# FAQs

## Frequently Asked Questions

Find answers and solutions for commonly seen errors and areas of confusion within our curated series of FAQ articles.

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## What is a Wallet Address?

In Spartan Non-Cryptocurrency Public Chains, a Wallet Address is a Gas Credit receiving address, which is a unique sequence of hexadecimal numbers.

## What is a Private Key?

A private key is a secret number that is used in cryptography, similar to a password. In cryptocurrency, private keys are also used to sign transactions and prove ownership of a blockchain address.

## What is a Spartan Virtual Data Center?

A Spartan Virtual Data Center is a set of locally installed software systems that contains one or more registered full nodes of different NC Public Chains. Each Virtual Data Center has one NTT wallet and is eligible to receive Node Establishment and Data Center Monthly Incentives.

## What is Gas Credit?

In a similar fashion to cryptocurrencies, Gas Credits are used as a means of paying Gas fees on NC Public Chains. However, Gas Credits cannot be transferred between standard wallets. Only the Data Center Operator 's NTT wallet can be used to purchase Gas Credits with NTT.

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