Layer 1

Layer 1 refers to a base network, such as Bitcoin, BNB Chain, or Ethereum, and its underlying infrastructure. Layer-1 blockchains can validate and finalize transactions without the need for another network.

—. “What Is Layer 1 in Blockchain?” Binance Academy, 28 Dec. 2022, academy.binance.com/en/articles/what-is-layer-1-in-blockchain.