Project Eleven launches experiment offering 1 BTC reward for cracking longest Bitcoin key

Project Eleven, a quantum computing research institute, has demonstrated the threat of quantum computing to Bitcoin’s security.
On the 16th (local time), Project Eleven used the Shor algorithm to crack the largest Bitcoin key fragment on a quantum computer.
Participants in the challenge, dubbed the "Q-Day Prize," have until April 5, 2026 to submit their decryption results.
Participation can be by individuals or teams. Project Eleven said, "More than 10 million Bitcoin addresses have published their public keys."
"While quantum computing technology is gradually developing, there have been no cases where this threat has been quantitatively verified," he said.
They explained that the experiment was conducted to find a quantum-resistant solution that could securely protect the bitcoin key.
"Just cracking the key to this cryptocurrency would be a historic achievement," he said, adding, "Only pure quantum computing must be used; classical techniques and hybrid hacking are prohibited."
He emphasized.