diff --git a/app/coins/btc.js b/app/coins/btc.js
index 7e00c7c..a456268 100644
--- a/app/coins/btc.js
+++ b/app/coins/btc.js
@@ -57,7 +57,7 @@ module.exports = {
 	siteDescriptionHtml:"<b>BTC Explorer</b> is <a href='https://github.com/janoside/btc-rpc-explorer). If you run your own [Bitcoin Full Node](https://bitcoin.org/en/full-node), **BTC Explorer** can easily run alongside it, communicating via RPC calls. See the project [ReadMe](https://github.com/janoside/btc-rpc-explorer) for a list of features and instructions for running.",
 	nodeTitle:"Bitcoin Full Node",
 	nodeUrl:"https://bitcoin.org/en/full-node",
-	demoSiteUrl: "https://btc.chaintools.io",
+	demoSiteUrl: "https://explorer.btc21.org",
 	miningPoolsConfigUrls:[
 		"https://raw.githubusercontent.com/btccom/Blockchain-Known-Pools/master/pools.json",
 		"https://raw.githubusercontent.com/blockchain/Blockchain-Known-Pools/master/pools.json"
diff --git a/app/config.js b/app/config.js
index 736f4b3..1f0dd97 100644
--- a/app/config.js
+++ b/app/config.js
@@ -152,7 +152,7 @@ module.exports = {
 				{
 					title:"Related Sites",
 					links:[
-						{name: "Bitcoin Explorer", url:"https://btc.chaintools.io", imgUrl:"/img/logo/btc.svg"},
+						{name: "Bitcoin Explorer", url:"https://explorer.btc21.org", imgUrl:"/img/logo/btc.svg"},
 						{name: "LND Admin", url:"https://lnd-admin.chaintools.io", imgUrl:"/img/logo/lnd-admin.png"},
 						//{name: "Litecoin Explorer", url:"https://ltc.chaintools.io", imgUrl:"/img/logo/ltc.svg"},
 						//{name: "Lightning Explorer", url:"https://lightning.chaintools.io", imgUrl:"/img/logo/lightning.svg"},
@@ -183,14 +183,15 @@ module.exports = {
 	donations:{
 		addresses:{
 			coins:["BTC"],
-			sites:{"BTC":"https://btc.chaintools.io"},
+			sites:{"BTC":"https://explorer.btc21.org"},
 
 			"BTC":{address:"3NPGpNyLLmVKCEcuipBs7G4KpQJoJXjDGe"}
 		},
 		btcpayserver:{
-			host:"https://btcpay.chaintools.io",
-			storeId:"DUUExHMvKNAFukrJZHCShMhwZvfPq87QnkUhvE6h5kh2",
-			notifyEmail:"chaintools.io@gmail.com"
+			host:"https://donate.btc21.org",
+			storeId:"26k74KRh7RYmJcMDqvmdKTb2h3991FMTZSM4GJHnX6st",
+			notifyEmail:"chaintools.io@gmail.com",
+			customAmountUrl: "https://donate.btc21.org/apps/2TBP2GuQnYXGBiHQkmf4jNuMh6eN/pos"
 		}
 	}
 };
diff --git a/views/layout.pug b/views/layout.pug
index 9503ed0..0a847ab 100644
--- a/views/layout.pug
+++ b/views/layout.pug
@@ -182,7 +182,7 @@ html(lang="en")
 									if (coinConfig.demoSiteUrl)
 										a(href=coinConfig.demoSiteUrl) #{coinConfig.demoSiteUrl}
 									else
-										a(href="https://btc-explorer.chaintools.io") https://btc-explorer.chaintools.io
+										a(href="https://explorer.btc21.org") https://explorer.btc21.org
 									
 									div(class="mt-2")
 										- var demoSiteCoins = ["BTC"];