📝 Definition:
A block is a group of transactions recorded together on a blockchain.
Each block contains a list of transactions, a timestamp, and a reference to the previous block, forming a chain of blocks.
🔑 Key Features:
- Transaction List: Contains a list of verified transactions.
- Timestamp: Records the time when the block was created.
- Hash: Includes a unique code that links to the previous block.
- Data Integrity: Ensures the data in the block can’t be changed without changing all the blocks that follow.
⚙️ How It Works:
- Transaction Collection: Transactions are collected and grouped together in a block.
- Verification: Transactions in the block are verified by network nodes.
- Block Creation: Once verified, the block is added to the blockchain.
- Linking Blocks: Each block is linked to the previous one, forming a secure chain.
💡 Applications:
- Data Integrity: Ensures that transaction data is secure and can’t be modified.
- Transparency: Provides a clear record of all transactions.
- Security: Makes the blockchain safer by linking blocks together.
- Decentralization: Supports the decentralized nature of blockchain networks.
🔍 Example:
Imagine building a tower with LEGO bricks.
Each brick represents a block of transactions.
Once you stack a new brick on top, it’s securely linked to the one below it.
If someone tries to mess with one brick, it would mess up the whole tower.
In the crypto world, blocks work the same way.
They securely record and link transactions on the blockchain.