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Alchemy unveils Visa-powered virtual payment card for AI agents
AgentCard will default to Visa-issued tokens, but will support crypto and agent-native payment protocols when available.
Aztec investigates $2 million exploit of deprecated payments product
The immutable stage 2 rollup was sunset in 2022, and Aztec Labs holds no admin keys or control over the system, the t…
Aztec hit by second $2.1M exploit in less than a week: SlowMist
Security researchers warn that deprecated smart contracts can remain vulnerable long after projects stop maintaining …
Solana’s $1B USDC mint collides with DeFi app shutdown as users face unfinished Drift recovery
Users face a September exit deadline while fresh Solana minting signals show liquidity moving faster than recovery sy…
Live markets: Bitcoin and ether ETFs lost $111 million combined as rate-cut hopes died
Total market value has held flat near $2.26 trillion since Tuesday, with the recovery losing momentum after the Fed k…
France to stop certifying products lacking quantum-resistant encryption
France’s cybersecurity agency plans to block certification of products without quantum-resistant encryption startin…
Bitcoin layer-2s face a bear-market reality check
Botanix's shutdown has raised an uncomfortable question for Bitcoin builders: Does the market actually want programma…
FIFA wanted Avalanche's blockchain to help curb World Cup ticket scalping. Here's how it's going
In this week's edition of The Protocol Newsletter, we're looking at how FIFA is using the Avalanche blockchain to tes…
EarnOS launches anti-AI slop app, raises $6 million from 1kx, Circle and Coinbase
Ero app is designed to help brands verify human internet traffic, reduce wastes caused by bots, and reward "authentic…
A new Bittensor proposal would turn validators into something like fund managers
Root Reborn would have TAO validators pick which subnets to back and reinvest yield into, rather than constantly sell…
Zama, Morpho and Steakhouse launch first ‘confidential DeFi yield’ vault on Ethereum
Zama, Morpho and Steakhouse launch the first confidential DeFi yield vault on Ethereum, letting firms earn yield with…
Live markets: A bitcoin bottom signal flashed as holders absorbed 125,000 BTC in June
Bitcoin's Sharpe ratio hit a level that has marked every cycle low since 2015, but in each case it preceded months of…
Legacy Aztec Connect Contract Drained Of $2.1 Million Three Years After Shutdown
A legacy Aztec Connect contract was exploited years after shutdown, while current Aztec infrastructure remains unaffe…
Humanity Protocol Plans New H Token After $36 Million Key Compromise
Humanity Protocol is restructuring its H token after a $36 million exploit, but the incident appears tied to compromi…
Coinbase unveils ‘System Update’ unlocking an AI advisor, global unified liquidity, options trading and more
Coinbase's latest System Update includes a new AI-powered advisor and global unified liquidity between its U.S. and i…
Squid adds Ripple’s RLUSD stablecoin for cross-chain swaps
Cross-chain platform Squid has integrated Ripple's RLUSD stablecoin, allowing users to swap into and out of RLUSD acr…
Ethereum’s biggest protocol overhaul in years moves into its final development stage
Developers are entering the final stretch of work on Glamsterdam, the network's next major upgrade, as teams begin te…
Y Combinator reveals a new AI agent that can build and run an entire business just from a text message
Y Combinator's Locus Founder lets users text a business idea via iMessage, SMS, or Telegram, and the AI handles the r…
Coinbase, AWS enable publishers on CloudFront and WAF to charge AI agents via x402 protocol
Coinbase and AWS are allowing publishers on CloudFront and WAF to charge AI agents for content via the x402 protocol.
Live markets: Bitcoin ETFs bled cash Monday while every other crypto ETF gained
Ether, XRP, Solana and Hyperliquid funds all took in money, but bitcoin's outflow was really just Grayscale's GBTC.
Deprecated Aztec Connect Contract Exploited For $2.19M, SlowMist Says
SlowMist says a deprecated Aztec Connect smart contract was exploited for $2.19 million, highlighting the risks left …
‘Let’s just put it in an ETF’ is the worst outcome for bitcoin, says Trezor exec
Trezor Chief Commercial Officer Danny Sanders said simplifying self-custody remains one of bitcoin's biggest onboardi…
Bitcoin mining difficulty drops 10% in second-largest negative adjustment of 2026
The cut hands surviving miners roughly 11% more bitcoin per unit of active hashrate, but all-in production economics …
Aerodrome is turning liquidity into a prediction market with its biggest upgrade yet
The concept, called Predictive Allocation, will encourage participants to anticipate where liquidity will be needed n…
Ethereum can quantum-proof accounts for just 7 cents, says Ethereum's Kohaku lead
The SPHINCS- proposal aims to reduce the cost of post-quantum signature verification on Ethereum while the network wo…
Humanity Protocol’s $36M hack tied to suspected North Korean hackers: Quantstamp
A fake Bithumb email used in the $36 million Humanity Protocol hack points to the involvement of North Korean threat …
Coinbase quantum report flags exchange cold wallets among millions of bitcoin exposed by address reuse
The report lays out possible solutions to the abandoned coins problem, such as setting a deadline for migration and t…
Crypto’s next billion-dollar hacker may move at superhuman speed
Anthropic’s new Claude Fable 5 puts powerful cyber tools behind safety filters. DeFi, already hit by more than $840…
Ripple wants AI agents to pay in XRP and RLUSD. The market is still mostly USDC
The XRPL AI Starter Kit gives developers tools for agent payments, but early x402 activity has clustered on Base and …