Litecoin’s Blockchain Outage Ends Its Two-Year Mockery of Solana’s Downtime

Litecoin’s Two-Year Jabs at Solana End in Humiliating Reversal

For over two years, Litecoin’s official social media accounts ridiculed Solana’s blockchain outages with sarcastic remarks and memes. This weekend, Litecoin’s blockchain suffered its own denial-of-service attack and double-spending incident, forcing the Litecoin Foundation to confront its own claims of "100% uptime."

How Litecoin’s Blockchain Split and Reorganized

A consensus bug in Litecoin’s Mimblewimble privacy upgrade (MWEB) allowed an attacker to mint invalid coins. The attacker rapidly traded the fraudulent LTC for other digital assets on crypto exchanges before honest miners could intervene. This triggered a blockchain split, resulting in a 32-minute de facto downtime.

Due to unusually slow mining times during the attack, it took over three hours in real-time to produce the 13 replacement blocks that would have normally covered just 32 minutes of transactions.

Litecoin’s 13-Block Reorganization Explained

The Litecoin Foundation later detailed the 13-block reorganization to its followers, confirming the network’s temporary instability. The incident exposed vulnerabilities in Litecoin’s privacy upgrade, which had been touted as a key differentiator.

Litecoin’s Past Mockery of Solana’s Outages

Just weeks before its own outage, Litecoin boasted of its "100% uptime," claiming its blockchain was "100% battle-tested." The Litecoin Foundation’s social media accounts spent 2024 and 2025 deriding Solana’s issues without addressing its own technical debt.

In June 2025, when Solana scheduled maintenance for a weekend, Litecoin tweeted:

"This way you can schedule your outages for the weekends. Good call."

Litecoin also replied to a Solana status update with a single word:

"Downtime."

Later that month, the two networks signed a tongue-in-cheek "ceasefire," with Litecoin jokingly promising to stop "mocking Solana for six hours" in exchange for Solana doing "just continue to not do anything."

Solana’s team declined to engage in the same humor this weekend. Vibhu Norby, Solana Foundation’s interim chief product officer, posted:

"I will not bring up the 1,000 times @litecoin dunked on Solana for downtime. Because we are better than this."

Technical Breakdown: The MWEB Exploit

The vulnerability resided in MWEB (Mimblewimble Extension Blocks), Litecoin’s privacy-focused transaction upgrade. Alex Shevchenko, CEO of Aurora Labs, documented the exploit in real time. The attacker submitted a malformed MWEB peg-out, which non-upgraded Litecoin mining nodes accepted as valid, releasing synthetic coins into the regular Litecoin blockchain.

The attacker then bridged the proceeds through THORChain and NEAR Intents to swap for ether. Honest miners running the patched 0.21.5.4 client rejected the attacker’s blocks, leading to a chain split.

After several hours, the patched chain reclaimed proof-of-work dominance, and the network reorganized blocks 3,095,930 through 3,095,943 out of existence. While the reversed transaction window was only 32 minutes, the real-time reversal took nearly three hours due to split hashpower between honest and exploited nodes.

Solana’s Response: No Gloating, Just Facts

Solana’s official account shared a lighthearted but pointed tweet on April 25, 2026, asking:

"How’s your weekend going little buddy?"
https://t.co/j4DzarJwnx

Solana’s refusal to engage in further mockery underscored its maturity compared to Litecoin’s past behavior. The incident serves as a reminder that no blockchain, regardless of its claims, is immune to technical failures.