Here’s what happened in crypto today

Today in crypto, Strategy co-founder Michael Saylor hints at impending BTC purchase, the Lazarus Group, the primary suspect behind the $1.4 billion Bybit hack, may also be linked to recent Solana memecoin scams, and an Ethereum core developer said rolling back the Ethereum network may not be the best idea.Saylor posts Sunday chart signaling impending BTC purchaseStrategy co-founder Michael Saylor posted the chart that signals an impending Bitcoin purchase on the following day. The chart, which has become somewhat of a Sunday ritual for the executive, was not posted last week as the company took a one-week break from buying."I don't think this reflects what I got done last week," the executive wrote in a Feb. 23 X post, in a nod to a recent move by Elon Musk and the Department of Government Efficiency (DOGE) instructing federal employees to submit a list of five things they got done last week.The company currently has 478,740 BTC, valued at roughly $45.8 billion, and is up over 47% on its investment. Strategy also issued $2 billion in convertible bonds on Feb. 20 to purchase more of the decentralized, supply-capped asset.Bybit hackers may be behind Solana memecoin scams — ZachXBTThe Lazarus Group, the primary suspect behind the $1.4 billion Bybit hack, may also be linked to recent Solana memecoin scams, including rug pulls on the Pump.fun platform, according to onchain investigator ZachXBT.The crypto industry was rocked by the largest hack in history on Feb. 21, when Bybit lost over $1.4 billion in liquid-staked Ether (stETH), Mantle Staked ETH (mETH) and other digital assets.Blockchain security firms, including Arkham Intelligence, have identified North Korea’s Lazarus Group as the likely culprit behind the Bybit exploit. The same entity laundering the hacked Bybit funds may also be responsible for some of the recent memecoin launches on Solana’s Pump.fun, according to ZachXBT.“On Feb 22 the attacker received $1.08M from the Bybit hack to 0x363908df2b0890e7e5c1e403935133094287d7d1 who bridged USDC to Solana,” ZachXBT wrote in in a Feb. 23 Telegram post.The $1 million was then consolidated across multiple wallets on Solana, some of which had previous links to memecoin scams, the investigator added.“I made 920+ addresses receiving funds tied to the Bybit hack public and noticed a person laundering for Lazarus Group previously launched meme coins via Pump Fun,” he said.Ethereum rollback deemed “technically intractable” amid Bybit hack pressureDespite growing calls from the crypto industry to roll back the Ethereum network to its pre-Feb. 21 state, before the Lazarus Group’s $1.5 billion hack on crypto exchange Bybit, Ethereum core developer Tim Beiko warns against the idea. He says such a move would be complex and carry significant consequences.“It’s worth breaking down why this reasonably sounding proposal is technically intractable for less knowledgeable observers,” Beiko said in a Feb. 22 X post. The Bybit hack on Feb. 21 happened after a transfer from the exchange’s multisig wallet to a warm wallet, which looked legitimate but had malicious code that altered the smart contract logic to steal funds.“A compromised interface made it appear as though a transaction was doing one thing while it was actually doing another,” Beiko said. Crypto commentators have been advocating ever since for an Ethereum rollback to reverse the hack, invalid the transactions, and recover Bybit’s funds.