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--- a/protocol/protocol.tex
+++ b/protocol/protocol.tex
@@ -1272,6 +1272,9 @@ within the circuit was not considered to justify the benefits.
 
 \todo{}
 
+%The need for \Leading{253}{\CRH(.)} to be collision-resistant was not
+%explicitly stated in \ (This does not follow from collision resistance of $\CRH$.)
+
 \subsection{In-band secret distribution}
 
 \todo{}
@@ -1289,6 +1292,24 @@ fields.
 \end{itemize}
 
 
+\section{Acknowledgements}
+
+The inventors of \Zerocash are Eli Ben-Sasson, Alessandro Chiesa,
+Christina Garman, Matthew Green, Ian Miers, Eran Tromer, and Madars
+Virza.
+
+The authors would like to thank everyone with whom they have discussed
+the \Zerocash protocol design; in addition to the inventors, this includes
+Mike Perry, Isis Lovecruft, Leif Ryge, Andrew Miller, Zooko Wilcox,
+Nathan Wilcox, Samantha Hulsey, and no doubt others.
+
+Mike Perry, Zooko Wilcox, and Nathan Wilcox contributed to the design
+of selective transparency features, now called viewing keys.
+
+The Faerie Gold attack was found by Zooko Wilcox.
+The internal hash collision attack was found by Taylor Hornby.
+
+
 \section{References}
 
 \begingroup