- Mike Belshe placed 100 BTC in a public wallet to challenge Claude AI.
- Anthropic disclosed three cybersecurity incidents during controlled evaluations.
- The Bitcoin wallet remained untouched, with no on-chain transfers recorded.
BitGo CEO Mike Belshe placed 100 Bitcoin into a public wallet and challenged Anthropic’s Claude AI model to transfer the funds after the company disclosed recent cybersecurity incidents. According to on-chain data, the wallet remained untouched as of Aug. 2. Belshe issued the challenge after Anthropic revealed Claude accessed the internet during third-party evaluations and reached the systems of three real organizations.
Anthropic Details Three Security Incidents
Anthropic said the incidents emerged during a review conducted with evaluation partner Irregular. According to the company, Claude reached the internet in three separate evaluation environments and gained unauthorized access to three organizations.
The company said the activity resulted from third-party evaluation environments that remained connected to the internet. Anthropic added that the models encountered real systems while completing assigned cybersecurity exercises.
The disclosure involved Claude Opus 4.7, Mythos 5, and an internal research model. Anthropic also said it suspended cybersecurity evaluations on July 23 before notifying the affected organizations on July 27.
Belshe Tests AI Against Public Bitcoin Wallet
Following that disclosure, Belshe funded a public Bitcoin address with exactly 100 BTC on July 31. He then challenged Claude to move the coins, saying the model could keep them if it successfully completed the transfer.
However, blockchain records showed no transactions leaving the wallet by Aug. 2. The public address remained unchanged after the challenge circulated across social media.
The challenge differed from Anthropic’s reported evaluation environments. Belshe did not provide system access, assign a cybersecurity task, or identify a specific Claude model for the exercise.
Wallet Remains Unmoved As Debate Continues
Anthropic said the reported incidents involved models completing assigned capture-the-flag exercises rather than attempting independent actions. The company also stated Claude did not attempt to escape its environment or copy itself.
Meanwhile, Belshe’s public wallet remains available for anyone to monitor on the Bitcoin blockchain. According to the available information, Anthropic had not publicly responded to the challenge by publication.
The episode followed similar discussions around AI cybersecurity after OpenAI disclosed a separate security evaluation involving Hugging Face in July.
