custom_mc_advancements/data/canopy/advancements/the_prized_sed.json

{
    "display": {
        "icon": {
            "item": "minecraft:bucket"
        },
        "title": "The Prized Sed",
        "description": "A cup of the most sought after sed on the server, won from a community event.",
        "frame": "challenge",
        "announce_to_chat": true
    },
    "parent": "canopy:root",
    "criteria": {
        "get_award": {
            "trigger": "minecraft:impossible"
            }
        }
}