Op-codes for CA operations, outline.

bsip-1201.md

@@ -25,7 +25,30 @@ By allowing commitments of differing assets to be mixed together, we achieve two
 
 ## Rationale
 ## Specifications
+
+We propose to add the following three CA operations to the set of valid operations declared in graphene::chain::operation (chain/protocol/operations.hpp). The new CA operations are shown here side by side with their CT equivalents:
+
+Op-Code | Description                   | Op-Code          | Description
+:------:|-------------------------------|------------------|----------------------------------
+39      | transfer_to_blind_operation   | 49 (placeholder) | transfer_to_ca_blind_operation
+40      | blind_transfer_operation      | 50 (placeholder) | ca_blind_transfer_operation
+41      | transfer_from_blind_operation | 51 (placeholder) | transfer_from_ca_blind_operation
+
+
+### Proposed operation: transfer_to_ca_blind_operation (Public to Blind)
+
+### Proposed operation: ca_blind_transfer_operation (Blinded to Blind)
+
+### Proposed operation: transfer_from_ca_blind_operation (Blind to Public)
+
 ## Discussion
+
+### Compatibility with ring-signature scheme
+
+The Op-Code additions and specifications provided in this document do not conflict with or depend on the details of the ring-signature proposals in [BSIP-1202](bsip-1202.md), as they effect different substructures of the Transaction structure, and therefore both proposals can be implemented independently. This document specifies structures within the Operations vector within a Transaction structure, whereas the ring signature scheme would change the Signatures vector.
+
+(TODO: Check whether preceding is true, i.e. that the operation structure is independent of signature method.  If it is not true, include here a discussion of what else might need to be included in the structure, so that a decision can be made as to whether the two features would be best developed in parallel, or whether ring-sigs could be implemented subsequently as an "upgrade" to CA.)
+
 ## Summary for Shareholders
 ## Copyright