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Processes for validating signatures produced by smart contract wallets, including counterfactual addresses.
Distinct from Smart Contract Standards: No candidate specifically addresses the verification of signatures from smart contract wallets for identity/payment.
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x402 is a protocol and framework that enables cryptocurrency payments for HTTP API calls, using the HTTP 402 status code to negotiate payment before granting access to resources. It supports per-request micropayments across multiple blockchain networks, with batch settlement of off-chain vouchers into a single on-chain transaction to reduce costs. The protocol also includes wallet-based signature authentication, allowing access without a payment when only identity verification is required. The framework distinguishes itself with a service discovery registry where paid endpoints are listed wit
Validates signatures from deployed and counterfactual smart contract wallets for identity and payment authorization.