Projeto Internet do futuro

Summary

The presentation examines whether self-sovereign identity (SSI) could replace today’s platform-based logins. The speaker argues that passwords, password managers, passkeys, and “Sign in with Google/Apple/Facebook” each improve convenience or security in some ways, but can still leave people dependent on a device, company, or centralized account. That dependence can create privacy risks, single points of failure, and difficulties moving credentials between services or recovering access.

SSI aims to give people more control over their digital credentials. In the triangular trust model described, an issuer provides a verifiable credential to a person’s digital wallet. A verifier can then check the credential’s cryptographic signature without needing the issuer to participate in every verification.

The wallet can disclose only the information needed—for example, proving that someone is over 18 without revealing their birth date or other personal details. The speaker presents selective disclosure and zero-knowledge proofs as ways to reduce unnecessary data sharing.

Requirements and obstacles

The talk identifies several requirements and adoption challenges:

• Requirements: Authentication, control over identity, privacy, portability, verifiability, revocation, recovery, interoperability, and governance.
• Adoption challenges: Reliably linking credentials to a person or organization; immature or competing protocols; usability difficulties; regulatory uncertainty; achieving widespread adoption; and infrastructure concerns, including the energy use associated with some blockchains.
• Wallet recovery: Losing a phone could mean losing access to credentials. Social recovery—appointing trusted guardians such as friends, family members, or a lawyer—is presented as one proposed approach, though the speaker says there is no standardized solution yet.
• Blockchain and privacy: SSI does not necessarily require blockchain. The presentation notes concerns about the public visibility of records and discusses limiting access to registration data if blockchain is used.

Examples discussed

The speaker refers to implementations or experiments involving age verification in Germany, anonymous verification in Poland, and digital driver’s licenses within the European Union. A national-scale example, apparently Bhutan based on the transcript, is discussed as evidence that deployment is possible. It also raises questions about whether a system tied to a government-controlled blockchain simply shifts the dependency elsewhere.

Overall assessment

The presenter considers SSI technically viable, citing mature W3C standards and real-world implementations, but says adoption remains limited and institutionally in transition. Usability, recovery, infrastructure, and social acceptance make it unlikely to become the universal internet standard within the next five to ten years, though specific applications may adopt it.

Review or guide: This is an explanatory presentation, not a product review or step-by-step tutorial.

Main speaker and sources

• Main speaker: Rilson Joás, presenting the topic.
• Sources and references mentioned: W3C standards; principles attributed to Allen (2016); and country or regional examples discussed in the presentation. The transcript says a sources slide is shown but does not provide its full bibliography.