Create towards-privacy-by-default.md

towards-privacy-by-default.md

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+# Towards Privacy by Default
+
+2018.06.26 13:00-14:00 - Nathan Wilcox and Ian Miers
+
+### Maintaining T vs Z addresses in the protocol
+
+Beneficial to ZCash to be based off of BTC source code
+
+Questions around protocol changes:
+
+- Making shielding transaction mandatory in the next upgrade? 
+- How do we transition into an entirely shielded addresses protocol? 
+- How do we get rid of transparent addresses holding funds?
+
+### Making shielded transactions mandatory
+
+Removing T-addresses
+
+**Pros** 
+
+1 address type
+UX/Privacy mental model
+Remove technical debt 
+Fungbility of coins 
+
+**Cons**
+
+Proclude use cases
+Proclude better performance
+Bitcoin infrastructure compatibility
+If Z-addresses banned, no T-addresses to fall back to
+
+### Questions
+
+1. How to choose when/if to transition?
+2. Is Sapling performance/UX acceptable?
+3. How to incentivize 3rd party adoption?
+4. What about audits for exchanges/institutions?
+5. What about block rewards ? 
+6. Is this for Sapling or later?
+7. When would it be too late?
+
+Audience: 
+Chain of provenance: Working with institutions, View keys selective disclosure isn't enough for institutional adoption.
+
+Audience: 
+Build a simple and clean user interface that would allow people to use Z addresses in a simpler way helping drive the adoption of Z addresses as the main address type of Zcash hence improving privacy on the blockchain. 
+
+Some exchanges are already working on supporting Sapling.