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Web3.codes is for people learning to build on blockchains: the languages, the tools and the security habits that matter.

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Once deployed, most smart contract code cannot be changed. Bugs can be permanent and expensive.

Immutability

Solidity is the most used language for Ethereum-compatible chains. Rust powers several other networks.

Solidity

Developers build and test on local chains and public test networks before touching real money.

Test network

Apps talk to a blockchain through RPC endpoints, run on your own node or by a provider.

RPC

Independent audits, automated testing and well-known libraries reduce risk. No audit makes code perfectly safe.

Audit

Read verified contracts on block explorers and open-source repositories. Real code teaches faster than tutorials alone.

Open source

Educational only. Some links are affiliate links; we may earn a commission at no cost to you.