Seals is a mod that allows you display your biggest minecraft achievements all the time so other players can see. By completing specific advancements you will unlock seals that will display titles below your name. All the seals are configurable by editing a json files called "seals.json" in the config folder (in 1.19+ the seals are done through a datapack), examples can be found there.You can select which seal to display by opening the advancements gui and clicking on the seal.
