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ZKsync’s Airbender zkVM Proves Ethereum Blocks in 35 Seconds

Matter Labs, the developer firm behind the layer-2 network ZKsync, unveiled at the Permissionless conference its new cryptographic prover «Airbender» on Tuesday.
A prover is a key component for layer-2s, as it generates zero-knowledge proofs that are then posted to the base layer blockchain (in this case Ethereum) — a crucial process in linking the two chains and ensuring its security.
The ZKsync team claims that Airbender is the fastest of its kind, delivering Ethereum block proofs in 35 seconds with a single GPU, outpacing its competitors benchmarks.
Having fast speeds can save on transaction fees: “we’re entering fraction of a cent territory which is critical for key use cases, including micropayments, high-frequency trading, and decentralized social,” said Alex Gluchowski, the co-founder of Matter Labs, in an interview with CoinDesk. “Faster proofs unlock faster finality, cheaper apps, and crucially, proofs that can be generated anywhere, not just in massive GPU farms.”
The new prover, which is an open-sourced zero-knowledge virtual machine (zkVM), is based on RISC-V, a newer programming framework that Ethereum co-founder Vitalik Buterin has suggested to replace the current EVM, because it will make the blockchain more efficient.
“We started building ZKsync Airbender over a year ago because we saw where Ethereum needed to go, and what ZK apps would eventually demand,” said Gluchowski. “Vitalik’s recent post was a great affirmation of our plans, but this path has been in motion for a while.”
While Airbender is still early in its rollout, Matter Labs has released an app that lets developers test out the new prover. If all goes according to plan and the ZKsync governance process approves it, Airbender will be included in a protocol upgrade later this summer, according to Gluchowski.
“ZKsync Airbender proves Ethereum blocks in 35 seconds using a single GPU. That’s the start of something ground-breaking: home-proving, real-time cross-chain UX, and ZK apps that can verify on the fly. This is the foundation for an Internet of verifiable, interconnected chains,” Gluchowksi said.
Read more: Vitalik Buterin Proposes Replacing Ethereum’s EVM With RISC-V
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Coinbase Outpaces S&P 500 With 43% June Rise as Stablecoin Narrative Grows: CNBC

Shares of Nasdaq-listed cryptocurrency exchange Coinbase (COIN) rose 43% this month, making the firm the top performer in the S&P 500 since it joined the index at the end of last month.
June’s run is already the stock’s best since November and caps three straight monthly gains. Coinbase’s shares reached their highest level since their public debut.
COIN hit a $382 high this week before enduring a slight correction, ending the week at $353 and seeing a slight 0.7% drop in after-hours trading to $351.
The wider S&P 500 index rose roughly 5% in June as geopolitical tensions eased.
Washington’s progress on the GENIUS Act, Congress’s first rulebook for dollar-pegged stablecoins, helped shift investor focus from trading fees to stablecoin revenue.
The bill brightened the outlook for Circle, whose shares hit a record high and saw its market cap near that of Coinbase this week.
Coinbase keeps all yield on USDC balances held on its platform and nearly half of other USDC income, equal to about 99 percent of Circle’s revenue, giving shareholders indirect exposure at no added cost, CNBC reported Friday, citing analysts including Citizens’ head of financial technology research Devin Ryan.
Trading, however, remains subdued. Average daily volume on Coinbase has drifted lower since April.
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Robinhood Launches Micro Bitcoin, Solana and XRP Futures Contracts

Robinhood (HOOD) has introduced micro futures on bitcoin (BTC), solana (SOL) and XRP in the United States., expanding its existing crypto futures offering for its nearly 26 million funded accounts.
Micro contracts need far less collateral than full-size futures, letting traders take directional positions while committing a smaller slice of capital.
The contracts offer traders more flexibility to bet on a cryptocurrency’s future price direction or hedge current positions given their smaller size.
The launch rounds out a futures suite that began with BTC and ETH in January. It also comes weeks after the firm closed its $200 million purchase of Bitstamp and finalized a $179 million deal for Canada’s WonderFi.
Robinhood’s data shows that crypto notional volumes have exploded upward over time, reaching $11.7 billion in May. The figure marks a 36% rise month-over-month, and a 65% growth year-over-year.
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Why is XRP Up Today? Trio of Catalysts Sees Token Outperform Wider Crypto Market

XRP climbed 5.5% to $2.19 in the last 24 hours after a trio of catalysts converged to help the cryptocurrency outperform the wider cryptocurrency market.
One of the catalysts was launch of XRP micro futures on Robinhood. The contracts offer traders more flexibility to bet on the cryptocurrency’s future price direction or hedge current positions given their smaller size.
Regulatory fog also thinned. On Friday, Ripple withdrew its cross-appeal in its long-running U.S. Securities and Exchange Commission (SEC) lawsuit. The SEC sued Ripple back in 2020 over its XRP sales, alleging these violated securities laws. The SEC is expected to drop its own appeal, leaving last year’s ruling, ordering Ripple to pay a $125 million civil penalty to the SEC, intact. The move could lift a lid that had kept some investors on the sidelines.
On-chain data rounded out the bullish setup. The XRP Ledger logged over a 1.1 million active addresses over the past week according to crypto analyst Ali Martinez, who cited Glassnode data.
XRP’s rise saw it outperform the wider crypto market, with the broader CoinDesk 20 (CD20) index rising 1.7% in the last 24 hours.
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