Details - HeadDB

Skull

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"Skull",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"d3122d7a-e34f-3e9a-8760-7c0bb1c72b86",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTFmNTRmZjliYjQyODUxOTEyYWE4N2ExYmRhNWI3Y2Q5ODE0Y2NjY2ZiZTIyNWZkZGE4ODdhZDYxODBkOSJ9fX0="}]}}}

API Usage

GET https://headdb.org/api/head/d3122d7a-e34f-3e9a-8760-7c0bb1c72b86

{
  "name": "Skull",
  "uuid": "d3122d7a-e34f-3e9a-8760-7c0bb1c72b86",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTFmNTRmZjliYjQyODUxOTEyYWE4N2ExYmRhNWI3Y2Q5ODE0Y2NjY2ZiZTIyNWZkZGE4ODdhZDYxODBkOSJ9fX0=",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/11f54ff9bb42851912aa87a1bda5b7cd9814ccccfbe225fdda887ad6180d9"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"Skull\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"d3122d7a-e34f-3e9a-8760-7c0bb1c72b86\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvMTFmNTRmZjliYjQyODUxOTEyYWE4N2ExYmRhNWI3Y2Q5ODE0Y2NjY2ZiZTIyNWZkZGE4ODdhZDYxODBkOSJ9fX0=\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/d3122d7a-e34f-3e9a-8760-7c0bb1c72b86