What is a quantum chain? What are the quantum chain transactions?

Quantum Chain (Qtum) is an open source decentralized smart contract platform and value transmission protocol.

The following is its related introduction:

• Technical Features: Committed to creating the first BIP-compatible POS smart contract platform, integrating the advantages of Bitcoin trading model and Ethereum virtual machine. Through "decentralized applications" and "main control contracts", off-chain factors are introduced to build a blockchain master control contract that conforms to real-world business logic. At the same time, the flexibility of the consensus mechanism in public and alliance chains has been enhanced, and industry compliance has been taken into account.
• Design principles: introduce a newly designed master contract, and execute the contract through the common input of off-chain data and on-chain data as trigger conditions; achieve compatibility between blockchain technology; flexible consensus mechanism for public chains; increase considerations for industry compliance, and provide optional identity identification modules; use off-chain data as trigger conditions for master contracts to achieve interaction with the real world.
• Team and Development: Leaded by an experienced international team, Shuai Chu serves as the leader. The Quantum Chain Foundation allocates 80% of its quantum coins to the community for commercial applications and marketing, and the remaining 20% ​​is rewarded to the founding team, early investors, consultants and development teams.

Here are some exchanges that can trade quantum chains:

• Binance : As one of the world's largest cryptocurrency exchanges, Binance has a huge trading volume and rich currency, supports quantum chain trading, enjoys a high global popularity, and the platform's security and compliance are also excellent.
• Sesame Open Door (Gate.io) : This is a large cryptocurrency exchange that provides a variety of digital currency trading services, including quantum chain trading. It has a high influence in the cryptocurrency field, with good trading depth and liquidity.
• OKX : A cryptocurrency exchange operated by Hong Kong's OK Group, with its comprehensive strength among the world. The transaction volume is large, the currency transaction depth is excellent, the platform operates in compliance, and the security measures are perfect.
• Bithumb Exchange : A virtual currency exchange operating in Japan, established in 2016, provides 24-hour uninterrupted trading services and supports the transaction of a variety of mainstream virtual currencies, including quantum chains. Its security and reliability are widely recognized.
• Matcha Exchange : This is a well-known cryptocurrency exchange that provides a variety of digital currency trading pairs, has a friendly trading interface, convenient operation, supports quantum chain trading, and has a certain user base in the market.