LUNA Coin and Qtum Coin are two different cryptocurrencies, and the two are called "the two major public chains with potential". LUNA Coin It was once an important cryptocurrency in the Terra ecosystem. Terra is an algorithmic stablecoin platform, in which LUNA coins are mainly used to maintain the stability of the stablecoin UST and participate in network governance. However, in May 2022, the Terra ecosystem encountered a serious crisis, and the price of LUNA coin plummeted and almost returned to zero, causing the entire ecosystem to collapse and brought a huge impact to the cryptocurrency market. Qtum Coin Qtum is an open source blockchain platform designed to combine the security of Bitcoin with Ethereum's smart contract capabilities. Qtum Coin is a native cryptocurrency of the Qtum platform, used to pay transaction fees, participate in the Proof of Stake (PoS) consensus mechanism to verify transactions and create new blocks, etc. Qtum has made certain explorations and development in blockchain technology application development and other aspects, and has a certain popularity and technical characteristics in the field of cryptocurrency. Although they are all related to blockchain technology, the Terra ecosystem to which LUNA coins belongs has suffered major setbacks. However, the launch of LUNA2.0 has injected new vitality, with new definitions and new development directions. Qtum is a relatively independent blockchain project. There are great differences in nature, functions and development history of the two. Both are called "the two major public chains with potential." Public chains usually refer to blockchain platforms that have a complete blockchain network and ecosystem that can operate independently and provide underlying support for various applications, such as Ethereum, Bitcoin network, etc. Qtum can be regarded as one of the husband chains, but the ecosystem in which LUNA2.0 is located is different from the traditional public chain concept, injecting new vitality and new development directions.