From dcbe6a5204a6962a3af9ea90db5e61caface12fd Mon Sep 17 00:00:00 2001
From: kclowes <kclowes@users.noreply.github.com>
Date: Thu, 8 Sep 2022 13:29:12 -0600
Subject: [PATCH 1/2] Add Sepolia testnet

---
 ethpm/constants.py                     |  1 +
 newsfragments/2639.feature.rst         |  1 +
 tests/ethpm/_utils/test_chain_utils.py |  1 +
 web3/auto/infura/endpoints.py          |  1 +
 web3/auto/infura/sepolia.py            | 15 +++++++++++++++
 5 files changed, 19 insertions(+)
 create mode 100644 newsfragments/2639.feature.rst
 create mode 100644 web3/auto/infura/sepolia.py

diff --git a/ethpm/constants.py b/ethpm/constants.py
index c895c4a591..c6818e5210 100644
--- a/ethpm/constants.py
+++ b/ethpm/constants.py
@@ -15,4 +15,5 @@
     3: "ropsten",
     4: "rinkeby",
     5: "goerli",
+    11155111: "sepolia",
 }
diff --git a/newsfragments/2639.feature.rst b/newsfragments/2639.feature.rst
new file mode 100644
index 0000000000..f839021314
--- /dev/null
+++ b/newsfragments/2639.feature.rst
@@ -0,0 +1 @@
+Add Sepolia auto provider
diff --git a/tests/ethpm/_utils/test_chain_utils.py b/tests/ethpm/_utils/test_chain_utils.py
index 92c2b00e52..096d8a51a1 100644
--- a/tests/ethpm/_utils/test_chain_utils.py
+++ b/tests/ethpm/_utils/test_chain_utils.py
@@ -49,6 +49,7 @@ def test_parse_BIP122_uri(value, expected_resource_type):
         (3, True),
         (4, True),
         (5, True),
+        (11155111, True),
         (2, False),
         ("1", False),
         ({}, False),
diff --git a/web3/auto/infura/endpoints.py b/web3/auto/infura/endpoints.py
index 55258f9a57..fa7ecb5df8 100644
--- a/web3/auto/infura/endpoints.py
+++ b/web3/auto/infura/endpoints.py
@@ -20,6 +20,7 @@
 INFURA_ROPSTEN_DOMAIN = "ropsten.infura.io"
 INFURA_GOERLI_DOMAIN = "goerli.infura.io"
 INFURA_RINKEBY_DOMAIN = "rinkeby.infura.io"
+INFURA_SEPOLIA_DOMAIN = "sepolia.infura.io"
 
 WEBSOCKET_SCHEME = "wss"
 HTTP_SCHEME = "https"
diff --git a/web3/auto/infura/sepolia.py b/web3/auto/infura/sepolia.py
new file mode 100644
index 0000000000..d7f128800c
--- /dev/null
+++ b/web3/auto/infura/sepolia.py
@@ -0,0 +1,15 @@
+from web3 import Web3
+from web3.providers.auto import (
+    load_provider_from_uri,
+)
+
+from .endpoints import (
+    INFURA_SEPOLIA_DOMAIN,
+    build_http_headers,
+    build_infura_url,
+)
+
+_headers = build_http_headers()
+_infura_url = build_infura_url(INFURA_SEPOLIA_DOMAIN)
+
+w3 = Web3(load_provider_from_uri(_infura_url, _headers))

From 5957671fe20a8fefde134cfab19d04be8de46773 Mon Sep 17 00:00:00 2001
From: kclowes <kclowes@users.noreply.github.com>
Date: Wed, 14 Sep 2022 11:12:14 -0600
Subject: [PATCH 2/2] Add Sepolia to ethpm validation error message

---
 ethpm/validation/uri.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ethpm/validation/uri.py b/ethpm/validation/uri.py
index f162e81d1c..89f13ecc7d 100644
--- a/ethpm/validation/uri.py
+++ b/ethpm/validation/uri.py
@@ -103,7 +103,7 @@ def validate_registry_uri_authority(auth: str) -> None:
     if not is_supported_chain_id(to_int(text=chain_id)):
         raise EthPMValidationError(
             f"Chain ID: {chain_id} is not supported. Supported chain ids include: "
-            "1 (mainnet), 3 (ropsten), 4 (rinkeby), and 5 (goerli)"
+            "1 (mainnet), 3 (ropsten), 4 (rinkeby), 5 (goerli), and 11155111 (sepolia)."
             "Please try again with a valid registry URI."
         )