# NxtFi Blockchain ## What is NxtFi? NxtFi is a third-generation, private (Proof of Authority) blockchain with integrations and API-based solutions that facilitate adoption, implementation and scalability. It is designed with a special focus on traditional businesses and institutions to update their digital services with efficient, secure and transparent transactions. ## Introduction NxtFi is a decentralized system that provides a unique combination of features. It does not require proof of work. Instead, it uses a Proof of Authority consensus mechanism achieved through encryption key-pair permissions, best-in-class encryption algorithms, transparent distributed ledger technology with fast transactions and low latency, and infinite possibilities through Smart Contracts implementation within a cryptographic authority hierarchy (similar to web SSL certificates). This enables a secure and robust framework for backend and storage with no fees or transaction gas. ### Smart contract within NxtFi: NxtFi blockchain introduces a fully programmable Smart Contract structure with a powerful Javascript interpreter within, enabling blocks to have executable code written with JS logic into their body. It is also complemented with embedded functions that make data storage possible, making its architecture an easy-to-use, safe, and tamper-proof framework to host backend logic. Managed and requested through API https calls, NxtFi offers a robust ecosystem to host many types of apps. ## Documentación This documentation complements the [NxtFi Whitepaper](https://app.gitbook.com/o/0hVWyBfTsexSeVNTyRbv/s/pyIDff53JCEJyXJ823SI/) and is intended as a guide for developers who want to implement a solution connected to the NxtFi blockchain. --- # 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://docs.nxtfi.org/nxtfi-blockchain.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.