# MultiversX Help Center

> How can we help?

## Blockchain Basics

- [What is an NFT?](https://help.multiversx.com/en/articles/6976612-what-is-an-nft.md): Definition of NFT
- [What is a DEX?](https://help.multiversx.com/en/articles/6976731-what-is-a-dex.md): Definition of DEX
- [What is DeFi?](https://help.multiversx.com/en/articles/6976705-what-is-defi.md): Definition of DeFi
- [What is a smart contract?](https://help.multiversx.com/en/articles/6976685-what-is-a-smart-contract.md): Definition of smart contracts
- [What is APR?](https://help.multiversx.com/en/articles/6976672-what-is-apr.md): Definition of APR
- [What is a CEX?](https://help.multiversx.com/en/articles/6976725-what-is-a-cex.md): Definition of CEX
- [What is a Secret Phrase?](https://help.multiversx.com/en/articles/6976593-what-is-a-secret-phrase.md): Definition of the secret phrase
- [What is fiat?](https://help.multiversx.com/en/articles/6976541-what-is-fiat.md): Definition of FIAT
- [What is a stable coin?](https://help.multiversx.com/en/articles/6976568-what-is-a-stable-coin.md): Definition of a stable coin
- [What is a validator?](https://help.multiversx.com/en/articles/6976783-what-is-a-validator.md): Definition of validator
- [How to recover tokens sent to the wrong address?](https://help.multiversx.com/en/articles/6976809-how-to-recover-tokens-sent-to-the-wrong-address.md): Tokens sent to the wrong address
- [What is an NFT marketplace?](https://help.multiversx.com/en/articles/6976803-what-is-an-nft-marketplace.md): Definition of the NFT marketplace
- [What is minting?](https://help.multiversx.com/en/articles/6976799-what-is-minting.md): Definition of minting
- [What is a wallet address?](https://help.multiversx.com/en/articles/6976797-what-is-a-wallet-address.md): Definition of a wallet address
- [What is a non-custodial wallet?](https://help.multiversx.com/en/articles/6976793-what-is-a-non-custodial-wallet.md): Definition of non-custodial wallet
- [What is a custodial wallet?](https://help.multiversx.com/en/articles/6976790-what-is-a-custodial-wallet.md): Definition of custodial wallet
- [What is an AMM?](https://help.multiversx.com/en/articles/6976736-what-is-an-amm.md): Definition of AMM
- [What is staking and how does it work?](https://help.multiversx.com/en/articles/6976780-what-is-staking-and-how-does-it-work.md): Definition of staking and how it works
- [What are PoW and PoS?](https://help.multiversx.com/en/articles/6976775-what-are-pow-and-pos.md): Definition of PoW and PoS
- [What is a DAO?](https://help.multiversx.com/en/articles/6976771-what-is-a-dao.md): Definition of DAO
- [What is a blockchain?](https://help.multiversx.com/en/articles/6976376-what-is-a-blockchain.md): Definition of a blockchain
- [What is a token?](https://help.multiversx.com/en/articles/6976384-what-is-a-token.md): Definition of a token
- [What is a dApp?](https://help.multiversx.com/en/articles/6976743-what-is-a-dapp.md): Definition of dApp
- [What is an SFT?](https://help.multiversx.com/en/articles/6976621-what-is-an-sft.md): Definition of SFT
- [What is APY?](https://help.multiversx.com/en/articles/6976656-what-is-apy.md): Definition of APY
- [What is a transaction?](https://help.multiversx.com/en/articles/6976505-what-is-a-transaction.md): Definition of the transaction
- [What is a blockchain explorer?](https://help.multiversx.com/en/articles/6976525-what-is-a-blockchain-explorer.md): Definition of the explorer
- [What are gas fees?](https://help.multiversx.com/en/articles/6976502-what-are-gas-fees.md): Definition of gas

## MultiversX Basics

- [What is the minimum legacy delegation amount?](https://help.multiversx.com/en/articles/6976517-what-is-the-minimum-legacy-delegation-amount.md)
- [How can I withdraw my stake?](https://help.multiversx.com/en/articles/6976520-how-can-i-withdraw-my-stake.md)
- [What is the service fee and what does it represent?](https://help.multiversx.com/en/articles/6976523-what-is-the-service-fee-and-what-does-it-represent.md)
- [How are agency fees applied?](https://help.multiversx.com/en/articles/6976526-how-are-agency-fees-applied.md)
- [When are rewards distributed?](https://help.multiversx.com/en/articles/6976532-when-are-rewards-distributed.md)
- [How can I unstake and how long does it take to unstake?](https://help.multiversx.com/en/articles/6976535-how-can-i-unstake-and-how-long-does-it-take-to-unstake.md)
- [What is a @herotag?](https://help.multiversx.com/en/articles/6976538-what-is-a-herotag.md)
- [What is MultiversX?](https://help.multiversx.com/en/articles/6976412-what-is-multiversx.md)
- [What is the minimum staking amount?](https://help.multiversx.com/en/articles/6976504-what-is-the-minimum-staking-amount.md)
- [How to transfer EGLD from an exchange?](https://help.multiversx.com/en/articles/6976503-how-to-transfer-egld-from-an-exchange.md)
- [How to transfer EGLD to an exchange?](https://help.multiversx.com/en/articles/6976501-how-to-transfer-egld-to-an-exchange.md)
- [How to use a Ledger with MultiversX?](https://help.multiversx.com/en/articles/6976480-how-to-use-a-ledger-with-multiversx.md)
- [How to buy an NFT?](https://help.multiversx.com/en/articles/6976477-how-to-buy-an-nft.md)
- [How to choose a staking provider?](https://help.multiversx.com/en/articles/6976472-how-to-choose-a-staking-provider.md)
- [How to stake?](https://help.multiversx.com/en/articles/6976470-how-to-stake.md)
- [What is an ESDT?](https://help.multiversx.com/en/articles/6976467-what-is-an-esdt.md)
- [How to create a wallet?](https://help.multiversx.com/en/articles/6976464-how-to-create-a-wallet.md)
- [How can I buy EGLD?](https://help.multiversx.com/en/articles/6976461-how-can-i-buy-egld.md)
- [What is EGLD?](https://help.multiversx.com/en/articles/6976451-what-is-egld.md)
- [What is Adaptive State Sharding?](https://help.multiversx.com/en/articles/6976443-what-is-adaptive-state-sharding.md)
- [What is Secure Proof of Stake?](https://help.multiversx.com/en/articles/6976437-what-is-secure-proof-of-stake.md)
- [How is MultiversX different?](https://help.multiversx.com/en/articles/6976429-how-is-multiversx-different.md)
- [Who is building MultiversX?](https://help.multiversx.com/en/articles/6976420-who-is-building-multiversx.md)
- [What amount of eGold can I delegate?](https://help.multiversx.com/en/articles/4536300-what-amount-of-egold-can-i-delegate.md)
- [Can I withdraw my previously delegated amounts?](https://help.multiversx.com/en/articles/4536332-can-i-withdraw-my-previously-delegated-amounts.md)
- [Can I claim my delegation rewards?](https://help.multiversx.com/en/articles/4536335-can-i-claim-my-delegation-rewards.md)
- [Can I delegate more than once from the same wallet?](https://help.multiversx.com/en/articles/4536337-can-i-delegate-more-than-once-from-the-same-wallet.md)
- [How to delegate with Ledger?](https://help.multiversx.com/en/articles/4542388-how-to-delegate-with-ledger.md)
- [How to withdraw from the delegation waiting list or from active delegation](https://help.multiversx.com/en/articles/4695314-how-to-withdraw-from-the-delegation-waiting-list-or-from-active-delegation.md)

## Building on MultiversX

- [Learn How MultiversX Works](https://help.multiversx.com/en/articles/6976631-learn-how-multiversx-works.md)
- [Create a Token](https://help.multiversx.com/en/articles/6976630-create-a-token.md)
- [Manage a Wallet](https://help.multiversx.com/en/articles/6976627-manage-a-wallet.md)
- [Integrate a Platform](https://help.multiversx.com/en/articles/6976626-integrate-a-platform.md)
- [Run a Validator Node](https://help.multiversx.com/en/articles/6976622-run-a-validator-node.md)
- [Discover MultiversX](https://help.multiversx.com/en/articles/6976616-discover-multiversx.md)
- [Is MultiversX open-source?](https://help.multiversx.com/en/articles/4026500-is-multiversx-open-source.md)
- [Start Building](https://help.multiversx.com/en/articles/6976619-start-building.md)

## Guardians feature

- [How does the Guardian work?](https://help.multiversx.com/en/articles/8114051-how-does-the-guardian-work.md)
- [Why does it take 20 days to change a Guardian?](https://help.multiversx.com/en/articles/8114057-why-does-it-take-20-days-to-change-a-guardian.md)
- [What do I have to do if my account is compromised?](https://help.multiversx.com/en/articles/8114059-what-do-i-have-to-do-if-my-account-is-compromised.md)
- [What happens if I lose access to my authenticator?](https://help.multiversx.com/en/articles/8114062-what-happens-if-i-lose-access-to-my-authenticator.md)
- [How can I use an xPortal account on the WebWallet if it has the Invisible Guardian enabled?](https://help.multiversx.com/en/articles/8114065-how-can-i-use-an-xportal-account-on-the-webwallet-if-it-has-the-invisible-guardian-enabled.md)