Verifying real wallet ownership without gas: a signed-nonce pattern with viem +

<h2> What If Your Auth System Collected Zero Personal Data? </h2> <p>Traditional authentication has a common pattern: it requires you to collect personal information before you

<h2> The shape of the problem </h2> <p>Most "login with X" integrations work the same way: your server gets a token, and to find out if it's real, it has to ask the provider. That

<p>I review a lot of webhook handlers. Roughly <strong>3 out of 5 either have a subtle signature-verification bug</strong> — or someone disabled verification entirely "to make it

<p>JWT (JSON Web Tokens) have become a default choice for authentication and authorisation in modern systems.</p> <p>They are widely adopted because they are:</p> <ul>