Strike API

What does an `invoice.updated` webhook from Strike tell you?

• The invoice's new state, so you can fulfil straight away
• Which invoice changed and which fields changed, but not the new state
• That the customer has paid

When the customer pays a dollar invoice in bitcoin, why does the quote expire so quickly?

• Lightning invoices can never last more than 30 seconds
• The quote fixes a bitcoin-to-dollar rate, so Strike keeps that window short
• Strike charges per second while the quote is open