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Ethereum’s Fast L1 Vision: Vitalik Buterin Unveils Strawmap Plan for Slots and Finality

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Nexo Partners with Bakkt for US Crypto Exchange and Yield Programs

TLDR:

    • Vitalik proposes cutting Ethereum’s slot time from 12 seconds to 2 seconds using a sqrt(2) formula.
    • Erasure coding upgrades to Ethereum’s p2p layer will reduce block propagation time across the network.
    • The Minimmit finality algorithm targets a reduction from 16 minutes today down to just 8 seconds.
    • Ethereum’s quantum-resistant upgrades will roll out in phases, with slot protection arriving first. 

Ethereum’s Fast L1 goal took center stage as Vitalik Buterin published a detailed strawman roadmap outlining how the network plans to evolve its base layer.

The document covers slot time reductions, peer-to-peer network upgrades, and a new finality algorithm. Buterin walks through each goal methodically, explaining how the changes interconnect.

The roadmap presents a phased, component-by-component transformation of Ethereum’s consensus layer toward a faster, simpler, and quantum-resistant design.

Slot Time and Network Architecture at the Core of Fast L1

Ethereum’s Fast L1 goal begins with a structured reduction of slot time across multiple incremental steps. Buterin proposes moving from the current 12 seconds down through 8, 6, 4, 3, and eventually 2 seconds per slot.

Each reduction follows a “sqrt(2) at a time” formula, with steps only taken when safety is confirmed.

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Supporting shorter slots requires major improvements at the network layer. Buterin points to ongoing work by @raulvk on an optimized peer-to-peer design using erasure coding.

The new architecture splits each block into pieces so that any subset of them is enough to reconstruct the full block.

In his post, Buterin explained: “split each block into 8 pieces so that with any 4 of them you can reconstruct the full block.” This design cuts 95th percentile block propagation time and makes shorter slots viable without security tradeoffs.

That said, adding protocols like ePBS and FOCIL to the slot structure tightens timing constraints. These changes shrink the safe latency window from one-third of a slot to one-fifth.

To offset this, researchers are exploring a model where only 256 to 1,024 randomly selected attesters sign per slot, eliminating the aggregation phase and shortening slot duration further.

Finality Overhaul and the Shift to Quantum-Resistant Consensus

Beyond slot time, the strawman roadmap targets a complete rework of how Ethereum achieves finality. Today, finality takes roughly 16 minutes on average, calculated across 12-second slots, 32-slot epochs, and 2.5 epochs. Buterin wants to decouple finality from slot time entirely so each can be optimized on its own path.

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The target is a one-round-finality algorithm called Minimmit, a variant of the established BFT consensus design. A projected trajectory moves from 16 minutes today through several intermediate stages, eventually reaching as low as 8 seconds with aggressive Minimmit parameters.

These changes will also carry a transition to post-quantum cryptography, including hash-based signatures and a STARK-friendly hash function.

Three hash function options are under active research: adjusting Poseidon2’s round count, returning to Poseidon1, or adopting BLAKE3 as a conventional alternative.

Buterin described the overall transformation as a “ship of Theseus” style process, replacing each part of Ethereum’s consensus layer one at a time.

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Notably, the phased approach means slot-level quantum resistance could arrive well ahead of finality-level protection, providing an early security layer if quantum computing advances faster than anticipated.

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Crypto World

Visa Direct Integration Lets OwlTing Users Fund USDC Straight From a Debit Card

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Visa Direct Integration Lets OwlTing Users Fund USDC Straight From a Debit Card

The integration marks the latest expansion of Visa’s stablecoin infrastructure, which now spans settlement, card spending, and direct on-ramp capabilities.

Nasdaq-listed fintech firm OwlTing Group (OWLS) has expanded its collaboration with Visa to integrate Visa Direct into its OwlPay payment infrastructure, creating a card-to-wallet on-ramp that lets eligible U.S. debit cardholders fund USDC transactions without needing a standalone exchange account.

The capability is now live inside OwlPay Harbor, the company’s enterprise-grade on/off-ramp layer, and is also accessible to consumers through OwlPay Wallet Pro, a self-custody digital wallet. A subsequent phase will bring the on-ramp to OwlPay Cash, the firm’s consumer remittance app.

Once funded, users can spend USDC at U.S. retailers via gift cards, transfer assets to third-party platforms, or send funds globally through settlement channels including pushes to eligible Visa debit cards, local bank accounts via the Circle Payments Network, and cash pickup through MoneyGram.

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OwlTing CEO Darren Wang framed the integration as an effort to close the gap between existing card infrastructure and digital dollar rails. The company holds money transmission licenses or equivalents in 41 U.S. states as of March 2026, according to the announcement.

Visa’s Expanding Stablecoin Footprint

The partnership adds another layer to Visa’s rapidly growing stablecoin strategy.

The payments giant launched USDC settlement in the U.S. in December 2025 with Cross River Bank and Lead Bank on Solana, and in March expanded its collaboration with Stripe-owned Bridge to bring stablecoin-linked Visa cards to more than 100 countries. Visa’s stablecoin-linked card spending alone hit a $3.5 billion annualized run rate in late 2025, growing roughly 460% year over year, according to an Artemis report.

This article was written with the assistance of AI workflows. All our stories are curated, edited and fact-checked by a human.

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Coinbase CEO Backs US Treasury Secretary‘s Push to pass CLARITY Act

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Coinbase, Cryptocurrencies, Law, Politics, Congress

Brian Armstrong, the Coinbase CEO who withdrew the crypto exchange’s support for the Digital Asset Market Clarity Act in January, said “it’s time” for the legislation to pass after months of delays.

In a Thursday X post, Armstrong said that Coinbase agreed with comments from US Treasury Secretary Scott Bessent in a recent Wall Street Journal op-ed, in which he urged Congress to act on the crypto bill soon. According to the CEO, the current version of the legislation, after months of negotiations between lawmakers and representatives from the crypto and banking industries, was a “strong bill.”

“It’s time to pass the Clarity Act,” said Armstrong.

Coinbase, Cryptocurrencies, Law, Politics, Congress
Source: Brian Armstrong

Armstrong’s endorsement of the bill came about three months after the CEO said that the company could not support the legislation “as written,” leading to lawmakers in the Senate Banking Committee postponing a markup on CLARITY necessary for its approval.

At the time, Armstrong said that he expected the bill to pass “in a few weeks,” but concerns over ethics, tokenized equities, stablecoin yield and other crypto-related issues have stalled progress since January.

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Related: Coinbase CEO denies White House clash, says negotiations are ongoing

The expected markup for the bill in the banking committee, not scheduled as of Friday, will follow approval from the Senate Agriculture Committee in January. Both committees need to address different aspects of securities and commodities regulations before a potential vote for the CLARITY Act in the full chamber.

Coinbase legal chief Paul Grewal said last week that lawmakers were “very close to a deal” on the bill.

Is the crypto industry’s influence growing in Washington?

Since before the inauguration of US President Donald Trump, many experts have questioned the influence of the crypto industry on elections, lawmakers’ decisions and White House policies.

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Executives at Coinbase and Ripple Labs have been parties to the discussions with administration officials on the CLARITY Act, and Armstrong reportedly met with the president before Trump posted a social media message calling for immediate action on crypto market structure.

The relationships may have benefited Coinbase and other companies seeking crypto-friendly laws and regulations under Trump. Last week, the Office of the Comptroller of the Currency approved Coinbase’s application for a national bank trust charter, following December approvals for Paxos, Ripple Labs, BitGo, Circle and Fidelity Digital Assets.

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