Silk Road

Silk Road was an online marketplace that operated from early 2011 until October 2013 as a hidden service on the Tor network, part of the dark web. It allowed buyers and sellers to trade anonymously, mostly in illegal drugs, with payments made in bitcoin. Its founder and operator, Ross Ulbricht, ran it under the pseudonym "Dread Pirate Roberts".

Silk Road was the first large darknet market, an early case study in Tor and crypto mixer use, and became bitcoin's most notorious early use, shaping how regulators, the press and the public saw cryptocurrency for years. US law enforcement agencies, led by the Federal Bureau of Investigation, shut it down in 2013. Ulbricht was convicted in 2015 and sentenced to life in prison, then pardoned by President Donald Trump in January 2025. The bitcoin seized in the case and in later related investigations made the US government one of the largest known holders of bitcoin.

Picture a hidden market held in a building with no address, where everyone wears a mask and pays with tokens that do not carry their names. Sellers set up stalls, buyers leave reviews, and the market's owner holds payments in a strongbox until goods arrive, taking a cut of each sale. That was Silk Road's model, built online with tools for hiding identity.

The masks were not as good as users thought. Mistakes in the owner's own online history, together with patient investigation, led police to the person running the market, and the coins in the strongbox were confiscated.

• Anonymity tools. The site could be reached only through Tor, which hides users' internet addresses. Buyers and sellers used pseudonyms.
• Bitcoin payments. Buyers paid in bitcoin, which was then little known and widely, but wrongly, believed to be untraceable. Bitcoin's public ledger later helped investigators.
• Escrow. The site held buyers' payments and released them to sellers when orders were marked as received, taking a commission. This made the operator a central custodian of funds, much like a custodial exchange.
• Reputation. Ratings and feedback, borrowed from mainstream e-commerce, built trust between anonymous parties.

Most sales were of drugs. The site's rules banned some categories, such as stolen credit cards and weapons, though prosecutors argued that it still facilitated serious crime, including money laundering.

In October 2013 federal agents arrested Ulbricht in a public library in San Francisco while he was logged into the site's administration panel, and seized its servers. In February 2015 a jury in New York convicted him on charges including narcotics trafficking conspiracy, money laundering conspiracy and running a continuing criminal enterprise. In May 2015 he was sentenced to two life terms plus further years, without parole, a sentence his supporters called excessive for a first-time, non-violent offender. Appeals failed. Prosecutors had also alleged that he commissioned murders for hire, but he was not convicted of those allegations in the New York case.

The investigation produced its own scandals. Two federal agents who had worked on the case were convicted of stealing bitcoin during the inquiry. A successor site, Silk Road 2.0, opened within weeks and was shut down in 2014 in an international operation.

Ulbricht's sentence became a cause for libertarians and many in the crypto community, who campaigned for his release for years. During his 2024 campaign, Donald Trump pledged to commute it, and on 21 January 2025, the day after taking office, he granted Ulbricht a full and unconditional pardon.

The government seized tens of thousands of bitcoin from Silk Road's servers and a larger amount from Ulbricht's own computer in 2013, and sold much of it through US Marshals Service auctions in 2014 and 2015, at prices far below later values. Years later, investigators recovered further coins that had been stolen from Silk Road by hackers. In 2020 the government seized about 69,000 bitcoin linked to the site from a hacker's wallet, and in 2022 it announced the seizure of about 50,000 bitcoin from James Zhong, who pleaded guilty to wire fraud for stealing them from the market in 2012. These seizures, worth billions of dollars, used blockchain analytics to trace funds and are examples of asset forfeiture in crypto cases.

Silk Road showed that bitcoin was pseudonymous rather than anonymous, and that public ledgers can be powerful evidence. It pushed regulators towards stronger rules for exchanges, including know your customer requirements and the classification of crypto exchanges as money transmitters, and encouraged growth in privacy coins. Darknet markets continued after its closure, many adopting Monero. The case remains a reference point in debates about online drug markets, sentencing and financial privacy.

• US Department of Justice