Blockchain, the technology behind Bitcoin, is a decentralised, public ledger of all transactions. Its security and transparency come from being distributed across multiple computers, making it nearly impossible to tamper with. Blockchain’s potential extends beyond cryptocurrency, with applications in many industries, from finance to healthcare.

The main advantage of blockchain is its decentralised nature, eliminating the need for a central authority or intermediary. Each transaction is verified by multiple nodes, ensuring its authenticity and security. This decentralisation also makes blockchain highly resistant to cyber attacks, as there’s no single point of failure.

Blockchain also provides transparency, with every transaction visible to all participants. This transparency can prevent fraud, increase trust, and streamline business processes. However, it also raises privacy concerns, as sensitive information can be exposed to all participants.

Smart contracts, self-executing contracts with the terms directly written into code, are another application of blockchain. These contracts automatically execute when conditions are met, reducing the need for intermediaries and increasing efficiency.

While blockchain holds great potential, it also faces challenges. High energy consumption, slow transaction times, and regulatory uncertainty are some of the issues that need to be addressed before blockchain can achieve widespread adoption.

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