> For the complete documentation index, see [llms.txt](https://docs.kaisar.io/kaisar-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kaisar.io/kaisar-network/kaisar-architecture/products/kaisar-onenode/kaisar-checker/what-is-the-kaisar-checker-node/referral-mechanism.md).

# Referral Mechanism

**10%** commission fee is reserved for all referrers. Participants in the Node Sale will receive a referral code. When friends join the Node Sale using your code, you will earn 10% of their contribution amount.

**For referral purchasers:**

Round 1: 20% discount

Round 2: 5% discount