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README.md: add mini FAQ 

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Leo 2021-06-04 14:42:50 +02:00
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@ -27,6 +27,22 @@ printer on fire or startle your cat.
Cryptocurrencies in general are a high-risk investment, there's decent chance you'll lose your money, and you most Cryptocurrencies in general are a high-risk investment, there's decent chance you'll lose your money, and you most
certainly shouldn't put your life savings into a Wormhole contract (or any other). certainly shouldn't put your life savings into a Wormhole contract (or any other).
### READ FIRST BEFORE USING WORMHOLE
- Much of the Solana ecosystem uses wrapped assets issued by a centralized bridge operated by FTX (the "Sollet bridge").
Markets on Serum or Raydium are using those centralized assets rather than Wormhole wrapped assets. These have names
like "Wrapped BTC" or "Wrapped ETH". Wormhole is going to replace the FTX bridge eventually, but this will take some
time - meanwhile, **Wormhole wrapped assets aren't terribly useful yet since there're no market for them.**
- Other tokens on Solana like USDC and USDT are **centralized native tokens issued on multiple chains**. If you transfer
USDT from Ethereum to Solana, you will get "Wormhole Wrapped USDT" (wwUSDT), rather than native USDT.
- **Solana's SPL tokens have no on-chain metadata**. Wormhole can't know the name of the token when you
transfer assets to Ethereum. All tokens are therefore named "WWT" plus the address of the SPL token.
The reverse is also true - Wormhole knows the name of the ERC20 token, but there's no way to store it on Solana.
There's an [off-chain name registry](https://github.com/solana-labs/token-list) that some block explorers use, but
if you transfer an uncommon token to Solana, it may not show with a name on block explorers.
### Repo overview ### Repo overview
- **[bridge/](bridge/)** — The guardian node which connects to both chains, observes lockups and submits VAAs. - **[bridge/](bridge/)** — The guardian node which connects to both chains, observes lockups and submits VAAs.