Business
The Protocol: ETH Exit Queue Gridlocks As Validators Pile Up

Welcome to The Protocol, CoinDesk’s weekly wrap of the most important stories in cryptocurrency tech development. I’m Margaux Nijkerk, a reporter at CoinDesk.
In this issue:
- Ethereum Faces Validator Bottleneck With 2.5M ETH Awaiting Exit
- Is Ethereum’s DeFi Future on L2s? Liquidity, Innovation Say Perhaps Yes
- Ethereum Foundation Starts New AI Team to Support Agentic Payments
- American Express Introduces Blockchain-Based ‘Travel Stamps’
Network News
ETHEREUM VALIDATOR EXIT QUEUE FACES BOTTLENECK: Ethereum’s proof-of-stake system is facing its largest test yet. As of mid-September, roughly 2.5 million ETH — valued at roughly $11.25 billion — is waiting to leave the validator set, according to validator queue dashboards. The backlog pushed exit wait times to more than 46 days on Sept. 14, the longest in Ethereum’s short staking history, dashboards show. The last peak, in August, put the exit queue at 18 days. The initial spark came on Sept. 9, when Kiln, a large infrastructure provider, chose to exit all of its validators as a safety precaution. The move, triggered by recent security incidents including the NPM supply-chain attack and the SwissBorg breach, pushed around 1.6 million ETH into the queue at once. Though unrelated to Ethereum’s staking protocol itself, the hacks rattled confidence enough for Kiln to hit pause, highlighting how events in the broader crypto ecosystem can cascade into Ethereum’s validator dynamics. In a blog post from staking provider Figment, Senior Analyst Benjamin Thalman noted that the current exit queue build up isn’t only about security. After ETH has rallied more than 160% since April, some stakers are simply taking profits. Others, especially institutional players, are shifting their portfolios’ exposure. At the same time, the number of validators entering the Ethereum staking ecosystem has been steadily rising. Ethereum’s churn limit, which is a protocol safeguard that caps how many validators can enter or exit over a certain time period, is currently capped at 256 ETH per epoch (about 6.4 minutes), restricting how quickly validators can join or leave the network. The churn limit is meant to keep the network stable. With more than 2.5M ETH lined up, stakers on Sept. 16 face 44 days before even reaching the cooldown step. — Margaux Nijkerk Read more.
IS L2 DEFI EATING AT ETHEREUM’S L1 DEFI?: Ethereum is in the midst of a paradox. Even as ether hit record highs in late August, decentralized finance (DeFi) activity on Ethereum’s layer-1 (L1) looks muted compared to its peak in late 2021. Fees collected on mainnet in August were just $44 million, a 44% drop from the prior month. Meanwhile, layer-2 (L2) networks like Arbitrum and Base are booming, with $20 billion and $15 billion in total value locked (TVL) respectively. This divergence raises a crucial question: are L2s cannibalizing Ethereum’s DeFi activity, or is the ecosystem evolving into a multi-layered financial architecture? AJ Warner, the chief strategy officer of Offchain Labs, the developer firm behind layer-2 Arbitrum, argues that the metrics are more nuanced than just layer-2 DeFi chipping at the layer 1.In an interview with CoinDesk, Warner said that focusing solely on TVL misses the point, and that Ethereum is increasingly functioning as crypto’s “global settlement layer,” a foundation for high-value issuance and institutional activity. Products like Franklin Templeton’s tokenized funds or BlackRock’s BUIDL product launch directly on Ethereum L1 — activity that isn’t fully captured in DeFi metrics but underscores Ethereum’s role as the bedrock of crypto finance. Ethereum as a layer-1 blockchain is the secure but relatively slow and expensive base network. Layer-2s are scaling networks built on top of it, designed to handle transactions faster and at a fraction of the cost before ultimately settling back to Ethereum for security. That’s why they’ve become so appealing to traders and builders alike. Metrics like TVL, the amount of crypto deposited in DeFi protocols, highlight this shift as activity is moved to L2s where lower fees and quicker confirmations make everyday DeFi far more practical. — Margaux Nijkerk Read more.
EF STARTS DECENTRALIZED AI TEAM: The Ethereum Foundation (EF) is creating a dedicated artificial intelligence (AI) group to make Ethereum the settlement and coordination layer for what it calls the “machine economy,” according to research scientist Davide Crapis. Crapis, who announced the initiative on X, said the new dAI Team will pursue two priorities: enabling AI agents to pay and coordinate without intermediaries, and building a decentralized AI stack that avoids reliance on a small number of large companies. He said Ethereum’s neutrality, verifiability and censorship resistance make it a natural base layer for intelligent systems. The EF is a non-profit organization based in Zug, Switzerland, that funds and coordinates the development of the Ethereum blockchain. It does not control the network but plays a catalytic role by supporting researchers, developers and ecosystem projects. Its remit includes funding upgrades such as Ethereum 2.0, zero-knowledge proofs and layer-2 scaling, alongside community programs like the Ecosystem Support Program. The foundation also organizes events such as Devcon to foster collaboration and acts as a policy advocate for blockchain adoption. In 2025, EF restructured to handle Ethereum’s growth, emphasizing ecosystem acceleration, founder support and enterprise outreach. The new dAI Team represents a continuation of this shift toward specialized units addressing emerging technologies. — Siamak Masnavi Read more.
AMERICAN EXPRESS DABBLES IN BLOCKCHAIN TRAVEL STAMPS: American Express has introduced Ethereum-based «travel stamps» to create a commemorative record of travel experiences. The travel experience tokens, which are technically NFTs (ERC 721 tokens), are minted and stored on Coinbase’s Base network, said Colin Marlowe, vice president of Emerging Partnerships at Amex Digital Labs. The travel stamps, which can be collected anytime a traveler uses their card, are not tradable NTF tokens, Marlowe said, and neither do they function like blockchain-based loyalty points — at least for the time being. “It’s a valueless ERC-721, so technically an NFT, but we just didn’t brand it as such. We wanted to speak to it in a way that was natural for the travel experience itself, and so we talk about these things as stamps, and they’re represented as tokens,” Marlowe said in an interview. “As an identifier and representation of history the stamps could create interesting partnership angles over time. We weren’t trying to sell these or sort of generate any like short term revenue. The angle is to make a travel experience with Amex feel really rich, really different, and kind of set it apart,” he said. Fireblocks is also involved, supporting Amex as its Wallet-as-a-Service provider for the passport product, a Fireblocks representative said. The Amex travel app also includes a range of tools for travels and Centurion Lounge upgrades, the company said. – Ian Allison Read more.
In Other News
- Blockchain-based real world asset (RWA) specialists Centrifuge and Plume have launched the Anemoy Tokenized Apollo Diversified Credit Fund (ACRDX), backed by a $50 million anchor investment from Grove, a credit infrastructure protocol within the Sky Ecosystem. The fund gives blockchain investors exposure to Apollo’s diversified global credit strategy, spanning direct corporate lending, asset-backed lending and dislocated credit, a type of mispriced debt due to market stress and lack of liquidity. ACRDX will be distributed through Plume’s Nest Credit vaults under the ticker nACRDX, making the strategy accessible to institutional investors on-chain. By packaging Apollo’s portfolio in tokenized form, the fund aims to lower entry barriers and increase transparency for investors seeking exposure to private credit markets, according to a press release. — Ian Allison Read more.
- Google is taking a step toward merging artificial intelligence (AI) and digital money, rolling out a new open-source protocol that lets AI applications send and receive payments, which includes support for stablecoins, digital tokens pegged to fiat currencies such as the U.S. dollar, according to a press release. To incorporate stablecoin rails, Google teamed up with the U.S.-based crypto exchange Coinbase, which has been developing its own AI-integrated payments infrastructure. The company also worked with the Ethereum Foundation and coordinated with more than 60 other organizations, including Salesforce, American Express and Etsy, to cover traditional finance use cases. The move builds on Google’s earlier work to establish a standard for “AI agents.” These digital agents may eventually handle complex tasks, such as negotiating mortgages or shopping for clothes, without direct human input. — Oliver Knight Read more.
Regulatory and Policy
- Contrary to claims from the U.S. banking industry, stablecoins do not pose a risk to the financial system, according to the chief policy officer at crypto exchange Coinbase (COIN), Faryar Shirzad. Banks’ claims that they do are are myths crafted to defend their revenues, he wrote in a blog post. «The central claim — that stablecoins will cause a mass outflow of bank deposits — simply doesn’t hold up,» Shirzad wrote. «Recent analysis shows no meaningful link between stablecoin adoption and deposit flight for community banks and there’s no reason to believe big banks would fare any worse.» Larger lenders still hold trillions of dollars at the Federal Reserve and if deposits were really at risk, he argued, they would be competing harder for customer funds by offering higher interest rates rather than parking cash at the central bank. According to Shirzad, the real reason for banks’ opposition is the payments business. Stablecoins, digital tokens whose value is pegged to a real-life asset such as the dollar, offer faster and cheaper ways to move money, threatening an estimated $187 billion in annual swipe-fee revenue for traditional card networks and banks. He compared the current pushback to earlier battles against ATMs and online banking, when incumbents warned of systemic dangers but, he said, were ultimately trying to protect entrenched profits. — Jesse Hamilton Read more.
- U.S. SEC Chair Paul Atkins said crypto’s time has come, pledging to modernize the U.S. securities rulebook and expand “Project Crypto” to bring markets on-chain. Speaking in Paris on Sept. 10 at the OECD’s inaugural Roundtable on Global Financial Markets, Atkins said the SEC is shifting away from enforcement-driven policymaking and will provide clear rules for tokens, custody, and trading platforms. “Policy will no longer be set by ad hoc enforcement actions,” he said, calling the new approach “a golden age of financial innovation on U.S. soil.” Atkins said most tokens are not securities and promised bright-line rules for determining when crypto assets fall under SEC oversight. He said entrepreneurs must be able to raise capital on-chain without “endless legal uncertainty” and pledged a framework for platforms that integrate trading, lending, and staking under one license. Custody rules will also be updated to allow investors and intermediaries multiple options. — Siamak Masnavi Read more.
Calendar
- Sept. 22-28: Korea Blockchain Week, Seoul
- Oct. 1-2: Token2049, Singapore
- Oct. 13-15: Digital Asset Summit, London
- Oct. 16-17: European Blockchain Convention, Barcelona
- Nov. 17-22: Devconnect, Buenos Aires
- Dec. 11-13: Solana Breakpoint, Abu Dhabi
- Feb. 10-12, 2026: Consensus, Hong Kong
- Mar. 30-Apr. 2: EthCC, Cannes
- May 5-7, 2026: Consensus, Miami
Business
AAVE Sees 64% Flash Crash as DeFi Protocol Endures ‘Largest Stress Test’

The native token of Aave (AAVE), the largest decentralized crypto lending protocol, was caught in the middle of Friday’s crypto flash crash while the protocol proved resilient in a historic liquidation cascade.
The token, trading at around $270 earlier in Friday, nosedived as much as 64% later in the session to touch $100, the lowest level in 14 months. It then staged a rapid rebound to near $240, still down 10% over the past 24 hours.
Stani Kulechov, founder of Aave, described Friday’s event as the «largest stress test» ever for the protocol and its $75 billion lending infrastructure.
The platform enables investors to lend and borrow digital assets without conventional intermediaries, using innovative mechanisms such as flash loans. Despite the extreme volatility, Aave’s performance underscores the evolving maturity and resilience of DeFi markets.
«The protocol operated flawlessly, automatically liquidating a record $180M worth of collateral in just one hour, without any human intervention,» Kulechov said in a Friday X post. «Once again, Aave has proven its resilience.»
Key price action:
- AAVE sustained a dramatic flash crash on Friday, declining 64% from $278.27 to $100.18 before recuperating to $240.09.
- The DeFi protocol demonstrated remarkable resilience with its native token’s 140% recovery from the intraday lows, underpinned by substantial trading volume of 570,838 units.
- Following the volatility, AAVE entered consolidation territory within a narrow $237.71-$242.80 range as markets digested the dramatic price action.
Technical Indicators Summary
- Price range of $179.12 representing 64% volatility during the 24-hour period.
- Volume surged to 570,838 units, substantially exceeding the 175,000 average.
- Near-term resistance identified at $242.80 capping rebound during consolidation phase.
Disclaimer: Parts of this article were generated with the assistance from AI tools and reviewed by our editorial team to ensure accuracy and adherence to our standards. For more information, see CoinDesk’s full AI Policy.
Business
Blockchain Will Drive the Agent-to-Agent AI Marketplace Boom

AI agents, software systems that use AI to pursue goals and complete tasks on behalf of users, are proliferating. Think of them as digital assistants that can make decisions and take actions towards goals you set without needing step-by-step instructions — from GPT-powered calendar managers to trading bots, the number of use cases is expanding rapidly. As their role expands across the economy, we have to build the right infrastructure that will allow these agents to communicate, collaborate and trade with one another in an open marketplace.
Big tech players like Google and AWS are building early marketplaces and commerce protocols, but that raises the question: will they aim to extract massive rents through walled gardens once more? Agents’ capabilities are clearly rising, almost daily, with the arrival of new models and architectures. What’s at risk is whether these agents will be truly autonomous.
Autonomous agents are valuable because they unlock a novel user experience: a shift from software as passive or reactive tools to active and even proactive partners. Instead of waiting for instructions, they can anticipate needs, adapt to changing conditions, and coordinate with other systems in real time, without the user’s constant input or presence. This autonomy in decision-making makes them uniquely suited for a world where speed and complexity outpace human decision-making.
Naturally, some worry about what greater decision-making autonomy means for work and accountability — but I see it as an opportunity. When agents handle repetitive, time-intensive tasks and parallelize what previously had to be done in sequence, they expand our productive capacity as humans — freeing people to engage in work that demands creativity, judgment, composition and meaningful connection. This isn’t make-believe, humanity has been there before: the arrival of corporations allowed entrepreneurs to create entirely new products and levels of wealth previously unthought of. AI agents have the potential to bring that capability to everyone.
On the intelligence side, truly autonomous decision-making requires AI agent infrastructure that is open source and transparent. OpenAI’s recent OSS release is a good step. Chinese labs, such as DeepSeek (DeepSeek), Moonshot AI (Kimi K2) and Alibaba (Qwen 3), have moved even quicker.
However, autonomy is not purely tied to intelligence and decision making. Without resources, an AI agent has little means to enact change in the real world. Hence, for agents to be truly autonomous they need to have access to resources and self-custody their assets. Programmable, permissionless, and composable blockchains are the ideal substrate for agents to do so.
Picture two scenarios. One where AI agents operate within a Web 2 platform like AWS or Google. They exist within the limited parameters set by these platforms in what is essentially a closed and permissioned environment. Now imagine a decentralized marketplace that spans many blockchain ecosystems. Developers can compose different sets of environments and parameters, therefore, the scope available to AI agents to operate is unlimited, accessible globally, and can evolve over time. One scenario looks like a toy idea of a marketplace, and the other is an actual global economy.
In other words, to truly scale not just AI agent adoption, but agent-to-agent commerce, we need rails that only blockchains can offer.
The Limits of Centralized Marketplaces
AWS recently announced an agent-to-agent marketplace aimed at addressing the growing demand for ready-made agents. But their approach inherits the same inefficiencies and limitations that have long plagued siloed systems. Agents must wait for human verification, rely on closed APIs and operate in environments where transparency is optional, if it exists at all.
To act autonomously and at scale, agents can’t be boxed into closed ecosystems that restrict functionality, pose platform risks, impose opaque fees, or make it impossible to verify what actions were taken and why.
Decentralization Scales Agent Systems
An open ecosystem allows for agents to act on behalf of users, coordinate with other agents, and operate across services without permissioned barriers.
Blockchains already offer the key tools needed. Smart contracts allow agents to perform tasks automatically, with rules embedded in code, while stablecoins and tokens enable instant, global value transfers without payment friction. Smart accounts, which are programmable blockchain wallets like Safe, allow users to restrict agents in their activity and scope (via guards). For instance, an agent may only be allowed to use whitelisted protocols. These tools allow AI agents not only to behave expansively but also to be contained within risk parameters defined by the end user. For example, this could be setting spending limits, requiring multi-signatures for approvals, or restricting agents to whitelisted protocols.
Blockchain also provides the transparency needed so users can audit agent decisions, even when they aren’t directly involved. At the same time, this doesn’t mean that all agent-to-agent interactions need to happen onchain. E.g. AI agents can use offchain APIs with access constraints defined and payments executed onchain.
In short, decentralized infrastructure gives agents the tools to operate more freely and efficiently than closed systems allow.
It’s Already Happening Onchain
While centralized players are still refining their agent strategies, blockchain is already enabling early forms of agent-to-agent interaction. Onchain agents are already exhibiting more advanced behavior like purchasing predictions and data from other agents. And as more open frameworks emerge, developers are building agents that can access services, make payments, and even subscribe to other agents — all without human involvement.
Protocols are already implementing the next step: monetization. With open marketplaces, people and businesses are able to rent agents, earn from specialized ones, and build new services that plug directly into this agent economy. Customisation of payment models such as subscription, one-off payments, or bundled packages will also be key in facilitating different user needs. This will unlock an entirely new model of economic participation.
Why This Distinction Matters
Without open systems, fragmentation breaks the promise of seamless AI support. An agent can easily bring tasks to completion if it stays within an individual ecosystem, like coordinating between different Google apps. However, where third-party platforms are necessary (across social, travel, finance, etc), an open onchain marketplace will allow agents to programmatically acquire the various services and goods they need to complete a user’s request.
Decentralized systems avoid these limitations. Users can own, modify, and deploy agents tailored to their needs without relying on vendor-controlled environments.
We’ve already seen this work in DeFi, with DeFi legos. Bots automate lending strategies, manage positions, and rebalance portfolios, sometimes better than any human could. Now, that same approach is being applied as “agent legos” across sectors including logistics, gaming, customer support, and more.
The Path Forward
The agent economy is growing fast. What we build now will shape how it functions and for whom it works. If we rely solely on centralized systems, we risk creating another generation of AI tools that feel useful but ultimately serve the platform, not the person.
Blockchain changes that. It enables systems where agents act on your behalf, earn on your ideas, and plug into a broader, open marketplace.
If we want agents that collaborate, transact, and evolve without constraint, then the future of agent-to-agent marketplaces must live onchain.
Business
‘Largest Ever’ Crypto Liquidation Event Wipes Out 6,300 Wallets on Hyperliquid

More than 1,000 wallets on Hyperliquid were completely liquidated during the recent violent crypto sell-off, which erased over $1.23 billion in trader capital on the platform, according to data from its leaderboard.
In total, 6,300 wallets are now in the red, with 205 losing over $1 million each according to the data, which was first spotted by Lookonchain. More than 1,000 accounts saw losses of at least $100,000.
The wipeout came as crypto markets reeled from a global risk-off event triggered by U.S. President Donald Trump’s announcement of a 100% additional tariff on Chinese imports.
The move spooked investors across asset classes and sent cryptocurrency prices tumbling. Bitcoin briefly dropped below $110,000 and ether fell under $3,700, while the broader market as measured by the CoinDesk 20 (CD20) index dropped by 15% at one point.
The broad sell-off led to over $19 billion in liquidations over a 24 hours period, making it the largest single-day liquidation event in crypto history by dollar value. According to CoinGlass, the “actual total” of liquidations is “likely much higher” as leading crypto exchange Binance doesn’t report as quickly as other platforms.
Leaderboard data reviewed by CoinDesk shows the top 100 traders on Hyperliquid gained $1.69 billion collectively.
In comparison, the top 100 losers dropped $743.5 million, leaving a net profit of $951 million concentrated among a handful of highly leveraged short sellers.
The biggest winner was wallet 0x5273…065f, which made over $700 million from short positions, while the largest loser, “TheWhiteWhale,” dropped $62.5 million.
Among the victims of the flush is crypto personality Jeffrey Huang, known online as Machi Big Brother, who once launched a defamation suit against ZachXBT, losing almost the entire value of his wallet, amounting to $14 million.
«Was fun while it lasted,» he posted on X.
Adding to the uncertainty, the ongoing U.S. government shutdown has delayed the release of key economic data. Without official indicators, markets are flying blind at a time when geopolitical risk is rising.
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