Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"U",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"c844850f-b3a3-3216-a481-9205bb2110d0",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZTlmNmQyYzZkNTI4NWY4ODJhZTU1ZDFlOTFiOGY5ZWZkZmM5YjM3NzIwOGJmNGM4M2Y4OGRkMTU2NDE1ZSJ9fX0="}]}}}

API Usage

GET https://headdb.org/api/head/c844850f-b3a3-3216-a481-9205bb2110d0

{
  "name": "U",
  "uuid": "c844850f-b3a3-3216-a481-9205bb2110d0",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZTlmNmQyYzZkNTI4NWY4ODJhZTU1ZDFlOTFiOGY5ZWZkZmM5YjM3NzIwOGJmNGM4M2Y4OGRkMTU2NDE1ZSJ9fX0=",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/e9f6d2c6d5285f882ae55d1e91b8f9efdfc9b377208bf4c83f88dd156415e"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"U\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"c844850f-b3a3-3216-a481-9205bb2110d0\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZTlmNmQyYzZkNTI4NWY4ODJhZTU1ZDFlOTFiOGY5ZWZkZmM5YjM3NzIwOGJmNGM4M2Y4OGRkMTU2NDE1ZSJ9fX0=\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/c844850f-b3a3-3216-a481-9205bb2110d0