Qtum Blockchain (referred to as "Quantum Chain" or "Qtum" for short) is committed to developing the third blockchain ecosystem besides Bitcoin and Ethereum. It realizes point-to-point value transfer through the "Value Transfer Protocol", and according to this protocol, Build a decentralized application development platform ("DApp Platform") that supports multiple industries, including finance, IoT, supply chain, social media, gaming, etc. By combining the improved version of Bitcoin Core infrastructure and the mutually compatible version of Ethereum virtual machine, the quantum chain has both the indestructible blockchain network of Bitcoin and the unlimited possibilities of smart contracts. QTUM coins are used for accessing Dapp, token voting, community autonomy, and application function consumption/payment.1、 AAL account Abstraction layerThe Account Abstraction layer (AAL) is the key for Qtum to connect the UTXO circulation layer and the smart contract platform layer, and is also a major innovation in the implementation of the quantum chain. Through AAL, you can convert the UTXO model into an account model that can be executed by different virtual machines, such as Ethereum EVM or x86 virtual machines, and you can convert the account balance of the virtual machine into UTXO through AAL.This achieves a layered design of balance and smart contract platforms, with liquidity using UTXO of Bitcoin and native support for multi-signature algorithms, making balance accounting and transfer more secure; As the smart contract platform is Turing complete, it is difficult to avoid programming bugs, and separating the circulation layer from the smart contract platform has more advantages than Ethereum. In order to further expand the capabilities of the blockchain's smart contract platform, Qtum plans to implement an x86 high-performance virtual machine that can directly program smart contracts through languages such as C, C++, rust, go, and can also support other programming languages that can run on the x86 architecture. The x86 architecture virtual machine can solve some problems in Ethereum EVM, such as not supporting the Standard library, the generated bytecode is too large, does not support floating point, and is difficult to debug.2、 DGP GovernanceThe full name of DGP is Distributed Governance Protocol. The key is to utilize the deterministic results and open rules of smart contracts to solidify the governance framework and rules into the contract, so that decisions can be made democratically when needed and blockchain state management can be automated.3、 Qtum x86 Virtual MachineIntel's x86 CPU architecture is the main CPU platform for servers and desktop computers. The Qtum team is developing virtual machines using x86 Machine code. A 'virtual machine' is an independent software execution environment that can run on many different hardware platforms (Mac, PC, server, cloud based virtual private server, etc.). Currently, Qtums use EVM virtual machines and solidity.Ethereum's Solidity language is the first smart contract development language. As a new language, Solidity has some issues. Through the x86 virtual machine platform, developers can use familiar and mainstream languages such as C, C++, Rust, and Python to develop smart contracts.4、 Project characteristicsThe main characteristics of quantum chains are as follows:1. From a technical perspective, Qtum is committed to implementing the first POS smart contract platform compatible with BIP (based on UTXO model), Bitcoin transaction mode and Ethereum virtual machine advantages;2. Quantum chain introduces off chain factors through "decentralized applications" and "master contracts", forming blockchain master contracts that conform to the business logic of the real world, supporting multiple industries and channels, and ultimately achieving a mobile strategy;3. Strengthen the flexibility of consensus mechanisms in public and alliance chains, while considering industry compliance.Related links:https://qtum.org/zh/about/faqhttps://baike.baidu.com/item/%E9%87%8F%E5%AD%90%E9%93%BE/22415320?fr=aladdin*The above content is organized by non official accounts. If reprinted, please indicate the source.