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OpenETR

Check Bitcoin Balance

Resolve an nsec, npub, NIP-05 identifier, or a bare domain such as example.com. The app derives the canonical Taproot p2tr address and looks up its balance through the configured Esplora API.

Check Silent Payment Ownership

Check whether a Silent Payment address belongs to an npub or the npub resolved from a NIP-05 identifier. Leave the Silent Payment address blank to generate and display the derived sp1... address for that identity.