PROTOS AI Agency is a leading AI research and development firm based in Greece, focusing on developing sovereign AI solutions for public sector, critical infrastructure, and social impact initiatives. As a signatory of the EU AI Pact, a registered EU expert, and an active AI researcher with peer-reviewed publications, we connect advanced AI research to practical applications. Our work is centered on three main areas: 1. **Public Sector & Critical Infrastructure** - We create essential AI systems for government ministries, law enforcement, and public services, such as ATHENA (a multilingual AI reception system), MATIA (AI-enabled body cameras for police), and GEO (a geospatial intelligence platform). 2. **Social Impact & Accessibility** - We develop research-driven assistive technologies like OpsisVision, a multimodal AI assistance system for the blind and visually impaired. This system, published in peer-reviewed journals, uses a hybrid edge-cloud architecture to ensure affordability (€470-2,200 compared to commercial systems priced at €3,500-6,000). 3. **Agricultural & Environmental AI** - Our Green Horizon initiative is a multimodal satellite monitoring system that aids in agricultural compliance and fraud detection. This system has been presented to the Greek Ministry of Agriculture and submitted to the European Union. It effectively integrates Copernicus Sentinel-2 data with national registries to achieve over 95% accuracy in crop classification and land-use verification. Differentiating us from typical AI agencies, we combine academic rigor with practical application. Our peer-reviewed research, published on platforms like Authorea and Zenodo, informs the development of every solution we provide. Each system is crafted to comply with GDPR and the EU AI Act, allowing on-premise deployment while ensuring full data sovereignty. With over four years of experience in OpenAI, more than 3,000 applications deployed, and ongoing contributions to European AI policy discussions, we are redefining how institutions utilize AI while upholding transparency, accountability, and ethical standards.