Fundraising on-chain solves a lot of problems when compared to the existing centralized fund-raising model. But even though we obtain decentralization and control over the fundraising process, there is still privacy issues as the on-chain activity is visible to everyone. Example: During various crisis situations, due to geo-political laws, we might not be able to donate to a cause that is controversial for one particular government, as the government has full control over monitoring everyone's transactions. What if there was a way to fundraise for any particular cause, but not reveal the amount or the account address funding the cause ?