.........is a cryptocurrency that works on permissionless distributed ledger and can be mined while ............ is centralized and permission required to become a node.

Question

BlackTom AI · Accepted Answer

Bitcoin is permissionless and mined: it uses a proof-of-work (PoW) consensus where anyone can run a full node and participate in mining to create new blocks and earn BTC. Permissionless means no central authority must approve participation; the network is open, decentralized, and miners compete using computational work to validate transactions and secure the ledger.

Ripple (XRP) is centralized and permissioned: XRP tokens were pre-mined (created at inception) and the Ripple network relies on a consensus protocol using a set of validators. Many validators are operated or endorsed by Ripple Labs, and becoming an authoritative validator typically requires permission or trust relationships. Because the supply is pre-issued and block creation is not performed by open mining, Ripple is characterized as more centralized and permissioned than Bitcoin.

Step-by-step reasoning:
1. Define permissionless vs permissioned: permissionless — any participant can run a node/miner; permissioned — node/validator participation is restricted or governed by a central authority.
2. Check Bitcoin: open participation, PoW mining, new issuance via miners — fits “permissionless” and “can be mined.”
3. Check Ripple: XRP pre-mined, consensus via designated validators, Ripple Labs exerts control — fits “centralized” and “permission required to become a node/validator.”
4. Match the fill-in-the-blanks: first blank = Bitcoin; second blank = Ripple.

Why other choices are incorrect (brief):
- Ripple, Bitcoin: reverses roles; Ripple is not the permissionless, minable currency.
- Ethereum, Bitcoin: Ethereum (historically permissionless and minable pre-Merge) does not make Bitcoin centralized; order wrong.
- Ripple, Ethereum: Ripple is not permissionless/mined; Ethereum is not the centralized permissioned system described.
- Bitcoin, Ethereum: Ethereum (especially post-Merge) is not a centralized, permission-required node system.

Therefore the correct answer is Bitcoin, Ripple, which matches the provided answer.

.........is a cryptocurrency that works on permissionless distributed ledger and can be mined while ............ is centralized and permission required to become a node.单项选择题

类似问题

What is Blockchain and how is it relevant to supply chain management?

What is the main advantage of using blockchain for cross-border payments?

What is DeFi?

Which platform is known for enabling developers to build decentralized applications (dApps) and smart contracts?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单