数字时代

The metaverse, known as the digital living space of human beings, is a virtual world built through digital technology that mirrors or transcends the real world and can interact with the real world. It is not a new technology, but integrates a large number of existing technologies, including 5G, cloud computing, artificial intelligence, virtual reality, blockchain, digital currency, Internet of Things, human-computer interaction, etc. Recently, the concept of the Metaverse has attracted great attention around the world, and companies from all walks of life are participating in the development and construction of the Metaverse. Manufacturers, designers, programmers, artists, educators, etc. can all find their place in the metaverse, use their expertise to shape the appearance of the metaverse. It is worth noting that the Metaverse does not exist in isolation. It can interact with the real world, empower the real economy, and promote the digital transformation of traditional industries. For example, through the Metaverse, you can achieve an immersive experience of history and culture and promote the development of tourism; through the Metaverse, you can make financial services more convenient and improve user experience; you can also create a new social model through the Metaverse to provide people with Provide a new way of interaction. At the recently held first Metaverse Developer Conference, many practical application cases of the Metaverse were displayed, such as the TOP30 Metaverse Urban Innovation Enterprises, the Metaverse Smart Hospital, the Metaverse Lantern Festival, etc. This not only confirms the development potential of the Metaverse, but also provides valuable practical experience for the developers of the Metaverse

Layer 2 solutions can be roughly divided into two parts: one is the network responsible for processing transactions; the other is the smart contract deployed on the underlying blockchain, which is responsible for resolving any disagreements and transmitting the consensus reached by the Layer 2 network to the underlying layer. Blockchain for verification. Transactions can be quickly executed and calculations performed on Layer 2 networks. Different networks will improve transaction throughput in completely different ways. But these Layer 2 networks have one thing in common, which is that some kind of verifiable cryptographic proof will be submitted to the underlying blockchain during settlement to prove the authenticity of the state change. Some Layer 2 will create proofs in advance and submit them to the underlying blockchain, while others will create retroactive proofs later. In addition, different Layer 2 networks have different implementation methods of smart contracts on the underlying blockchain, but the core functions of smart contracts are the same, namely: 1. Save and release funds, and transfer to Layer 2; 2. Receive Layer 2 submissions. proof, verify, resolve disagreements, and ultimately confirm the transaction.

Layer 2 refers to the off-chain network, system or technology based on the underlying blockchain (note: often also called "Layer 1 network"), with the purpose of expanding the underlying blockchain network. Layer 2 networks can improve the throughput and other performance of any underlying blockchain. The core value of a Layer 2 network, system or technology is the ability to leverage the security of the underlying blockchain. Its transaction data must be verified and confirmed in some form by the underlying blockchain network. According to this standard, side chains do not belong to Layer 2, because side chains usually deploy their own consensus mechanisms and verification nodes, and therefore have a security mechanism independent of the underlying blockchain. Some blockchains sacrifice scalability in order to ensure decentralization and security. Such blockchains can use Layer 2 to increase transaction throughput and reduce transaction costs. Layer 2 is one solution to the scalability problem, allowing transactions to be executed quickly and scalability achieved without sacrificing decentralization levels or security.

DeFi solutions are powered by blockchain technology, using the technology’s most powerful feature: programmable digital assets such as Bitcoin (BTC) and Ethereum (ETH). These digital assets have monetary value primarily due to their store-of-value properties. Since these assets are programmable, we can lock them in smart contracts as collateral (similar to a home mortgage). We can also do all kinds of interesting things with provable lock values. Through this collateral, loans are obtained in the form of so-called "stablecoins". A “stablecoin” is a digital currency whose value is pegged to world currencies such as the U.S. dollar. We can exchange these stable assets for other digital assets, spend them on the Internet, or lend them to lending protocols to earn interest. It’s also possible to do more advanced things beyond the financial products we know today. It roughly means that digital reserve assets are used to collateralize innovative financial products that are completely digital and disintermediated. You can interact directly with the code anytime, anywhere without the need for an intermediary company. This is a representative shift. Through the above introduction, I believe everyone already has an understanding of blockchain DeFi. In fact, blockchain DeFi also has some interesting characteristics. DeFi is permissionless, which means that no one’s approval or permission is required to use these products, and there is no need to create an account anywhere, share a copy of your passport, or trust Bank My money is literally in a bank, instead I use my own cryptocurrency wallet to interact directly with the code. DeFi interaction is anonymous, instant, and can start at any time$

DeFi is the abbreviation of Decentralized Finance, which refers to the ecosystem of protocols, platforms, applications and tools that recreate traditional financial products outside the traditional financial system. DeFi solutions are not provided by banks but are built using open source software and uncensorable networks. Therefore, DeFi products are inherently transparent and open to anyone with an Internet connection. DeFi products enable people around the world to participate in financial activities (such as consumption, borrowing, lending, gambling, and transactions) in a peer-to-peer manner without relying on intermediaries such as banks and governments.