# Preface Cardano is still one of the latest and most advanced PoS blockchain protocols. Today, with the increasingly prominent energy problems, green and sustainable technology may be more acceptable to the public. ### Security Security is a crucial points of any capital-related transaction, and Cardano is in a unique position in this respect: * Inheriting the UTXO mode of Bitcoin, the transaction is safe and reliable. * Benefiting from native tokens, multi-asset transactions also benefit from the reliability and transparency of UTXO. * For multi-asset transactions, it is safer to verify them directly by the chain consensus mechanism. * Based on Haskell's advanced functional programming, the code is easier to be formally verified and auditable, which raises the threshold of on-chain contracts ### High Performance Performance is the key to the operation of any trading system. Cardano also has its own set of performance solutions: * PoS consensus mechanism, no additional proof of work, and the transaction time is faster. * Token is native built-in, and the smart contracts do not need to duplicate token contracts, so token transfer can be faster. * Cardano will only transfer the verification part of the transaction to the cardano contract, and the amount of calculation on each transaction chain will be less. * he smart contract is written in Haskell the same as the node, and the compiled Haskell has C language-level execution performance in data verification. * The main complex logic of Cardano can be transferred to the transaction side. * The performance of the blockchain can be further released by transferring calculations to the client or a centralized system. ### Sustainability When it comes to the trading system, upgrade, maintenance, and further development are inevitable topics. For these topics, Cardano provides some technical support: * The built-in native token ensures that the standard of the token can be sustainably updated without worrying about converting the token for future upgrades. * Cardano is still one of the latest and most advanced PoS blockchains. * Today, with the increasingly prominent energy problems, green and sustainable technology may be more acceptable to the public. * Combining UTXO and PoS for capital optimization, Cardano’s technical community has a high degree of matching between capital and financing. --- # 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://astarter.gitbook.io/astarter/technical-paper/preface.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.