# Copyright Protection Based on Zero Watermarking and Blockchain for Vector Maps

> Research article (ISPRS International Journal of Geo-Information, 2021) · cited 42× · AI/ML

**Wikidata**: [openalex:W3159591730](https://www.wikidata.org/wiki/openalex:W3159591730)  
**Source**: https://4ort.xyz/entity/copyright-protection-based-on-zero-watermarking-and-blockchain-for-vector-maps