Withdraw lets you move crypto from your Numpay wallet to any address on Elysium: your own wallet, a DeFi app, or an exchange that supports Elysium.

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How to withdraw

1

Open Withdraw

Tap Withdraw on the home screen, next to Add Money.
2

Enter amount and address

Type the amount and the destination address (0x…, 42 characters).
3

Confirm

Review the amount, the shortened address and the network fee (free), then confirm.
4

Done

You get a link to the transaction on the Elysium explorer. The withdrawal appears in Activity as Withdrawn to 0x1234…abcd.

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Checks before sending

Only withdraw to an address that supports Elysium. Crypto sent to a wallet or exchange that doesn’t support Elysium may be lost, and on-chain transfers can’t be reversed.

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What happens under the hood

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Why the backend verifies on-chain

A withdrawal goes to an address with no Numpay user behind it, so there’s no second party whose history would contradict a bad record. Before saving it, the backend:
  1. Checks the caller owns the sending wallet (the token’s phone or email matches the sender’s account), otherwise 403.
  2. Fetches the transaction receipt from Elysium and requires status: success.
  3. Decodes the receipt’s logs and requires a USDC Transfer event from the sender to the destination for exactly the amount (in 6-decimal units), otherwise 400 Withdrawal not recorded: <reason>.
If recording fails after the transfer succeeded, the money has still moved; the app only logs that the history entry couldn’t be saved.

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Gas

The transfer uses the same sponsored path as any Numpay send: Pimlico’s paymaster pays the HYPE gas. The user pays nothing.