Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"O",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"cbb84f81-01f9-396e-b58c-5a5fafed8393",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvODg0NDU0NjZiZGM1YWQ1YmNlYTgyMjM5YzRlMWI1MTBmNmVhNTI2MmQ4MmQ4YTk2ZDcyOTFjMzQyZmI4OSJ9fX0="}]}}}

API Usage

GET https://headdb.org/api/head/cbb84f81-01f9-396e-b58c-5a5fafed8393

{
  "name": "O",
  "uuid": "cbb84f81-01f9-396e-b58c-5a5fafed8393",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvODg0NDU0NjZiZGM1YWQ1YmNlYTgyMjM5YzRlMWI1MTBmNmVhNTI2MmQ4MmQ4YTk2ZDcyOTFjMzQyZmI4OSJ9fX0=",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/88445466bdc5ad5bcea82239c4e1b510f6ea5262d82d8a96d7291c342fb89"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"O\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"cbb84f81-01f9-396e-b58c-5a5fafed8393\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvODg0NDU0NjZiZGM1YWQ1YmNlYTgyMjM5YzRlMWI1MTBmNmVhNTI2MmQ4MmQ4YTk2ZDcyOTFjMzQyZmI4OSJ9fX0=\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/cbb84f81-01f9-396e-b58c-5a5fafed8393