Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"P",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"1780240a-d4dc-397a-8ce2-2429ffc68407",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjRiMjMxYThkNTU4NzBjZmI1YTlmNGU2NWRiMDZkZDdmOGUzNDI4MmYxNDE2Zjk1ODc4YjE5YWNjMzRhYzk1In19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/1780240a-d4dc-397a-8ce2-2429ffc68407

{
  "name": "P",
  "uuid": "1780240a-d4dc-397a-8ce2-2429ffc68407",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjRiMjMxYThkNTU4NzBjZmI1YTlmNGU2NWRiMDZkZDdmOGUzNDI4MmYxNDE2Zjk1ODc4YjE5YWNjMzRhYzk1In19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/64b231a8d55870cfb5a9f4e65db06dd7f8e34282f1416f95878b19acc34ac95"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"P\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"1780240a-d4dc-397a-8ce2-2429ffc68407\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjRiMjMxYThkNTU4NzBjZmI1YTlmNGU2NWRiMDZkZDdmOGUzNDI4MmYxNDE2Zjk1ODc4YjE5YWNjMzRhYzk1In19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/1780240a-d4dc-397a-8ce2-2429ffc68407