# superdao 测试答案

**Published by:** [imayday.eth](https://paragraph.com/@imayday/)
**Published on:** 2022-11-30
**URL:** https://paragraph.com/@imayday/superdao

## Content

What is a blockchain? A distributed database that maintains a continuously growing list of ordered records called blocks What is a hash? A fixed number of characters produced by an algorithm and used to secure blockchain transactions What is the most accurate description of a block? A collection of transactions on a chain Which of these statements about PoS is true? Validators check transactions and add new blocks to the blockchain How does the node infrastructure work? It allows programs to use information from the blockchains faster What is the main purpose of sharding? Blockchain scalability What is the purpose of a bridge? Interoperability among blockchains Which of these is not a blockchain? Nansen What is a smart contract? A program that runs on a blockchain when predetermined terms and conditions are met Which language is native for smart contracts development on Solana? Rust Which tool allows smart contracts to monitor data from the real world? Oracle Which of these statements about Ethereum and Polygon are true? Both are EVM compatible What is a DAO? A smart contract/group of smart contracts describing organizations, their membership system, tokens, NFTs, and wallets governance What’s the idea behind the “code is law” concept? Code provides the rules for how broader society interacts in cyberspace What can you not do with an NFT? Use it as a stablecoin What is an NFT marketplace? A platform that makes it simple to trade and buy NFTs and see their ownership What is a whitelist? A list of wallets or contract addresses that will receive digital assets or tokens Which of these is a standard for collections of unique NFTs? ERC-721 Which standard combines the functions of ERC-20 and ERC-721? ERC-1155 What is minting? The process of creating a new NFT on chain What is a token? An asset built on an existing blockchain using smart contracts How much do you need to pay for a transaction, assuming that the transaction sent to Ethereum requires 21 000 gas and 1 gas costs 3 Gwei? 0,000063 ETH What is Wrapped Bitcoin (WBTC)? A token Which of these is a stablecoin? DAI Which of these is a real on-chain market indicator? Coin Days Destroyed Why is the Howey test important for crypto? It determines whether a cryptocurrency transaction qualifies as an "investment contract" and is therefore subject to U.S. securities laws, meaning it will be highly regulated Who has the keys to a non-custodial wallet? The users themselves keep both public and private keys What is the safest private key storage? Hardware wallet What is the main trade-off for having a non-custodial wallet? It is impossible to recover digital assets if a private key is compromised What problem does Gnosis Safe solve? Security of digital assets if a private key is lost What wallet address is compatible with Ethereum? 0xc098b2a3aa256d2140208c3de6543aaef5cd3a94 欢迎关注我的推：

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