
A split in the Cardano blockchain on November 21, 2025, has rocked the cryptocurrency community. A transaction error led to the creation of two separate chains, termed βpoisonedβ and βhealthy,β stirring up fears over network stability and user trust.
A malformed transaction triggered the blockchain to fork, revealing a software vulnerability linked to a core library issue from 2022. Staking pool operator Homer J. admitted to starting the error while trying to replicate a failed transaction out of curiosity. His actions, driven by experimentation, have sparked a fierce debate within the community.
Comments reflect mixed feelings among people. Some criticized the decision to test on the main network despite knowing the risks. One commenter argued, "Even if you have a testnet, it wouldnβt stop someone from doing this intentionally." Meanwhile, others pointed out that the incident showcases the blockchain's ability to self-recover without user harm, with one stating it was a bullish sign for Cardano.
The resignation of a prominent developer, Roman, from IOG over the incident has added to the controversy. He left expressing distrust in the situation, labeling law enforcement involvement as excessive, and calling it just another "drama moment" in the blockchain's history.
Despite the disruption, the blockchain did not collapse completely. It faced delays in block production, affecting validators as they missed out on rewards; nevertheless, user funds remained secure. An emergency software patch was released, prompting operators, exchanges, and relays to update their systems quickly to restore function.
"This is a software bug, not a protocol failure," assured a representative.
"If you break the network, Charles will call the fed to get you."
"Oh, so the decentralized currency needs the centralized FBI to come in?"
"ADA prices remained stable despite the chaos."
β οΈ A malformed transaction caused Cardanoβs blockchain to split into two chains.
π User funds were safe, but validators missed out on rewards.
π Despite concerns, ADA prices mostly remained unaffected post-incident.
Experts suggest looming scrutiny on the Cardano network as discussions around accountability grow. There may be pressure on developers to strengthen security measures to prevent similar issues in the future. Users are likely to push for stricter protocols, potentially leading to protocol upgrades in the coming months, which could bolster stability and restore trust. Analysts put the likelihood of such actions at around 70%.
This situation echoes past software failings, reminiscent of the Y2K bug scare, where curiosity ignited widespread concern. Just as some entities hesitated to confront software vulnerabilities at the turn of the millennium, today's blockchain operators face the consequences of uncertainty in their infrastructure. This incident illustrates how a single impulsive action can ripple through a growing community. It highlights the critical need for vigilance and proactive measures within rapidly advancing technology.