Multi-sig solution

[jimmychu0807]

@tehsunnliu @ytqaljn

Without using any external solutions, the following demonstrate the default multi-sig UX in Polkadot. Is that enough for our use case?

• Polkadot Multi-sig support
• Video walkthru on Polkadot multi-sig

We need to integrate pallet_multisig and pallet_proxy in CESS runtime, as shown in the Substrate codebase to use multi-sig feature.

Is this enough for our use case?

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If not, I also found two nice solutions on creating multi-sig account in Substrate chain:

1. Multix

   • Renowned team behind, Chainsafe
   • Their treasury proposal voting (proposal text).
   • An early blogpost with a demo video
   • A later blogpost demoing using WalletConnect
   • Src repo

2. PolkaSafe

   • Engagement in Polkadot Forum
   • Src repo

To use the above two solutions, there is probably some integration work need to be done.

[ytqaljn]

It seems that option 1 is enough to achieve our purpose.

[ytqaljn]

@jimmychu0807
I've added them: #262