diff --git a/apps/block_scout_web/assets/js/lib/smart_contract/interact.js b/apps/block_scout_web/assets/js/lib/smart_contract/interact.js
index a147ecd5d047..1154fb370fe7 100644
--- a/apps/block_scout_web/assets/js/lib/smart_contract/interact.js
+++ b/apps/block_scout_web/assets/js/lib/smart_contract/interact.js
@@ -95,147 +95,8 @@ export const callMethod = (isWalletEnabled, $functionInputs, explorerChainId, $f
     })
 }
 
-const sanctionedAddresses = [
-  '0x01e2919679362dfbc9ee1644ba9c6da6d6245bb1',
-  '0x03893a7c7463ae47d46bc7f091665f1893656003',
-  '0x05e0b5b40b7b66098c2161a5ee11c5740a3a7c45',
-  '0x07687e702b410fa43f4cb4af7fa097918ffd2730',
-  '0x0836222f2b2b24a3f36f98668ed8f0b38d1a872f',
-  '0x08723392ed15743cc38513c4925f5e6be5c17243',
-  '0x09193888b3f38c82dedfda55259a82c0e7de875e',
-  '0x098b716b8aaf21512996dc57eb0615e2383e2f96',
-  '0x0d5550d52428e7e3175bfc9550207e4ad3859b17',
-  '0x0e3a09dda6b20afbb34ac7cd4a6881493f3e7bf7',
-  '0x12d66f87a04a9e220743712ce6d9bb1b5616b8fc',
-  '0x1356c899d8c9467c7f71c195612f8a395abf2f0a',
-  '0x169ad27a470d064dede56a2d3ff727986b15d52b',
-  '0x178169b423a011fff22b9e3f3abea13414ddd0f1',
-  '0x179f48c78f57a3a78f0608cc9197b8972921d1d2',
-  '0x19aa5fe80d33a56d56c78e82ea5e50e5d80b4dff',
-  '0x1da5821544e25c636c1417ba96ade4cf6d2f9b5a',
-  '0x1e34a77868e19a6647b1f2f47b51ed72dede95dd',
-  '0x22aaa7720ddd5388a3c0a3333430953c68f1849b',
-  '0x23173fe8b96a4ad8d2e17fb83ea5dcccdca1ae52',
-  '0x23773e65ed146a459791799d01336db287f25334',
-  '0x242654336ca2205714071898f67e254eb49acdce',
-  '0x2573bac39ebe2901b4389cd468f2872cf7767faf',
-  '0x26903a5a198d571422b2b4ea08b56a37cbd68c89',
-  '0x2717c5e28cf931547b621a5dddb772ab6a35b701',
-  '0x2f389ce8bd8ff92de3402ffce4691d17fc4f6535',
-  '0x2f50508a8a3d323b91336fa3ea6ae50e55f32185',
-  '0x2fc93484614a34f26f7970cbb94615ba109bb4bf',
-  '0x308ed4b7b49797e1a98d3818bff6fe5385410370',
-  '0x330bdfade01ee9bf63c209ee33102dd334618e0a',
-  '0x35fb6f6db4fb05e6a4ce86f2c93691425626d4b1',
-  '0x38735f03b30fbc022ddd06abed01f0ca823c6a94',
-  '0x39d908dac893cbcb53cc86e0ecc369aa4def1a29',
-  '0x3aac1cc67c2ec5db4ea850957b967ba153ad6279',
-  '0x3cbded43efdaf0fc77b9c55f6fc9988fcc9b757d',
-  '0x3cffd56b47b7b41c56258d9c7731abadc360e073',
-  '0x3e37627deaa754090fbfbb8bd226c1ce66d255e9',
-  '0x3efa30704d2b8bbac821307230376556cf8cc39e',
-  '0x407cceeaa7c95d2fe2250bf9f2c105aa7aafb512',
-  '0x43fa21d92141ba9db43052492e0deee5aa5f0a93',
-  '0x4736dcf1b7a3d580672cce6e7c65cd5cc9cfba9d',
-  '0x47ce0c6ed5b0ce3d3a51fdb1c52dc66a7c3c2936',
-  '0x48549a34ae37b12f6a30566245176994e17c6b4a',
-  '0x4f47bc496083c727c5fbe3ce9cdf2b0f6496270c',
-  '0x527653ea119f3e6a1f5bd18fbf4714081d7b31ce',
-  '0x538ab61e8a9fc1b2f93b3dd9011d662d89be6fe6',
-  '0x53b6936513e738f44fb50d2b9476730c0ab3bfc1',
-  '0x5512d943ed1f7c8a43f3435c85f7ab68b30121b0',
-  '0x57b2b8c82f065de8ef5573f9730fc1449b403c9f',
-  '0x58e8dcc13be9780fc42e8723d8ead4cf46943df2',
-  '0x5a7a51bfb49f190e5a6060a5bc6052ac14a3b59f',
-  '0x5cab7692d4e94096462119ab7bf57319726eed2a',
-  '0x5efda50f22d34f262c29268506c5fa42cb56a1ce',
-  '0x5f48c2a71b2cc96e3f0ccae4e39318ff0dc375b2',
-  '0x5f6c97c6ad7bdd0ae7e0dd4ca33a4ed3fdabd4d7',
-  '0x610b717796ad172b316836ac95a2ffad065ceab4',
-  '0x653477c392c16b0765603074f157314cc4f40c32',
-  '0x67d40ee1a85bf4a4bb7ffae16de985e8427b6b45',
-  '0x6acdfba02d390b97ac2b2d42a63e85293bcc160e',
-  '0x6be0ae71e6c41f2f9d0d1a3b8d0f75e6f6a0b46e',
-  '0x6bf694a291df3fec1f7e69701e3ab6c592435ae7',
-  '0x6f1ca141a28907f78ebaa64fb83a9088b02a8352',
-  '0x722122df12d4e14e13ac3b6895a86e84145b6967',
-  '0x723b78e67497e85279cb204544566f4dc5d2aca0',
-  '0x72a5843cc08275c8171e582972aa4fda8c397b2a',
-  '0x743494b60097a2230018079c02fe21a7b687eaa5',
-  '0x746aebc06d2ae31b71ac51429a19d54e797878e9',
-  '0x756c4628e57f7e7f8a459ec2752968360cf4d1aa',
-  '0x76d85b4c0fc497eecc38902397ac608000a06607',
-  '0x776198ccf446dfa168347089d7338879273172cf',
-  '0x77777feddddffc19ff86db637967013e6c6a116c',
-  '0x797d7ae72ebddcdea2a346c1834e04d1f8df102b',
-  '0x7db418b5d567a4e0e8c59ad71be1fce48f3e6107',
-  '0x7f19720a857f834887fc9a7bc0a0fbe7fc7f8102',
-  '0x7f367cc41522ce07553e823bf3be79a889debe1b',
-  '0x8281aa6795ade17c8973e1aedca380258bc124f9',
-  '0x833481186f16cece3f1eeea1a694c42034c3a0db',
-  '0x84443cfd09a48af6ef360c6976c5392ac5023a1f',
-  '0x8576acc5c05d6ce88f4e49bf65bdf0c62f91353c',
-  '0x8589427373d6d84e98730d7795d8f6f8731fda16',
-  '0x88fd245fedec4a936e700f9173454d1931b4c307',
-  '0x905b63fff465b9ffbf41dea908ceb12478ec7601',
-  '0x910cbd523d972eb0a6f4cae4618ad62622b39dbf',
-  '0x931546d9e66836abf687d2bc64b30407bac8c568',
-  '0x94a1b5cdb22c43faab4abeb5c74999895464ddaf',
-  '0x94be88213a387e992dd87de56950a9aef34b9448',
-  '0x94c92f096437ab9958fc0a37f09348f30389ae79',
-  '0x97b1043abd9e6fc31681635166d430a458d14f9c',
-  '0x9ad122c22b14202b4490edaf288fdb3c7cb3ff5e',
-  '0x9d095b9c373207cbc8bec0a03ad789fdc9dec911',
-  '0x9f4cda013e354b8fc285bf4b9a60460cee7f7ea9',
-  '0xa0e1c89ef1a489c9c7de96311ed5ce5d32c20e4b',
-  '0xa160cdab225685da1d56aa342ad8841c3b53f291',
-  '0xa5c2254e4253490c54cef0a4347fddb8f75a4998',
-  '0xa60c772958a3ed56c1f15dd055ba37ac8e523a0d',
-  '0xa7e5d5a720f06526557c513402f2e6b5fa20b008',
-  '0xaeaac358560e11f52454d997aaff2c5731b6f8a6',
-  '0xaf4c0b70b2ea9fb7487c7cbb37ada259579fe040',
-  '0xaf8d1839c3c67cf571aa74b5c12398d4901147b3',
-  '0xb04e030140b30c27bcdfaafffa98c57d80eda7b4',
-  '0xb1c8094b234dce6e03f10a5b673c1d8c69739a00',
-  '0xb20c66c4de72433f3ce747b58b86830c459ca911',
-  '0xb541fc07bc7619fd4062a54d96268525cbc6ffef',
-  '0xb6f5ec1a0a9cd1526536d3f0426c429529471f40',
-  '0xba214c1c1928a32bffe790263e38b4af9bfcd659',
-  '0xbb93e510bbcd0b7beb5a853875f9ec60275cf498',
-  '0xc455f7fd3e0e12afd51fba5c106909934d8a0e4a',
-  '0xca0840578f57fe71599d29375e16783424023357',
-  '0xcc84179ffd19a1627e79f8648d09e095252bc418',
-  '0xcee71753c9820f063b38fdbe4cfdaf1d3d928a80',
-  '0xd21be7248e0197ee08e0c20d4a96debdac3d20af',
-  '0xd47438c816c9e7f2e2888e060936a499af9582b3',
-  '0xd4b88df4d29f5cedd6857912842cff3b20c8cfa3',
-  '0xd5d6f8d9e784d0e26222ad3834500801a68d027d',
-  '0xd691f27f38b395864ea86cfc7253969b409c362d',
-  '0xd692fd2d0b2fbd2e52cfa5b5b9424bc981c30696',
-  '0xd82ed8786d7c69dc7e052f7a542ab047971e73d2',
-  '0xd882cfc20f52f2599d84b8e8d58c7fb62cfe344b',
-  '0xd8d7de3349ccaa0fde6298fe6d7b7d0d34586193',
-  '0xd90e2f925da726b50c4ed8d0fb90ad053324f31b',
-  '0xd96f2b1c14db8458374d9aca76e26c3d18364307',
-  '0xdcbeffbecce100cce9e4b153c4e15cb885643193',
-  '0xdd4c48c0b24039969fc16d1cdf626eab821d3384',
-  '0xdf231d99ff8b6c6cbf4e9b9a945cbacef9339178',
-  '0xdf3a408c53e5078af6e8fb2a85088d46ee09a61b',
-  '0xe7aa314c77f4233c18c6cc84384a9247c0cf367b',
-  '0xed6e0a7e4ac94d976eebfb82ccf777a3c6bad921',
-  '0xedc5d01286f99a066559f60a585406f3878a033e',
-  '0xf4b067dd14e95bab89be928c07cb22e3c94e0daa',
-  '0xf60dd140cff0706bae9cd734ac3ae76ad9ebc32a',
-  '0xf67721a2d8f736e75a49fdd7fad2e31d8676542a',
-  '0xf7b31119c2682c88d88d455dbb9d5932c65cf1be',
-  '0xfd8610d20aa15b7b2e3be39b396a1bc3516c7144',
-  '0xffbac21a641dcfe4552920138d90f3638b3c9fba',
-  '0x9c2bc757b66f24d60f016b6237f8cdd414a879fa',
-
-  // address for testing
-  '0x0143008e904feea7140c831585025bc174eb2f15'
-]
-
+const sanctionString = document.getElementById('sanctions').getAttribute('data-sanctions')
+const sanctionedAddresses = JSON.parse(sanctionString).map(a => a.toLowerCase())
 const sanctionText = 'The wallet address has been sanctioned by the U.S. Department of the Treasury. All U.S. persons are prohibited from accessing, receiving, accepting, or facilitating any property and interests in property (including use of any technology, software or software patch(es)) of these designated digital wallet addresses. These prohibitions include the making of any contribution or provision of funds, goods, or services by, to, or for the benefit of any blocked person and the receipt of any contribution or provision of funds, goods, or services from any such person and all designated digital asset wallets.'
 
 function isSanctioned (address) {
diff --git a/apps/block_scout_web/lib/block_scout_web/application.ex b/apps/block_scout_web/lib/block_scout_web/application.ex
index f156e32504ff..718c06f1d73e 100644
--- a/apps/block_scout_web/lib/block_scout_web/application.ex
+++ b/apps/block_scout_web/lib/block_scout_web/application.ex
@@ -9,10 +9,12 @@ defmodule BlockScoutWeb.Application do
 
   alias BlockScoutWeb.{CampaignBannerCache, LoggerBackend}
   alias BlockScoutWeb.Celo.MetricsCron
+  alias BlockScoutWeb.Celo.Telemetry.Instrumentation.Web
   alias BlockScoutWeb.Counters.{BlocksIndexedCounter, InternalTransactionsIndexedCounter}
   alias BlockScoutWeb.{Endpoint, RealtimeEventHandler}
 
   alias EthereumJSONRPC.Celo.Instrumentation, as: EthRPC
+  alias Explorer.Celo.SanctionCache
   alias Explorer.Celo.Telemetry.Instrumentation.{Api, Database, FlyPostgres}
   alias Explorer.Celo.Telemetry.MetricsCollector, as: CeloPrometheusCollector
 
@@ -31,10 +33,11 @@ defmodule BlockScoutWeb.Application do
         child_spec(Endpoint, []),
         {Absinthe.Subscription, Endpoint},
         {CeloPrometheusCollector,
-         metrics: [EthRPC.metrics(), Database.metrics(), FlyPostgres.metrics(), Api.metrics()]},
+         metrics: [EthRPC.metrics(), Database.metrics(), FlyPostgres.metrics(), Api.metrics(), Web.metrics()]},
         {RealtimeEventHandler, name: RealtimeEventHandler},
         {BlocksIndexedCounter, name: BlocksIndexedCounter},
         {CampaignBannerCache, name: CampaignBannerCache},
+        {SanctionCache, %{}},
         {InternalTransactionsIndexedCounter, name: InternalTransactionsIndexedCounter}
       ]
       |> cluster_process(Application.get_env(:block_scout_web, :environment))
diff --git a/apps/block_scout_web/lib/block_scout_web/celo/metrics_cron.ex b/apps/block_scout_web/lib/block_scout_web/celo/metrics_cron.ex
index 91585b93e14b..0509a0001cc0 100644
--- a/apps/block_scout_web/lib/block_scout_web/celo/metrics_cron.ex
+++ b/apps/block_scout_web/lib/block_scout_web/celo/metrics_cron.ex
@@ -6,7 +6,7 @@ defmodule BlockScoutWeb.Celo.MetricsCron do
 
   alias BlockScoutWeb.Celo.MetricsCron.TaskSupervisor
   alias Explorer.Celo.Metrics.DatabaseMetrics
-  alias Explorer.Celo.Telemetry
+  alias Explorer.Celo.{SanctionCache, Telemetry}
 
   def start_link(_) do
     GenServer.start_link(__MODULE__, :ok, name: __MODULE__)
@@ -28,7 +28,8 @@ defmodule BlockScoutWeb.Celo.MetricsCron do
   end
 
   @metric_operations [
-    :database_stats
+    :database_stats,
+    :sanction_stats
   ]
 
   @impl true
@@ -83,4 +84,9 @@ defmodule BlockScoutWeb.Celo.MetricsCron do
     tables_by_size
     |> Enum.each(fn {name, size} -> Telemetry.event([:db, :table_size], %{size: size}, %{name: name}) end)
   end
+
+  def sanction_stats do
+    num_sanctions = SanctionCache.get_sanction_list() |> length()
+    Telemetry.event([:web, :sanctioned_addresses], %{value: num_sanctions})
+  end
 end
diff --git a/apps/block_scout_web/lib/block_scout_web/celo/web_metrics.ex b/apps/block_scout_web/lib/block_scout_web/celo/web_metrics.ex
new file mode 100644
index 000000000000..b3a6c2c45369
--- /dev/null
+++ b/apps/block_scout_web/lib/block_scout_web/celo/web_metrics.ex
@@ -0,0 +1,16 @@
+defmodule BlockScoutWeb.Celo.Telemetry.Instrumentation.Web do
+  @moduledoc "Custom celo block_scout_web metric definitions"
+
+  alias Explorer.Celo.Telemetry.Instrumentation
+  use Instrumentation
+
+  def metrics do
+    [
+      last_value("num_sanctioned_addresses",
+        event_name: [:blockscout, :web, :sanctioned_addresses],
+        measurement: :value,
+        description: "Total number of sanctioned addresses blocked from UI interaction"
+      )
+    ]
+  end
+end
diff --git a/apps/block_scout_web/lib/block_scout_web/controllers/address_write_contract_controller.ex b/apps/block_scout_web/lib/block_scout_web/controllers/address_write_contract_controller.ex
index f77c4470d73f..8c06a6fc6af1 100644
--- a/apps/block_scout_web/lib/block_scout_web/controllers/address_write_contract_controller.ex
+++ b/apps/block_scout_web/lib/block_scout_web/controllers/address_write_contract_controller.ex
@@ -36,7 +36,8 @@ defmodule BlockScoutWeb.AddressWriteContractController do
       type: :regular,
       action: :write,
       custom_abi: custom_abi?,
-      exchange_rate: Market.get_exchange_rate(Explorer.coin()) || Token.null()
+      exchange_rate: Market.get_exchange_rate(Explorer.coin()) || Token.null(),
+      sanctions: Explorer.Celo.SanctionCache.get_sanction_list()
     ]
 
     with {:ok, address_hash} <- Chain.string_to_address_hash(address_hash_string),
diff --git a/apps/block_scout_web/lib/block_scout_web/controllers/address_write_proxy_controller.ex b/apps/block_scout_web/lib/block_scout_web/controllers/address_write_proxy_controller.ex
index 523c1c0fdf69..0a3d1dd67e3b 100644
--- a/apps/block_scout_web/lib/block_scout_web/controllers/address_write_proxy_controller.ex
+++ b/apps/block_scout_web/lib/block_scout_web/controllers/address_write_proxy_controller.ex
@@ -37,7 +37,8 @@ defmodule BlockScoutWeb.AddressWriteProxyController do
         exchange_rate: Market.get_exchange_rate(Explorer.coin()) || Token.null(),
         counters_path: address_path(conn, :address_counters, %{"id" => Address.checksum(address_hash)}),
         tags: get_address_tags(address_hash, current_user(conn)),
-        celo_epoch: EpochUtil.get_address_summary(address)
+        celo_epoch: EpochUtil.get_address_summary(address),
+        sanctions: Explorer.Celo.SanctionCache.get_sanction_list()
       )
     else
       _ ->
diff --git a/apps/block_scout_web/lib/block_scout_web/templates/address_write_contract/index.html.eex b/apps/block_scout_web/lib/block_scout_web/templates/address_write_contract/index.html.eex
index 4cb36fc3a73f..17991bf3e3ba 100644
--- a/apps/block_scout_web/lib/block_scout_web/templates/address_write_contract/index.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/address_write_contract/index.html.eex
@@ -13,7 +13,12 @@
     celo_epoch: @celo_epoch
   %>
 
+  <%
+    {:ok, sanctions} = Jason.encode(@sanctions)
+  %>
+
   <div class="card">
+    <div id="sanctions" data-sanctions=<%= sanctions %> hidden ></div>
     <%= render BlockScoutWeb.AddressView, "_tabs.html", address: @address, is_proxy: is_proxy, conn: @conn %>
     <div class="card-misc-container">
       <%= render BlockScoutWeb.SmartContractView, "_connect_container.html" %>
diff --git a/apps/block_scout_web/lib/block_scout_web/templates/address_write_proxy/index.html.eex b/apps/block_scout_web/lib/block_scout_web/templates/address_write_proxy/index.html.eex
index 6e84b630f323..2ff4b34c08f2 100644
--- a/apps/block_scout_web/lib/block_scout_web/templates/address_write_proxy/index.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/address_write_proxy/index.html.eex
@@ -13,8 +13,13 @@
     celo_epoch: @celo_epoch
   %>
 
+  <%
+    {:ok, sanctions} = Jason.encode(@sanctions)
+  %>
+
   <div class="card">
     <%= render BlockScoutWeb.AddressView, "_tabs.html", address: @address, is_proxy: is_proxy, conn: @conn %>
+    <div id="sanctions" data-sanctions=<%= sanctions %> hidden />
     <!-- loaded via AJAX -->
     <div class="card-body" data-smart-contract-functions data-hash="<%= to_string(@address.hash) %>" data-type="<%= @type %>" data-action="<%= @action %>" data-url="<%= smart_contract_path(@conn, :index) %>">
       <div>
diff --git a/apps/block_scout_web/lib/block_scout_web/templates/smart_contract/_functions.html.eex b/apps/block_scout_web/lib/block_scout_web/templates/smart_contract/_functions.html.eex
index 53b0aaaeaea7..50ebe0e374cb 100644
--- a/apps/block_scout_web/lib/block_scout_web/templates/smart_contract/_functions.html.eex
+++ b/apps/block_scout_web/lib/block_scout_web/templates/smart_contract/_functions.html.eex
@@ -57,7 +57,7 @@
                           @contract_abi
                         end
                     end %>
-        <form class="form-inline" data-function-form data-action="<%= if @action == "write", do: :write, else: :read %>" data-type="<%= @contract_type %>" data-url="<%= smart_contract_path(@conn, :show, Address.checksum(@address.hash)) %>" data-contract-address="<%= @address.hash %>" data-contract-abi="<%= function_abi %>" data-implementation-abi="<%= function_abi %>" data-chain-id="<%= Explorer.Chain.Cache.NetVersion.get_version() %>" data-custom-abi="<%= if assigns[:custom_abi], do: true, else: false %>">
+        <form class="form-inline" data-function-form data-action="<%= if @action == "write", do: :write, else: :read %>" data-type="<%= @contract_type %>" data-url="<%= smart_contract_path(@conn, :show, Address.checksum(@address.hash)) %>" data-contract-address="<%= @address.hash %>" data-contract-abi="<%= function_abi %>" data-implementation-abi="<%= function_abi %>" data-chain-id="<%= Explorer.Chain.Cache.NetVersion.get_version() %>" data-sanctions="<%= %>" data-custom-abi="<%= if assigns[:custom_abi], do: true, else: false %>">
           <input type="hidden" name="function_name" value='<%= function["name"] %>' />
           <input type="hidden" name="method_id" value='<%= function["method_id"] %>' />
 
diff --git a/apps/block_scout_web/priv/gettext/default.pot b/apps/block_scout_web/priv/gettext/default.pot
index 504985574134..0a115d42dfc8 100644
--- a/apps/block_scout_web/priv/gettext/default.pot
+++ b/apps/block_scout_web/priv/gettext/default.pot
@@ -919,7 +919,7 @@ msgid "Current transaction state: Success, Failed (Error), or Pending (In Proces
 msgstr ""
 
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:29
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:27
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:32
 #, elixir-autogen, elixir-format
 msgid "Custom"
 msgstr ""
@@ -933,7 +933,7 @@ msgid "Custom ABI"
 msgstr ""
 
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:34
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:32
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:37
 #, elixir-autogen, elixir-format
 msgid "Custom ABI from account"
 msgstr ""
@@ -1569,9 +1569,9 @@ msgstr ""
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:50
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:58
 #: lib/block_scout_web/templates/address_read_proxy/index.html.eex:21
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:48
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:56
-#: lib/block_scout_web/templates/address_write_proxy/index.html.eex:21
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:53
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:61
+#: lib/block_scout_web/templates/address_write_proxy/index.html.eex:26
 #: lib/block_scout_web/templates/tokens/contract/index.html.eex:17
 #, elixir-autogen, elixir-format
 msgid "Loading..."
@@ -2987,7 +2987,7 @@ msgid "Value"
 msgstr ""
 
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:26
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:24
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:29
 #: lib/block_scout_web/templates/verified_contracts/_tile.html.eex:49
 #: lib/block_scout_web/templates/verified_contracts/index.html.eex:74
 #, elixir-autogen, elixir-format
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 1b29374f8e38..efed48c6db34 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
@@ -919,7 +919,7 @@ msgid "Current transaction state: Success, Failed (Error), or Pending (In Proces
 msgstr ""
 
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:29
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:27
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:32
 #, elixir-autogen, elixir-format
 msgid "Custom"
 msgstr ""
@@ -933,7 +933,7 @@ msgid "Custom ABI"
 msgstr ""
 
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:34
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:32
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:37
 #, elixir-autogen, elixir-format
 msgid "Custom ABI from account"
 msgstr ""
@@ -1569,9 +1569,9 @@ msgstr ""
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:50
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:58
 #: lib/block_scout_web/templates/address_read_proxy/index.html.eex:21
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:48
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:56
-#: lib/block_scout_web/templates/address_write_proxy/index.html.eex:21
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:53
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:61
+#: lib/block_scout_web/templates/address_write_proxy/index.html.eex:26
 #: lib/block_scout_web/templates/tokens/contract/index.html.eex:17
 #, elixir-autogen, elixir-format
 msgid "Loading..."
@@ -2987,7 +2987,7 @@ msgid "Value"
 msgstr ""
 
 #: lib/block_scout_web/templates/address_read_contract/index.html.eex:26
-#: lib/block_scout_web/templates/address_write_contract/index.html.eex:24
+#: lib/block_scout_web/templates/address_write_contract/index.html.eex:29
 #: lib/block_scout_web/templates/verified_contracts/_tile.html.eex:49
 #: lib/block_scout_web/templates/verified_contracts/index.html.eex:74
 #, elixir-autogen, elixir-format
diff --git a/apps/explorer/lib/explorer/celo/sanction_cache.ex b/apps/explorer/lib/explorer/celo/sanction_cache.ex
new file mode 100644
index 000000000000..7f1037c4466f
--- /dev/null
+++ b/apps/explorer/lib/explorer/celo/sanction_cache.ex
@@ -0,0 +1,79 @@
+defmodule Explorer.Celo.SanctionCache do
+  @moduledoc "A cache to manage addresses blocked for interaction"
+
+  use GenServer
+  require Logger
+
+  @spec start_link(term()) :: GenServer.on_start()
+  def start_link(params \\ %{}) do
+    GenServer.start_link(__MODULE__, params, name: __MODULE__)
+  end
+
+  @impl true
+  def init(params) do
+    state = Map.get(params, :initial_state, %{list: [], refresh: :timer.minutes(60)})
+
+    {:ok, state, {:continue, :update_with_public_list}}
+  end
+
+  @impl true
+  def handle_continue(:update_with_public_list, %{refresh: refresh_time} = state) do
+    sanction_list = fetch_list()
+
+    Process.send_after(self(), :refresh, refresh_time)
+
+    {:noreply, %{state | list: sanction_list}}
+  end
+
+  def fetch_list do
+    sanctions_url =
+      :explorer
+      |> Application.get_env(:celo_sanctions)
+      |> Keyword.get(:url, "https://celo-org.github.io/compliance/ofac.sanctions.json")
+
+    Logger.info("Fetching sanctioned address list from #{sanctions_url}")
+
+    {:ok, response} =
+      case HTTPoison.get(sanctions_url, [], follow_redirect: true, timeout: 5_000) do
+        {:ok, %HTTPoison.Response{body: body, status_code: 200}} ->
+          {:ok, body}
+
+        e ->
+          {:error, inspect(e)}
+      end
+
+    sanction_list = response |> Jason.decode!()
+
+    Logger.info("Retrieved #{length(sanction_list)} sanctioned addresses (md5 #{hash_list(sanction_list)}")
+
+    sanction_list
+  end
+
+  @doc "printable md5 hash of list contents to assert changed values"
+  def hash_list(list) do
+    :crypto.hash(:md5, :erlang.term_to_binary(list)) |> Base.encode16()
+  end
+
+  @impl true
+  def handle_call(:get_sanction_list, _from, %{list: list} = state) do
+    {:reply, list, state}
+  end
+
+  @impl true
+  def handle_cast({:add_address, address}, %{list: list} = state) do
+    {:noreply, %{state | list: [address | list]}}
+  end
+
+  @impl true
+  def handle_info(:refresh, state) do
+    {:noreply, state, {:continue, :update_with_public_list}}
+  end
+
+  def get_sanction_list do
+    GenServer.call(__MODULE__, :get_sanction_list)
+  end
+
+  def add_address(address) do
+    GenServer.cast(__MODULE__, {:add_address, address})
+  end
+end
diff --git a/config/runtime.exs b/config/runtime.exs
index e875c0360204..e78184ff4195 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -403,6 +403,9 @@ config :explorer, :token_id_migration,
   concurrency: token_id_migration_concurrency,
   batch_size: token_id_migration_batch_size
 
+config :explorer, :celo_sanctions,
+  url: System.get_env("CELO_SANCTIONS_URL", "https://celo-org.github.io/compliance/ofac.sanctions.json")
+
 ###############
 ### Indexer ###
 ###############