<p>It is possible that intermediate nodes on the route between you and the payee may track previous payments they have forwarded. If this happens, then the first time the <code>payment_preimage</code> for a <code>payment_hash</code> is revealed, any node along the route could remember it, and if they see the same <code>payment_hash</code> used again in another payment, they would be able to respond with the corresponding <code>payment_preimage</code> before forwarding the payment along the route, and this would allow them to claim the funds which are being spent without the intended recipient ever receiving them.</p>

CC BY-SA 4.0
2019-03-19T00:40:48.787Z
Thank you for the quick reply. Is there a possibility, that my phone can get infected when this happens? Does my wallet (BLW) share more data than usual when this happens? In general, what harm can be expected?
noobandconsumer
CC BY-SA 4.0
2019-03-19T00:09:01.390Z
2019-03-19T00:09:01.390Z
Mark H
<p>Until today I thought, that lightning invoices can only be paid once. Where do the funds go when an invoice is paid more than once? Will every payment reach the destination node or can reusage be detected and nodes within the route can keep the funds?
Edit: The same invoice is paid with different wallets and the users get confirmation.</p>

<lightning-network><network>
What happens when invoices get paid more than once?
noobandconsumer
# What happens when invoices get paid more than once?

(Asked by: username_0 on 2019-03-18)

Until today I thought, that lightning invoices can only be paid once. Where do the funds go when an invoice is paid more than once? Will every payment reach the destination node or can reusage be detected and nodes within the route can keep the funds?
Edit: The same invoice is paid with different wallets and the users get confirmation.

**Tags:** lightning-network, network


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## 1 answers

### Answer by username_1 on 2019-03-19. Score: 2

It is possible that intermediate nodes on the route between you and the payee may track previous payments they have forwarded. If this happens, then the first time the `payment_preimage` for a `payment_hash` is revealed, any node along the route could remember it, and if they see the same `payment_hash` used again in another payment, they would be able to respond with the corresponding `payment_preimage` before forwarding the payment along the route, and this would allow them to claim the funds which are being spent without the intended recipient ever receiving them.

> **Comments:**
> **username_0**: Thank you for the quick reply. Is there a possibility, that my phone can get infected when this happens? Does my wallet (BLW) share more data than usual when this happens? In general, what harm can be expected?  

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