add blockbook

Author: 2qx

README.md

@@ -240,6 +240,7 @@ Bitcoin Cash is supported on hundreds of exchanges, these are a few.
 
 - 🔵 [Bitcoin Cash Explorer](https://explorer.salemkode.com/) [[code]](https://github.com/salemkode/explorer) - A Bitcoin Cash Explorer with CashTokens, by SalemKode.
 - 🔵 [3xpl.com BCH Explorer](https://3xpl.com/bitcoin-cash) [[code]](https://github.com/3xplcom)- A fast ad-free universal block explorer.
+- 🔵 [Pat's Blockbook Explorer][https://blockbook.pat.mn/] [[code]](https://github.com/mainnet-pat/blockbook) - A backend and explorer with CashToken support.
 - [BCH Explorer](https://explorer.melroy.org/) [[code]](https://gitlab.melroy.org/bitcoincash/explorer) - Bitcoin Cash Explorer by Melroy van den Berg
 - 🔵 [Cashflow](https://cashflow.dev) [[code]](https://github.com/rnbrady/cashflow) - A visual transaction explorer.
 - [Blockchair BCH Explorer](https://blockchair.com/bitcoin-cash) - Universal blockchain explorer and search engine.