theSLAYER

Credits to @NinFanBoyFTW for the Hi-res scans

When you select Scan QR Code from your in-game menu, you can register Pokémon as Seen in your Pokédex.
Players can go to their registered Pokédex Entries, to share QR codes for other players to scan.

These codes were generated so that players can have them Seen in their Pokédex.
Can be useful for finding their habitats in the dex, or having them show up in GTS search function without having to type it's name.
Credits to BYF9 on Reddit for taking the time to snap various screenshots of the Gen 7 entries.

When you select Scan QR Code from your in-game menu, you can register Pokémon as Seen in your Pokédex.
Players can go to their registered Pokédex Entries, to share QR codes for other players to scan.

These codes were generated so that players can have them Seen in their Pokédex.
Can be useful for finding their habitats in the dex (if they are in the dex), or having them show up in GTS search function without having to type it's name.
Credits to SciresM for generating them.

As per the Tech Doc:
 

When Pokemon X & Y was released, a dedicated website for international players went live online, with the url www.pokemonxy.com.
However, with the website now redirecting to a generic page, the images might become lost to time.
As of writing, Japan's XY-individual site is still online (http://www.pokemon.co.jp/ex/xy/), but at some point it might go offline, so the images are archived as well. Additionally, certain XY-limited images were also included, for archiving sake.
The style of artwork I use for the Event Gallery was inspired by this splashed-style.
Apparently, the splash artwork in the background is slightly different between international and japanese versions.

International ver. VS Japanese ver.
These images can be downloaded together here .