P2PKH Payments for HTTP 402
Software that wants to pay ten cents for an API call, like a script, a CI job, or an automated agent, usually doesn't have and doesn't want a full crypto wallet setup with identity keys and special serialization formats. Before this, a BSV payment for a paywalled web request required adopting that whole wallet ecosystem just to send a small amount of money, so the payment often simply didn't happen. This makes it possible for anything that can sign a basic transaction to pay for an HTTP request and have that payment checked by anyone, not just the seller.
2026