Layer 1 Coins 101: Everything You Need to Know
What is a Layer 1 coin?
An L1 coin is the native asset of a base blockchain that finalizes transactions and anchors security (e.g., BTC for Bitcoin, ETH for Ethereum). L1 networks provide the canonical ledger and consensus (e.g., proof-of-work or proof-of-stake). L2 systems batch or offload work, but ultimately rely on the L1 for settlement and data availability (e.g., Ethereum with rollups; Bitcoin with Lightning).
Why L1 vs. L2 matters
- Security & finality live at L1.
- Scale & lower fees often come from L2s that post proofs/data back to the L1.
- The split lets L1s remain conservative and secure while L2s iterate quickly.
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