From d9387ae495040b9cd7755aee66797a47e2652153 Mon Sep 17 00:00:00 2001
From: nervehammer <suraj.raw120@gmail.com>
Date: Fri, 15 Mar 2019 15:28:43 +0530
Subject: [PATCH 1/2] add option to disable block rewards

---
 apps/indexer/config/config.exs                      |  1 +
 apps/indexer/lib/indexer/block/reward/fetcher.ex    |  7 ++++++-
 apps/indexer/lib/indexer/block/reward/supervisor.ex | 10 +++++++++-
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/apps/indexer/config/config.exs b/apps/indexer/config/config.exs
index a0f9662ef7..10dfd691a0 100644
--- a/apps/indexer/config/config.exs
+++ b/apps/indexer/config/config.exs
@@ -36,6 +36,7 @@ config :indexer,
   memory_limit: 1 <<< 30
 
 # config :indexer, Indexer.ReplacedTransaction.Supervisor, disabled?: true
+# config :indexer, Indexer.Block.Reward.Supervisor, disabled?: true 
 
 config :indexer, Indexer.Tracer,
   service: :indexer,
diff --git a/apps/indexer/lib/indexer/block/reward/fetcher.ex b/apps/indexer/lib/indexer/block/reward/fetcher.ex
index f480021545..88a9f9391d 100644
--- a/apps/indexer/lib/indexer/block/reward/fetcher.ex
+++ b/apps/indexer/lib/indexer/block/reward/fetcher.ex
@@ -18,6 +18,7 @@ defmodule Indexer.Block.Reward.Fetcher do
   alias Explorer.Chain.{Block, Wei}
   alias Indexer.Address.CoinBalances
   alias Indexer.{AddressExtraction, BufferedTask, CoinBalance, Tracer}
+  alias Indexer.Block.Reward.Supervisor, as: BlockRewardSupervisor
 
   @behaviour BufferedTask
 
@@ -34,7 +35,11 @@ defmodule Indexer.Block.Reward.Fetcher do
   """
   @spec async_fetch([Block.block_number()]) :: :ok
   def async_fetch(block_numbers) when is_list(block_numbers) do
-    BufferedTask.buffer(__MODULE__, block_numbers)
+    if BlockRewardSupervisor.disabled?() do
+      :ok
+    else
+      BufferedTask.buffer(__MODULE__, block_numbers)
+    end
   end
 
   @doc false
diff --git a/apps/indexer/lib/indexer/block/reward/supervisor.ex b/apps/indexer/lib/indexer/block/reward/supervisor.ex
index de222dd328..9dab2269a2 100644
--- a/apps/indexer/lib/indexer/block/reward/supervisor.ex
+++ b/apps/indexer/lib/indexer/block/reward/supervisor.ex
@@ -22,7 +22,15 @@ defmodule Indexer.Block.Reward.Supervisor do
   end
 
   def start_link(arguments, gen_server_options \\ []) do
-    Supervisor.start_link(__MODULE__, arguments, Keyword.put_new(gen_server_options, :name, __MODULE__))
+    if disabled?() do
+      :ignore
+    else
+      Supervisor.start_link(__MODULE__, arguments, Keyword.put_new(gen_server_options, :name, __MODULE__))
+    end
+  end
+
+  def disabled?() do
+    Application.get_env(:indexer, __MODULE__, [])[:disabled?] == true
   end
 
   @impl Supervisor

From 5602b3c531bff177efe1871b75f120589c651ea7 Mon Sep 17 00:00:00 2001
From: Victor Baranov <baranov.viktor.27@gmail.com>
Date: Fri, 15 Mar 2019 18:34:49 +0300
Subject: [PATCH 2/2] Add SpringChain to the list of Additional Chains
 Utilizing BlockScout in README

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 0aa5158753..152ec62d02 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,7 @@ Currently available block explorers (i.e. Etherscan and Etherchain) are closed s
 * [Fuse Network](https://explorer.fuse.io/)
 * [ARTIS](https://explorer.sigma1.artis.network)
 * [SafeChain](https://explorer.safechain.io)
+* [SpringChain](https://explorer.springrole.com/)
 
 ### Visual Interface