> For the complete documentation index, see [llms.txt](https://docs.zkdx.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zkdx.io/guide/inviting-friends-to-zkdx-a-guide-to-transferring-usdeszkdx.md).

# Inviting Friends to zkDX: A Guide to Transferring $esZKDX

**Establishing a Referral Relationship:**

* The inviter transfers 1,000 $esZKDX to the invitee's address, creating a referral link.

**How to Acquire $esZKDX:**

1. **Stay Engaged with zkDX**: Follow zkDX and participate in activities like zealy sprint or other reward events.
2. **Purchase on iZUMi**: Buy $esZKDX on [**iZUMi**](https://izumi.finance/trade/swap?tokenFrom=0x3355df6d4c9c3035724fd0e3914de96a5a83aaf4\&tokenTo=0xe9d81b108cf6062607bcd888c745fb67e9d5efcd\&chainId=324), which operates on the zkSync Era network. After switching networks, search for the esZKDX contract and enter the amount to purchase.
3. **Stake to earn:** [**Guide**](/guide/zkdx-staking-guide.md)

**Making a Valid Invitation:**

* After obtaining $esZKDX, transfer 1,000 $esZKDX to another individual's wallet address to count as a valid invitation. Only transfers of this exact amount will be recognized as valid invitations during the snapshot.

**Upgrades $esZKDX to Omnichain Fungible Token (OFT):**

* [Upgrade your $esZKDX to OFT $esZKDX](/guide/how-to-upgrade-usdeszkdx-to-omnichain-fungible-token-oft.md), allowing seamless transfers across various L2 networks like Linea, Base, and zkSync.
* Transferring 1,000 $esZKDX post-upgrade to someone's wallet address on these networks also counts as a valid invitation.

This guide helps you navigate the process of acquiring and using $esZKDX for inviting friends to the zkDX community, leveraging the latest technological advancements for seamless transactions.


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