Send USDC from EWX to Hydration

Key facts you must know

• USDC uses 6 decimals.

  • 1 USDC = 1,000,000 base units.

• You will replace two fields before submitting:

  • the recipient public key (AccountId32)

  • the USDC amount (base units)

Safety tip: Do a small test first (e.g., 1–2 USDC) before sending a large amount.

Step 1 : Check your USDC balance on EWX (optional)

Open the EWX explorer and paste your EWX account address:

https://energywebx.subscan.io/account/

Step 2: Open Polkadot.js "Decode call" on EWX (transaction-enabled RPC)

Use this Polkadot.js Apps link (EWX RPC):

https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fwnp-rpc.mainnet.energywebx.com%2F#/extrinsics/decode

Step 3: Paste the pre-built hex call

In "hex-encoded call", paste this exact value:

0x1f0b04010100c91f0400010100d43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d0404010300a10f043205e5140002093d000000000000

This call is pre-built with Alice's address as the recipient for testing. You will replace it with your own recipient address in Step 5.

Verify (do not skip)

Confirm the decoded call shows:

• pallet: polkadotXcm, call: transferAssets

• dest → Parachain 2034 (Hydration)

• assets → asset path: Parachain 1000 (Asset Hub) / PalletInstance 50 / GeneralIndex 1337 (USDC)

• weightLimit: Unlimited

• the Fungible amount field is present and editable

If anything looks different, STOP and do not sign.

Step 4 : Get the recipient "hex public key" (32-byte AccountId32)

Open Polkadot.js Utilities on the same EWX RPC:

https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fwnp-rpc.mainnet.energywebx.com%2F#/utilities

Choose the destination address

• If you are sending to the same wallet account on Hydration, use your own address.

• If you are sending to a different Hydration account, use that account's address.

Convert address → hex public key

In Utilities, use the tool that converts an address to hex (often labeled "Address to Hex"):

1. Paste the destination Hydration address

2. Copy the output hex public key

It should look like:

• starts with 0x

• followed by 64 hex characters (32 bytes)

Step 5: Fill recipient + amount on the Submission tab

Go back to the Decode page and click Submission.

A) Paste the recipient public key

Find the field under beneficiary:

• AccountId32 → id: [u8;32]

Paste the recipient hex public key (from Step 4).

B) Enter the USDC amount (base units)

Find:

• Fungible: Compact

Enter the amount in base units (6 decimals):

USDC_to_send × 1,000,000 = base_units

Examples:

• 1 USDC → 1000000

• 10 USDC → 10000000

• 12.34 USDC → 12340000

Step 6: Submit the transaction

1. Click Submit Transaction

2. Approve/sign in your wallet

Step 7: Confirm on Hydration explorer

After it processes, check the recipient address on the Hydration explorer:

https://hydration.subscan.io/account/

You should see the USDC balance on Hydration.