The Dangerous Secret: How Child Porn Is Stored on the Bitcoin Blockchain

If you see a file from the Bitcoin blockchain on your computer, you won’t immediately experience the images’ content. However, studies have shown that child pornography can actually slip through the system in hidden ways. RWTH Aachen University released an important report containing an alarming discovery: there is an image of illegal content and 274 links connecting to child abuse material stored within the Bitcoin blockchain. The question posed by Ethereum developer Vlad Zamfir highlights a moral dilemma: Would you stop running your Bitcoin node if you knew it contained illegal content?

Why Child Pornography on Bitcoin Has Become a Legal Challenge

The report from the German university is not just a technical observation. It raises larger questions about law and responsibility. If downloading or sharing child pornography is a crime of sexual abuse, would participating in the Bitcoin network—either as a miner or node operator—become illegal because you are a partner in creating this network?

In the United States, this issue is particularly critical due to SESTA-FOSTA, a controversial law passed by Congress. This law makes Internet Service Providers (ISPs) and other internet users responsible for prohibited content shared on their platforms, even if they are unaware of the content. Before SESTA-FOSTA, Section 230 of the Communications Decency Act protected ISPs and internet users, stating they are not to be considered publishers or speakers of information provided by other