Chainwarden | Offline Blockchain Address Validation

Open-source Java address validation<br>Validate before funds move.<br>Chainwarden checks blockchain addresses against the intended chain before your app accepts them. Offline validation, exposed through a simple backend API.<br>Try validationInstall library<br>Offline-first validationJava library coreMulti-network API surfaceBackend-ready verdicts

Java libraryAdd Chainwarden to your backend.<br>Use the open-source core package directly from Maven, then call it from your service layer for offline address validation.<br>View sourceMaven Central

MavenCopy

org.chainwarden<br>chainwarden-core<br>0.1.0

Live backend requestAddress verdict

POST /api/validate<br>Address0x52908400098527886E0F7030069857D2E4169EE7BitcoinEthereumSolanaTronBasePolygon PoSBNB Smart ChainArbitrum OneAvalanche C-ChainTONXRP<br>Validate addressLoad sample<br>Awaiting request<br>Ready for validation<br>Choose a chain and send the address to Chainwarden's live offline validation API.<br>0x52908400098527886E0F...<br>Paste an address<br>Select the intended network<br>Ask Chainwarden for a verdict

Multi-chain surfaceOne guardrail, many address formats.

BitcoinEthereumSolanaTronBasePolygonBNB Smart ChainArbitrumAvalancheTONXRPBitcoinEthereumSolanaTronBasePolygonBNB Smart ChainArbitrumAvalancheTONXRP

ContactBuilding with Chainwarden?<br>Share the network list, backend shape, or exchange flow you want to protect. The validation endpoint can be adapted to your Java service boundary.<br>Email OleksandrFollow on X

DonateSupport offline validation tooling.<br>Contributions help keep address rules current, docs clear, and the Java library useful for wallets, exchanges, and backend teams.<br>GitHub Sponsors