TL;DR

We propose to open HRMP communication between Shiden Network and Bifrost Kusama. This will require actions on both chains.

Summary

We propose to open a bi-directional channel between Shiden Network and Bifrost Kusama. The primary use cases will be:

1. To prepare for opening HRMP channel between Astar Network and Bifrost on Polkadot so that the $vDOT, liquid staking DOT tokens, can be transferred to Astar to be used in the ecosystem of Astar Network and the protocols built on top of the network.
2. $vKSM, liquid staking KSM tokens, can be transferred to Shiden to be used in the ecosystem of Shiden Network and the protocols built on top of the network.
3. $KSM tokens on Shiden can be transferred to Bifrost Kusama and used in Kusama validator staking while receiving the liquid tokens
4. Build liquid staking solution for Shiden dApp Staking

Proposal

There is no on-chain proposal. The proposal created in this forum acts as an official proposal between Bifrost Kusama and Shiden Network.

Technical details (WIP)

The procedure for opening the channels is as follows:

1. Bifrost Kusama initializes a proposal to open Bifrost Kusama to the Shiden Network HRMP channel via the Astar forum.
2. Wait until the proposal on step 1 gets approved & enacted.
3. Onboard your testnet on the Rococo relay chain and exchange public endpoints and parachain-ids.
4. Wait until onboarding was successful on testnet.
5. Shiden Network proposes to accept the Bifrost Kusama to Shiden Network HRMP channel and open a Shiden Network to Bifrost Kusama HRMP channel via [Astar MuliSig Governance Batch call].
6. Wait until the proposal on step 5 gets approved & enacted.
7. Bifrost Kusama accepts the Shiden Network to Bifrost Kusama HRMP channel.
8. Wait for another session on Kusama/or/Polkadot for the change to be effective.

These extrinsics need to be called with the parachain’s sovereign account as the origin. To achieve this, on the Bifrost Kusama side we will use polkadot-xcm pallet to send XCM message to the relay chain, by executing the following extrinsic from the parachain. Shiden Network should make an open request call and an accept request call with its pallet.

As a prerequisite, the parachain’s sovereign account must contain at least 10 KSM to be locked as collateral (5 for each channel direction), plus some KSM to pay for XCM execution fees.

Discussion

https://forum.astar.network/t/open-hrmp-channel-between-shiden-network-and-bifrost-kusama/4030