PrivyFit: Privacy-Focused Social Fitness AppGoal Setting:* Users set their target weight and deadline.* This information is encrypted and stored.1. Initial Weight Recording:  * Users record their starting weight.  * This information is also encrypted and stored.2. Daily Weight Recording:  * Users regularly (daily or weekly) record their weight.  * All records are encrypted and stored.3. Progress Check Towards Goal:  * The system uses encrypted data to determine if the user is on track to their goal.  * This determination considers current weight, initial weight, target weight, elapsed time, and set deadline.4. Zero-Knowledge Proof Generation:  * The system proves the fact that "the user is on track towards their goal" or "the user is off track".  * When the target weight is reached, the system generates a proof of achievement.  * These proofs do not include specific weight numbers.5. Progress Sharing on Social Media:  * Users can share their progress proofs on social media platforms.  * The shared information states whether they are "on track", "off track", or have "reached their goal".  * Users can regularly update their progress without revealing actual weights.  * When the target is reached, users can proudly announce their achievement while maintaining privacy.6. Social Interaction:  * Other users can view and interact with shared progress updates.  * The community can offer support and encouragement based on these privacy-preserving updates.Advantages of this approach:1. Privacy Protection: Progress can be shared without revealing specific weights.2. Motivation Maintenance: Being able to prove progress towards the goal can boost motivation.3. Social Support: Users can engage with a supportive community while maintaining privacy.4. Achievement Celebration: Users can proudly share their success when reaching their goal, without disclosing actual numbers.5. Simplicity: The information shared is easy to understand and relate to for other users.6. Trustworthiness: Zero-knowledge proofs ensure that achievements are verifiable without compromising privacy.This project caters to individuals who want to share their diet progress and achievements on social media but are hesitant to disclose their actual weight. By utilizing zero-knowledge proofs, users can effectively communicate their success, maintain accountability, and celebrate achievements within a supportive community, all while keeping their sensitive information private.

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CROSSVALUE Chain has become Xenea on July 2th. <h2>About Xenea</h2> The Xenea is an EVM-compatible blockchain with integrated sustainable on-chain storage, designed to realize the vision of tokenizing everything and enabling seamless value exchange. Since the data processed on NFTs tends to be large, it is typically stored on external storage rather than directly on a block. However, the persistence of NFT data depends on the storage method. This is also true for existing distributed storage. For example, data on IPFS hosted by a company depends on the length of time that company exists. Also, if the chain is hard forked, consistency of ownership cannot be guaranteed. This causes serious problems, especially for NFT assets. The Xenea addresses these issues by integrating an EVM-compliant blockchain with autonomous decentralized on-chain storage that guarantees data persistence. To ensure that assets can be inherited for a thousand years, the team took a no-compromise approach to the architecture. In developing the core architecture, the team is taking a peer-review approach, ensuring the robustness of the architecture from a computer science perspective through reviews by prestigious international societies, including IEEE.<h2> </h2><h2>Xeneaとは</h2> Xeneaは、あらゆるものをトークン化し、シームレスな価値交換を可能にするというビジョンを実現するために設計された、持続可能なオンチェーンストレージを統合したEVM互換ブロックチェーンです。 NFTで扱うデータは大きくなる傾向があるため、通常はブロックに直接格納するのではなく、外部ストレージに保管します。しかし、NFTのデータの持続性は保管方法に依存します。これは既存の分散型ストレージでも同様です。例えば、企業がホストするIPFS上のデータは、その企業の存続期間に依存します。また、チェーンがハードフォークすると、所有権の一貫性が保証できなくなります。これらは、特にNFT化された資産にとって深刻な問題を引き起こします。 Xeneaは、EVM互換のブロックチェーンと、データの持続性を保証する自律分散型のオンチェーンストレージを組み合わせることで、これらの問題に対処します。1000年先まで資産を継承可能にするため、チームはアーキテクチャに対する妥協を許さないアプローチを採用しています。コアアーキテクチャの開発では、ピアレビューアプローチを採用し、IEEEを含む権威ある国際学会のレビューを通じて、情報科学の観点からアーキテクチャの堅牢性を確保しています。

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