Hot wallet vs cold wallet: a hot wallet is connected to the internet, making it convenient but more vulnerable. A cold wallet is offline, safer but less convenient for daily use.
Proof of Stake is different. Instead of solving puzzles, validators lock up their coins as collateral. They're chosen to validate blocks based on how much they stake.
What is a blob? In Ethereum's upgrade roadmap, blobs are temporary data attached to blocks specifically for Layer 2 rollups. They make rollup transactions much cheaper.
Token standards like ERC-721 for NFTs ensure interoperability. Any wallet or marketplace that supports the standard can work with any token following it.
What is a blockchain timestamp? Every block records the time it was created. This creates a permanent and tamper-proof record of when each transaction occurred.
What is a blockchain fork? When developers disagree on how to update the code, the chain can split into two. Bitcoin Cash was born from a Bitcoin fork.
Aimer
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