> For the complete documentation index, see [llms.txt](https://docs.gpt360.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gpt360.io/sigma3-launchpad/refund-policy-and-investor-protection/withdrawn-or-invalid-agreements.md).

# Withdrawn or Invalid Agreements

If any key partner (e.g., an exchange or marketing provider) withdraws participation, or if submitted documents or wallet addresses lose legal validity or authenticity, the system initiates a refund.\
This ensures that the project cannot proceed without verified commitments from third-party participants.

**Key elements:**

* Automatic verification of all whitelisted agreements.
* Validation through hashes of signed documents.
* Immediate refund if a contract or agreement is deemed invalid.