> For the complete documentation index, see [llms.txt](https://docs.on.nexus/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.on.nexus/frequently-asked-questions-faq/1.-basics-and-guide.md).

# 1. Basics & Guide

**Q: Are my funds safe on Nexus? Can the platform misappropriate my assets?**

**A:** Absolutely safe. DotSwap Nexus is built on a strictly **non-custodial** architecture. Your assets always remain in your own Web3 wallet. The platform never touches, holds, or has the ability to misappropriate your funds. We utilize native Bitcoin technology (such as PSBT) for matching and settlement, eliminating the counterparty risks of centralized exchanges (CEXs) and the smart contract vulnerability risks found on other blockchains.

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**Q: What is the difference between Nexus and a centralized exchange ?**

**A:** The biggest difference is **control**. On centralized exchanges, you must deposit your crypto into their accounts. On Nexus, no deposits are required. You simply connect your own Bitcoin wallet and trade directly. You are the sole owner of your assets. Additionally, Nexus focuses specifically on the Bitcoin native ecosystem (such as Runes and Ordinals), providing a direct Layer 1 on-chain settlement experience.

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**Q: What is the "Fast Execution Account" (FEA) I keep seeing? Do I need to understand it as a beginner?**

**A:** The "Fast Execution Account" (FEA) is an advanced feature designed primarily for professional market makers and arbitrageurs to provide faster and more cost-effective off-chain matching. As a beginner retail user, you can simply connect your wallet and trade directly on-chain. **You do not need to understand or use FEA immediately.** You can explore it later when your trading strategies require faster execution speeds and fee optimizations.