diff --git a/README.md b/README.md
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@@ -438,7 +438,7 @@ Blockstack is a network for decentralized applications where users own their ide
 
 ### Blockstack[**^**](#Contents) 
 ![](https://i.imgur.com/ZZx8lfR.png)
-* [Blockstack](https://blockstack.org/) • [[**G**](https://github.com/blockstack)]ithub • [[**F**](https://forum.blockstack.org/)]orum • [[**B**](https://blockstack.org/blog)]log • [[**T**](https://twitter.com/blockstack)]witter • [[**W**](https://blockstack.org/whitepaper.pdf)]hitepaper
+* [Blockstack](https://blockstack.org/) • [[**G**](https://github.com/blockstack)]ithub • [[**F**](https://forum.blockstack.org/)]orum • [[**B**](https://blockstack.org/blog)]log • [[**T**](https://twitter.com/blockstack)]witter • [[**W**](https://blockstack.org/whitepaper.pdf)]hitepaper • [[**bitcoinwiki**](https://en.bitcoinwiki.org/wiki/BlockStack)]
    * a network of computers that collectively maintain a global registry of domain names, public keys, and cryptographic hashes. With this registry, Blockstack serves as a decentralized domain name system (DNS) and a decentralized public key infrastructure (PKI).
    * [Onename](https://onename.com/) — "a product built on Blockstack that allows people to register identities"
    * [Blockstack DID Spec](https://github.com/blockstack/blockstack-core/blob/master/docs/blockstack-did-spec.md)[**[ϟ](https://forum.blockstack.org/t/did-method-at-identity-foundation/4287/9)**]