Cryptocurrency is digital money secured by cryptography, operating independently of central authorities. It uses blockchain technology for transparent and secure transactions across a decentralized network. 

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Blockchain is a decentralized ledger technology where transactions are recorded across a network of computers. Every transaction is securely connected to the preceding one, forming a chain of blocks that cannot be changed retroactively. It provides transparency, security, and immutability, revolutionizing various industries beyond finance.

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Diversification: Investing in cryptocurrency provides diversification in an investment portfolio, potentially reducing overall risk by spreading investments across different asset classes, including those available on every  global crypto exchange where you can buy BTC or to buy Bitcoin.

High Potential Returns: Cryptocurrency markets are known for their volatility, which can lead to significant price fluctuations. While this volatility carries risks, it also presents opportunities for high returns on investment.

24/7 Market: Unlike traditional financial markets that operate during specific hours, cryptocurrency markets are open 24/7, allowing investors to buy, sell, or trade digital assets at any time, using every cryptocurrency exchange app.

Global Accessibility: Cryptocurrencies can be bought, sold, and transferred across borders without the need for intermediaries like banks.

Innovation: Investing in cryptocurrency offers exposure to innovative technologies and projects driving the blockchain ecosystem forward.

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Cryptocurrency is used in blockchain in three main steps:

Transactions: Users initiate transactions by sending cryptocurrency from one digital wallet to another. These transactions are broadcasted to the blockchain network.

Verification: Miners or validators on the blockchain network verify the validity of these transactions through cryptographic algorithms. Once verified, the transactions are grouped together into blocks.

Recording: Verified transactions are then added to the blockchain as a new block, forming a chronological chain of blocks. This process ensures transparency, security, and immutability of transaction records on the blockchain.

In conclusion, cryptocurrency represents digital money secured by cryptography, while blockchain serves as a decentralized ledger recording transactions across a network. Both offer transparency and security, revolutionizing finance and beyond. 

Investing in cryptocurrency diversified portfolios and taps into potential high returns, facilitated by 24/7 markets and global accessibility. Cryptocurrency's use in blockchain involves transactions, verification, and recording, ensuring transparency and security in a decentralized manner.