diff --git a/src/custom/bridge-to-base/index.js b/src/custom/bridge-to-base/index.js
new file mode 100644
index 00000000..820e2939
--- /dev/null
+++ b/src/custom/bridge-to-base/index.js
@@ -0,0 +1,28 @@
+export const fetchToken = async (chainId, { contract, tokenId }) => {
+  return {
+    contract,
+    tokenId,
+    collection: contract.toLowerCase(),
+    slug: "bridge-to-base",
+    name: `Bridge to Base ${tokenId}`,
+    description:
+      "Base is for everyone, everywhere. Bridge to Base to join us as the journey begins.\\n\\nThis NFT commemorates you being early — you’re one of the first to teleport into the next generation of the internet as we work to bring billions of people onchain.\\n\\nIt’s Onchain Summer and we’re excited to celebrate with you.",
+    imageUrl:
+      "https://lh3.googleusercontent.com/CsTRDND79fhWyy0icODaBNmUANFQlDPTmFekuJTkFV7U27BtsMtO-iabwbibkntLumFOSzWeJGCFXLNEw0lZH-ZU-WlID1jdVA",
+    mediaUrl: null,
+    attributes: [
+      {
+        key: "number",
+        value: `${tokenId}`,
+        kind: "string",
+        rank: 1,
+      },
+      {
+        key: "name",
+        value: "Bridge to Base",
+        kind: "string",
+        rank: 1,
+      },
+    ],
+  };
+};
diff --git a/src/custom/index.js b/src/custom/index.js
index 0b804688..d059472b 100644
--- a/src/custom/index.js
+++ b/src/custom/index.js
@@ -1,4 +1,5 @@
 import * as copyrightInfringement from "./copyright-infringement";
+import * as bridgeToBase from "./bridge-to-base";
 
 export const hasCustomCollectionHandler = (chainId, contract) =>
   Boolean(customCollection[`${chainId},${contract}`]);
@@ -49,6 +50,13 @@ customCollection["1,0x6c4a0c95d02366a8be460108e222ddf58451d1c0"] = copyrightInfr
 customCollection["1,0x32d753b840b475832950f6ad140b403f4a467f2c"] = copyrightInfringement;
 customCollection["1,0xa6edad01bf197b0ff7c1a8a456731bd2081d6940"] = copyrightInfringement;
 customCollection["1,0x254f0ed9a40b81402c86dcb5bc064dc036a5b7cc"] = copyrightInfringement;
+customCollection["1,0x6ca95b029e1bca507c87d42b46157a76dab54ec2"] = copyrightInfringement;
+customCollection["1,0xd6cc89ef815cfd8f30e3fe8319b3983351c93d31"] = copyrightInfringement;
+customCollection["1,0xba60a90d76d44819acb8452a9f89632d57f5692f"] = copyrightInfringement;
+customCollection["1,0x6fd6679c599afc1b78985a614adc8a3f8c02eb6b"] = copyrightInfringement;
+customCollection["1,0x552ea1b419d4ac9f5ec2048979b1eb29406ee6eb"] = copyrightInfringement;
+customCollection["1,0x6dbc1f3961fd606feaf5fb73245aa4b2674d1e66"] = copyrightInfringement;
+customCollection["1,0x6c2b0a6269d09d0d22999e68c7be174e5a026c7e"] = copyrightInfringement;
 
 customCollection["137,0xcf77e25cf1bfc57634bb7b95887b7120935a0d7f"] = copyrightInfringement;
 customCollection["137,0x27bde07c5d651856c483583899ed6823da3648b7"] = copyrightInfringement;
@@ -64,6 +72,7 @@ customCollection["137,0xe193c12252c12de24566ed7013004419c162cc81"] = copyrightIn
 customCollection["137,0x6d4cf64abac53c8a447e93e662b2e806ba9bb708"] = copyrightInfringement;
 customCollection["137,0x18aea30b288d8df78eb0eb6e04b984238abde97e"] = copyrightInfringement;
 customCollection["137,0x85efb3603ec84a0fa18f512a3a017422e893c5da"] = copyrightInfringement;
+customCollection["137,0xc21acefb1fc169c3904b56eab6f7b4872c585419"] = copyrightInfringement;
 
 customCollection["5,0x002cb3af46ad013a98b174a61711c0f725084bc0"] = copyrightInfringement;
 
@@ -102,6 +111,13 @@ custom["1,0x6c4a0c95d02366a8be460108e222ddf58451d1c0"] = copyrightInfringement;
 custom["1,0x32d753b840b475832950f6ad140b403f4a467f2c"] = copyrightInfringement;
 custom["1,0xa6edad01bf197b0ff7c1a8a456731bd2081d6940"] = copyrightInfringement;
 custom["1,0x254f0ed9a40b81402c86dcb5bc064dc036a5b7cc"] = copyrightInfringement;
+custom["1,0x6ca95b029e1bca507c87d42b46157a76dab54ec2"] = copyrightInfringement;
+custom["1,0xd6cc89ef815cfd8f30e3fe8319b3983351c93d31"] = copyrightInfringement;
+custom["1,0xba60a90d76d44819acb8452a9f89632d57f5692f"] = copyrightInfringement;
+custom["1,0x6fd6679c599afc1b78985a614adc8a3f8c02eb6b"] = copyrightInfringement;
+custom["1,0x552ea1b419d4ac9f5ec2048979b1eb29406ee6eb"] = copyrightInfringement;
+custom["1,0x6dbc1f3961fd606feaf5fb73245aa4b2674d1e66"] = copyrightInfringement;
+custom["1,0x6c2b0a6269d09d0d22999e68c7be174e5a026c7e"] = copyrightInfringement;
 
 custom["137,0xcf77e25cf1bfc57634bb7b95887b7120935a0d7f"] = copyrightInfringement;
 custom["137,0x27bde07c5d651856c483583899ed6823da3648b7"] = copyrightInfringement;
@@ -117,8 +133,12 @@ custom["137,0xe193c12252c12de24566ed7013004419c162cc81"] = copyrightInfringement
 custom["137,0x6d4cf64abac53c8a447e93e662b2e806ba9bb708"] = copyrightInfringement;
 custom["137,0x18aea30b288d8df78eb0eb6e04b984238abde97e"] = copyrightInfringement;
 custom["137,0x85efb3603ec84a0fa18f512a3a017422e893c5da"] = copyrightInfringement;
+custom["137,0xc21acefb1fc169c3904b56eab6f7b4872c585419"] = copyrightInfringement;
 
 custom["5,0x002cb3af46ad013a98b174a61711c0f725084bc0"] = copyrightInfringement;
 
 // Emblem Vault - temporary to prevent trading during migration
 custom["1,0x82c7a8f707110f5fbb16184a5933e9f78a34c6ab"] = copyrightInfringement;
+
+// Bridge To Base
+custom["8453,0xea2a41c02fa86a4901826615f9796e603c6a4491"] = bridgeToBase;
diff --git a/src/extend/index.js b/src/extend/index.js
index 198c500b..58ed3b84 100644
--- a/src/extend/index.js
+++ b/src/extend/index.js
@@ -135,6 +135,7 @@ extendCollection["1,0x0a1bbd57033f57e7b6743621b79fcb9eb2ce3676"] = artblocksEngi
 extendCollection["1,0x942bc2d3e7a589fe5bd4a5c6ef9727dfd82f5c8a"] = artblocksEngine;
 extendCollection["1,0x32d4be5ee74376e08038d652d4dc26e62c67f436"] = artblocksEngine;
 extendCollection["1,0xea698596b6009a622c3ed00dd5a8b5d1cae4fc36"] = artblocksEngine;
+extendCollection["1,0x145789247973c5d612bf121e9e4eef84b63eb707"] = artblocksEngine;
 extendCollection["5,0xe480a895de49b49e37a8f0a8bd7e07fc9844cdb9"] = artblocksEngine;
 extendCollection["42161,0x47a91457a3a1f700097199fd63c039c4784384ab"] = artblocksEngine;
 
@@ -214,6 +215,8 @@ extend["1,0x2a86c5466f088caebf94e071a77669bae371cd87"] = feralFile;
 
 // Boys of Summer
 extend["5,0x7ba399e03ca7598b2e6d56ba97961282edc9ad65"] = boysOfSummer;
+extend["1,0xc92ab2dff994dd77c0d2fe09f21d5cf9ea2bcc0a"] = boysOfSummer;
+
 // BrainDrops
 extend["1,0xdfde78d2baec499fe18f2be74b6c287eed9511d7"] = brainDrops;
 
@@ -243,6 +246,7 @@ extend["1,0x0a1bbd57033f57e7b6743621b79fcb9eb2ce3676"] = artblocksEngine;
 extend["1,0x942bc2d3e7a589fe5bd4a5c6ef9727dfd82f5c8a"] = artblocksEngine;
 extend["1,0x32d4be5ee74376e08038d652d4dc26e62c67f436"] = artblocksEngine;
 extend["1,0xea698596b6009a622c3ed00dd5a8b5d1cae4fc36"] = artblocksEngine;
+extend["1,0x145789247973c5d612bf121e9e4eef84b63eb707"] = artblocksEngine;
 extend["5,0xe480a895de49b49e37a8f0a8bd7e07fc9844cdb9"] = artblocksEngine;
 extend["42161,0x47a91457a3a1f700097199fd63c039c4784384ab"] = artblocksEngine;
 
diff --git a/src/fetchers/simplehash.js b/src/fetchers/simplehash.js
index 02509947..664532eb 100644
--- a/src/fetchers/simplehash.js
+++ b/src/fetchers/simplehash.js
@@ -26,6 +26,10 @@ const getNetworkName = (chainId) => {
     return "ethereum-goerli";
   }
 
+  if (network == "mumbai") {
+    return "polygon-mumbai";
+  }
+
   return network;
 };
 
@@ -101,9 +105,10 @@ export const fetchCollection = async (chainId, { contract, tokenId }) => {
 
 export const fetchTokens = async (chainId, tokens) => {
   const network = getNetworkName(chainId);
-
   const searchParams = new URLSearchParams();
+
   const nftIds = tokens.map(({ contract, tokenId }) => `${network}.${contract}.${tokenId}`);
+
   searchParams.append("nft_ids", nftIds.join(","));
 
   const url = `https://api.simplehash.com/api/v0/nfts/assets?${searchParams.toString()}`;
@@ -128,7 +133,6 @@ export const fetchTokens = async (chainId, tokens) => {
 
 export const fetchContractTokens = async (chainId, contract, continuation) => {
   const network = getNetworkName(chainId);
-
   const searchParams = new URLSearchParams();
   if (continuation) {
     searchParams.append("cursor", continuation);