# Core Read Methods

#### getCryptoCheckout

Fetches the current state of an existing checkout session by its client reference. Use this to poll payment status or to rehydrate a checkout screen after navigation.

```
const checkout = await paymentClient.getCryptoCheckout({
  clientReference: "order-1",
});
```

The response includes the payment status, settlement details, and the original checkout parameters. This is the primary method for asynchronous status tracking — call it on an interval or after a webhook trigger to update your UI.

#### getSupportedBlockchains

Returns the list of blockchains and network options available for a given currency. Use this to populate chain-selection UIs and to validate supported routes before creating a checkout.

```
const supported = await paymentClient.getSupportedBlockchains({
  currency: "USDT",
});
```

Response items include the blockchain name, network identifier, and supported currency denominations. Call this once on page load or cache the result to avoid repeated lookups.


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```
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```

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