Ethereum uses the internet; it does not replace the whole thing.
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A shared notebook can travel over the postal system without replacing every letter, magazine and delivery service.
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Receive, check and share across independent nodesStep 1 / 4
A node receives a proposed transaction or block-related message. Receipt is not the same as accepting its claims.
A node receives a proposed transaction or block-related message. Receipt is not the same as accepting its claims.The node checks the relevant authorization and protocol rules. Popularity does not make an invalid state transition valid.Valid candidate data can propagate to peers. Connections and timing differ, so there is no perfect simultaneous worldwide view.Peers validate under the same protocol rules. This illustration is about verification and propagation, not a complete proof-of-stake consensus algorithm.
Animated local teaching model. No wallet, RPC or live blockchain data. Some labels and hashes are abbreviated for readability.
The internet carries the messages
Ethereumnodes communicate using internet connections. Websites and wallet interfaces also use familiar web technologies. Ethereum adds a shared state and execution system on top of that communication infrastructure.
Not everything belongs onchain
Large videos, private conversations and rapidly changing interface details usually do not need worldwide replication and consensus. Storing data onchain has costs and privacy implications. Applications often combine ordinary web services with contracts.
What changes for an app?
A contract can make a particular set of rules publicly verifiable. A user may authorize updates through a wallet. The app’s images, search, customer support or external data may still come from conventional services.
Learn the layers
Read nodes for network access and smart contracts for shared execution. Keeping these layers separate makes it easier to understand which promises a product actually provides.
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Does Ethereum replace the internet?
Ethereum is a network and execution protocol using internet infrastructure, not a replacement for all internet services.