diff --git a/db/migrate/20220611174308_remove_reading_to_arduino_association.rb b/db/migrate/20220611174308_remove_reading_to_arduino_association.rb
index 69f489d..cd4618b 100644
--- a/db/migrate/20220611174308_remove_reading_to_arduino_association.rb
+++ b/db/migrate/20220611174308_remove_reading_to_arduino_association.rb
@@ -4,7 +4,7 @@
 # lectura y sensado.
 class RemoveReadingToArduinoAssociation < ActiveRecord::Migration[6.1]
   def change
-    add_belongs_to :sensors, :reading, index: true
+    add_column :sensors, :reading_id, :uuid, index: true
     remove_belongs_to :arduinos, :reading, index: true
   end
 end
diff --git a/db/schema.rb b/db/schema.rb
index fd17912..2f65c82 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,20 +10,46 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_12_06_224353) do
+ActiveRecord::Schema.define(version: 2022_06_11_174308) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
 
+  create_table "active_storage_attachments", force: :cascade do |t|
+    t.string "name", null: false
+    t.string "record_type", null: false
+    t.bigint "record_id", null: false
+    t.bigint "blob_id", null: false
+    t.datetime "created_at", null: false
+    t.index ["blob_id"], name: "index_active_storage_attachments_on_blob_id"
+    t.index ["record_type", "record_id", "name", "blob_id"], name: "index_active_storage_attachments_uniqueness", unique: true
+  end
+
+  create_table "active_storage_blobs", force: :cascade do |t|
+    t.string "key", null: false
+    t.string "filename", null: false
+    t.string "content_type"
+    t.text "metadata"
+    t.string "service_name", null: false
+    t.bigint "byte_size", null: false
+    t.string "checksum", null: false
+    t.datetime "created_at", null: false
+    t.index ["key"], name: "index_active_storage_blobs_on_key", unique: true
+  end
+
+  create_table "active_storage_variant_records", force: :cascade do |t|
+    t.bigint "blob_id", null: false
+    t.string "variation_digest", null: false
+    t.index ["blob_id", "variation_digest"], name: "index_active_storage_variant_records_uniqueness", unique: true
+  end
+
   create_table "arduinos", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
     t.uuid "raspberry_id"
-    t.uuid "transaction_id"
-    t.integer "local_id"
+    t.string "local_id"
     t.index ["raspberry_id"], name: "index_arduinos_on_raspberry_id"
-    t.index ["transaction_id"], name: "index_arduinos_on_transaction_id"
   end
 
   create_table "blazer_audits", force: :cascade do |t|
@@ -82,26 +108,23 @@ ActiveRecord::Schema.define(version: 2021_12_06_224353) do
     t.index ["creator_id"], name: "index_blazer_queries_on_creator_id"
   end
 
+  create_table "public_keys", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.uuid "raspberry_id"
+    t.string "content", null: false
+    t.index ["raspberry_id"], name: "index_public_keys_on_raspberry_id"
+  end
+
   create_table "raspberries", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
     t.string "name"
-    t.string "public_key"
+    t.string "serial_number"
+    t.index ["serial_number"], name: "index_raspberries_on_serial_number", unique: true
   end
 
-  create_table "sensors", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
-    t.datetime "created_at", precision: 6, null: false
-    t.datetime "updated_at", precision: 6, null: false
-    t.uuid "arduino_id"
-    t.datetime "timestamp"
-    t.string "type"
-    t.integer "value"
-    t.string "unit"
-    t.index ["arduino_id"], name: "index_sensors_on_arduino_id"
-    t.index ["type"], name: "index_sensors_on_type"
-  end
-
-  create_table "transactions", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+  create_table "readings", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
     t.uuid "raspberry_id"
@@ -112,7 +135,28 @@ ActiveRecord::Schema.define(version: 2021_12_06_224353) do
     t.string "sample"
     t.string "storage"
     t.string "signature"
-    t.index ["raspberry_id"], name: "index_transactions_on_raspberry_id"
+    t.text "raw_transaction"
+    t.boolean "verified", default: false
+    t.index ["raspberry_id"], name: "index_readings_on_raspberry_id"
+  end
+
+  create_table "sensors", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.uuid "arduino_id"
+    t.string "local_type"
+    t.decimal "value", precision: 10
+    t.string "unit"
+    t.integer "error"
+    t.uuid "reading_id"
+    t.index ["arduino_id"], name: "index_sensors_on_arduino_id"
+    t.index ["local_type"], name: "index_sensors_on_local_type"
+  end
+
+  create_table "sites", force: :cascade do |t|
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.string "title", null: false
   end
 
   create_table "users", force: :cascade do |t|
@@ -126,9 +170,13 @@ ActiveRecord::Schema.define(version: 2021_12_06_224353) do
     t.datetime "locked_at"
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
+    t.bigint "created_by_id"
+    t.index ["created_by_id"], name: "index_users_on_created_by_id"
     t.index ["email"], name: "index_users_on_email", unique: true
     t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
     t.index ["unlock_token"], name: "index_users_on_unlock_token", unique: true
   end
 
+  add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
 end