Layer-1 blockchains are the foundational layer of blockchain networks, providing the core infrastructure for decentralized applications (DApps) and smart contracts. They have unique characteristics and functionalities that set them apart. Here are some examples of prominent Layer-1 blockchains:

1. Bitcoin (BTC):
- Bitcoin is the first and most well-known Layer-1 blockchain, created by an anonymous person or group known as Satoshi Nakamoto.
- It's primarily used as a digital store of value and a medium of exchange, emphasizing security and decentralization.
- Bitcoin's consensus mechanism is Proof of Work (PoW).

2. Ethereum (ETH):
- Ethereum is a pioneering Layer-1 blockchain designed for the development of decentralized applications and smart contracts.
- It introduced the concept of Turing-complete scripting, enabling developers to create a wide range of DApps.
- Ethereum uses PoW but is transitioning to a Proof of Stake (PoS) consensus mechanism with Ethereum 2.0 to improve scalability and sustainability.

3. Binance Smart Chain (BSC):
- BSC is a Layer-1 blockchain created by Binance, one of the world's largest cryptocurrency exchanges.
- It's known for its compatibility with Ethereum, allowing developers to easily port their Ethereum DApps to BSC.
- BSC uses a PoS-based consensus mechanism, offering faster transaction speeds and lower fees compared to Ethereum.

4. Solana (SOL):
- Solana is a high-performance Layer-1 blockchain designed for decentralized applications and crypto projects requiring fast transaction speeds.
- It employs a unique PoH (Proof of History) and PoS consensus mechanism, enabling it to handle a high throughput of transactions with low fees.

5. Cardano (ADA):
- Cardano is a Layer-1 blockchain known for its research-driven approach and commitment to sustainability and scalability.
- It uses a PoS consensus mechanism and aims to provide secure and scalable infrastructure for DApps, particularly in the financial sector.

6. Polkadot (DOT):
- Polkadot is a Layer-1 blockchain that focuses on interoperability between different blockchains and networks.
- It employs a unique relay chain and parachain architecture, allowing multiple blockchains to connect and share information.

These Layer-1 blockchains cater to a variety of use cases, from digital payments and finance to gaming and decentralized finance (DeFi). Each blockchain has its strengths and weaknesses, making them suitable for different applications and communities within the blockchain ecosystem. As the blockchain space continues to evolve, more Layer-1 solutions are likely to emerge, offering even greater diversity and innovation.

Layer-1 blockchains are the foundational networks in blockchain ecosystems, responsible for managing and validating transactions, maintaining security, and supporting smart contracts. Examples include:

1. Bitcoin: The first and most widely known blockchain, primarily designed for secure, decentralized digital currency transactions.
2. Ethereum: A versatile blockchain enabling smart contracts and decentralized applications (dApps), widely used for decentralized finance (DeFi) and NFTs.
3. Binance Smart Chain (BSC): A fast, low-cost blockchain supporting smart contracts and dApps, popular for DeFi projects.
4. Solana: Known for high scalability and speed, ideal for high-performance applications like gaming and DeFi.
5. Cardano: Focuses on sustainability, scalability, and security with a research-driven approach.

These blockchains form the base layer on which Layer-2 solutions and applications are built.