Venture into 2025, where blockchain enables secure urban planning data sharing. Platforms like UrbanChain verify datasets, boosting collaboration by 25%. China’s CCIAPCB integrates AI, ensuring integrity. Smart contracts automate access, protecting privacy. Energy-intensive ledgers and interoperability issues limit scaling, while regulatory gaps persist. DeepSeek’s analytics enhance security, but talent shortages slow adoption. Stanford’s 2025 AI Index Report urges standardized protocols. Blockchain transforms cities, but scalable solutions are critical. #Blockchain #UrbanPlanning #DataSharing