Digital Identity

Digital identity in the crypto context has evolved beyond simple usernames and passwords into a portable, cryptographically verifiable record that a person, organisation, or device can hold and control directly, rather than one issued and gatekept by a single bank, government agency, or platform.

Blockchain-based digital identity typically relies on a Decentralized Identifier (DID) paired with verifiable credentials: signed statements from a trusted issuer, such as a government or university, confirming an attribute like age or a qualification. These credentials are stored in a digital wallet and shared only when needed, often using a Zero Knowledge Proof so a person can prove they meet a requirement, such as being over 18, without revealing their full date of birth or any other personal data.

This matters for crypto because exchanges and other regulated platforms must run identity checks before onboarding users, and a reusable, user-held identity reduces the need to resubmit documents to every new service. Regulators are pushing the model forward too: the European Union's Digital Identity Wallet framework requires member states to offer citizens a compliant digital ID, aiming to eventually cover hundreds of millions of people for everything from banking to public services.

A prominent, if controversial, crypto-native example is World Network, formerly Worldcoin, which scans a person's iris with a device called the Orb to issue a World ID, a proof-of-personhood credential meant to distinguish real humans from bots and AI agents online. The project has faced regulatory bans and privacy concerns in several countries over biometric data collection, illustrating the ongoing tension between convenient identity verification and data protection in decentralized systems.