> ## Documentation Index
> Fetch the complete documentation index at: https://developers.circle.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Transfer USDC on testnet between Noble and Ethereum using CCTP V1

> Explore this tutorial for transferring USDC on testnet between Noble via CCTP V1 and Ethereum

<Warning>
  **This is CCTP V1 (Legacy) version. For the latest version, see [CCTP](/cctp)**.
</Warning>

To transfer USDC between Noble testnet and Ethereum Sepolia, follow the
tutorials provided
[on GitHub](https://github.com/circlefin/noble-cctp/tree/master/examples).
Specifically, follow the instructions for the
[DepositForBurn script](https://github.com/circlefin/noble-cctp/blob/master/examples/depositForBurn.ts)
to test transferring USDC from Noble testnet to Ethereum Sepolia, and the
instructions for the
[ReceiveMessage script](https://github.com/circlefin/noble-cctp/blob/master/examples/receiveMessage.ts)
to transfer USDC from Ethereum Sepolia to Noble testnet.

As a security measure, these scripts should only be used for testnet testing. It
is not recommended to reuse private keys across mainnet and testnet.

<Note>
  **Note:**

  This tutorial relies on the Strangelove Ventures
  [Noble CCTP V1 relayer](https://github.com/strangelove-ventures/noble-cctp-relayer),
  which is a service that automatically calls `receiveMessage()` for messages
  transmitted to and from Noble domains. To avoid relying on this relayer, you can
  submit this `receiveMessage()` transaction directly. (If you do not want your
  transaction relayed automatically, you can specify a `destinationCaller` via
  `depositForBurnWithCaller()`.)
</Note>