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Bitcoin Mining Pool DMND Mines First Known Stratum V2 Block; GoMining Constructs Its Own Template

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Bitcoin mining pool DMND has mined the first known Bitcoin block produced using the Stratum V2 protocol, a technical milestone that shifts control over block construction from pools to individual miners. The block — number 955,318 — was mined through DMND’s pool for GoMining, which became the first miner to use Stratum V2’s Job Declaration feature to select its own transactions and build its own block template, according to a note shared with Bitcoin Magazine. 

Under the dominant model in Bitcoin mining today, miners contribute their computing power to a pool, and the pool decides which transactions go into each block. The miner has no say in that selection. 

Stratum V2, an open-source protocol developed with broad industry support, changes this arrangement. It allows miners to retain their participation in pooled mining — which smooths out revenue variance — while taking back the right to construct the block template themselves. Job Declaration is the specific mechanism that makes this possible: a miner submits its own proposed block template to the pool, the pool validates it, and the miner’s version goes forward.

GoMining used that mechanism to include transactions from GoBTC Pay, an open-source, non-custodial Bitcoin instant payments protocol the company announced at Consensus Miami in May 2026. The result is the first known case of a miner using Stratum V2 in a live production environment to power its own product through the block it helped create.

“A miner just mined the first Stratum V2 block to power their own product end to end,” said Alejandro De La Torre, CEO and co-founder of DMND. “GoMining declared the template and included their GoBTC Pay payments with no pool in the way. We built DMND for exactly this.”

GoMining CEO Mark Zalan framed the significance in structural terms. “For years, mining pools have determined which transactions are included in Bitcoin blocks,” he said. “By being the first to declare our own block template and include GoBTC Pay transactions, we’re demonstrating one of the practical capabilities that Stratum V2 makes possible.”

Bitcoin miners gain transaction control

The implications extend beyond this single block. Mining pool transaction selection has been a long-standing concern in Bitcoin, both for censorship resistance and for the distribution of power over the network’s transaction layer. 

If Stratum V2 adoption grows, miners — not pools — become the decision-makers on what enters the blockchain. DMND’s production deployment shows the protocol can function in a live environment, which removes one barrier to that broader adoption.

GoMining, which serves five million users and ranks among the top-ten Bitcoin miners by hashrate, operates data centers in the U.S. and internationally. 

The company offers tokenized hashrate products alongside its payments and earning tools. DMND describes itself as a pool built for the Stratum V2 era, with Job Declaration running in production.

Sharplink Buys ETH for First Time in 8 Months

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Ether treasury company Sharplink has bought Ether for the first time in eight months as the token sank to its lowest price this year on Thursday.

On-chain data from Arkham shows a wallet associated with Sharplink received 5,000 Ether (ETH), worth $7.85 million, from crypto prime brokerage FalconX on Thursday. The last time it received Ether from FalconX was on Oct. 26, when it bought $78.3 million worth of ETH. 

The purchase comes as Ether hit $1,537 on Thursday, its lowest price in 2026. The latest purchase could suggest a revival of the company’s active Ether accumulation strategy.

“I’m seeing genuine corporate accumulation conviction holding strong amid subdued price action,” Andri Fauzan Adziima, the research lead at Bitrue Research Institute, told Cointelegraph. 

Sharplink CEO Joseph Chalom told Cointelegraph in May that he saw three catalysts that could spur growth in the price of Ether.

The first was the passage of the CLARITY Act in the US, while the second was a return to market risk appetite, which will depend on an easing in geopolitical tension and cooling of the artificial intelligence investment thesis. Chalom’s third catalyst was the continued growth of real-world asset tokenization. 

The Senate is yet to vote on its version of the CLARITY Act, and the House Financial Services Committee said it would hold a hearing on the bill on July 17. The US and Iran are working toward a final peace agreement to end months of conflict and tokenized real-world assets have now reached a distributed asset value of $31.55 billion, close to its highest level this year.

Sharplink now holds 876,285 ETH

Sharplink was founded in 2019 as an affiliate marketing service provider to the sports betting and gambling industries, but pivoted to become an Ethereum treasury company in June 2025, with Consensys co-founder and CEO Joe Lubin named as chairman.

It became the largest publicly traded corporate holder of ETH, but lost the title to Bitmine in August, just two months after Bitmine launched its own Ether buying strategy. 

Related: Bitmine, Sharplink and Joe Lubin back Ethereum R&D nonprofit

The company now holds 876,285 ETH and ETH equivalents, which it has accumulated over time through active ETH purchases and staking rewards. Its competitor, Bitmine, holds 5.67 million ETH after acquiring another 52,203 ETH last week. 

Source: Sharplink

“We continue to maintain a steady pace of accumulation throughout 2026. We believe we are in the early stages of crypto spring,” Bitmine chairman Tom Lee said. 

Sharplink added to the Russell indexes

The purchase also comes just days before Sharplink is expected to join the Russell 2000 and Russell 3000 indexes on Monday. 

Inclusion in the indexes is widely viewed as positive because many active and passive funds, including exchange-traded funds, typically buy stocks from them.

Chalom in May said that joining the Russell indexes would broaden the company’s shareholder base and strengthen its access to capital markets.

Magazine: Guide to the top and emerging global crypto hubs: Mid-2026

Bitcoin Tests Critical Support As Key Level Hangs In The Balance

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Bitcoin has shed more than 50% of its value since hitting an all-time high near $126,000, and the market is now locked in a tense standoff at a support level that technical analysts say could determine the digital asset’s next major move.

The cryptocurrency has been testing the $58,000–$60,000 range for the third time in recent months, a zone that chart watchers consider critical. Below that threshold, the next meaningful support sits in the low $40,000s, a drop that would push Bitcoin into drawdown territory comparable to its most brutal prior cycles.

The sell-off has been swift and precise. Bitcoin’s failed attempt to break higher ran straight into its 200-day moving average, a level that served as near-perfect resistance and triggered a roughly 30% decline from that ceiling. The pattern has left the asset in a clear downtrend, though some technical indicators are beginning to flash warning signs for bears.

“We’re looking for stabilization,” said Katie Stockton, founder and managing partner of Fairlead Strategies on CNBC’s Squawk Box. “Ideally it does happen in this range because it is a key Fibonacci retracement level, below which a full retracement often happens.”

Stockton noted that Bitcoin has been in a long-term oversold condition for a duration that, based on historical patterns, tends to precede a shift in momentum. That does not mean a bottom is confirmed, she said she would want to see two to three weeks of price stabilization before feeling conviction that support is holding.

The $60,000 level carries weight beyond Fibonacci math. It represents a psychological marker and has been a contested battleground across multiple test cycles. A clean break below it would erase a layer of confidence among retail and institutional holders alike.

80% drawdowns in bitcoin’s price

Some Bitcoin bulls have argued this cycle is structurally different from previous crashes. The presence of spot Bitcoin ETFs, growing institutional adoption, and broader mainstream acceptance, they say, may cap the depth of any drawdown compared to the 80%-plus collapses seen in earlier bear markets. Stockton is not convinced the argument holds.

“I think we can still see those 75 to 80% drawdowns,” she said, “but as a technician, I almost see the volatility as opportunity.”

That framing cuts to a tension at the heart of Bitcoin trading: the gap between what investors say they want and what they do when prices fall. At $125,000, many buyers felt priced out. At $60,000, the same buyers hesitate to pull the trigger. 

Market psychology, Stockton noted, runs counter to rational accumulation.

On the question of four-year halving cycles — a framework many Bitcoin traders treat as gospel — Stockton said the sample size is too small to place confidence in the pattern. She described herself as a Bitcoin bull from a “very, very long-term perspective,” while maintaining that short-term risk management through trend-following tools remains the more reliable approach.

For now, Bitcoin sits at a crossroads. The coming weeks will test whether institutional infrastructure and long-term demand are enough to hold a line that, if broken, leaves a long way down to the next floor.

Senators Urge CFTC Probe Polymarket Over Faked Ads Report

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A bipartisan pair of US senators has called on the Commodity Futures Trading Commission to investigate the prediction market platform Polymarket after it reportedly paid social media influencers to make videos of fake bets.

Republican Senator John Curtis and Democratic Senator Adam Schiff sent a letter to CFTC Chair Mike Selig on Thursday, saying they were concerned Polymarket “used deceptive marketing tactics to promote gambling-style products to US audiences.”

“If accurate, these allegations are deeply troubling and demand immediate scrutiny from the Commodity Futures Trading Commission,” they wrote.

The letter comes after The Wall Street Journal reported on June 20 that Polymarket paid influencers to film fake trades on websites resembling its platform and that many creators didn’t disclose that Polymarket paid them.

The Journal said it reviewed over 1,100 videos and found that 70% featured fake bets amounting to nearly $2 million.

In response to the report, a Polymarket spokesperson told Cointelegraph earlier this week that it was “conducting a comprehensive audit of active promotional content to ensure it complies with our standards, as well as applicable regulatory and legal disclosure requirements.”

The letter also came ahead of reports in the Journal and CNBC on Friday that the CFTC was investigating Polymarket.

CNBC reported, citing a person familiar with the inquiry, that the CFTC has an ongoing and extensive investigation into Polymarket, but the timeline for when the investigation began was not shared.

Polymarket declined to comment on the letter or on the reported CFTC investigation.

Prediction markets have recently exploded in popularity and have seen billions of dollars in volume each month, with Senators Curtis and Schiff expressing their concerns about the CFTC’s ability to regulate the platforms.

Source: John Curtis

“The CFTC has repeatedly asserted regulatory authority over prediction markets and event contracts,” the senators wrote. “Yet with content creators routinely portraying prediction markets as ‘free money,’ there is little basis for treating them differently from gambling.”

“These contracts are not in the public interest and should not be treated as derivative products with hedging value,” they added. “We remain concerned that the Commission is neither enforcing the law appropriately, nor is equipped to serve as a federal gambling regulator.”

Related: US senators push to end CFTC ‘assault’ on state oversight of prediction markets

The CFTC has claimed it has authority over prediction markets as the platforms are registered with the agency and operate under federal commodities law.

The regulator has sued nine US states that have filed legal action against prediction markets to accuse the platforms of offering unlicensed sports betting via event contracts.

Senators Curtis and Schiff asked Selig to give written responses to a list of questions by July 10, which asked if the CFTC was investigating Polymarket, if the reported advertising was legal and if it has the resources to police prediction markets, among others.

Magazine: Should users be allowed to bet on war and death in prediction markets?

Bitcoin’s first-half solace is it fell less than Strategy (MSTR): Crypto Daily

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As the first half of 2026 draws to a close, major cryptocurrencies are deeply in the red, lagging far behind traditional assets. Bitcoin bulls can at least take one small consolation: they’ve outperformed shares in bitcoin-holder Strategy (MSTR).

These diverging trends point to investor preference for assets linked to economic activity and geopolitical trends rather than narrative-led plays.

While bitcoin, the crypto market leader by market capitalization, is down 32% as June nears an end, ether has slumped 47% and Strategy 43%. The total crypto market cap has declined by roughly 30% to nearly $2 trillion, a level not seen since before President Donald Trump’s election victory in November 2024.

Most of the biggest coins are down, except a select few like HYPE, which has gained over 140%. HYPE’s strength is the result of increased volatility and the stellar performance of TradFi-linked assets available on its parent decentralized exchange, Hyperliquid.

Bitcoin Will ‘Dwindle Away With A Whimper’

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Legendary investor Jeremy Grantham — co-founder of asset management firm GMO and one of Wall Street’s most prominent bubble-spotters — came at Bitcoin again on Friday, calling the asset a “useless, speculative mechanism” destined for slow decline into irrelevance.

Speaking on CNBC’s Squawk Box, Grantham predicted that Bitcoin will “dwindle away, I suspect — not with a bang, but a whimper.” He said he has never owned Bitcoin and believes it will fall to zero, not through a sudden crash but through a gradual erosion of interest over years and decades.

“All Bitcoin does is allow fraudsters to move money around,” he said.

Grantham pointed to Bitcoin’s instability as evidence against its status as a store of value. The coin “halved for no particular reason in a strong economy,” he noted — a critique with fresh teeth given where Bitcoin stands today. 

Gold, he added, has delivered solid gains over the same period.

Perhaps Grantham is right, the selloff has been severe. BTC hit an all-time high near $126,000 in October 2025. Since then, the digital asset has shed more than 50% of its value. As of Friday, BTC traded in the $60,000 range, testing what analysts consider a critical support zone that, if broken, could open a path to the $40,000s.

Bitcoin fell toward $62,000 in mid-June as hawkish signals from the Federal Reserve spooked risk markets. Rising U.S.–Iran geopolitical tensions sent oil prices higher and reignited inflation fears, pushing Fed officials to abandon any talk of rate cuts — with some floating the possibility of rate hikes. U.S. spot BTC ETFs posted four consecutive days of net outflows totaling around $113.8 million.

Bitcoin’s attempt to reclaim higher ground ran straight into its 200-day moving average, which served as hard resistance and triggered a roughly 30% decline from that ceiling. The current drawdown is among the 5th worst in Bitcoin’s history — territory that tests the resolve of long-term holders. Some institutional buyers, however, are treating the dip as an entry point, with Coinbase reporting that major institutions have stepped in to buy the crash.

Another billionaire bets big on bitcoin

On the flip side, Mexican billionaire Ricardo Salinas Pliego has placed 70% of his investment portfolio into BTC — up from just 10% in 2020 — and has even convinced his wife to mortgage their home to buy more. 

The founder of Grupo Salinas traces his skepticism of fiat currency to family dinner table conversations about Nixon ending the gold standard, and views Bitcoin as superior to both cash and gold because it is unseizable and borderless. 

His conviction has survived a $150 million loan scam, regulatory pushback on his plans to make Banco Azteca Mexico’s first Bitcoin-accepting bank, and multiple market cycles. 

He recently pointed to a decade of London property prices as proof of his thesis — a home that cost 4,000 BTC in 2016 now costs fewer than 30 — and urges ordinary investors to convert their home equity into BTC exposure, calling it “an asymmetrical bet to the upside.” 

Polymarket Confirms $3 Million Loss From Third-Party Front-End Supply-Chain Breach

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Polymarket confirmed hackers drained approximately $3 million through a compromised third-party vendor that injected malicious code into the platform’s website, and pledged full refunds to fewer than 15 affected accounts.

Polymarket confirmed Friday that hackers drained approximately $3 million from users through a compromised third-party vendor that injected malicious code into the platform’s website, according to PeckShield. The prediction-market platform said it had contained the breach and would refund affected users in full.

“This morning we discovered a 3rd party vendor had been compromised, injecting a malicious script into our frontend for some users,” Polymarket’s official X account posted Friday. “We’ve contained it & removed the affected dependency. We’re contacting impacted users and refunding them in full.”

Blockchain security firm PeckShield estimated that roughly $3 million in pUSD, Polymarket’s USDC-backed trading stablecoin on Polygon, was stolen. A blockchain analyst cited by SecurityWeek confirmed losses from at least 11 victim accounts. The attacker bridged the stolen funds from Polygon to Ethereum and swapped them into approximately 1,893 ETH. On-chain analytics firm Bubblemaps concluded that fewer than 15 accounts were affected overall.

Supply-Chain Vector

The attack did not touch Polymarket’s core smart contracts or backend servers. Instead, the attacker compromised an unnamed third-party software dependency that Polymarket’s web frontend loads. When users connected their wallets on the affected site, a hidden script triggered transaction-approval prompts, routing funds to attacker-controlled wallets. Polymarket has not publicly identified which vendor was breached.

The attack vector follows a now-documented pattern in crypto. In December 2023, an attacker hijacked a former Ledger employee’s npm publishing credentials and pushed malicious versions of `@ledgerhq/connect-kit`, a JavaScript library loaded by more than 100 DeFi frontends. That supply-chain compromise drained user funds before a patch went live. Polymarket’s breach follows the same logic: the protocol layer stayed intact while the delivery mechanism for the web interface was turned against users.

Second Breach in Two Months

Polymarket, valued at approximately $9 billion, saw $25.7 billion in March 2026 trading volume alone. Monthly global prediction-market volume has scaled to approximately $21 billion, per TRM Labs research.

Friday’s breach is the platform’s second reported security incident in recent months. Polymarket has pledged to absorb the full cost of refunds so that no affected user suffers a net loss.

Regulatory Backdrop

The breach arrived alongside separate reports from Bloomberg and CNBC that the CFTC has opened a broad investigation into Polymarket, following a Wall Street Journal investigation revealing a misleading influencer marketing campaign. The Defiant reported that bipartisan senators had asked the CFTC chair whether the agency was probing that campaign. The WSJ investigation found $1.9 million in apparent fabricated wins across creator videos.

Polymarket received CFTC clearance to re-enter the U.S. market in November 2025 after years of blocking American users, and launched a regulated app in December 2025 under that approval. The Defiant covered Zuckerberg’s move to order Meta to build a competing prediction-market app codenamed Arena and to explore potential partnerships with Polymarket and Kalshi.

The CFTC investigation is ongoing with no timeline announced. Polymarket has not disclosed when affected users will receive their refunds.

Old ETH Wallet Selling Tests Whale Conviction at $1.5K

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Eight-year-old Ether (ETH) wallets have started moving coins for the first time since 2017, adding fresh supply to the market as Ether trades just above $1,500. Onchain data shows 37,806 ETH from long-dormant addresses became active, while separate whale transactions point to continued accumulation by other large investors. 

The mixed positioning comes as total long-term ETH whale profitability has fallen below zero for the first time since 2019, leaving every major whale cohort sitting on unrealized losses. 

ETH whale traders are split between accumulation and distribution

According to Lookonchain, four Ethereum wallets that received 37,602 ETH nearly eight years ago at an average price of around $830 became active after years of dormancy. The wallets held through the 2021 and 2025 bull markets, when their unrealized gains exceeded $150 million, sold 33,623 ETH for about $52.5 million at around $1,560 on Thursday. The realized profit now stands near $27.4 million.

OG ETH wallets holding period. Source: Lookonchain/X

Fresh ETH selling has appeared alongside continued buying from other large holders. Blockchain tracker Lookonchain reported that one whale swapped 464 BTC worth $27.6 million for 17,750 ETH, signaling capital rotation into Ether. 

Meanwhile, investor Chun Wang also acquired another 9,937 ETH and 147 wrapped Bitcoin. Over the past month, Wang has withdrawn almost 87,000 ETH from Binance at an average purchase price of $1,749.

Institutional ETH trading also remained active. BlackRock transferred 41,996 ETH and 4,577 BTC to Coinbase Prime, a move commonly associated with custody or operational management rather than a confirmed market sale.

Crypto analyst Darkfost noted that Ether whales holding between 1,000 ETH and more than 100,000 ETH are all sitting on negative unrealized profit ratios. This marks the first time since 2019 that every major whale cohort has been underwater. 

ETH whales’ unrealized profit ratio. Source: X

The analyst said that periods when whale conviction was tested by ETH prices, it often aligned with long-term bottom zones. The current scenario indicates that large holders are facing greater overall pressure in 2026, even as selective ETH accumulation persists.

Related: Tether stablecoin flips Ether by market cap as ETH routs to $1.5K

$1,500 level for ETH draws trader focus

Ether dropped to $1,510 during Thursday’s sell-off, though it avoided setting a new yearly low even as Bitcoin fell to fresh 2026 lows. 

Crypto trader Ardi described $1,500 as Ether’s key long-term support, arguing that daily closes below that level challenge the bullish assumptions built up since the 2022 bear market. 

Ether/USD, one-week chart. Source: Ardi/X

Crypto investor Jelle shared a similar view, saying a sustained break would send Ether back into a trading range last seen in early 2023. Weekly price action shows ETH has defended the $1,500 region during several major corrections since mid-2022, making it one of the altcoin’s longest-standing support zones. 

However, not all market participants expect a near-term recovery. Popular trader Cyclops identified the $1,070–$1,370 range as a potential accumulation zone, citing it as a key demand area established in early 2023. A move into that range would also see ETH break below its multi-year ascending trendline, a technical development that could further delay a sustained recovery and reinforce the broader bearish market structure. 

ETH/USD, one-week chart. Source: Cointelegraph/TradingView

Related: XRP risks drop below $1, but onchain data highlights silver lining

US Senators Push to End CFTC ‘Assault’ on State Oversight of Prediction Markets

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A group of 17 Democratic US senators is pressing leadership in a key committee to address the Commodity Futures Trading Commission (CFTC) using federal funds in lawsuits against state-level authorities cracking down on prediction markets.

In a Wednesday letter to the chair and ranking member of the Senate Appropriations Subcommittee on Financial Services and General Government, Senator Richard Blumenthal, Senator Jeff Merkley and 15 other Democrats urged the committee leadership to block the CFTC from using federal funds in Chair Michael Selig’s legal fights against state gaming authorities. Selig has defended the agency’s position that the CFTC has “exclusive jurisdiction” over prediction markets by claiming that the event contracts on the platforms qualify as “swaps” under its purview.

“Through engaging in this campaign of litigation and intimidation, the CFTC risks becoming an instrument and enabler of online prediction markets’ efforts to bypass states’ consumer protections and oversight, creating a race-to-the-bottom in gambling,” said the senators.

Source: Senator Richard Blumenthal

The CFTC has engaged in legal fights involving prediction markets in Connecticut, Illinois, Arizona, Kentucky, Wisconsin, New York, Minnesota, Rhode Island and New Mexico as of June. Some of the companies involved, including Kalshi and Polymarket, have filed their own lawsuits against state authorities, backing the CFTC’s position.

Related: 21shares trims 2026 crypto forecasts despite institutional adoption gains

The ongoing legal battles have led some experts to expect that one of the cases involving the CFTC and state gaming regulators could ultimately reach the US Supreme Court. In its 2018 ruling in Murphy v. National Collegiate Athletic Association, the Court held that individual states have the authority to regulate sports betting. If the justices grant a writ of certiorari in one of the current cases, they could revisit questions about the scope of that authority.

Selig steers CFTC alone amid broader debate over the agency’s authority

As the sole commissioner and chair of the CFTC, Selig has unilaterally led the agency’s policy agenda under US President Donald Trump, vowing to go after state authorities that crack down on prediction markets. While the CFTC’s leadership is expected to consist of a bipartisan group of five commissioners, Trump has not announced any intention of filling the seats as of Friday.

Selig’s actions come as the US Senate is expected to soon vote on the Digital Asset Market Clarity (CLARITY) Act, which would establish separate regulatory roles for the CFTC and Securities and Exchange Commission over digital assets. Last week, gaming organizations petitioned the Senate to add language barring sports event contracts in the CLARITY Act, arguing that the CFTC wasn’t created to regulate such wagers.

Magazine: Bitcoin slides to $58K, XRP hits $1 but onchain data promising: Market Moves

Virtuals’ Jansen Teng says AI agents are evolving into autonomous economic actors

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Latest developments: Teng says Virtuals has expanded beyond gaming-focused AI agents and is now building infrastructure for what it calls an “agent society.”

  • The company began by creating autonomous agents for gaming before expanding into crypto influencers, trading agents and other autonomous software systems.
  • Virtuals now focuses on five pillars: creating digital agents, creating physical agents and robots, enabling agent coordination, supporting capital formation and building governance systems for agents.
  • Teng described the long-term vision as a “parallel society” where agents participate in a permissionless economy and collaborate with each other at scale.

What this means: The company believes AI agents will increasingly handle economic activity without constant human oversight.

  • Teng said Virtuals’ vision centers on agents that can control wallets, trade with one another and perform specialized tasks.
  • He argued that giving agents access to money unlocks new behaviors, including hiring other agents, coordinating work and potentially employing humans.
  • The company refers to these systems as “autonomous economic actors,” capable of pursuing goals with growing independence from their creators.

The complication: Agent autonomy creates new risks around mistakes, fraud and accountability.

  • Teng identified three major failure points: incorrect user intent, failures in service fulfillment and outright scams.
  • Virtuals is working on mechanisms including intent verification systems, escrow-based transaction standards and reputation frameworks designed to reduce economic risk.
  • Teng argued that reputation systems and economic staking mechanisms could eventually determine how much trust and capital an agent is allowed to manage.