1710 Dupe Work: Minecraft

For a visual walkthrough of the classic 1.7.10 duplication methods: Minecraft 1.7.10 Duplication Glitch Tutorial Jamacanbacn YouTube• Aug 8, 2014 7.10 modpacks like Tekkit or FTB?

: Most modern servers running 1.7.10 (like those using Spigot or Paper) have built-in patches to prevent these exploits. Risk of Corruption minecraft 1710 dupe work

In 1.7.10, the server saved player data (inventory, position, ender chests) . This meant there was a tiny delay—usually 200-500 milliseconds—between a player logging out and the server writing their data to the hard drive. For a visual walkthrough of the classic 1

In a standard setup, a player would rig a piston to push a chest. As the piston extended, the game calculated the movement of the block. If a hopper was placed beneath the chest, attempting to pull items out during the exact tick the piston moved the block, the game would struggle to resolve the item location. The hopper would pull the items into its inventory, but the piston movement would cause the chest entity to reset or move without clearing its internal inventory data. Consequently, the items would duplicate—existing both in the hopper and back in the moved chest. This exploited the lack of atomic transaction handling in the game's tile entity code. This meant there was a tiny delay—usually 200-500