SIGNED: Smart cIty diGital twiN vErifiable Data Framework

Smart city digital twins can provide useful insights by making effective use of multi disciplinary urban data from diverse sources. Whilst these new information that helps cities in decision making, verifying the authenticity, integrity, traceability and ownership across various functional units have become critical characteristics to ensure is an authentic trustworthy source. However, are rarely considered a twin ecosystem. In this research we introduce novel framework, namely, ‘SIGNED: cIty diGital twiN vErifiable Data framework’ designed on basis ownership, selective disclosure verifiability principles. Using Verifiable Credentials, SIGNED ensures verifiably i.e., it covers provenance, transparency, reliability through verifiable presentation. A proof concept evaluated based smart water management case demonstrate effectiveness securing exchange multiple units. The proof-of-concept demonstrates successfully allows trusted manner at negilgible performance cost, thus enhancing security alleviating privacy issues when sharing between city.