Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"J",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"00118809-4e56-34e7-b0e7-873c6f4853cd",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYzU4NDU2Y2Q5YmI4YTdlOTc4NTkxYWUwY2IyNmFmMWFhZGFkNGZhN2ExNjcyNWIyOTUxNDVlMDliZWQ4MDY0In19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/00118809-4e56-34e7-b0e7-873c6f4853cd

{
  "name": "J",
  "uuid": "00118809-4e56-34e7-b0e7-873c6f4853cd",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYzU4NDU2Y2Q5YmI4YTdlOTc4NTkxYWUwY2IyNmFmMWFhZGFkNGZhN2ExNjcyNWIyOTUxNDVlMDliZWQ4MDY0In19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/c58456cd9bb8a7e978591ae0cb26af1aadad4fa7a16725b295145e09bed8064"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"J\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"00118809-4e56-34e7-b0e7-873c6f4853cd\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYzU4NDU2Y2Q5YmI4YTdlOTc4NTkxYWUwY2IyNmFmMWFhZGFkNGZhN2ExNjcyNWIyOTUxNDVlMDliZWQ4MDY0In19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/00118809-4e56-34e7-b0e7-873c6f4853cd