Chunkban

A chunkban is an exploit where player(s) are kicked consistently from the server due to an error involving glitched chunks. This is commonly linked to collision corruptions or chunks containing excess data.

Methods
Note: All methods listed are patched on 2b2t as of 20th April 2020


 * Sign - This method consisted of filling a chunk with 2MB of sign text, this is by far the most efficient chunkban method, therefore patched on most servers
 * 7-Layer - Consisting of the illegal cyto player heads, these could be placed in large quantities in a chunk. Taking around 2,000 to ban a chunk
 * Banner - Using data rich banners, a chunk can be filled up and banned with around 20-30 Layers
 * Furnace - This brute force method somehow got under the threshold of actually fitting into a chunk, it requires 44,000 furnaces and cannot fit into (2b2t's) nether
 * E-chest - a slight improvement on furnaces, but a pain to build with. Ender Chests are only useful when duped on mass and are harder to grief.
 * Enchanting Table - Very rarely used due to the frame rate issues when building, does not offer much significance over furnaces and E-chests
 * Classified - Experimental method that works in nether, can be set up with 1 person in around an hour

History
Claims of chunkban usage go back far since it has been a bug since the beginning of the game, so feel free to add your experiences here.

Early 2019 - Sign chunkbans were used around nether 0 0, along with the slogan "spawn's closed". This was patched by Spigot shortly after.

Nov 2019 - The Book Club used banner and 7-layer chunkbans throughout nether spawn to wreak havoc on queue times and new players. Use was discontinued after Hausemaster patched illegals and NoServerNovember was over.

April 2020 - The Bakery used furnace and e-chest chunkbans at key locations in the overworld to reduce queue. These had almost the same level of effectiveness as the much more compact patched designs.
 * 7th - 12th, Chunkbanning the comet at Ziggy town with a furnace chunkban.
 * 17th - 20th, Chunkbanning 0, 0 (e-chest), causing an amount of spawnfags and yesterfags to get banned.

April 20th 2020 - Hausemaster patches chunkbans though a rework of chunk loading.

June 2020 - Redstoner, Steve3 and ManaFilms discover a bypass, it is in experimentation and could be deployed on highways to ban dozens of players