According to Dave (@ItsDave_ADA), a groundbreaking demo has been developed showcasing selective disclosure privacy using zero-knowledge (ZK) proofs directly on Cardano's Layer 1. This system allows users to verify specific credentials, such as age, without revealing personal details like name, address, or date of birth. The solution leverages Cardano's Plutus V3 validator and Groth16 for on-chain ZK proof verification, eliminating the need for sidechains or off-chain processes. This innovation has significant implications for privacy in various applications, including retail, online signups, and restricted services, enabling secure and reusable credential proofs.

According to Dave (@ItsDave_ADA), a groundbreaking demonstration showcased the use of zero-knowledge (ZK) proofs for self-disclosure privacy directly on the Cardano blockchain. The demo illustrated a scenario where a customer could prove they are of legal age to purchase alcohol without sharing personal information like name, address, or date of birth. Utilizing Cardano's Plutus V3 validators and Groth16, the ZK proof verification occurred entirely on-chain, without sidechains or off-chain processes. This approach holds potential for various applications, including age-restricted transactions and online services, emphasizing user-controlled data privacy.

According to @ItsDave_ADA, a new demo on the Cardano blockchain showcases the use of zero-knowledge (ZK) proofs for privacy-preserving age verification. The system allows users to prove they are 18 or older without sharing personal data like name, birth year, or photo. Utilizing Groth16 proofs, the Plutus V3 validator processes transactions entirely on-chain, eliminating the need for sidechains or off-chain verification. This innovation enables secure, reusable credentials for age-restricted services such as purchasing alcohol, enhancing privacy and utility.

According to @ItsDave_ADA, Midnight ($NIGHT) is a privacy-focused partner chain on Cardano that enables users to build and run confidential smart contracts using zero-knowledge proofs. This technology allows for secure handling of sensitive data, such as anonymous evidence in whistleblower applications or private prediction markets. Users can also leverage selective disclosure to reveal only necessary details, such as proving compliance without exposing full information. The mainnet is scheduled to launch in late March 2026 with a federated validator set supported by key partners including Google Cloud, MoneyGram, Vodafone’s Pairpoint, and eToro, before transitioning to greater decentralization.

According to @Celo, SelfProtocol has been announced as a sponsor for the 'Build Agents for the Real World' hackathon. SelfProtocol leverages zero-knowledge (zk) technology to provide proof-of-human and identity verification solutions for the agentic web. This innovative approach allows agents to act on users' behalf without exposing sensitive data, enhancing privacy and trust in decentralized environments.

According to @1HowardWu, access to ALEO has expanded as Kraken has listed ALEO, making onboarding to the Aleo ecosystem easier for its large global community (source: @1HowardWu on X). Kraken stated ALEO is now live on its platform and that ALEO powers Aleo, a Layer 1 blockchain using zero knowledge proofs for private and programmable transactions (source: @krakenfx on X). The listing adds a centralized exchange venue for ALEO exposure on a widely used platform, which the author highlights as meaningful for user onboarding (source: @1HowardWu on X).