Chainwarden
Offline crypto address validation for Java
Chainwarden launched on August 18, 2026 with 2 votes, #5,788 of 23,274 launches that month.
What it does
A Java library for offline blockchain address validation across Bitcoin, Ethereum, Solana, Tron, and more.
Chainwarden checks blockchain addresses against the intended chain before your app accepts them. Offline validation, exposed through a simple backend API. Use the open-source core package directly from Maven, then call it from your service layer for offline address validation. Choose a chain and send the address to Chainwarden's live offline validation API. Share the network list, backend shape, or exchange flow you want to protect. The validation endpoint can be adapted to your Java service boundary. Contributions help keep address rules current, docs clear, and the Java library useful for wallets, exchanges, and backendfrom chainwarden.org
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