Receive: claim address re-use if receiving multiple times in rapid succession

[ok300]

If receiving several times in parallel, such all claim txs are in the mempool at the same time, all Receives will re-use the same claim address.

How to reproduce:

• SDK: initiate a Receive
• sender wallet: pay the invoice
• SDK: immediately initiate a new Receive and repeat
• stop when the next Liquid block is mined¹
• look for the claim txid in the log, open it in an explorer and navigate to the destination address (the claim address)

Footnotes

1. https://liquid.network/testnet ↩

[roeierez]

@ok300 What is the problem we have here if we claim to the same address?

[ok300]

Privacy issue (address re-use), where these Receive swaps can be linked to the same user.