypherpunk declaration" is not sentimental nostalgia. It is a political manifesto for the Ethereum community to structurally "swing back" after the post-Merge censorship crisis.
The backlash pattern follows a classic cycle: ① An existing equilibrium is disrupted by an external shock → ② A new equilibrium (often undesirable) takes hold → ③ Discontent accumulates and reaches a tipping point → ④ A structural counterreaction occurs. Ethereum's censorship problem has entered phase ④ — the structural counterreaction.
The 2022 Tornado Cash sanctions (external shock) → Normalization of OFAC-compliant blocks (undesirable equilibrium) → Accumulation of crisis awareness in the developer community → FOCIL as structural counterreaction. This cycle itself has repeated many times throughout history.
What matters is that this backlash is being achieved not through "individual goodwill" but through "protocol enforcement". Previous countermeasures — such as increasing OFAC-noncompliant relays or calling on validators to voluntarily include transactions — all depended on "human behavior." FOCIL is different. By writing censorship resistance into the consensus rules themselves, it creates a structure where validators who attempt censorship are penalized by the protocol.
It is no accident that Vitalik invoked the word "cypherpunk." In the Crypto Wars of the 1990s, cypherpunks neutralized government regulation by redefining encryption technology from "weapons" to "speech." FOCIL is the 21st-century version of that same strategy — redefining censorship resistance from a "feature" to a "law of protocol physics". Once embedded in consensus rules, changing it would require a hard fork — meaning the consent of the entire community.
However, backlash always carries risk. If the pendulum swings too far in the opposite direction, it could provoke a fierce backlash from regulators. If the U.S. government takes direct legal action against Ethereum validators, FOCIL's censorship resistance might function technically, but it could trigger a network security problem through declining validator numbers.
At the Intersection of Forces
The essence of FOCIL lies at the intersection of path dependence and backlash. The censorship structure created by the path dependence of PBS became entrenched precisely because it was technically "efficient." FOCIL is a backlash that reverses that path, but it faces the high-wire act of restoring censorship resistance without destroying the benefits of PBS (efficient MEV distribution). In other words, it is not "a revolution that totally repudiates the past path" but "a reform that stretches a safety net over the existing path." Whether this delicate balance succeeds will determine Ethereum's next five years. If it succeeds, it will go down in history as a model case of "backlash that corrected path dependence"; if it fails, it could yield the ironic result of "backlash that created new path dependence."
Pattern History
2022: Tornado Cash Sanctions and the Ethereum Censorship Crisis
In August 2022, U.S. OFAC designated the mixing protocol Tornado Cash as a sanctioned entity. Led by Flashbots, MEV relay operators began OFAC-compliant filtering, and by November of that year, approximately 80% of Ethereum blocks were OFAC-compliant. It was the moment a blockchain that held censorship resistance as a core value effectively became censorship infrastructure — the direct cause that gave rise to the need for structural solutions like FOCIL.
Structural parallel to the current situation: FOCIL is the direct technical answer to this crisis. The approximately four years required from the problem's emergence (Tornado Cash sanctions) to the solution's implementation (FOCIL) is itself a path dependence correction cycle
2017: Bitcoin SegWit / Block Size War
From 2015 to 2017, the Bitcoin community split over its scaling approach. Against the block size increase (SegWit2x) championed by miners and major corporations, core developers and node operators backed SegWit plus Layer 2. Ultimately, SegWit2x was withdrawn, and the community's decentralized decision-making defeated centralized interests.
Structural parallel to the current situation: The structure of countering a small number of centralized actors (miners then, builders/relays now) through protocol-level changes is strikingly similar. A litmus test of whether community "principles" can prevail over "efficiency"
1993: The 1990s Crypto Wars — Encryption vs. the U.S. Government
The U.S. government classified encryption technology as "weapons" and attempted to regulate its export. Cypherpunks countered by redefining cryptographic technology as "speech," including publishing PGP source code as a printed book. Ultimately, a 1999 court ruling recognized cryptographic code as protected under freedom of speech, and the regulations were effectively withdrawn.
Structural parallel to the current situation: The archetype of the strategy of using technical means to structurally circumvent government regulation. FOCIL's approach of "writing censorship resistance into the protocol" shares the same logic as the strategy of publishing PGP as a book — transforming censorship resistance from "an implementation choice" into "a law of protocol physics"
What History's Patterns Show
The battle between censorship and anti-censorship is a recurring pattern in the history of technology. What they have in common is that countermeasures initially dependent on "human goodwill" eventually evolve into "structural, institutional enforcement." The publication of PGP as a book, the adoption of SegWit, and FOCIL are all different phases of this evolution. However, success is not guaranteed — structural changes always carry unforeseen side effects, and backlash carries the risk of creating new problems.
What's Next
Optimistic Scenario: Cypherpunk Victory (Probability: 25%)
FOCIL deploys as planned in late 2026 with the Hegota upgrade, and OFAC compliance rates drop significantly. EIP-8141 (account abstraction) is also implemented in a subsequent upgrade, realizing an Ethereum that balances privacy and usability. Regulators adapt after the fact, and protocol-level neutrality becomes the new industry standard.
Investment/Action Implications: Positive reappraisal of the Ethereum ecosystem. Revitalization of DeFi and privacy projects. Medium-to-long-term tailwind for ETH price
Base Scenario: Delayed and Compromised Implementation (Probability: 45%)
FOCIL implementation is delayed 6–12 months due to technical complexity and disagreements among developers, deploying in early-to-mid 2027. Some features are modified or simplified. Regulators express concerns about FOCIL but take no immediate legal action, and the industry as a whole enters a "wait and see" posture. Censorship resistance improves, but the builder market structure does not change significantly.
Investment/Action Implications: Neutral in the short term. Ethereum's "principles-first" stance is appreciated, but implementation delays could erode confidence in the roadmap
Pessimistic Scenario: Regulatory Counterattack (Probability: 30%)
U.S. regulators (OFAC or SEC) view FOCIL as a feature that facilitates sanctions evasion and threaten legal action against the Ethereum Foundation, major validators, or infrastructure operators. Major validators refuse to adopt FOCIL to avoid risk, raising the specter of a de facto network split. FOCIL is either significantly watered down or its implementation is postponed indefinitely.
Investment/Action Implications: Regulatory risk premium rises for the Ethereum ecosystem. Validator-centric infrastructure investment slows. Potential capital flight to alternative L1s (especially privacy-focused chains)
Key Triggers to Watch
- FOCIL final specification at All Core Devs meeting: May–June 2026
- Hegota testnet deployment: Q3 2026 (July–September)
- EIP-8141 final CFI determination: Q2–Q3 2026
- U.S. OFAC / Treasury statement on Ethereum: Late 2026–2027
Tracking Points
Next Trigger: Hegota testnet deployment schedule to be finalized at the All Core Devs meeting in Q3 2026. This is where FOCIL's final specification and deployment timeline become concrete
Continuation of this pattern: Ethereum Censorship Resistance Series: FOCIL implementation progress → Regulatory response → Changes in validator behavior → Ripple effects across DeFi and privacy ecosystem
Prediction ID: NP-2026-0001
🧭 Causal Map — Why This Is Moving Now
Causal context used
entities=xi-jinping/ethereum/eu
Engram references
Why this view
- MISS時の平均確信度が高い場合、この人物/組織の行動予測で過信傾向あり
- 推奨**: この人物に関する新規予測は確率を10-15%低めに補正を検討
- この人物に関する新規予測は確率を10-15%低めに補正を検討
What to watch next
- eu has elevated Brier. Avoid overstating confidence
