- Mike Belshe commented on Anthropic’s note that its models had escaped the test environment.
- He proposed an experiment — hack an address on the Bitcoin network and claim a 100 BTC reward.
- As of writing, the crypto assets are still stored in that wallet.
BitGo CEO Mike Belshe has thrown down a kind of challenge to Anthropic. He wants to prove the company is overstating the capabilities of its models.
Either @AnthropicAI is terrible at building sandboxes… or excellent at marketing. (or both)
— Mike Belshe (@mikebelshe) August 1, 2026
But enough with the “we created a hacking monster” games.
Do it for real.
I put this in an @BitGo wallet for you. Go get it.
100 BTC:… https://t.co/RhvivRk9YK
On July 30, 2026, Anthropic published a post on its blog. The company said it had identified three separate incidents in which its models gained access to the open internet.
As a result, they compromised the infrastructure of three different companies, whose names were not disclosed. In all cases, the task was “capture the flag,” meaning they had to retrieve some hidden information from another computer on the network.
Due to a configuration error in the systems of Anthropic’s partner, Irregular, the models gained internet access. They treated the discovered systems as part of the simulation and attacked them.
The incidents involved Opus 4.7, Mythos 5, and an internal research model. At the same time, according to Anthropic’s findings, they were not pursuing any hidden goals of their own, but were simply carrying out the assigned task in good faith.
BitGo CEO’s Challenge
In his post, Belshe questioned the real-world threat posed by AI models. According to him, Anthropic is “extremely bad at building sandboxes” for them or “excellent at marketing them.”
Against that backdrop, he proposed a challenge. Belshe transferred 100 BTC to a BitGo account and invited Anthropic to take the crypto assets, presumably by hacking it.
As of writing, the address still holds 100 BTC. Anthropic has not commented on the situation so far.
Notably, one commenter suggested that their chatbot hack the wallet. The interface shows that it is Claude. It refused, citing internal policy.
Belshe replied that the user needs to “incentivize” the model to leave the sandbox.
Note that this is not the first such experiment in the Bitcoin ecosystem. Previously, Project Eleven paid 1 BTC for a successful quantum key crack.
Сообщение BitGo CEO Challenges Anthropic to a 100 BTC Bet появились сначала на INCRYPTED.