This batched proposal is to Accept/Open an HRMP channel with Shiden and to register the SDN token
We propose to open a bi-directional channel between Moonriver and Shiden . Initially, the main use case will be to transfer MOVR and SDN between the two chains, but it can be further expanded to other use cases. The proposal also includes the SDN asset registration as xcSDN, with the following details:
xcSDN will have the following asset ID and XC-20 address:
Proposal #24 with the following hash: 0x1574f7ff82961dce53de55ae1c545ab3655105c40b16dba92fe03057028034e0
The procedure for opening the channels is as follows:
Once the HRMP channels are ready, XCM based cross-chain transfer will be possible. The extrinsics that need to be executed on the relay chain, are:
The *proposedMaxCapacity *and *proposedMaxMessageSize *are set to the values of Kusama’s configuration.activeConfig.hrmpChannelMaxCapacity and configuration.activeConfig.hrmpChannelMaxMessageSize values, respectively.
These extrinsics need to be called from the parachain’s sovereign account as origin, via a democracy proposal. The proposal will use polkadotXcm pallet to send XCM message to the Relay Chain with the following items:
The asset will be registered with the metadata described in the summary. The setAssetUnitsPerSecond was calculated using the value for SDN value on July 8th 2022, targeting a XCM transaction cost of 0.02$.
If you are interested, the hex-encoded call data for this proposal in Moonriver is:
0x1e020c670001010002100004000000000700e876481713000000000700e8764817010700f2052a01060002286bee183c01d70700000d0100040001010070617261e7070000000000000000000000000000000000000000000000000000670001010002100004000000000700e876481713000000000700e8764817010700f2052a01060002286bee383c00d7070000e8030000009001000d0100040001010070617261e70700000000000000000000000000000000000000000000000000001e020c6900000101005d1f1853686964656e14786353444e120001000000000000000000000000000000016901000101005d1f9f732c79e022c54e04000000000000001700000000050411011da53b775b270400e7e61ed5cbc5a146ea70f53d5a3306ce02aaf97049cf181a43978d284fa908a0e6d41980ebc91eefffffffff0ca324c842330521525e7de111f38972181460006000fd
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.