The problem Bloodchain solves

Transparency: It provides donors with a verifiable record of their donations through NFTs, ensuring transparency in how their donated blood is used.
Trust and Engagement: By allowing donors to track when and how their blood is used, the app fosters trust and encourages more people to donate regularly.
Data Integrity: Storing donation and usage records on the blockchain ensures that the data is secure, tamper-proof, and easily accessible.
Recognition: Donors receive digital recognition for their contributions, which could incentivize continued participation.

Challenges we ran into

Blood Donors' Proof Acceptance: Overcoming skepticism regarding the adoption of NFTs as valid proof of donation.
Data Privacy for Donors: Ensuring compliance with privacy regulations while maintaining transparency.
Commercialization: Balancing the non-profit mission with potential monetization strategies.
Poor Documentation from Masverse: Navigating implementation challenges due to inadequate documentation.