Having a specification for the circuit and related changes necessary to prove ownership of one or more Orchard notes means we can prove balance (by adding the values of several notes via cvs and revealing the sum similar to valueBalance). This is also useful as a component of any protocol that uses balance as a proxy (e.g. air drops or coinholder voting).
This was initially proposed as https://zips.z.cash/draft-str4d-orchard-balance-proof (#848) but there is now a more complete proposed draft in #1199.
Having a specification for the circuit and related changes necessary to prove ownership of one or more Orchard notes means we can prove balance (by adding the values of several notes via
cvs and revealing the sum similar tovalueBalance). This is also useful as a component of any protocol that uses balance as a proxy (e.g. air drops or coinholder voting).This was initially proposed as https://zips.z.cash/draft-str4d-orchard-balance-proof (#848) but there is now a more complete proposed draft in #1199.