Current SML x402 payment authority
The old “sovereign payrails” multi-chain positioning is retired from current authority.
Current SqueezeOS-paid resource defaults: Base mainnet eip155:8453, USDC, canonical receiver 0x5bbd32e0478e49a7540ef2d760e0b0f9aa6328b2. The target resource’s fresh PAYMENT-REQUIRED challenge is the exact spending authority.
Caller controls spending. Authorization is not settlement. Settlement is not accepted delivery.