# PoN Consensus Mechanism Proof of Nodes (PoN) is the foundation of X1 EcoChain's always-on infrastructure. A global network of X1Nodes strengthens block integrity, supports validator activity, actively participates in the signing process, and ensures continuous network availability — eliminating the computational overhead associated with Proof of Work while preserving robust resistance to 51% and Sybil attacks. Validation is performed exclusively by credentialed participants who have met the conditions required to achieve Node status. This permissioned architecture delivers instant finality and high throughput: blocks confirm in approximately 7.5 seconds, and the network sustains up to \~2,000 TPS. Because nodes are inexpensive to operate, gas can be priced near marginal cost — approximately $0.01 per transaction. The result is a secure, scalable consensus stack that eliminates CPU/GPU waste without compromising performance or decentralization of participation. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://x1ecochain.gitbook.io/x1-ecochain-tech-whitepaper/technical-architecture/pon-consensus-mechanism.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.