Ireland's Criminal Assets Bureau, working with Europol's European Cybercrime Centre, announced in March 2026 that it had recovered and seized a cryptocurrency wallet containing 500 Bitcoin connected to convicted Irish drug trafficker Clifton Collins — assets that had been considered effectively unreachable for years. Collins had purchased approximately 6,000 Bitcoin between 2011 and 2012 using drug trafficking proceeds, splitting his holdings across 12 wallets of roughly 500 BTC each. He reportedly stored the access credentials on a sheet of paper hidden inside the aluminum cap of a fishing rod case at a rental property. Following his arrest in 2017, the property was cleared and the paper was never found, leading to the widespread assumption that the Bitcoin was permanently inaccessible. That assumption held until blockchain intelligence platforms detected the transfer of 500 BTC from a wallet labeled "Clifton Collins: Lost Keys" to Coinbase Prime — after more than a decade of complete inactivity — confirming that someone had successfully regained access.

The CAB's official statement confirms the seizure but notably does not explain how access was obtained, makes no claim that Bitcoin's cryptography was broken, and does not mention any brute-force attack on the wallet. Europol's contribution is described as technical expertise, analytical support, and access to "advanced decryption resources" — language that is deliberately vague. The most credible explanations consistent with the available evidence involve investigative recovery rather than cryptographic defeat: Collins may have made additional copies of his credentials that investigators located through forensic work, Europol's resources may have enabled reconstruction of data from older storage media, or overlooked evidence from the original investigation may have provided a path to access. What all plausible explanations share is that none of them require breaking Bitcoin's underlying cryptography — the vulnerability was in how Collins managed and stored his keys, not in Bitcoin itself.