#Core blockchain concepts,

Here are the core concepts of blockchain:

1. **Decentralization:** In a blockchain network, there is no central authority or intermediary. Instead, data is distributed across a network of nodes (computers) that participate in the network.

2. **Blocks:** A blockchain is composed of a series of blocks, each containing a set of transactions.

3. **Transactions:** Transactions are records of data exchanges or interactions on the blockchain. In a cryptocurrency context, transactions represent the transfer of digital assets (e.g., #BTC) from one user to another.

4. **Consensus Mechanisms:** To maintain the integrity of the blockchain and agree on the state of the ledger, blockchain networks use consensus mechanisms. Common mechanisms include Proof of Work (PoW) and Proof of Stake (PoS). These mechanisms ensure that all nodes in the network agree on the validity of transactions and the order in which they are added to the blockchain.

5. **Cryptographic Hashing:** Each block in the blockchain contains a cryptographic hash of the previous block.

6. **Immutability:** Once data is recorded on the blockchain, it is extremely difficult to alter or delete. This immutability is achieved through cryptographic techniques and the consensus mechanism, making blockchain a tamper-resistant ledger.

7. **Distributed Ledger:** The ledger, or record of transactions, is distributed across all nodes in the network.

8. **Smart Contracts:** Smart contracts are self-executing contracts with the terms of the agreement between parties directly written into code. They automatically execute when predetermined conditions are met. #ETH is a popular blockchain platform for creating and executing smart contracts. and now #CoreChain.

9. **Public vs. Private Blockchains:** Public blockchains (like #BTC and #ETH ) are open to anyone, while private chains are restricted to a select group of participants.

10. **Cryptocurrency:** Some chains, like Bitcoin, have their own native cryptocurrencies that is used as fuel within the Blockchain.