**What is Blockchain Architecture?**

Blockchain architecture is the backbone of the technology that forms the foundation of cryptocurrency and numerous other decentralized applications. It's a decentralized, distributed database that stores transactional data in blocks, linked together via cryptographic techniques to form a chain. The architecture of blockchain ensures security, transparency, and immutability of data.

**Blockchain Architecture Overview**:

1. **Blocks**: Each block in the blockchain holds a set of transactions. These transactions are validated by the network before being added to a new block.

2. **Chain Structure**: The blockchain is composed of multiple blocks linked together in a chain. Each block contains the cryptographic hash of the previous block, creating a chain of blocks.

3. **Distributed Network**: The blockchain operates on a distributed network, where every participant (node) has a copy of the blockchain. This ensures the decentralization and robustness of the system.

4. **Consensus Mechanism**: Nodes in the network agree on the validity of transactions and blocks through a consensus mechanism, ensuring the integrity of the blockchain.

5. **Smart Contracts**: Many blockchains support smart contracts, which are self-executing contracts with the predetermined rules for execution based on the satisfaction of certain conditions.

**Features of Blockchain Architecture**:

1. **Security**: Blockchain provides secure records of transactions with built-in mechanisms against double spending and fraud.

2. **Transparency**: All transactions on the blockchain are visible to all participants, ensuring transparency.

3. **Immutability**: Once a block is added to the blockchain, it becomes almost impossible to alter its contents.

4. **Decentralization**: The blockchain is not controlled by any single entity, ensuring no single point of failure.

**How Blockchain Architecture Works**:

Blockchain operates through a series of processes, including transaction creation, validation, addition to a block, and confirmation on the blockchain. Nodes in the network play crucial roles in these processes, ensuring the integrity and security of the system.

**Applications of Blockchain Architecture**:

Blockchain technology has numerous applications beyond cryptocurrencies. It's used in supply chain management, identity verification, digital voting, healthcare, and more. The decentralized and secure nature of blockchain makes it ideal for various industries that require trustless transactions and verification.

**Conclusion**:

Blockchain architecture is revolutionizing how we store and transfer value, along with various other applications across different industries. Its decentralized, secure, and transparent nature make it a promising technology for the future. Understanding blockchain architecture is crucial for those looking to harness its potential and capitalize on its numerous benefits.

This article provided an overview of blockchain architecture, its features, how it works, and its various applications. It's intended to serve as a starting point for those looking to learn more about this transformative technology.