> For the complete documentation index, see [llms.txt](https://docs-old.zus.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-old.zus.network/products/chalk/create-nft-collection/buy-zcn-for-nft-via-erc-token.md).

# Buy ZCN for NFT via ERC token

1. Select **Buy with ERC token** as a mode of payment for buying allocation for storing NFT and click **Continue**.

<figure><img src="/files/nIfaX7mKmCUi5kaChWgP" alt=""><figcaption></figcaption></figure>

2. Next, carefully review and confirm the desired storage amount for your purchase.&#x20;

<figure><img src="/files/4OY52vnohhbCrDaoKOS8" alt=""><figcaption></figcaption></figure>

3. Then, click "Buy."

<figure><img src="/files/ZBPlqXCZHBfVD2m42Z7Y" alt=""><figcaption></figcaption></figure>

4. Subsequently, click "Connect to MetaMask."

<figure><img src="/files/lbOxwuvD2xFsWFMBrxN2" alt=""><figcaption></figcaption></figure>

**Note:** Please ensure that you have MetaMask installed as a browser extension and are signed in with your wallet before proceeding.

5. Chalk will retrieve the network fees and total cost in ETH to buy ZCN. Proceed **Next** to Continue.

<figure><img src="/files/FfWR9bc7e0c0dfmgSm7K" alt=""><figcaption></figcaption></figure>

6. Now, provide your Metamask/Ethereum wallet address for making payment then proceed by clicking "Next".&#x20;

<figure><img src="/files/LSQR6c3ca7vGc65l3gaS" alt=""><figcaption></figcaption></figure>

7. The process of buying ZCN comprises of four distinct stages.

<figure><img src="/files/yb2mzWnbqnbwYmIVwICD" alt=""><figcaption></figcaption></figure>

* Swap: Exchanging ETH tokens for ZCN-ERC.
* Increase Allowance: A higher allowance or gas limit typically signifies that the transaction will require more processing and prioritization.
* Burn: Burning a specific amount of the currency with each trade.
* Mint: Creating new units of the currency to replace those that were burned.

&#x20;**Note:** Please be aware that Chalk will establish a connection with MetaMask and seek confirmation for MetaMask transactions.