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x402 is an open, HTTP-native payment protocol designed to enable programmatic, real-time payments directly within standard web requests. It repurposes the long-unused HTTP 402 “Payment Required” status code to allow servers to request payment before delivering content or API responses. The protocol supports multiple payment networks, including blockchain-based systems and fiat-compatible facilitators, making it flexible and network-agnostic. It is particularly suited for machine-to-machine...

Kohaku is an open-source initiative by the Ethereum Foundation aimed at bringing privacy-by-default tooling into the Ethereum ecosystem. It comprises an SDK of privacy primitives, a reference wallet implementation (browser extension), and a collaboration platform for existing wallet teams to adopt composable privacy building blocks. The project recognizes that privacy leaks in Ethereum go beyond just on-chain visibility — they include RPC endpoints exposing IPs, address reuse across dApps,...

...Check your transaction recipient against 50M+ labeled Ethereum accounts to be sure you're sending to the right place. A fan favorite since 2018, the MyCrypto Desktop App continues to provide an additional layer of security for your Ethereum assets. On systems where a pre-built version of node-hid is not available (e.g. 32-bit versions of Windows and Linux), you additionally need Python (3+) and node-gyp installed.