DIP: Multi-agent Transactions

[emmazzz]

Currently in the Diem Framework, a transaction acts on behalf of a single on-chain account. However, there is no mechanism for multiple on-chain accounts to agree on a single atomic transaction. This DIP presents a new scheme of transactions--multi-agent transactions--which act on behalf of multiple on-chain accounts. Multi-agent transactions leverage Move’s signer type to allow essentially any arbitrary atomic actions in one transaction involving multiple on-chain accounts.

DIP PR here: #159

[aching]

I'll be happy to be the DIP manager for this.

[dahliamalkhi]

@aching this might be ready to merge in Draft stage?

[aching]

Definitely, just was waiting for the PR to stabilize.

[aching]

There was great discussion in the draft stage and seems that there are no objections in the last 20 days. Proposing to move this to "Last Call".

[aching]

#181

[aching]

Tentatively setting a target date to move to Approve or Reject in 2 weeks - June 18th as there has been significant time to provide feedback during the draft and last call combined (already over 2 months). If there are concerns, please raise them.