{"id":197379,"date":"2026-05-26T06:39:58","date_gmt":"2026-05-26T10:39:58","guid":{"rendered":"https:\/\/innowise.com\/?p=197379"},"modified":"2026-05-27T06:41:50","modified_gmt":"2026-05-27T10:41:50","slug":"decentralized-identifiers","status":"publish","type":"post","link":"https:\/\/innowise.com\/it\/blog\/decentralized-identifiers\/","title":{"rendered":"Cos'\u00e8 un identificatore decentralizzato (DID)? Guida all'identit\u00e0 digitale basata su blockchain"},"content":{"rendered":"\t\t
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What is a decentralized identifier (DID)? A guide to blockchain-based digital identity<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\r\n Andrew Nalichaev<\/a>\r\n <\/div>\r\n\r\n
\r\n May 26, 2026<\/span>\r\n 15 min read<\/span>\r\n <\/div>\r\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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You\u2019ve probably seen it yourself: feed GPT a selfie, ask for a passport-style document, and within minutes, you get something that can get past basic visual checks. Add voice cloning and synthetic video, and \u201cliveness\u201d starts to look like theater. That\u2019s the real break in digital identity in 2026<\/span>. The photo-based KYC model itself is wearing out. If identity proof still depends on images being hard to fake, you\u2019re building on sand.<\/span><\/p>

So where does that leave us? With a pretty obvious shift: away from storing identity data and toward verifying claims cryptographically. Instead of collecting a passport scan and parking it in another database, the system asks for proof: are you over 18, have you passed KYC, are you cleared for this transaction, and <\/span>can you prove it without revealing anything else?<\/b>\u00a0<\/span><\/p>

But what changes exactly? Why are we suddenly talking about DIDs and verifiable credentials?\u00a0<\/b><\/p>

Because in a DID-based model, trust doesn\u2019t come from what something looks like. It comes from who signed it and whether you can prove control over it. A deepfake selfie doesn\u2019t help if the verifier expects a credential signed by a trusted issuer and bound to your cryptographic keys. You\u2019re no longer trying to \u201clook real.\u201d You\u2019re proving possession of a valid, signed claim. Images stop being the source of trust. Signatures take over.\u00a0<\/span><\/p>

And that\u2019s the point of this guide: I\u2019ll show how that model works, why it\u2019s becoming the serious path forward, and where blockchain fits into it.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What is a decentralized identifier (DID)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A decentralized identifier, or DID, is a URI-based identifier designed to be controlled through cryptographic keys rather than issued and managed by a central directory. Under the <\/span>World Wide Web Consortium (W3C)<\/span><\/a> DID standard, a DID resolves to a DID document that informs other systems on how to verify signatures, authenticate the controller, or discover service endpoints associated with that identifier. In plain English: a DID is not your profile, your passport, or your account record. It\u2019s the pointer other parties use to verify that you control a specific identifier and the keys behind it.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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How a DID differs from traditional identifiers<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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This is where people often flatten everything into \u201cjust another ID.\u201d It\u2019s not.<\/span><\/p>

An email address is really a locator inside someone else\u2019s system. If the provider suspends the account, the identifier is effectively gone. An SSN is a state-issued identifier, but it has no built-in cryptographic proof layer; anyone who gets the number can replay it. OAuth tokens are different again: they\u2019re not identity identifiers at all, but delegated access artifacts issued by an authorization server so a client can call a protected resource. Useful, yes. Portable identity layer, no.<\/span><\/p>

A DID works differently. <\/span>It is meant to be resolved, not merely looked up in a vendor database.<\/b> Control sits with the subject through key material and the rules of the DID method, not with a mail provider, SaaS platform, or identity broker. That distinction matters in practice. If you\u2019re building reusable credentials, wallet-based login, or verifier flows that should work across organizational boundaries, an email or app-specific user ID won\u2019t carry enough trust semantics. A DID can.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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DID structure: did:method:identifier<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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At the syntax level, the W3C model is simple: a DID has three parts: the DID scheme, a method name, and a method-specific identifier. In other words: <\/span>did:method:identifier<\/span>.<\/span><\/p>

Take <\/span>did:web:example.com<\/span> as a concrete example.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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