Payment confirmation

A payment confirmation is each block mined on top of the one containing a transaction, deepening the assurance that the transfer will not be reversed.

A transaction becomes safer as blocks pile on top of it, since reversing it would require rewriting those blocks. Merchants set a confirmation threshold per asset — higher for large amounts — before treating a payment as settled. Our payments layer tracks each invoice's transfer against its required confirmations using archive-node reads, then fires the HMAC-SHA256-signed settlement webhook once the threshold is met, so the merchant credits the payer at the right moment rather than too early.