Woofun AI reports that Thariq Shihipar of the Claude Code team confirmed the existence of hidden code mechanisms within Claude Code for Chinese users. Shihipar described the feature as an "experimental" measure introduced in March 2026 to curb unauthorized account reselling and mitigate model distillation attacks.

The team stated that stronger safeguards have been implemented and the experiment was originally slated for removal. Related pull requests have been merged, ensuring a complete rollback of the mechanism in the new version scheduled for release on July 2, 2026.