How Web3 applications work

30 Sep 2026 · Blockchain

A Web3 app is usually a website or mobile client that talks to a wallet and to blockchain infrastructure. Most of the product is still off-chain: sessions, support, and data that does not belong on a public ledger.

The moving parts

Wallet, network, contract, indexer/API, UI. If any piece fails, the user sees a hash and leaves. Design for failure.

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