diff --git a/apps/block_scout_web/assets/__tests__/pages/address.js b/apps/block_scout_web/assets/__tests__/pages/address.js
index fe6506e22b..5e87b5b73d 100644
--- a/apps/block_scout_web/assets/__tests__/pages/address.js
+++ b/apps/block_scout_web/assets/__tests__/pages/address.js
@@ -1,56 +1,28 @@
 import { reducer, initialState } from '../../js/pages/address'
 
 describe('RECEIVED_NEW_BLOCK', () => {
-  test('with new block', () => {
-    const state = Object.assign({}, initialState, {
-      validationCount: 30,
-      validatedBlocks: [{ blockNumber: 1, blockHtml: 'test 1' }]
-    })
+  test('increases validation count', () => {
+    const state = Object.assign({}, initialState, { validationCount: 30 })
     const action = {
       type: 'RECEIVED_NEW_BLOCK',
-      msg: { blockNumber: 2, blockHtml: 'test 2' }
+      blockHtml: 'test 2'
     }
     const output = reducer(state, action)
 
     expect(output.validationCount).toEqual(31)
-    expect(output.validatedBlocks).toEqual([
-      { blockNumber: 2, blockHtml: 'test 2' },
-      { blockNumber: 1, blockHtml: 'test 1' }
-    ])
   })
-  test('when channel has been disconnected', () => {
+  test('when channel has been disconnected does not increase validation count', () => {
     const state = Object.assign({}, initialState, {
       channelDisconnected: true,
-      validationCount: 30,
-      validatedBlocks: [{ blockNumber: 1, blockHtml: 'test 1' }]
+      validationCount: 30
     })
     const action = {
       type: 'RECEIVED_NEW_BLOCK',
-      msg: { blockNumber: 2, blockHtml: 'test 2' }
+      blockHtml: 'test 2'
     }
     const output = reducer(state, action)
 
     expect(output.validationCount).toEqual(30)
-    expect(output.validatedBlocks).toEqual([
-      { blockNumber: 1, blockHtml: 'test 1' }
-    ])
-  })
-  test('beyond page one', () => {
-    const state = Object.assign({}, initialState, {
-      beyondPageOne: true,
-      validationCount: 30,
-      validatedBlocks: [{ blockNumber: 1, blockHtml: 'test 1' }]
-    })
-    const action = {
-      type: 'RECEIVED_NEW_BLOCK',
-      msg: { blockNumber: 2, blockHtml: 'test 2' }
-    }
-    const output = reducer(state, action)
-
-    expect(output.validationCount).toEqual(31)
-    expect(output.validatedBlocks).toEqual([
-      { blockNumber: 1, blockHtml: 'test 1' }
-    ])
   })
 })
 
diff --git a/apps/block_scout_web/assets/__tests__/pages/address/validations.js b/apps/block_scout_web/assets/__tests__/pages/address/validations.js
new file mode 100644
index 0000000000..f8bf284029
--- /dev/null
+++ b/apps/block_scout_web/assets/__tests__/pages/address/validations.js
@@ -0,0 +1,46 @@
+import { reducer, initialState } from '../../../js/pages/address/validations'
+
+describe('RECEIVED_NEW_BLOCK', () => {
+  test('adds new block to the top of the list', () => {
+    const state = Object.assign({}, initialState, {
+      items: ['test 1']
+    })
+    const action = {
+      type: 'RECEIVED_NEW_BLOCK',
+      blockHtml: 'test 2'
+    }
+    const output = reducer(state, action)
+
+    expect(output.items).toEqual(['test 2', 'test 1'])
+  })
+
+  test('does nothing beyond page one', () => {
+    const state = Object.assign({}, initialState, {
+      beyondPageOne: true,
+      channelDisconnected: false,
+      items: ['test 1']
+    })
+    const action = {
+      type: 'RECEIVED_NEW_BLOCK',
+      blockHtml: 'test 2'
+    }
+    const output = reducer(state, action)
+
+    expect(output.items).toEqual(['test 1'])
+  })
+
+  test('does nothing when channel has been disconnected', () => {
+    const state = Object.assign({}, initialState, {
+      channelDisconnected: true,
+      items: ['test 1']
+    })
+    const action = {
+      type: 'RECEIVED_NEW_BLOCK',
+      blockHtml: 'test 2'
+    }
+    const output = reducer(state, action)
+
+    expect(output.items).toEqual(['test 1'])
+  })
+})
+
diff --git a/apps/block_scout_web/assets/js/app.js b/apps/block_scout_web/assets/js/app.js
index 8f084b5521..e1fcc24b45 100644
--- a/apps/block_scout_web/assets/js/app.js
+++ b/apps/block_scout_web/assets/js/app.js
@@ -21,6 +21,7 @@ import 'bootstrap'
 import './locale'
 
 import './pages/address'
+import './pages/address/validations'
 import './pages/blocks'
 import './pages/chain'
 import './pages/pending_transactions'
diff --git a/apps/block_scout_web/assets/js/pages/address.js b/apps/block_scout_web/assets/js/pages/address.js
index 683fc66a57..ce790e04b5 100644
--- a/apps/block_scout_web/assets/js/pages/address.js
+++ b/apps/block_scout_web/assets/js/pages/address.js
@@ -26,7 +26,6 @@ export const initialState = {
   transactions: [],
   internalTransactions: [],
   internalTransactionsBatch: [],
-  validatedBlocks: [],
 
   beyondPageOne: null,
 
@@ -53,15 +52,7 @@ function baseReducer (state = initialState, action) {
       if (state.channelDisconnected) return state
 
       const validationCount = state.validationCount + 1
-
-      if (state.beyondPageOne) return Object.assign({}, state, { validationCount })
-      return Object.assign({}, state, {
-        validatedBlocks: [
-          action.msg,
-          ...state.validatedBlocks
-        ],
-        validationCount
-      })
+      return Object.assign({}, state, { validationCount })
     }
     case 'RECEIVED_NEW_INTERNAL_TRANSACTION_BATCH': {
       if (state.channelDisconnected || state.beyondPageOne) return state
@@ -209,22 +200,6 @@ const elements = {
       $channelBatching.show()
       $el[0].innerHTML = numeral(state.internalTransactionsBatch.length).format()
     }
-  },
-  '[data-selector="validations-list"]': {
-    load ($el) {
-      return {
-        validatedBlocks: $el.children().map((index, el) => ({
-          blockNumber: parseInt(el.dataset.blockNumber),
-          blockHtml: el.outerHTML
-        })).toArray()
-      }
-    },
-    render ($el, state, oldState) {
-      if (oldState.validatedBlocks === state.validatedBlocks) return
-      const container = $el[0]
-      const newElements = _.map(state.validatedBlocks, ({ blockHtml }) => $(blockHtml)[0])
-      listMorph(container, newElements, { key: 'dataset.blockNumber' })
-    }
   }
 }
 
diff --git a/apps/block_scout_web/assets/js/pages/address/validations.js b/apps/block_scout_web/assets/js/pages/address/validations.js
new file mode 100644
index 0000000000..6aca07a98b
--- /dev/null
+++ b/apps/block_scout_web/assets/js/pages/address/validations.js
@@ -0,0 +1,64 @@
+import $ from 'jquery'
+import _ from 'lodash'
+import humps from 'humps'
+import socket from '../../socket'
+import { connectElements } from '../../lib/redux_helpers.js'
+import { createAsyncLoadStore } from '../../lib/async_listing_load.js'
+
+export const initialState = {
+  addressHash: null,
+  channelDisconnected: false
+}
+
+export function reducer (state = initialState, action) {
+  switch (action.type) {
+    case 'PAGE_LOAD':
+    case 'ELEMENTS_LOAD': {
+      return Object.assign({}, state, _.omit(action, 'type'))
+    }
+    case 'CHANNEL_DISCONNECTED': {
+      return Object.assign({}, state, { channelDisconnected: true })
+    }
+    case 'RECEIVED_NEW_BLOCK': {
+      if (state.channelDisconnected) return state
+      if (state.beyondPageOne) return state
+
+      return Object.assign({}, state, {
+        items: [
+          action.blockHtml,
+          ...state.items
+        ]
+      })
+    }
+    default:
+      return state
+  }
+}
+
+const elements = {
+  '[data-selector="channel-disconnected-message"]': {
+    render ($el, state) {
+      if (state.channelDisconnected) $el.show()
+    }
+  }
+}
+
+if ($('[data-page="blocks-validated"]').length) {
+  const store = createAsyncLoadStore(reducer, initialState, 'dataset.blockNumber')
+  connectElements({ store, elements })
+  const addressHash = $('[data-page="address-details"]')[0].dataset.pageAddressHash
+  store.dispatch({
+    type: 'PAGE_LOAD',
+    addressHash
+  })
+
+  const blocksChannel = socket.channel(`blocks:${addressHash}`, {})
+  blocksChannel.join()
+  blocksChannel.onError(() => store.dispatch({
+    type: 'CHANNEL_DISCONNECTED'
+  }))
+  blocksChannel.on('new_block', (msg) => store.dispatch({
+    type: 'RECEIVED_NEW_BLOCK',
+    blockHtml: humps.camelizeKeys(msg).blockHtml
+  }))
+}
diff --git a/apps/block_scout_web/lib/block_scout_web/controllers/address_validation_controller.ex b/apps/block_scout_web/lib/block_scout_web/controllers/address_validation_controller.ex
index 6d39df12b5..90944822ab 100644
--- a/apps/block_scout_web/lib/block_scout_web/controllers/address_validation_controller.ex
+++ b/apps/block_scout_web/lib/block_scout_web/controllers/address_validation_controller.ex
@@ -5,12 +5,16 @@ defmodule BlockScoutWeb.AddressValidationController do
   use BlockScoutWeb, :controller
 
   import BlockScoutWeb.AddressController, only: [transaction_count: 1, validation_count: 1]
-  import BlockScoutWeb.Chain, only: [paging_options: 1, next_page_params: 3, split_list_by_page: 1]
 
-  alias Explorer.{Chain, Market}
+  import BlockScoutWeb.Chain,
+    only: [paging_options: 1, next_page_params: 3, split_list_by_page: 1]
+
+  alias BlockScoutWeb.BlockView
   alias Explorer.ExchangeRates.Token
+  alias Explorer.{Chain, Market}
+  alias Phoenix.View
 
-  def index(conn, %{"address_id" => address_hash_string} = params) do
+  def index(conn, %{"address_id" => address_hash_string, "type" => "JSON"} = params) do
     with {:ok, address_hash} <- Chain.string_to_address_hash(address_hash_string),
          {:ok, address} <- Chain.find_or_insert_address_from_hash(address_hash) do
       full_options =
@@ -28,15 +32,52 @@ defmodule BlockScoutWeb.AddressValidationController do
       blocks_plus_one = Chain.get_blocks_validated_by_address(full_options, address)
       {blocks, next_page} = split_list_by_page(blocks_plus_one)
 
+      next_page_path =
+        case next_page_params(next_page, blocks, params) do
+          nil ->
+            nil
+
+          next_page_params ->
+            address_validation_path(
+              conn,
+              :index,
+              address_hash_string,
+              Map.delete(next_page_params, "type")
+            )
+        end
+
+      items =
+        Enum.map(blocks, fn block ->
+          View.render_to_string(
+            BlockView,
+            "_tile.html",
+            conn: conn,
+            block: block,
+            block_type: BlockView.block_type(block)
+          )
+        end)
+
+      json(conn, %{items: items, next_page_path: next_page_path})
+    else
+      :error ->
+        unprocessable_entity(conn)
+
+      {:error, :not_found} ->
+        not_found(conn)
+    end
+  end
+
+  def index(conn, %{"address_id" => address_hash_string}) do
+    with {:ok, address_hash} <- Chain.string_to_address_hash(address_hash_string),
+         {:ok, address} <- Chain.find_or_insert_address_from_hash(address_hash) do
       render(
         conn,
         "index.html",
         address: address,
-        blocks: blocks,
+        current_path: current_path(conn),
         transaction_count: transaction_count(address),
         validation_count: validation_count(address),
-        exchange_rate: Market.get_exchange_rate(Explorer.coin()) || Token.null(),
-        next_page_params: next_page_params(next_page, blocks, params)
+        exchange_rate: Market.get_exchange_rate(Explorer.coin()) || Token.null()
       )
     else
       :error ->
diff --git a/apps/block_scout_web/lib/block_scout_web/etherscan.ex b/apps/block_scout_web/lib/block_scout_web/etherscan.ex
index a9890e4293..9ed0c1f64e 100644
--- a/apps/block_scout_web/lib/block_scout_web/etherscan.ex
+++ b/apps/block_scout_web/lib/block_scout_web/etherscan.ex
@@ -1012,7 +1012,7 @@ defmodule BlockScoutWeb.Etherscan do
   @account_txlistinternal_action %{
     name: "txlistinternal",
     description:
-      "Get internal transactions by transaction or address hash. Up to a maximum of 10,000 internal transactions.",
+      "Get internal transactions by transaction or address hash. Up to a maximum of 10,000 internal transactions. Also available through a GraphQL 'transaction' query.",
     required_params: [
       %{
         key: "txhash",
diff --git a/apps/block_scout_web/lib/block_scout_web/resolvers/internal_transaction.ex b/apps/block_scout_web/lib/block_scout_web/resolvers/internal_transaction.ex
new file mode 100644
index 0000000000..08f3ca45ce
--- /dev/null
+++ b/apps/block_scout_web/lib/block_scout_web/resolvers/internal_transaction.ex
@@ -0,0 +1,23 @@
+defmodule BlockScoutWeb.Resolvers.InternalTransaction do
+  @moduledoc false
+
+  alias Absinthe.Relay.Connection
+  alias Explorer.Chain.Transaction
+  alias Explorer.{GraphQL, Repo}
+
+  def get_by(%{transaction_hash: _, index: _} = args) do
+    GraphQL.get_internal_transaction(args)
+  end
+
+  def get_by(%Transaction{} = transaction, args, _) do
+    transaction
+    |> GraphQL.transaction_to_internal_transactions_query()
+    |> Connection.from_query(&Repo.all/1, args, options(args))
+  end
+
+  defp options(%{before: _}), do: []
+
+  defp options(%{count: count}), do: [count: count]
+
+  defp options(_), do: []
+end
diff --git a/apps/block_scout_web/lib/block_scout_web/resolvers/transaction.ex b/apps/block_scout_web/lib/block_scout_web/resolvers/transaction.ex
index c13aa2a561..aa54a8e6da 100644
--- a/apps/block_scout_web/lib/block_scout_web/resolvers/transaction.ex
+++ b/apps/block_scout_web/lib/block_scout_web/resolvers/transaction.ex
@@ -8,7 +8,7 @@ defmodule BlockScoutWeb.Resolvers.Transaction do
   def get_by(_, %{hash: hash}, _) do
     case Chain.hash_to_transaction(hash) do
       {:ok, transaction} -> {:ok, transaction}
-      {:error, :not_found} -> {:error, "Transaction hash #{hash} was not found."}
+      {:error, :not_found} -> {:error, "Transaction not found."}
     end
   end
 
diff --git a/apps/block_scout_web/lib/block_scout_web/schema.ex b/apps/block_scout_web/lib/block_scout_web/schema.ex
index c310ea844a..7d6d150acd 100644
--- a/apps/block_scout_web/lib/block_scout_web/schema.ex
+++ b/apps/block_scout_web/lib/block_scout_web/schema.ex
@@ -6,8 +6,16 @@ defmodule BlockScoutWeb.Schema do
 
   alias Absinthe.Middleware.Dataloader, as: AbsintheMiddlewareDataloader
   alias Absinthe.Plugin, as: AbsinthePlugin
-  alias BlockScoutWeb.Resolvers.{Address, Block, Transaction}
+
+  alias BlockScoutWeb.Resolvers.{
+    Address,
+    Block,
+    InternalTransaction,
+    Transaction
+  }
+
   alias Explorer.Chain
+  alias Explorer.Chain.InternalTransaction, as: ExplorerChainInternalTransaction
   alias Explorer.Chain.Transaction, as: ExplorerChainTransaction
 
   import_types(BlockScoutWeb.Schema.Types)
@@ -17,6 +25,9 @@ defmodule BlockScoutWeb.Schema do
       %ExplorerChainTransaction{}, _ ->
         :transaction
 
+      %ExplorerChainInternalTransaction{}, _ ->
+        :internal_transaction
+
       _, _ ->
         nil
     end)
@@ -29,6 +40,11 @@ defmodule BlockScoutWeb.Schema do
           {:ok, hash} = Chain.string_to_transaction_hash(transaction_hash_string)
           Transaction.get_by(%{}, %{hash: hash}, %{})
 
+        %{type: :internal_transaction, id: id}, _ ->
+          %{"transaction_hash" => transaction_hash_string, "index" => index} = Jason.decode!(id)
+          {:ok, transaction_hash} = Chain.string_to_transaction_hash(transaction_hash_string)
+          InternalTransaction.get_by(%{transaction_hash: transaction_hash, index: index})
+
         _, _ ->
           {:error, "Unknown node"}
       end)
diff --git a/apps/block_scout_web/lib/block_scout_web/schema/scalars.ex b/apps/block_scout_web/lib/block_scout_web/schema/scalars.ex
index 675992eea4..b7a8939a39 100644
--- a/apps/block_scout_web/lib/block_scout_web/schema/scalars.ex
+++ b/apps/block_scout_web/lib/block_scout_web/schema/scalars.ex
@@ -99,4 +99,18 @@ defmodule BlockScoutWeb.Schema.Scalars do
     value(:ok)
     value(:error)
   end
+
+  enum :call_type do
+    value(:call)
+    value(:callcode)
+    value(:delegatecall)
+    value(:staticcall)
+  end
+
+  enum :type do
+    value(:call)
+    value(:create)
+    value(:reward)
+    value(:selfdestruct)
+  end
 end
diff --git a/apps/block_scout_web/lib/block_scout_web/schema/types.ex b/apps/block_scout_web/lib/block_scout_web/schema/types.ex
index 3492c71fe9..85e843c447 100644
--- a/apps/block_scout_web/lib/block_scout_web/schema/types.ex
+++ b/apps/block_scout_web/lib/block_scout_web/schema/types.ex
@@ -6,12 +6,16 @@ defmodule BlockScoutWeb.Schema.Types do
 
   import Absinthe.Resolution.Helpers
 
-  alias BlockScoutWeb.Resolvers.Transaction
+  alias BlockScoutWeb.Resolvers.{
+    InternalTransaction,
+    Transaction
+  }
 
   import_types(Absinthe.Type.Custom)
   import_types(BlockScoutWeb.Schema.Scalars)
 
   connection(node_type: :transaction)
+  connection(node_type: :internal_transaction)
 
   @desc """
   A stored representation of a Web3 address.
@@ -60,6 +64,30 @@ defmodule BlockScoutWeb.Schema.Types do
     field(:parent_hash, :full_hash)
   end
 
+  @desc """
+  Models internal transactions.
+  """
+  node object(:internal_transaction, id_fetcher: &internal_transaction_id_fetcher/2) do
+    field(:call_type, :call_type)
+    field(:created_contract_code, :data)
+    field(:error, :string)
+    field(:gas, :decimal)
+    field(:gas_used, :decimal)
+    field(:index, :integer)
+    field(:init, :data)
+    field(:input, :data)
+    field(:output, :data)
+    field(:trace_address, :json)
+    field(:type, :type)
+    field(:value, :wei)
+    field(:block_number, :integer)
+    field(:transaction_index, :integer)
+    field(:created_contract_address_hash, :address_hash)
+    field(:from_address_hash, :address_hash)
+    field(:to_address_hash, :address_hash)
+    field(:transaction_hash, :full_hash)
+  end
+
   @desc """
   The representation of a verified Smart Contract.
 
@@ -99,6 +127,19 @@ defmodule BlockScoutWeb.Schema.Types do
     field(:from_address_hash, :address_hash)
     field(:to_address_hash, :address_hash)
     field(:created_contract_address_hash, :address_hash)
+
+    connection field(:internal_transactions, node_type: :internal_transaction) do
+      arg(:count, :integer)
+      resolve(&InternalTransaction.get_by/3)
+
+      complexity(fn
+        %{first: first}, child_complexity ->
+          first * child_complexity
+
+        %{last: last}, child_complexity ->
+          last * child_complexity
+      end)
+    end
   end
 
   @desc """
@@ -113,4 +154,8 @@ defmodule BlockScoutWeb.Schema.Types do
   end
 
   def transaction_id_fetcher(%{hash: hash}, _), do: to_string(hash)
+
+  def internal_transaction_id_fetcher(%{transaction_hash: transaction_hash, index: index}, _) do
+    Jason.encode!(%{transaction_hash: to_string(transaction_hash), index: index})
+  end
 end
diff --git a/apps/block_scout_web/lib/block_scout_web/templates/address_validation/index.html.eex b/apps/block_scout_web/lib/block_scout_web/templates/address_validation/index.html.eex
index f9028ba3e6..f677724b5d 100644
--- a/apps/block_scout_web/lib/block_scout_web/templates/address_validation/index.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/address_validation/index.html.eex
@@ -1,7 +1,7 @@
 <section class="container">
   <%= render BlockScoutWeb.AddressView, "overview.html", assigns %>
 
-  <section>
+  <section data-page="blocks-validated">
     <div class="card">
       <div class="card-header">
         <!-- DESKTOP TAB NAV -->
@@ -98,7 +98,7 @@
         </ul>
       </div>
 
-      <div class="card-body">
+      <div data-async-listing="<%= @current_path %>" class="card-body">
         <div data-selector="channel-disconnected-message" style="display: none;">
           <div data-selector="reload-button" class="alert alert-danger">
             <a href="#" class="alert-link"><%= gettext "Connection Lost, click to load newer validations" %></a>
@@ -106,24 +106,31 @@
         </div>
 
         <h2 class="card-title"><%=gettext("Blocks Validated")%></h2>
-        <span data-selector="validations-list">
-          <%= for block <- @blocks do %>
-            <%= render BlockScoutWeb.BlockView, "_tile.html", block: block, block_type: BlockScoutWeb.BlockView.block_type(block)%>
-          <% end %>
-        </span>
-        <div>
-          <%= if @next_page_params do %>
-            <%= link(
-              gettext("Older"),
-              class: "button button-secondary button-sm float-right mt-3",
-              to: address_validation_path(
-                @conn,
-                :index,
-                @address,
-                @next_page_params
-              )
-            ) %>
-          <% end %>
+        <div data-loading-message class="tile tile-muted text-center mt-3">
+          <span class="loading-spinner-small mr-2">
+            <span class="loading-spinner-block-1"></span>
+            <span class="loading-spinner-block-2"></span>
+          </span>
+          <%= gettext("Loading...") %>
+        </div>
+        <div data-empty-response-message class="tile tile-muted text-center" style="display: none;">
+          <span><%= gettext "There are no blocks validated by this address." %></span>
+        </div>
+        <button data-error-message class="alert alert-danger col-12 text-left" style="display: none;">
+          <span class="alert-link">
+            <%= gettext "Something went wrong, click to reload." %>
+          </span>
+        </button>
+        <div data-items data-selector="validations-list"></div>
+        <a data-next-page-button href="#" class="button button-secondary button-small float-right mt-4" style="display: none;">
+          <%= gettext("Older") %>
+        </a>
+        <div data-loading-button class="button button-secondary button-small float-right mt-4" style="display: none;">
+          <span class="loading-spinner-small mr-2">
+            <span class="loading-spinner-block-1"></span>
+            <span class="loading-spinner-block-2"></span>
+          </span>
+          <%= gettext("Loading...") %>
         </div>
       </div> <!-- Card Body -->
     </div> <!-- Card -->
diff --git a/apps/block_scout_web/priv/gettext/default.pot b/apps/block_scout_web/priv/gettext/default.pot
index d73265cc8d..0687a0e605 100644
--- a/apps/block_scout_web/priv/gettext/default.pot
+++ b/apps/block_scout_web/priv/gettext/default.pot
@@ -639,7 +639,7 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/address_internal_transaction/index.html.eex:76
 #: lib/block_scout_web/templates/address_token_transfer/index.html.eex:31
-#: lib/block_scout_web/templates/address_validation/index.html.eex:117
+#: lib/block_scout_web/templates/address_validation/index.html.eex:126
 #: lib/block_scout_web/templates/block/index.html.eex:30
 #: lib/block_scout_web/templates/block_transaction/index.html.eex:50
 #: lib/block_scout_web/templates/pending_transaction/index.html.eex:41
@@ -1188,6 +1188,8 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:17
 #: lib/block_scout_web/templates/address_token_transfer/index.html.eex:19
+#: lib/block_scout_web/templates/address_validation/index.html.eex:114
+#: lib/block_scout_web/templates/address_validation/index.html.eex:133
 #: lib/block_scout_web/templates/tokens/read_contract/index.html.eex:25
 msgid "Loading..."
 msgstr ""
@@ -1417,7 +1419,13 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/address_internal_transaction/index.html.eex:60
 #: lib/block_scout_web/templates/address_token_transfer/index.html.eex:26
+#: lib/block_scout_web/templates/address_validation/index.html.eex:121
 #: lib/block_scout_web/templates/tokens/holder/index.html.eex:23
 #: lib/block_scout_web/templates/tokens/transfer/index.html.eex:21
 msgid "Something went wrong, click to reload."
 msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_validation/index.html.eex:117
+msgid "There are no blocks validated by this address."
+msgstr ""
diff --git a/apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po b/apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po
index 2b41acfd7f..f16f8735bb 100644
--- a/apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po
+++ b/apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po
@@ -639,7 +639,7 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/address_internal_transaction/index.html.eex:76
 #: lib/block_scout_web/templates/address_token_transfer/index.html.eex:31
-#: lib/block_scout_web/templates/address_validation/index.html.eex:117
+#: lib/block_scout_web/templates/address_validation/index.html.eex:126
 #: lib/block_scout_web/templates/block/index.html.eex:30
 #: lib/block_scout_web/templates/block_transaction/index.html.eex:50
 #: lib/block_scout_web/templates/pending_transaction/index.html.eex:41
@@ -1188,6 +1188,8 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:17
 #: lib/block_scout_web/templates/address_token_transfer/index.html.eex:19
+#: lib/block_scout_web/templates/address_validation/index.html.eex:114
+#: lib/block_scout_web/templates/address_validation/index.html.eex:133
 #: lib/block_scout_web/templates/tokens/read_contract/index.html.eex:25
 msgid "Loading..."
 msgstr ""
@@ -1417,7 +1419,13 @@ msgstr ""
 #, elixir-format
 #: lib/block_scout_web/templates/address_internal_transaction/index.html.eex:60
 #: lib/block_scout_web/templates/address_token_transfer/index.html.eex:26
+#: lib/block_scout_web/templates/address_validation/index.html.eex:121
 #: lib/block_scout_web/templates/tokens/holder/index.html.eex:23
 #: lib/block_scout_web/templates/tokens/transfer/index.html.eex:21
 msgid "Something went wrong, click to reload."
 msgstr ""
+
+#, elixir-format
+#: lib/block_scout_web/templates/address_validation/index.html.eex:117
+msgid "There are no blocks validated by this address."
+msgstr ""
diff --git a/apps/block_scout_web/test/block_scout_web/schema/query/address_test.exs b/apps/block_scout_web/test/block_scout_web/schema/query/address_test.exs
index 02dff2fe9a..471401f7b6 100644
--- a/apps/block_scout_web/test/block_scout_web/schema/query/address_test.exs
+++ b/apps/block_scout_web/test/block_scout_web/schema/query/address_test.exs
@@ -515,33 +515,13 @@ defmodule BlockScoutWeb.Schema.Query.AddressTest do
         |> List.last()
         |> Map.get("cursor")
 
-      query3 = """
-      query ($hash: AddressHash!, $first: Int!, $after: Int!) {
-        address(hash: $hash) {
-          transactions(first: $first, after: $after) {
-            page_info {
-              has_next_page
-              has_previous_page
-            }
-            edges {
-              node {
-                hash
-                block_number
-              }
-              cursor
-            }
-          }
-        }
-      }
-      """
-
       variables3 = %{
         "hash" => to_string(address.hash),
         "first" => 3,
         "after" => last_cursor_page2
       }
 
-      conn = get(conn, "/graphql", query: query3, variables: variables3)
+      conn = get(conn, "/graphql", query: query2, variables: variables3)
 
       %{"data" => %{"address" => %{"transactions" => page3}}} = json_response(conn, 200)
 
diff --git a/apps/block_scout_web/test/block_scout_web/schema/query/node_test.exs b/apps/block_scout_web/test/block_scout_web/schema/query/node_test.exs
index 6eac1cf81f..00d21fe85d 100644
--- a/apps/block_scout_web/test/block_scout_web/schema/query/node_test.exs
+++ b/apps/block_scout_web/test/block_scout_web/schema/query/node_test.exs
@@ -31,5 +31,100 @@ defmodule BlockScoutWeb.Schema.Query.NodeTest do
                }
              }
     end
+
+    test "with 'id' for non-existent transaction", %{conn: conn} do
+      transaction = build(:transaction)
+
+      query = """
+      query($id: ID!) {
+        node(id: $id) {
+          ... on Transaction {
+            id
+            hash
+          }
+        }
+      }
+      """
+
+      id = Base.encode64("Transaction:#{transaction.hash}")
+
+      variables = %{"id" => id}
+
+      conn = get(conn, "/graphql", query: query, variables: variables)
+
+      %{"errors" => [error]} = json_response(conn, 200)
+
+      assert error["message"] == "Transaction not found."
+    end
+
+    test "with valid argument 'id' for an internal transaction", %{conn: conn} do
+      transaction = insert(:transaction)
+
+      internal_transaction = insert(:internal_transaction, transaction: transaction, index: 0)
+
+      query = """
+      query($id: ID!) {
+        node(id: $id) {
+          ... on InternalTransaction {
+            id
+            transaction_hash
+            index
+          }
+        }
+      }
+      """
+
+      id =
+        %{transaction_hash: to_string(transaction.hash), index: internal_transaction.index}
+        |> Jason.encode!()
+        |> (fn unique_id -> "InternalTransaction:#{unique_id}" end).()
+        |> Base.encode64()
+
+      variables = %{"id" => id}
+
+      conn = get(conn, "/graphql", query: query, variables: variables)
+
+      assert json_response(conn, 200) == %{
+               "data" => %{
+                 "node" => %{
+                   "id" => id,
+                   "transaction_hash" => to_string(transaction.hash),
+                   "index" => internal_transaction.index
+                 }
+               }
+             }
+    end
+
+    test "with 'id' for non-existent internal transaction", %{conn: conn} do
+      transaction = build(:transaction)
+
+      internal_transaction = build(:internal_transaction, transaction: transaction, index: 0)
+
+      query = """
+      query($id: ID!) {
+        node(id: $id) {
+          ... on InternalTransaction {
+            id
+            transaction_hash
+            index
+          }
+        }
+      }
+      """
+
+      id =
+        %{transaction_hash: to_string(transaction.hash), index: internal_transaction.index}
+        |> Jason.encode!()
+        |> (fn unique_id -> "InternalTransaction:#{unique_id}" end).()
+        |> Base.encode64()
+
+      variables = %{"id" => id}
+
+      conn = get(conn, "/graphql", query: query, variables: variables)
+
+      %{"errors" => [error]} = json_response(conn, 200)
+
+      assert error["message"] == "Internal transaction not found."
+    end
   end
 end
diff --git a/apps/block_scout_web/test/block_scout_web/schema/query/transaction_test.exs b/apps/block_scout_web/test/block_scout_web/schema/query/transaction_test.exs
index cda0bc56db..e76ca54e43 100644
--- a/apps/block_scout_web/test/block_scout_web/schema/query/transaction_test.exs
+++ b/apps/block_scout_web/test/block_scout_web/schema/query/transaction_test.exs
@@ -81,7 +81,7 @@ defmodule BlockScoutWeb.Schema.Query.TransactionTest do
       conn = get(conn, "/graphql", query: query, variables: variables)
 
       assert %{"errors" => [error]} = json_response(conn, 200)
-      assert error["message"] =~ ~s(Transaction hash #{transaction.hash} was not found)
+      assert error["message"] == "Transaction not found."
     end
 
     test "errors if argument 'hash' is missing", %{conn: conn} do
@@ -116,4 +116,396 @@ defmodule BlockScoutWeb.Schema.Query.TransactionTest do
       assert error["message"] =~ ~s(Argument "hash" has invalid value)
     end
   end
+
+  describe "transaction internal_transactions field" do
+    test "returns all expected internal_transaction fields", %{conn: conn} do
+      address = insert(:address)
+      contract_address = insert(:contract_address)
+
+      block = insert(:block)
+
+      transaction =
+        :transaction
+        |> insert(from_address: address)
+        |> with_contract_creation(contract_address)
+        |> with_block(block)
+
+      internal_transaction_attributes = %{
+        transaction: transaction,
+        index: 0,
+        from_address: address,
+        call_type: :call
+      }
+
+      internal_transaction =
+        :internal_transaction_create
+        |> insert(internal_transaction_attributes)
+        |> with_contract_creation(contract_address)
+
+      query = """
+      query ($hash: FullHash!, $first: Int!) {
+        transaction(hash: $hash) {
+          internal_transactions(first: $first) {
+            edges {
+              node {
+                call_type
+                created_contract_code
+                error
+                gas
+                gas_used
+                index
+                init
+                input
+                output
+                trace_address
+                type
+                value
+                block_number
+                transaction_index
+                created_contract_address_hash
+                from_address_hash
+                to_address_hash
+                transaction_hash
+              }
+            }
+          }
+        }
+      }
+      """
+
+      variables = %{
+        "hash" => to_string(transaction.hash),
+        "first" => 1
+      }
+
+      conn = get(conn, "/graphql", query: query, variables: variables)
+
+      assert json_response(conn, 200) == %{
+               "data" => %{
+                 "transaction" => %{
+                   "internal_transactions" => %{
+                     "edges" => [
+                       %{
+                         "node" => %{
+                           "call_type" => internal_transaction.call_type |> to_string() |> String.upcase(),
+                           "created_contract_code" => to_string(internal_transaction.created_contract_code),
+                           "error" => internal_transaction.error,
+                           "gas" => to_string(internal_transaction.gas),
+                           "gas_used" => to_string(internal_transaction.gas_used),
+                           "index" => internal_transaction.index,
+                           "init" => to_string(internal_transaction.init),
+                           "input" => nil,
+                           "output" => nil,
+                           "trace_address" => Jason.encode!(internal_transaction.trace_address),
+                           "type" => internal_transaction.type |> to_string() |> String.upcase(),
+                           "value" => to_string(internal_transaction.value.value),
+                           "block_number" => internal_transaction.block_number,
+                           "transaction_index" => internal_transaction.transaction_index,
+                           "created_contract_address_hash" =>
+                             to_string(internal_transaction.created_contract_address_hash),
+                           "from_address_hash" => to_string(internal_transaction.from_address_hash),
+                           "to_address_hash" => nil,
+                           "transaction_hash" => to_string(internal_transaction.transaction_hash)
+                         }
+                       }
+                     ]
+                   }
+                 }
+               }
+             }
+    end
+
+    test "with transaction with zero internal transactions", %{conn: conn} do
+      address = insert(:address)
+
+      block = insert(:block)
+
+      transaction =
+        :transaction
+        |> insert(from_address: address)
+        |> with_block(block)
+
+      query = """
+      query ($hash: FullHash!, $first: Int!) {
+        transaction(hash: $hash) {
+          internal_transactions(first: $first) {
+            edges {
+              node {
+                index
+                transaction_hash
+              }
+            }
+          }
+        }
+      }
+      """
+
+      variables = %{
+        "hash" => to_string(transaction.hash),
+        "first" => 1
+      }
+
+      conn = get(conn, "/graphql", query: query, variables: variables)
+
+      assert json_response(conn, 200) == %{
+               "data" => %{
+                 "transaction" => %{
+                   "internal_transactions" => %{
+                     "edges" => []
+                   }
+                 }
+               }
+             }
+    end
+
+    test "internal transactions are ordered by ascending index", %{conn: conn} do
+      transaction = insert(:transaction)
+
+      insert(:internal_transaction, transaction: transaction, index: 2)
+      insert(:internal_transaction, transaction: transaction, index: 0)
+      insert(:internal_transaction, transaction: transaction, index: 1)
+
+      query = """
+      query ($hash: FullHash!, $first: Int!) {
+        transaction(hash: $hash) {
+          internal_transactions(first: $first) {
+            edges {
+              node {
+                index
+                transaction_hash
+              }
+            }
+          }
+        }
+      }
+      """
+
+      variables = %{
+        "hash" => to_string(transaction.hash),
+        "first" => 3
+      }
+
+      response =
+        conn
+        |> get("/graphql", query: query, variables: variables)
+        |> json_response(200)
+
+      internal_transactions = get_in(response, ["data", "transaction", "internal_transactions", "edges"])
+
+      index_order = Enum.map(internal_transactions, & &1["node"]["index"])
+
+      assert index_order == Enum.sort(index_order)
+    end
+
+    test "complexity correlates to first or last argument", %{conn: conn} do
+      transaction = insert(:transaction)
+
+      query1 = """
+      query ($hash: FullHash!, $first: Int!) {
+        transaction(hash: $hash) {
+          internal_transactions(first: $first) {
+            edges {
+              node {
+                index
+                transaction_hash
+              }
+            }
+          }
+        }
+      }
+      """
+
+      variables1 = %{
+        "hash" => to_string(transaction.hash),
+        "first" => 55
+      }
+
+      response1 =
+        conn
+        |> get("/graphql", query: query1, variables: variables1)
+        |> json_response(200)
+
+      assert %{"errors" => [error1, error2, error3]} = response1
+      assert error1["message"] =~ ~s(Field internal_transactions is too complex)
+      assert error2["message"] =~ ~s(Field transaction is too complex)
+      assert error3["message"] =~ ~s(Operation is too complex)
+
+      query2 = """
+      query ($hash: FullHash!, $last: Int!, $count: Int!) {
+        transaction(hash: $hash) {
+          internal_transactions(last: $last, count: $count) {
+            edges {
+              node {
+                index
+                transaction_hash
+              }
+            }
+          }
+        }
+      }
+      """
+
+      variables2 = %{
+        "hash" => to_string(transaction.hash),
+        "last" => 55,
+        "count" => 100
+      }
+
+      response2 =
+        conn
+        |> get("/graphql", query: query2, variables: variables2)
+        |> json_response(200)
+
+      assert %{"errors" => [error1, error2, error3]} = response2
+      assert error1["message"] =~ ~s(Field internal_transactions is too complex)
+      assert error2["message"] =~ ~s(Field transaction is too complex)
+      assert error3["message"] =~ ~s(Operation is too complex)
+    end
+
+    test "with 'last' and 'count' arguments", %{conn: conn} do
+      # "`last: N` must always be acompanied by either a `before:` argument to
+      # the query, or an explicit `count:` option to the `from_query` call.
+      # Otherwise it is impossible to derive the required offset."
+      # https://hexdocs.pm/absinthe_relay/Absinthe.Relay.Connection.html#from_query/4
+      #
+      # This test ensures support for a 'count' argument.
+
+      transaction = insert(:transaction)
+
+      insert(:internal_transaction, transaction: transaction, index: 2)
+      insert(:internal_transaction, transaction: transaction, index: 0)
+      insert(:internal_transaction, transaction: transaction, index: 1)
+
+      query = """
+      query ($hash: FullHash!, $last: Int!, $count: Int!) {
+        transaction(hash: $hash) {
+          internal_transactions(last: $last, count: $count) {
+            edges {
+              node {
+                index
+                transaction_hash
+              }
+            }
+          }
+        }
+      }
+      """
+
+      variables = %{
+        "hash" => to_string(transaction.hash),
+        "last" => 1,
+        "count" => 3
+      }
+
+      [internal_transaction] =
+        conn
+        |> get("/graphql", query: query, variables: variables)
+        |> json_response(200)
+        |> get_in(["data", "transaction", "internal_transactions", "edges"])
+
+      assert internal_transaction["node"]["index"] == 2
+    end
+
+    test "pagination support with 'first' and 'after' arguments", %{conn: conn} do
+      transaction = insert(:transaction)
+
+      for index <- 0..5 do
+        insert(:internal_transaction_create, transaction: transaction, index: index)
+      end
+
+      query1 = """
+      query ($hash: AddressHash!, $first: Int!) {
+        transaction(hash: $hash) {
+          internal_transactions(first: $first) {
+            page_info {
+              has_next_page
+              has_previous_page
+            }
+            edges {
+              node {
+                index
+                transaction_hash
+              }
+              cursor
+            }
+          }
+        }
+      }
+      """
+
+      variables1 = %{
+        "hash" => to_string(transaction.hash),
+        "first" => 2
+      }
+
+      conn = get(conn, "/graphql", query: query1, variables: variables1)
+
+      %{"data" => %{"transaction" => %{"internal_transactions" => page1}}} = json_response(conn, 200)
+
+      assert page1["page_info"] == %{"has_next_page" => true, "has_previous_page" => false}
+      assert Enum.all?(page1["edges"], &(&1["node"]["index"] in 0..1))
+
+      last_cursor_page1 =
+        page1
+        |> Map.get("edges")
+        |> List.last()
+        |> Map.get("cursor")
+
+      query2 = """
+      query ($hash: AddressHash!, $first: Int!, $after: ID!) {
+        transaction(hash: $hash) {
+          internal_transactions(first: $first, after: $after) {
+            page_info {
+              has_next_page
+              has_previous_page
+            }
+            edges {
+              node {
+                index
+                transaction_hash
+              }
+              cursor
+            }
+          }
+        }
+      }
+      """
+
+      variables2 = %{
+        "hash" => to_string(transaction.hash),
+        "first" => 2,
+        "after" => last_cursor_page1
+      }
+
+      page2 =
+        conn
+        |> get("/graphql", query: query2, variables: variables2)
+        |> json_response(200)
+        |> get_in(["data", "transaction", "internal_transactions"])
+
+      assert page2["page_info"] == %{"has_next_page" => true, "has_previous_page" => true}
+      assert Enum.all?(page2["edges"], &(&1["node"]["index"] in 2..3))
+
+      last_cursor_page2 =
+        page2
+        |> Map.get("edges")
+        |> List.last()
+        |> Map.get("cursor")
+
+      variables3 = %{
+        "hash" => to_string(transaction.hash),
+        "first" => 2,
+        "after" => last_cursor_page2
+      }
+
+      page3 =
+        conn
+        |> get("/graphql", query: query2, variables: variables3)
+        |> json_response(200)
+        |> get_in(["data", "transaction", "internal_transactions"])
+
+      assert page3["page_info"] == %{"has_next_page" => false, "has_previous_page" => true}
+      assert Enum.all?(page3["edges"], &(&1["node"]["index"] in 4..5))
+    end
+  end
 end
diff --git a/apps/explorer/lib/explorer/graphql.ex b/apps/explorer/lib/explorer/graphql.ex
index 50d3161861..b3265a4150 100644
--- a/apps/explorer/lib/explorer/graphql.ex
+++ b/apps/explorer/lib/explorer/graphql.ex
@@ -5,13 +5,28 @@ defmodule Explorer.GraphQL do
 
   import Ecto.Query,
     only: [
+      from: 2,
       order_by: 3,
       or_where: 3,
       where: 3
     ]
 
-  alias Explorer.Chain.{Address, Hash, Transaction}
+  alias Explorer.Chain.{
+    Address,
+    Hash,
+    InternalTransaction,
+    Transaction
+  }
+
+  alias Explorer.{Chain, Repo}
+
+  @doc """
+  Returns a query to fetch transactions with a matching `to_address_hash`,
+  `from_address_hash`, or `created_contract_address_hash` field for a given address.
 
+  Orders transactions by descending block number and index.
+  """
+  @spec address_to_transactions_query(Address.t()) :: Ecto.Query.t()
   def address_to_transactions_query(%Address{hash: %Hash{byte_count: unquote(Hash.Address.byte_count())} = address_hash}) do
     Transaction
     |> order_by([transaction], desc: transaction.block_number, desc: transaction.index)
@@ -19,4 +34,37 @@ defmodule Explorer.GraphQL do
     |> or_where([transaction], transaction.from_address_hash == ^address_hash)
     |> or_where([transaction], transaction.created_contract_address_hash == ^address_hash)
   end
+
+  @doc """
+  Returns an internal transaction for a given transaction hash and index.
+  """
+  @spec get_internal_transaction(map()) :: {:ok, InternalTransaction.t()} | {:error, String.t()}
+  def get_internal_transaction(%{transaction_hash: _, index: _} = clauses) do
+    if internal_transaction = Repo.get_by(InternalTransaction, clauses) do
+      {:ok, internal_transaction}
+    else
+      {:error, "Internal transaction not found."}
+    end
+  end
+
+  @doc """
+  Returns a query to fetch internal transactions for a given transaction.
+
+  Orders internal transactions by ascending index.
+  """
+  @spec transaction_to_internal_transactions_query(Transaction.t()) :: Ecto.Query.t()
+  def transaction_to_internal_transactions_query(%Transaction{
+        hash: %Hash{byte_count: unquote(Hash.Full.byte_count())} = hash
+      }) do
+    query =
+      from(
+        it in InternalTransaction,
+        inner_join: t in assoc(it, :transaction),
+        order_by: [asc: it.index],
+        where: it.transaction_hash == ^hash,
+        select: it
+      )
+
+    Chain.where_transaction_has_multiple_internal_transactions(query)
+  end
 end
diff --git a/apps/explorer/test/explorer/graphql_test.exs b/apps/explorer/test/explorer/graphql_test.exs
index 91cc1c6c00..f98a030bb2 100644
--- a/apps/explorer/test/explorer/graphql_test.exs
+++ b/apps/explorer/test/explorer/graphql_test.exs
@@ -87,4 +87,98 @@ defmodule Explorer.GraphQLTest do
       assert block_number_and_index_order == Enum.sort(block_number_and_index_order, &(&1 >= &2))
     end
   end
+
+  describe "get_internal_transaction/1" do
+    test "returns existing internal transaction" do
+      transaction = insert(:transaction)
+
+      internal_transaction = insert(:internal_transaction, transaction: transaction, index: 0)
+
+      clauses = %{transaction_hash: transaction.hash, index: internal_transaction.index}
+
+      {:ok, found_internal_transaction} = GraphQL.get_internal_transaction(clauses)
+
+      assert found_internal_transaction.transaction_hash == transaction.hash
+      assert found_internal_transaction.index == internal_transaction.index
+    end
+
+    test "returns error tuple for non-existent internal transaction" do
+      transaction = build(:transaction)
+
+      internal_transaction = build(:internal_transaction, transaction: transaction, index: 0)
+
+      clauses = %{transaction_hash: transaction.hash, index: internal_transaction.index}
+
+      assert GraphQL.get_internal_transaction(clauses) == {:error, "Internal transaction not found."}
+    end
+  end
+
+  describe "transcation_to_internal_transactions_query/1" do
+    test "with transaction with one internal transaction" do
+      transaction1 = insert(:transaction)
+      transaction2 = insert(:transaction)
+
+      internal_transaction = insert(:internal_transaction_create, transaction: transaction1, index: 0)
+      insert(:internal_transaction_create, transaction: transaction2, index: 0)
+
+      [found_internal_transaction] =
+        transaction1
+        |> GraphQL.transaction_to_internal_transactions_query()
+        |> Repo.all()
+
+      assert found_internal_transaction.transaction_hash == transaction1.hash
+      assert found_internal_transaction.index == internal_transaction.index
+    end
+
+    test "with transaction with multiple internal transactions" do
+      transaction1 = insert(:transaction)
+      transaction2 = insert(:transaction)
+
+      for index <- 0..2 do
+        insert(:internal_transaction_create, transaction: transaction1, index: index)
+      end
+
+      insert(:internal_transaction_create, transaction: transaction2, index: 0)
+
+      found_internal_transactions =
+        transaction1
+        |> GraphQL.transaction_to_internal_transactions_query()
+        |> Repo.all()
+
+      assert length(found_internal_transactions) == 3
+
+      for found_internal_transaction <- found_internal_transactions do
+        assert found_internal_transaction.transaction_hash == transaction1.hash
+      end
+    end
+
+    test "orders internal transactions by ascending index" do
+      transaction = insert(:transaction)
+
+      insert(:internal_transaction_create, transaction: transaction, index: 2)
+      insert(:internal_transaction_create, transaction: transaction, index: 0)
+      insert(:internal_transaction_create, transaction: transaction, index: 1)
+
+      found_internal_transactions =
+        transaction
+        |> GraphQL.transaction_to_internal_transactions_query()
+        |> Repo.all()
+
+      index_order = Enum.map(found_internal_transactions, & &1.index)
+
+      assert index_order == Enum.sort(index_order)
+    end
+
+    # Note that `transaction_to_internal_transactions_query/1` relies on
+    # `Explorer.Chain.where_transaction_has_multiple_transactions/1` to ensure the
+    # following behavior:
+    #
+    # * exclude internal transactions of type call with no siblings in the
+    #   transaction
+    #
+    # * include internal transactions of type create, reward, or suicide
+    #   even when they are alone in the parent transaction
+    #
+    # These two requirements are tested in `Explorer.ChainTest`.
+  end
 end