Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"I",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"fa66e7c3-47fd-370a-a673-a3a2a84b1e63",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNDI0NjMyM2M5ZmIzMTkzMjZlZTJiZjNmNWI2M2VjM2Q5OWRmNzZhMTI0MzliZjBiNGMzYWIzMmQxM2ZkOSJ9fX0="}]}}}

API Usage

GET https://headdb.org/api/head/fa66e7c3-47fd-370a-a673-a3a2a84b1e63

{
  "name": "I",
  "uuid": "fa66e7c3-47fd-370a-a673-a3a2a84b1e63",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNDI0NjMyM2M5ZmIzMTkzMjZlZTJiZjNmNWI2M2VjM2Q5OWRmNzZhMTI0MzliZjBiNGMzYWIzMmQxM2ZkOSJ9fX0=",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/4246323c9fb319326ee2bf3f5b63ec3d99df76a12439bf0b4c3ab32d13fd9"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"I\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"fa66e7c3-47fd-370a-a673-a3a2a84b1e63\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNDI0NjMyM2M5ZmIzMTkzMjZlZTJiZjNmNWI2M2VjM2Q5OWRmNzZhMTI0MzliZjBiNGMzYWIzMmQxM2ZkOSJ9fX0=\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/fa66e7c3-47fd-370a-a673-a3a2a84b1e63