# 💱Blockchain Basics

<mark style="color:blue;">**What is Cryptocurrency?**</mark>

Cryptocurrency is a digital asset designed to serve as a medium of exchange. Utilising cryptographic techniques for transactions, additional unit creation, and asset transfer verification, most cryptocurrencies operate on a blockchain infrastructure.

<mark style="color:blue;">**What is Cryptography?**</mark>

Cryptography is the field of study focused on methods for ensuring privacy, data consistency, and authenticity. It serves as a fundamental pillar of the crypto industry by safeguarding personal information, preventing unauthorised data modifications, and verifying authentication and other object properties.

<mark style="color:blue;">**What is Market Capitalization in the Crypto Industry?**</mark>

Market capitalization (market cap) represents the total value of cryptocurrency in circulation, calculated by multiplying the current coin price by the total number of coins issued.

<mark style="color:blue;">**What is a Public Key?**</mark>

The public key is a freely accessible character string paired with a private key corresponding to a Bitcoin address. This cryptographic pair ensures the security and integrity of transactions within the blockchain network, where the public key serves as the identifier for receiving funds.&#x20;

<mark style="color:blue;">**What is a Private Key?**</mark>

The private key is a character string that grants access to a wallet or Bitcoin address. Possession of the private key confers control over the associated funds, emphasising the need for secure management.

<mark style="color:blue;">**What is a Distributed Ledger?**</mark>

A distributed ledger is an agreement on data synchronisation and reproducibility. In cryptocurrency networks, data distribution occurs across multiple processors and networks, differing from centralised ledgers where a single entity manages all synchronised and reproduced data.

<mark style="color:blue;">**What is a Pool?**</mark>

A pool, or mining pool, refers to computing resources combined by multiple miners. Participants in the pool distribute profits based on the individual efforts each contributed to solving tasks.

<mark style="color:blue;">**What is FUD?**</mark>

FUD (fear, uncertainty, and doubt) is a market manipulation strategy involving the dissemination of disinformation to decrease prices. Genuine FUD may also arise from factors such as potential regulatory actions affecting cryptocurrency values.

<mark style="color:blue;">**What is a Node?**</mark>

A node is a network point crucial for the secure functioning of a cryptocurrency network. A network can resolve the double-spending problem using randomly selected nodes to validate transactions.

<mark style="color:blue;">**What is Mining?**</mark>

Mining is a foundational element in the cryptocurrency structure. Miners who perform mining add transaction blocks to the blockchain, earning cryptocurrency as a reward.

<mark style="color:blue;">**What is Hashrate?**</mark>

The hash rate refers to the hardware processing capacity for cryptocurrency mining, measured in hash per second. This metric quantifies the speed at which a mining device can execute complex mathematical algorithms, determining its efficiency in solving blocks on the blockchain.&#x20;

<mark style="color:blue;">**Who are Whales?**</mark>

Whales are individuals or groups with substantial cryptocurrency holdings, enabling them to influence the market through their significant share.

<mark style="color:blue;">**What is Blockchain?**</mark>

Blockchain is a distributed ledger of financial transactions, forming a chain where each unit is cryptographically linked to the preceding one. It serves as a secure and unalterable database of transactions managed by a peer-to-peer network.

<mark style="color:blue;">**What is Proof-of-Work?**</mark>

Proof-of-Work (PoW) is the process of validating new blocks in a blockchain, requiring validators to solve puzzles using computing power to verify transactions and create new blocks.

<mark style="color:blue;">**What is an ICO?**</mark>

ICO (Initial Coin Offering) is a method of raising capital with cryptocurrency, analogous to crowdfunding platforms like Kickstarter. Developers present their projects, and individuals invest in them using cryptocurrencies.

<mark style="color:blue;">**Is Mining Cryptos Popular?**</mark>

Approximately 17 million bitcoins have been mined, constituting 80% of the total possible supply. So, yes, mining cryptos is a viral phenomenon.&#x20;

<mark style="color:blue;">**What is Sharding?**</mark>

Sharding is a scalability solution for blockchain where each node holds a partial replica of the entire blockchain. This method enhances the overall capacity and consensus speed of the network.