What is Layer 1 Blockchain? A Guide to Investing in Promising Layer 1 Projects in 2026

Layer 1 blockchain represents the fundamental layer of the cryptocurrency ecosystem, functioning as an independent network capable of processing and settling transactions on its own without relying on any external support network. What is each Layer 1 blockchain in the system context? It is a complete infrastructure equipped with its own token to pay transaction fees, serving as the foundation for numerous decentralized applications, DeFi protocols, and layer 2 networks built on top.

What exactly is a Layer 1 Blockchain?

Unlike Layer 2 solutions that depend on Layer 1 infrastructure to operate, a Layer 1 blockchain functions as a fully independent system. It processes and verifies transactions autonomously, without relying on other networks. This characteristic makes Layer 1 blockchain a crucial element in crypto ecosystems — they are the backbone supporting all applications built on them.

Each Layer 1 blockchain has its own consensus mechanism, validation rules, and native token. This token is not only used for paying fees but also plays a vital role in network governance and incentivizing nodes to maintain the system.

Challenges of Early Layer 1 Blockchains

First-generation Layer 1 blockchains like Bitcoin and Ethereum face inherent limitations. Their transaction processing speeds are constrained by their architecture, leading to high transaction fees during network congestion.

Aware of these weaknesses, developers have continuously innovated and built new Layer 1 blockchains with more advanced technology. These solutions not only address previous limitations but also introduce enhanced features and broader applications compared to earlier projects.

Transaction Performance: Comparing Layer 1 via TPS

To evaluate each Layer 1 blockchain’s processing capacity, the TPS (transactions per second) metric is most important. TPS is calculated as: number of transactions divided by processing time.

Bitcoin, with about 1,700 transactions per block, takes 10 minutes (600 seconds) to mine a block, resulting in TPS ≈ 1,700 ÷ 600 ≈ 2.83. In optimal cases with 2,500 transactions per block, TPS can reach 4.17.

Ethereum creates a block every 13 seconds with a gas limit of 30 million per block (aiming for 15 million). With a minimum of 21,000 gas per transaction, the theoretical maximum is 30,000,000 ÷ 21,000 ≈ 1,428 TPS. However, due to smart contract interactions requiring more gas, the average TPS is around 11.8.

More advanced new Layer 1 blockchains have achieved significant jumps:

• Solana: 110,000 TPS
• Aptos: 160,000 TPS

These figures demonstrate tremendous technological progress in enhancing blockchain performance.

Investment Opportunities in Current Layer 1 Blockchains

Investing in Layer 1 blockchains offers safety combined with high profit potential. Layer 1 assets are often viewed as foundational assets because their value reflects the overall development of the entire ecosystem. As new applications and protocols are built on Layer 1, demand for their native tokens increases, driving up their value.

The current market shows that Layer 1s continue to attract capital from both institutional and individual investors. Ecosystem growth on new blockchains is a key driver boosting the value of these Layer 1 assets.

Notable Layer 1 Coins in This Period

In early 2026, three Layer 1 blockchain projects are gaining particular attention from the community: APT (Aptos), SUI (Sui), and SEI (Sei).

As of market data on 03/20/2026:

• APT is trading at $0.99 with a 24-hour increase of +4.72%, indicating short-term positive sentiment
• SUI remains stable at $0.96 with minimal fluctuation (+0.07%), reflecting a stable market situation
• SEI is at $0.06 with a decrease of -1.00%, currently in accumulation phase

These projects are highly regarded for their high processing speeds, low transaction costs, and rapidly developing ecosystems. Compared to older Layer 1s, these blockchains offer significant technical and economic model improvements.

To make informed investment decisions, investors should continue monitoring ecosystem development, market acceptance, and emerging technological trends. Choosing the right Layer 1 can provide sustainable growth opportunities over the long term.