Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"S",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"fbefded6-5e04-3028-b7c3-36ebe8577628",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYjY1NzJlNjU1NzI1ZDc4Mzc1YTk4MTdlYjllZThiMzc4MjljYTFmZWE5M2I2MDk1Y2M3YWExOWU1ZWFjIn19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/fbefded6-5e04-3028-b7c3-36ebe8577628

{
  "name": "S",
  "uuid": "fbefded6-5e04-3028-b7c3-36ebe8577628",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYjY1NzJlNjU1NzI1ZDc4Mzc1YTk4MTdlYjllZThiMzc4MjljYTFmZWE5M2I2MDk1Y2M3YWExOWU1ZWFjIn19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/b6572e655725d78375a9817eb9ee8b37829ca1fea93b6095cc7aa19e5eac"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"S\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"fbefded6-5e04-3028-b7c3-36ebe8577628\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYjY1NzJlNjU1NzI1ZDc4Mzc1YTk4MTdlYjllZThiMzc4MjljYTFmZWE5M2I2MDk1Y2M3YWExOWU1ZWFjIn19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/fbefded6-5e04-3028-b7c3-36ebe8577628