diff --git a/index.html b/index.html
index b0eb7af..84039d7 100644
--- a/index.html
+++ b/index.html
@@ -115,7 +115,9 @@ Protocol Questions</h2>
 Blinding Notes</h3>
 <p><a href="https://stackoverflow.com/questions/47860570/how-to-create-and-verify-blind-rsa-signatures-with-crypto">https://stackoverflow.com/questions/47860570/how-to-create-and-verify-blind-rsa-signatures-with-crypto</a></p>
 <p><a href="https://crypto.stackexchange.com/questions/12707/usability-of-padding-scheme-in-blinded-rsa-signature">https://crypto.stackexchange.com/questions/12707/usability-of-padding-scheme-in-blinded-rsa-signature</a></p>
-<p><a href="https://crypto.stackexchange.com/questions/54085/is-there-a-standard-padding-format-for-rsa-blind-signatures/60728#60728">https://crypto.stackexchange.com/questions/54085/is-there-a-standard-padding-format-for-rsa-blind-signatures/60728#60728</a> <a href="https://crypto.stackexchange.com/questions/5626/rsa-blind-signatures-in-practice">https://crypto.stackexchange.com/questions/5626/rsa-blind-signatures-in-practice</a> </p>
+<p><a href="https://crypto.stackexchange.com/questions/54085/is-there-a-standard-padding-format-for-rsa-blind-signatures/60728#60728">https://crypto.stackexchange.com/questions/54085/is-there-a-standard-padding-format-for-rsa-blind-signatures/60728#60728</a> <a href="https://crypto.stackexchange.com/questions/5626/rsa-blind-signatures-in-practice">https://crypto.stackexchange.com/questions/5626/rsa-blind-signatures-in-practice</a></p>
+<p><a href="https://cfrg.github.io/draft-irtf-cfrg-blind-signatures/draft-irtf-cfrg-rsa-blind-signatures.html">https://cfrg.github.io/draft-irtf-cfrg-blind-signatures/draft-irtf-cfrg-rsa-blind-signatures.html</a></p>
+<p>alternative implementation using openssl <a href="https://github.com/jedisct1/blind-rsa-signatures">https://github.com/jedisct1/blind-rsa-signatures</a> </p>
 </div></div><!-- PageDoc -->
 </div><!-- contents -->
 <!-- start footer part -->