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An unknown attacker prompted Ethereum developers to roll out a “private fix” as the network grappled with technical issues during the Pectra upgrade on the Sepolia testnet. In a post-incident report , Ethereum developer Marius van der Wijden revealed that the attacker exploited an overlooked “edge case,” repeatedly triggering errors by sending zero-token transfers to the deposit contract, further complicating an already troubled rollout. On March 5, the Pectra upgrade went live on Sepolia, but almost immediately, developers started seeing error messages popping up on their geth nodes, alongside an increase in empty blocks being mined. According to van der Wijden, the issue stemmed from the deposit contract emitting an unexpected event—a transfer event instead of the required deposit event—which caused nodes to reject transactions and produce only empty blocks. The bug was linked to EIP-6110, which required all logs from the deposit contract to be processed uniformly. The geth team rolled out a fix that would “ignore all erroneous logs coming from the deposit contract,” but developers reportedly overlooked a specific edge case in the ERC-20 standard. “The ERC20 standard does not forbid 0 token transfer, this allows anyone (even if they don’t own any token) to transfer 0 tokens to another address which will emit an event,” van der Wijden explained, adding that an “attacker” took advantage of this by repeatedly sending zero-token transfers to the deposit contract. This triggered the same error and caused the network to continue mining empty blocks. Initially, developers suspected a trusted validator had made a mistake, but upon investigation, they traced the issue to a newly funded account from a public faucet. To stop the attack, developers needed to filter out transactions interacting with the deposit contract. However, they suspected that the attacker was monitoring their chats, which prompted them to roll out a “private fix” to select DevOps nodes controlling about 10% of the network. Once the fix was deployed, nodes resumed producing full blocks, allowing the chain to function normally by 14:00 UTC. A few blocks later, the attacker’s transaction was successfully mined, confirming that all node operators had updated. Despite the disruptions, Ethereum “never lost finalization”, and the issue was limited to Sepolia, as its token-gated deposit contract differed from the Ethereum mainnet deposit contract, according to van der Wijden. Nevertheless, developers have decided to delay the Pectra upgrade for further testing and debugging. What is Ethereum’s Pectra upgrade? The Pectra fork is designed to enhance ETH staking, improve layer 2 scalability, and expand network capacity. It introduces 11 Ethereum Improvement Proposals (EIPs) and marks the first major upgrade since Dencun , which went live in March 2024. As previously reported by crypto.news, developers planned to deploy Pectra on the mainnet by April 8, provided that both the Holesky and Sepolia testnets successfully completed their upgrades. The upgrade was first implemented on the Holesky testnet on February 24, where it also ran into technical issues that prevented finalization.

First week results: (10RR) Shared and live executed in chroma tracker.

It was obvious $BTC wouldn't continue to range around $102k - $97k. In the last couple of days $BTC price has steadied at $85k - $92k as miners doubled down on accumulation. Since Feb 28, their selling activity has been minimal, hinting at a supply squeeze brewing. Meanwhile, whale holdings just hit a six-year low despite $BTC running past $100K. Is that smart money rotation or early exit signals? ◢ Regardless, miners are holding strong: > $BTC miner reserves surged to 1.81M $BTC, suggesting confidence in a continued uptrend. > Historically, miner accumulation precedes major rallies ◢ And the whales? Large $BTC holders are offloading, marking the lowest whale supply since 2019. When whales sell into strength, it’s usually a sign of market shifts, maybe bull trap or just a healthier distribution? Also, since spot Bitcoin ETFs went live, inflation has been a major factor to consider when analyzing $BTC ➜ Inflation & BTC Correlation The Breakeven Inflation Rate (BIR) is sliding, falling from 2.6% to 2.4%, which historically weakens $BTC’s appeal as an inflation hedge. If BIR drops to 2.2%, we might see increased selling pressure as institutional capital pivots back to traditional assets. ✍️ My Take Miners stacking while whales exit makes this an unusual cycle shift. Either $BTC surges higher as supply tightens, or macro forces take control. Either way, liquidity games are in motion, stay sharp 👀

GM, if you missed the past 24 hours in crypto, here's your full recap - no fluff, just facts. 🚨---- Major Headlines ----🚨 → Both $BTC and $ETH show weakness as $BTC retests $80K and $ETH falls below $2,000. → With this crypto market correction, $170B has been wiped out from the crypto market. → This brought total trading liquidations to $580M, with $520M coming from long positions. → Upon the US futures market open, $NQ saw a sharp 150-point sell-off, while $ES experienced a 33-point decline. → China has imposed 100% tariffs on select Canadian imports. → US banks can now operate as $ETH validators. This means they can stake, validate, and earn rewards for $ETH transactions. → Voting has begun on Solana’s SIMD-0228 proposal, which could reduce $SOL inflation by 80%. Currently, 15% of the voting power has been cast, with 77.5% of votes in favor. → El Salvador has bought more BTC for its reserves, bringing its total holdings to 6,111 BTC. → Top insider token unlocks this week: • $APT (40.5M) • $ARB (37.5M) • $CONX (24.6M) → Upcoming macro events to watch this week: • Core CPI (March 12) • Core PPI (March 13) • Prelim Consumer Sentiment (March 15) • Prelim Inflation Expectations (March 15) 📊---- Altcoin Market Updates ----📊 → OTHERS (market cap excluding the top 10) has reached $217B, the lowest level since before Trump's election win. 📉 With this dip, the most significant narrative mindshare loser is AI, down 2%. 📉 The top price losers among AI are $FAI -28%, $QUBIC -25%, and $PAAL -24%. 📉 Other notable price losers include $GIGA -23%, $MPL -22%, and $SPX -19%. 📈 Among the top 100 cryptos, the only coin that is up is $IP at +4%. 📈 Outside the top 100, notable price gainers include $RARE +50%, $TMG +33%, and $B3 +29%. 📈 The top narrative mindshare gainer is RWA at +0.80%. 📈 The top trending RWA coins are $ONDO, $PLUME, and $OM. → Within RWA, @ChintaiNetwork's CEO did a $2M buyback of $CHEX. → @ChintaiNetwork's total value signed has reached a new ATH of nearly $2B, almost 10x their current market cap. → @bubblemaps has announced their $BMT coin will be live on March 11. → PumpFun's 24H volume has fallen to $667,000, the lowest level in 7 months. If you enjoyed this daily roundup, make sure to follow me @milesdeutscher- I'll see you tomorrow.