Add vestedTransfer for Assets on Asset Hub

[adamsteeber]

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• This is not a support question.

Motivation

As Asset Hub becomes more integral in the Polkadot XCM paradigm, it's important that it integrates useful defi tools. Having the right tools available will ensure that projects wanting to launch Asset Hub tokens have access to on-chain functions that facilitate tokenomics. Adding simple, out-of-the-box tools to all assets created on Asset Hub will give founders and users more flexibility in their innovations without needing to rely on trust-based, centralized solutions.

Request

While many features could be added to assets, I request that we begin with the simplest and most useful: vested transfers. Vesting is present in nearly all tokenomic models and it's quite precarious to facilitate using off-chain tools. Much like vesting.vestedTransfer on the relay chain, assets on Asset Hub could be autonomously vested on a per block basis. This simple feature will make facilitating tokenomics much easier for founders.

Solution

The core logic/framework is already fleshed out in the vesting pallet, however there could be some challenges adapting it to assets on Asset Hub. Since Asset Hub assets are customizable and don't necessarily have intrinsic value, the parameters for vested transfers may need to be dependent on an asset's existential deposit and require a DOT deposit for the on-chain storage required to facilitated vested transfers.

I could help with implementing this solution but my contractors are not briefed on Polkadot SDK pallets and I might need to contract new devs to get this done. It would probably be most cost effective if a couple of members in the fellowship work together to roll this out.

Are you willing to help with this request?

Maybe (please elaborate above)

[acatangiu]

I think what you are asking for is polkadot-fellows/runtimes#269 (already under way) 👍

[adamsteeber]

I think what you are asking for is polkadot-fellows/runtimes#269 (already under way) 👍

That PR only handles vested transfers of DOT/KSM, not of all other assets.

[joepetrowski]

Once we have:

• Implement pallet-assets-freezer #3951
• Migrate Vesting pallet to fungibles

Then this should be simply adding new instances of the Vesting pallet for assets.

[pandres95]

@joepetrowski I already started working on the migration for vesting pallet to fungibles. Let you know once I have all the details and the opened issue/PR.