From cf365d9f88c16d4675dde886a517d81e53e67ffd Mon Sep 17 00:00:00 2001
From: Ayush Shukla <shuklaayush247@gmail.com>
Date: Sun, 4 Jul 2021 20:18:36 +0530
Subject: [PATCH 1/2] fix: correct polygon mainnet id

---
 brownie/data/network-config.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/brownie/data/network-config.yaml b/brownie/data/network-config.yaml
index 468999529..10591abe8 100644
--- a/brownie/data/network-config.yaml
+++ b/brownie/data/network-config.yaml
@@ -64,9 +64,9 @@ live:
         explorer: https://api.ftmscan.com/api
   - name: Polygon
     networks:
-      - name: Mainnet
+      - name: Mainnet (Infura)
         chainid: 137
-        id: polygon-main (Infura)
+        id: polygon-main
         host: https://polygon-mainnet.infura.io/v3/$WEB3_INFURA_PROJECT_ID
         explorer: https://api.polygonscan.com/api
       - name: Mumbai Testnet (Infura)

From 296162268df51de4137aa8d8b7cfc1d451a7b44b Mon Sep 17 00:00:00 2001
From: Ayush Shukla <shuklaayush247@gmail.com>
Date: Sun, 4 Jul 2021 20:21:19 +0530
Subject: [PATCH 2/2] feat: add polygonscan block explorer

---
 CHANGELOG.md                |  1 +
 brownie/network/contract.py | 16 +++++++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c9aa61f20..d353b130c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased](https://github.com/eth-brownie/brownie)
 - Add polygon network integration ([#1119](https://github.com/eth-brownie/brownie/pull/1119))
 - Fixed subcalls to empty accounts not appearing in the subcalls property of TransactionReceipts ([#1106](https://github.com/eth-brownie/brownie/pull/1106))
+- Add support for `POLYGONSCAN_TOKEN` env var ([#1135](https://github.com/eth-brownie/brownie/pull/1135))
 
 ### Added
 - Added `LocalAccount.sign_message` method to sign `EIP712Message` objects ([#1097](https://github.com/eth-brownie/brownie/pull/1097))
diff --git a/brownie/network/contract.py b/brownie/network/contract.py
index 81f5bba37..ba10ade4d 100644
--- a/brownie/network/contract.py
+++ b/brownie/network/contract.py
@@ -376,7 +376,11 @@ def publish_source(self, contract: Any, silent: bool = False) -> bool:
         """Flatten contract and publish source on the selected explorer"""
 
         # Check required conditions for verifying
-        explorer_tokens = {"etherscan": "ETHERSCAN_TOKEN", "bscscan": "BSCSCAN_TOKEN"}
+        explorer_tokens = {
+            "etherscan": "ETHERSCAN_TOKEN",
+            "bscscan": "BSCSCAN_TOKEN",
+            "polygonscan": "POLYGONSCAN_TOKEN",
+        }
         url = CONFIG.active_network.get("explorer")
         if url is None:
             raise ValueError("Explorer API not set for this network")
@@ -1878,6 +1882,16 @@ def _fetch_from_explorer(address: str, action: str, silent: bool) -> Dict:
                 "as the environment variable $BSCSCAN_TOKEN",
                 BrownieEnvironmentWarning,
             )
+    elif "polygonscan" in url:
+        if os.getenv("POLYGONSCAN_TOKEN"):
+            params["apiKey"] = os.getenv("POLYGONSCAN_TOKEN")
+        elif not silent:
+            warnings.warn(
+                "No PolygonScan API token set. You may experience issues with rate limiting. "
+                "Visit https://polygonscan.com/register to obtain a token, and then store it "
+                "as the environment variable $POLYGONSCAN_TOKEN",
+                BrownieEnvironmentWarning,
+            )
 
     if not silent:
         print(