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Article explains Vitalik’s ETH plan to cut proving costs via binary state tree and RISC-V VM.

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why BTC can’t maximize both privacy, decentralization

ETH tackles 80% proving bottleneck as Vitalik proposes binary state tree and long-term RISC-V VM swap.

Summary

  • EIP-7864 replaces the hexary keccak Merkle Patricia Tree with a unified binary state tree using BLAKE3 (or a future Poseidon2), cutting Merkle proof size by about 75% and branches by 3–4x.
  • Page-based storage groups 64–256 adjacent slots so early-slot dapps can save over 10k gas per transaction, while simpler, more uniform depth improves auditing and sets up future state expiry.
  • Long-term, Vitalik proposes replacing the EVM with a RISC-V VM, arguing state tree plus VM drive over 80% of proving cost and that a RISC-V stack would align with existing ZK provers, reduce precompiles, and keep old contracts via staged migration.

Ethereum (ETH) co-founder Vitalik Buterin has proposed two technical changes aimed at addressing proof-efficiency challenges in the blockchain network, according to a proposal outlined in EIP-7864 and related documentation.

The near-term proposal, designated as EIP-7864, would replace Ethereum’s current hexary keccak Merkle Patricia Tree with a binary tree structure utilizing a more efficient hash function. The existing hexary structure was designed for priorities that differ from the proving-heavy architecture Ethereum developers are currently pursuing, according to the proposal.

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The binary tree structure would produce Merkle branches that are four times shorter than the current system, as binary operations require 32 times log(n) compared to hexary’s 512 times log(n) divided by 4, according to technical specifications in the proposal.

The reduction would decrease costs for client-side branch verification and reduce data bandwidth requirements for tools including Helios and private information retrieval systems by the same factor, the proposal states.

Proving efficiency gains would extend beyond branch length improvements. The proposal indicates that shorter branches would deliver a three to four times improvement, separate from hash function optimization. Implementing blake3 instead of keccak could provide an additional three times improvement, while a Poseidon variant could potentially deliver 100 times improvement, though additional security analysis is required before Poseidon deployment, according to the document.

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The binary tree design includes a page-based storage system that groups adjacent storage slots into pages of 64 to 256 slots, approximately 2 to 8 kilobytes. The block header and the first 1 to 4 kilobytes of code and storage would share the same page, allowing contracts that read from initial storage slots to benefit from batch efficiency rather than individual access costs. The proposal estimates this could save more than 10,000 gas per transaction for decentralized applications that load data from initial storage slots, which represents a substantial portion of active deployed contracts.

Binary trees offer simpler implementation and auditing processes, according to the proposal. The structure provides more predictable access depth across contracts of varying sizes, reducing variance in execution costs, and creates space for embedding metadata required for future state expiry development.

The longer-term proposal involves replacing the Ethereum Virtual Machine with a more efficient virtual machine such as RISC-V. The proposal argues that the EVM’s architecture is not optimized for a proving-heavy blockchain and that replacing it would address fundamental inefficiencies rather than managing them through accumulated precompiles and workarounds.

Buterin’s proposal cites four advantages of RISC-V over the EVM. First, raw execution efficiency: RISC-V outperforms the EVM to a degree that would eliminate the need for many precompiles, as underlying computations could run efficiently within the VM itself. Second, prover efficiency: zero-knowledge provers are currently written in RISC-V, creating natural alignment with existing proving infrastructure. Third, client-side proving: a RISC-V VM would enable users to generate zero-knowledge proofs locally about account interactions with specific data, enabling privacy and verification applications not currently supported by the EVM without external tools. Fourth, simplicity: a RISC-V interpreter can be implemented in several hundred lines of code, according to the proposal.

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The deployment roadmap outlined in the proposal includes three stages. In the first stage, a new virtual machine, potentially RISC-V, would handle precompiles only, with current and new precompiles becoming code blobs in the new VM. In the second stage, users could deploy contracts directly in the new VM. In the third stage, the EVM would be retired and reimplemented as a smart contract written in the new VM, preserving backwards compatibility for existing contracts with the primary change being gas cost adjustments, which are expected to be overshadowed by concurrent scaling developments.

Buterin characterizes both changes as addressing the same fundamental challenge from different angles. The state tree and the VM together account for more than 80 percent of the bottleneck in efficient proving, according to the proposal. Addressing either component without the other leaves the larger problem partially unresolved, while addressing both would produce a protocol structurally aligned with the zero-knowledge-proof-heavy architecture Ethereum has been developing, rather than retrofitting that architecture onto infrastructure designed for different requirements.

The proposal acknowledges that the VM replacement does not currently represent consensus within the Ethereum development community, describing it as a change that will become more apparent once state tree modifications are completed. The proposal presents the changes as sequential: binary trees first, followed by VM replacement once proving infrastructure matures around the new state structure. The EVM has accumulated complexity through years of incremental additions, and the proposal states that meeting Ethereum’s functionality requirements necessitates addressing the VM rather than continuously implementing workarounds.

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Crypto World

Glider, Ondo Launch Custom Tokenized Stock Portfolios Without Brokers

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Glider, Ondo Launch Custom Tokenized Stock Portfolios Without Brokers

Glider and Ondo Finance have introduced a platform to let retail investors build and automate custom portfolios of tokenized US stocks, offering direct exposure to equities without a brokerage account.

According to the announcement, the platform allows users to create personalized baskets of onchain stocks that track real-world assets, removing the need for wallets, gas fees or manual transaction management.

Glider co-founder and CEO Brian Huang told Cointelegraph that unlike traditional exchange-traded funds, which bundle assets into fixed products, the platform lets users construct index-like portfolios with custom weightings that are automatically maintained, avoiding reliance on pooled products.

The platform automatically executes and rebalances these portfolios, allowing users to gain exposure to tokenized equities without managing individual trades. The assets track underlying shares and can be traded beyond standard market hours.

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Huang added that the model avoids the liquidity constraints that have limited earlier tokenized ETF offerings. He said:

“This is the first time direct indexing has been offered for onchain stocks… The problem that all ETFs have had on chain is liquidity. There’s no liquidity constraint on Glider because these are directly indexed. You hold the underlying assets and tap into their underlying liquidity.”

Tokenized stocks on Ondo’s platform are designed to mirror the price of their underlying shares and can be transferred and traded onchain, while Glider automates portfolio construction and rebalancing without requiring users to execute transactions manually.

The initial rollout will focus on tokenized US equities, with plans to expand into additional asset classes such as commodities, while also introducing features that allow users to lend positions and generate yield on their holdings.

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A spokesperson for Ondo said the platform is not currently available to US users but said the company holds several SEC registrations, positioning it for a potential future launch in the United States.

Related: Binance adds Ondo’s tokenized stocks in latest RWA push

Tokenized stocks grow alongside evolution of crypto ETPs

Tokenized equities and crypto exchange-traded products (ETPs) have both expanded rapidly over the past year. 

Data from RWA.xyz shows the total value of tokenized real-world assets (RWA) has grown sharply to around $26.5 billion, up from around $7.5 billion the same time last year. Among the RWAs onchain, around $908.5 million are tokenized stocks.

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Tokenized real-world assets. Source: RWA.xyz

At the same time, crypto ETPs have moved beyond spot Bitcoin (BTC) and Ether (ETH) funds, with issuers increasingly exploring more complex and actively managed products.

In February, crypto ETP issuer 21Shares launched a new product offering European investors exposure to a preferred stock issued by Michael Saylor’s Strategy, the largest public holder of Bitcoin. The 21Shares Strategy Yield ETP is available to institutional and retail investors and offers a dividend linked to Strategy’s Bitcoin holdings.

21Shares president Duncan Moir told Cointelegraph the product improves access to Strategy’s STRC preferred stock, which is not widely available or easily cross-listed, while expanding distribution and liquidity through its ETP structure.

He added that the structure also simplifies tax treatment for European investors by handling reporting and withholding at the product level. Moir said:

It’s probably the product we’re seeing the most interest in across multiple regions. From the day we launched it, we’ve had more inbound inquiries to the sales team than for any crypto product, to be honest.

Earlier this month, BlackRock expanded its crypto lineup with a Nasdaq-listed product tied to Ethereum staking. The iShares Staked Ethereum Trust ETF (ETHB) provides spot Ether exposure while generating potential monthly income by staking a portion of its holdings.

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However, BlackRock’s head of digital assets, Robert Mitchnick, said the asset management behemoth plans to remain cautious in expanding its crypto ETF offerings, despite growing interest in more complex structures.

Magazine: Big Questions: Can Bitcoin save you from the dreaded Cantillon Effect?