diff --git a/.gitignore b/.gitignore
index 6e1f866..0d2a481 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 priv
 
 /client/oracle_client/burrito_out/
+.tool-versions
diff --git a/oraclex/config/config.exs b/oraclex/config/config.exs
index 9a6854a..2a012ad 100644
--- a/oraclex/config/config.exs
+++ b/oraclex/config/config.exs
@@ -10,6 +10,11 @@ import Config
 config :oraclex,
   ecto_repos: [Oraclex.Repo]
 
+# Configures the pk type for migrations
+config :oraclex, Oraclex.Repo,
+  migration_primary_key: [type: :uuid],
+  migration_timestamps: [type: :naive_datetime_usec]
+
 # Configures the endpoint
 config :oraclex, OraclexWeb.Endpoint,
   url: [host: "localhost"],
diff --git a/oraclex/coveralls.json b/oraclex/coveralls.json
new file mode 100644
index 0000000..b82c617
--- /dev/null
+++ b/oraclex/coveralls.json
@@ -0,0 +1,23 @@
+{
+  "treat_no_relevant_lines_as_covered": true,
+  "coverage_options": {
+    "output_dir": "priv/static/doc/cover/",
+    "minimum_coverage": 85
+  },
+  "terminal_options": {
+    "file_column_width": 60
+  },
+  "skip_files": [
+    "lib/oraclex/application.ex",
+    "lib/oraclex/mailer.ex",
+    "lib/oraclex/repo.ex",
+    "lib/oraclex/schema.ex",
+    "lib/oraclex_web.ex",
+    "lib/oraclex_web/endpoint.ex",
+    "lib/oraclex_web/gettext.ex",
+    "lib/oraclex_web/router.ex",
+    "lib/oraclex_web/telemetry.ex",
+    "lib/oraclex_web/views",
+    "test"
+  ]
+}
diff --git a/oraclex/lib/oraclex/application.ex b/oraclex/lib/oraclex/application.ex
index ce1e8ff..d89f84f 100644
--- a/oraclex/lib/oraclex/application.ex
+++ b/oraclex/lib/oraclex/application.ex
@@ -9,7 +9,7 @@ defmodule Oraclex.Application do
   def start(_type, _args) do
     children = [
       # Start the Ecto repository
-      # Oraclex.Repo,
+      Oraclex.Repo,
       # Start the Telemetry supervisor
       OraclexWeb.Telemetry,
       # Start the PubSub system
diff --git a/oraclex/lib/oraclex/repo.ex b/oraclex/lib/oraclex/repo.ex
index 3aba83c..35b47a3 100644
--- a/oraclex/lib/oraclex/repo.ex
+++ b/oraclex/lib/oraclex/repo.ex
@@ -1,5 +1,5 @@
-# defmodule Oraclex.Repo do
-#   use Ecto.Repo,
-#     otp_app: :oraclex,
-#     adapter: Ecto.Adapters.Postgres
-# end
+defmodule Oraclex.Repo do
+  use Ecto.Repo,
+    otp_app: :oraclex,
+    adapter: Ecto.Adapters.Postgres
+end
diff --git a/oraclex/lib/oraclex/schema.ex b/oraclex/lib/oraclex/schema.ex
new file mode 100644
index 0000000..ea965d0
--- /dev/null
+++ b/oraclex/lib/oraclex/schema.ex
@@ -0,0 +1,16 @@
+defmodule Oraclex.Schema do
+  @moduledoc false
+
+  defmacro __using__(_) do
+    quote do
+      use Ecto.Schema
+
+      import Ecto.Changeset
+
+      alias Rigging.Repo
+
+      @timestamps_opts [type: :naive_datetime_usec]
+      @type t :: %__MODULE__{}
+    end
+  end
+end
diff --git a/oraclex/lib/oraclex_system/debug.ex b/oraclex/lib/oraclex_system/debug.ex
new file mode 100644
index 0000000..3dbcdf0
--- /dev/null
+++ b/oraclex/lib/oraclex_system/debug.ex
@@ -0,0 +1,161 @@
+defmodule Debug do
+  @moduledoc """
+  Debugging functions for making life easier.
+  """
+
+  @width 80
+  @color 255
+  @line_color 238
+  @time_color 247
+  @syntax_colors [
+    atom: :cyan,
+    binary: :white,
+    boolean: :magenta,
+    list: :white,
+    map: :white,
+    nil: :magenta,
+    number: :yellow,
+    regex: :light_red,
+    reset: :yellow,
+    string: :green,
+    tuple: :white
+  ]
+
+  @doc """
+  Prints `input` in console within a formatted frame.
+
+  Returs `input`.
+
+  It can recieve a keyword list as options.
+
+  ## Options
+    * `label`: A string to print on the header for identification purposes.
+    * `color`: Color of the label if its given. Values between 0-255.
+    * `width`: Number of char width of the output.
+    * `line_color`: Color of the header and footer lines. Values between 0-255.
+    * `time_color`: Color of the execution time. Values between 0-255.
+    * `syntax_colors`: Keyword list for term syntax color.
+      
+      Keys: `:atom`, `:binary`, `:boolean`, `:list`, `:map`, `:nil`, `:number`, `:regex`, `:reset`, `:string`, `:tuple`.
+      
+      Values: `:black`, `:red`, `:yellow`, `:green`, `:cyan`, `:blue`, `:magenta`, `:white`, `:light_black`, `:light_red`, `:light_yellow`, `:light_green`, `:light_cyan`, `:light_blue`, `:light_magenta`, `:light_white`.
+
+  ### 256 color palette
+
+  <img title="256 color palette" alt="palette image" src="assets/256_colors.png">
+
+  ##  Example
+      iex> "Lorem-Ipsum"
+      ...> |> String.split("-")
+      ...> |> RiggingSystem.Debug.log(label: "Split return")
+      ...> |> Enum.join()
+      ...> |> String.downcase()
+      Split return -------------------------------------- 2022-03-10 - 00:47:07.523741
+      ["Lorem", "Ipsum"]
+      ------------------------------------------------------------------ Rigging v0.0.0
+      "loremipsum" # This is the actual pipeline return, besides de console print.
+  """
+  @spec log(input :: any, opt :: keyword) :: any
+  def log(input, opt \\ []) do
+    if Mix.env() in [:dev, :test] do
+      [
+        header(opt),
+        line(),
+        inspect(
+          input,
+          syntax_colors: Keyword.get(opt, :syntax_colors, @syntax_colors),
+          pretty: true,
+          width: Keyword.get(opt, :width, @width)
+        ),
+        line(),
+        footer(opt),
+        line()
+      ]
+      |> Enum.join()
+      |> IO.write()
+    end
+
+    input
+  end
+
+  # === Private ================================================================
+
+  defp line(), do: "\n"
+
+  defp header(opt) when is_list(opt) do
+    %{
+      year: year,
+      month: month,
+      day: day,
+      hour: hour,
+      minute: minute,
+      second: second,
+      microsecond: {microsecond, 6}
+    } = NaiveDateTime.utc_now()
+
+    label = Keyword.get(opt, :label)
+    width = Keyword.get(opt, :width, @width)
+    c0 = Keyword.get(opt, :color, "#{@color}")
+    c1 = Keyword.get(opt, :line_color, "#{@line_color}")
+    c2 = Keyword.get(opt, :time_color, "#{@time_color}")
+
+    date =
+      "#{year}"
+      |> Kernel.<>("-")
+      |> Kernel.<>(String.pad_leading("#{month}", 2, "0"))
+      |> Kernel.<>("-")
+      |> Kernel.<>(String.pad_leading("#{day}", 2, "0"))
+
+    time =
+      "#{hour}"
+      |> String.pad_leading(2, "0")
+      |> Kernel.<>(":")
+      |> Kernel.<>(String.pad_leading("#{minute}", 2, "0"))
+      |> Kernel.<>(":")
+      |> Kernel.<>(String.pad_leading("#{second}", 2, "0"))
+      |> Kernel.<>(".")
+      |> Kernel.<>(String.pad_leading("#{microsecond}", 6, "0"))
+
+    label = if !label, do: "", else: "#{label} "
+
+    separation =
+      width
+      |> Kernel.-(String.length(label))
+      |> Kernel.-(String.length(date))
+      |> Kernel.-(String.length(time))
+      |> Kernel.-(4)
+
+    reset = "\e[0m"
+    label = "#{reset}\e[1m\e[38;5;#{c0}m#{label}#{reset}\e[38;5;#{c1}m"
+    date = "#{reset}\e[38;5;#{c2}m#{date}#{reset}\e[38;5;#{c1}m"
+    time = "#{reset}\e[38;5;#{c2}m#{time}#{reset}\e[38;5;#{c1}m"
+
+    "\e[38;5;#{c1}m"
+    |> Kernel.<>("#{label}")
+    |> Kernel.<>(String.duplicate("─", separation))
+    |> Kernel.<>(" #{date} - #{time}")
+    |> Kernel.<>(reset)
+  end
+
+  defp footer(opt) when is_list(opt) do
+    width = Keyword.get(opt, :width, @width)
+    c1 = Keyword.get(opt, :line_color, "#{@line_color}")
+    service = Mix.Project.config()[:app]
+    version = Mix.Project.config()[:version]
+
+    product =
+      service
+      |> Atom.to_string()
+      |> String.split("_")
+      |> Enum.map(fn e -> String.capitalize(e) end)
+      |> Enum.join()
+
+    sufix = " #{product} v#{version}"
+    separation = width - String.length(sufix)
+
+    "\e[38;5;#{c1}m"
+    |> Kernel.<>(String.duplicate("─", separation))
+    |> Kernel.<>(sufix)
+    |> Kernel.<>("\e[0m")
+  end
+end
diff --git a/oraclex/mix.exs b/oraclex/mix.exs
index 35d18dd..8975a58 100644
--- a/oraclex/mix.exs
+++ b/oraclex/mix.exs
@@ -10,7 +10,14 @@ defmodule Oraclex.MixProject do
       compilers: Mix.compilers(),
       start_permanent: Mix.env() == :prod,
       aliases: aliases(),
-      deps: deps()
+      deps: deps(),
+      test_coverage: [tool: ExCoveralls],
+      preferred_cli_env: [
+        coveralls: :test,
+        "coveralls.detail": :test,
+        "coveralls.post": :test,
+        "coveralls.html": :test
+      ]
     ]
   end
 
@@ -33,6 +40,7 @@ defmodule Oraclex.MixProject do
   # Type `mix help deps` for examples and options.
   defp deps do
     [
+      # Default dependencies
       {:phoenix, "~> 1.6.15"},
       {:phoenix_ecto, "~> 4.4"},
       {:ecto_sql, "~> 3.6"},
@@ -49,9 +57,12 @@ defmodule Oraclex.MixProject do
       {:gettext, "~> 0.18"},
       {:jason, "~> 1.2"},
       {:plug_cowboy, "~> 2.5"},
+      # Extended dependencies
       {:poison, "~> 5.0"},
       {:bitcoinex,
-       github: "SachinMeier/bitcoinex", branch: "sachin--add-key-only-taproot-script-creation"}
+       github: "SachinMeier/bitcoinex", branch: "sachin--add-key-only-taproot-script-creation"},
+      {:excoveralls, "~> 0.16.0", only: :test},
+      {:mock, "~> 0.3.7", only: :test}
     ]
   end
 
diff --git a/oraclex/mix.lock b/oraclex/mix.lock
index ed9e594..a16c307 100644
--- a/oraclex/mix.lock
+++ b/oraclex/mix.lock
@@ -12,6 +12,7 @@
   "ecto": {:hex, :ecto, "3.9.4", "3ee68e25dbe0c36f980f1ba5dd41ee0d3eb0873bccae8aeaf1a2647242bffa35", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "de5f988c142a3aa4ec18b85a4ec34a2390b65b24f02385c1144252ff6ff8ee75"},
   "ecto_sql": {:hex, :ecto_sql, "3.9.2", "34227501abe92dba10d9c3495ab6770e75e79b836d114c41108a4bf2ce200ad5", [:mix], [{:db_connection, "~> 2.4.1 or ~> 2.5", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.9.2", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.6.0", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.16.0 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.1 or ~> 2.2", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "1eb5eeb4358fdbcd42eac11c1fbd87e3affd7904e639d77903c1358b2abd3f70"},
   "esbuild": {:hex, :esbuild, "0.6.1", "a774bfa7b4512a1211bf15880b462be12a4c48ed753a170c68c63b2c95888150", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}], "hexpm", "569f7409fb5a932211573fc20e2a930a0d5cf3377c5b4f6506c651b1783a1678"},
+  "excoveralls": {:hex, :excoveralls, "0.16.0", "41f4cfbf7caaa3bc2cf411db6f89c1f53afedf0f1fe8debac918be1afa19c668", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "401205356482ab99fb44d9812cd14dd83b65de8e7ae454697f8b34ba02ecd916"},
   "expo": {:hex, :expo, "0.3.0", "13127c1d5f653b2927f2616a4c9ace5ae372efd67c7c2693b87fd0fdc30c6feb", [:mix], [], "hexpm", "fb3cd4bf012a77bc1608915497dae2ff684a06f0fa633c7afa90c4d72b881823"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
   "floki": {:hex, :floki, "0.34.0", "002d0cc194b48794d74711731db004fafeb328fe676976f160685262d43706a8", [:mix], [], "hexpm", "9c3a9f43f40dde00332a589bd9d389b90c1f518aef500364d00636acc5ebc99c"},
@@ -19,9 +20,11 @@
   "hackney": {:hex, :hackney, "1.18.1", "f48bf88f521f2a229fc7bae88cf4f85adc9cd9bcf23b5dc8eb6a1788c662c4f6", [:rebar3], [{:certifi, "~> 2.9.0", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~> 6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~> 1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~> 1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~> 1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~> 0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "a4ecdaff44297e9b5894ae499e9a070ea1888c84afdd1fd9b7b2bc384950128e"},
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~> 0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
   "jason": {:hex, :jason, "1.4.0", "e855647bc964a44e2f67df589ccf49105ae039d4179db7f6271dfd3843dc27e6", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "79a3791085b2a0f743ca04cec0f7be26443738779d09302e01318f97bdb82121"},
+  "meck": {:hex, :meck, "0.9.2", "85ccbab053f1db86c7ca240e9fc718170ee5bda03810a6292b5306bf31bae5f5", [:rebar3], [], "hexpm", "81344f561357dc40a8344afa53767c32669153355b626ea9fcbc8da6b3045826"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mime": {:hex, :mime, "2.0.3", "3676436d3d1f7b81b5a2d2bd8405f412c677558c81b1c92be58c00562bb59095", [:mix], [], "hexpm", "27a30bf0db44d25eecba73755acf4068cbfe26a4372f9eb3e4ea3a45956bff6b"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},
+  "mock": {:hex, :mock, "0.3.7", "75b3bbf1466d7e486ea2052a73c6e062c6256fb429d6797999ab02fa32f29e03", [:mix], [{:meck, "~> 0.9.2", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm", "4da49a4609e41fd99b7836945c26f373623ea968cfb6282742bcb94440cf7e5c"},
   "parse_trans": {:hex, :parse_trans, "3.3.1", "16328ab840cc09919bd10dab29e431da3af9e9e7e7e6f0089dd5a2d2820011d8", [:rebar3], [], "hexpm", "07cd9577885f56362d414e8c4c4e6bdf10d43a8767abb92d24cbe8b24c54888b"},
   "phoenix": {:hex, :phoenix, "1.6.15", "0a1d96bbc10747fd83525370d691953cdb6f3ccbac61aa01b4acb012474b047d", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 2.0", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:phoenix_view, "~> 1.0 or ~> 2.0", [hex: :phoenix_view, repo: "hexpm", optional: false]}, {:plug, "~> 1.10", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 2.2", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:plug_crypto, "~> 1.2", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "d70ab9fbf6b394755ea88b644d34d79d8b146e490973151f248cacd122d20672"},
   "phoenix_ecto": {:hex, :phoenix_ecto, "4.4.0", "0672ed4e4808b3fbed494dded89958e22fb882de47a97634c0b13e7b0b5f7720", [:mix], [{:ecto, "~> 3.3", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.14.2 or ~> 3.0", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.9", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "09864e558ed31ee00bd48fcc1d4fc58ae9678c9e81649075431e69dbabb43cc1"},
diff --git a/oraclex/test/oraclex/contract_test.exs b/oraclex/test/oraclex/contract_test.exs
index 8786abf..318fdac 100644
--- a/oraclex/test/oraclex/contract_test.exs
+++ b/oraclex/test/oraclex/contract_test.exs
@@ -1,25 +1,25 @@
 defmodule Oraclex.ContractTest do
-  use ExUnit.Case
-  doctest Oraclex.ContractTest
+  # use ExUnit.Case
+  # doctest Oraclex.ContractTest
 
-  alias Oraclex.Contract
+  # alias Oraclex.Contract
 
 
-  describe "contract_id" do
+  # describe "contract_id" do
 
-    test "calculate temp_contract_id" do
+  #   test "calculate temp_contract_id" do
 
-    end
+  #   end
 
 
-    test "calculate contract_id" do
-      filename = "dlcspec_vectors/contract_id_test.json"
+  #   test "calculate contract_id" do
+  #     filename = "dlcspec_vectors/contract_id_test.json"
 
-      {:ok, data} = File.read(filename)
-      {:ok, tests} = Poison.decode(data)
+  #     {:ok, data} = File.read(filename)
+  #     {:ok, tests} = Poison.decode(data)
 
 
-    end
-  end
+  #   end
+  # end
 
 end
diff --git a/oraclex/test/oraclex_system/debug_test.exs b/oraclex/test/oraclex_system/debug_test.exs
new file mode 100644
index 0000000..4ec8b64
--- /dev/null
+++ b/oraclex/test/oraclex_system/debug_test.exs
@@ -0,0 +1,20 @@
+defmodule OraclexSystem.DebugTest do
+  use Oraclex.DataCase
+
+  import Mock
+
+  describe "[unit] log/2" do
+    @tag :unit
+    test "prints the input on console returns the input" do
+      with_mocks [
+        {Mix, [:passthrough], env: fn -> :dev end},
+        {IO, [:passthrough], write: fn _ -> :ok end}
+      ] do
+        input = true
+        result = Debug.log(input)
+
+        assert result === input
+      end
+    end
+  end
+end