Basic Knowledge #layer1layer2
Mainnet: Has ultimate security and data consistency, with all transaction data recorded on its local ledger. Features absolute security but has prominent performance bottlenecks (slow speed, high fees). Representatives: Bitcoin, Ethereum Mainnet.
Sidechain: An independent blockchain with its own consensus mechanism and governance. It connects to the main chain via a "two-way bridge," allowing assets to be transferred across chains. Features: Independent kingdom, risks are self-borne. Representatives: Polygon PoS Chain (formerly known as Matic), Ronin.
Layer 2 (L2): Not an independent chain, its security relies entirely on the main chain (Ethereum). It only executes transactions outside the main chain and ultimately sends transaction data or proofs back to the main chain for final settlement. Features: Security inherits from the main chain, performance self-improvement. Representatives: Arbitrum, Optimism, zkSync.
Mainnet: Has ultimate security and data consistency, with all transaction data recorded on its local ledger. Features absolute security but has prominent performance bottlenecks (slow speed, high fees). Representatives: Bitcoin, Ethereum Mainnet.
Sidechain: An independent blockchain with its own consensus mechanism and governance. It connects to the main chain via a "two-way bridge," allowing assets to be transferred across chains. Features: Independent kingdom, risks are self-borne. Representatives: Polygon PoS Chain (formerly known as Matic), Ronin.
Layer 2 (L2): Not an independent chain, its security relies entirely on the main chain (Ethereum). It only executes transactions outside the main chain and ultimately sends transaction data or proofs back to the main chain for final settlement. Features: Security inherits from the main chain, performance self-improvement. Representatives: Arbitrum, Optimism, zkSync.