PaperMC fork with Sand Duping allowed!

Download

Leatest prebuilt jar from here

OR alternatively Compile Jar From Source the folowing way

Requirements: To compile Paper, you need JDK 8, maven, and an internet connection.

How to:

git clone https://github.com/YaCodesDevelopment/PaperMC-unpatch/

cd PaperMC-unpatch

./paper jar