加密小讲堂

🧨 This Spring Festival is really lively. The leader of ERC-404: Pandora’s Box has increased 5 times in 2 days and 30 times in a single week.
Then we won’t have any rest during the Spring Festival either! Pumping will now take you to understand the unique protocol of ERC-404 and the fields in which it may shine in the future.
💡 ERC-404 is a new Ethereum token standard proposed by developers with the online names "ctrl" and "Acme" in early 2023. It combines the characteristics of fungible tokens (ERC-20) and NFTs (ERC-721) to create a "semi-fungible" bundled token.

✨ Oracle: Hermes, the God of the Blockchain World
"BlockChian Oracle", translated as "oracle" in Simplified Chinese, is actually not very accurate. What the oracle does is not a literal "prophecy", but a technology that allows smart contracts to access data from the outside world of the blockchain. .

In ancient Greece, people believed that oracles were a bridge between gods and humans, through which people obtained instructions from gods and knowledge about the future.

In the blockchain field, oracles play a similar role, acting as messengers between the blockchain (closed system) and the outside world (data source).

👉🏻 You may not know that Vitalik may not post on Twitter every day, but he will post a few updates on Farcaster almost every day. What exactly is Farcaster?
Let’s talk about what Farcaster is today!
1. What is Farcaster
Farcaster is not a social platform, but a decentralized social protocol based on the Ethereum architecture. Account data is stored and managed on Optimism L2.
Farcaster itself is not a platform, nor is it a client. It is a purely decentralized protocol that supports various third-party clients, similar to the email protocol. Users can freely choose applications to interact with the Farcaster network for data.

👉🏻 For cross-chain interactions, those who often play games must be very familiar with it. We often need to use various cross-chain tools (such as cross-chain bridges) to transfer GAS from Ethereum to various L2, L3, and even transfer assets between various heterogeneous chains.
In today's Web3 ecosystem, cross-chain facilities that connect various blockchains have become indispensable.
💡 Are you curious about how cross-chain interaction is accomplished?

How to achieve cross-chain interaction?
✨ Mainstream cross-chain facilities mainly use the following technologies:
Hash locking, sidechains/relay chains, bridges and cross-chain protocols

#加密小讲堂 Vol.5

Before talking about Shared Sequencers, we first need to find out what a "sequencer" is and whether there is also a "central sequencer". The answer is yes.

💡 The role of sorter
In the L2 architecture, the sequencer processes and sorts the user's transaction tasks in the block before publishing the user's transactions to the main chain.

Currently, most mainstream second-tier platforms, such as $ARB and $OP , run their own proprietary centralized sorter solutions;

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