This article was first published on Wanchain - Medium
Q1. How crosschained BTC to wanBTC is realized?
A: Please read this article for general idea:
Codes on Githhub Repo：https://github.com/wanchain/wanchain-crosschain-contracts/tree/btc_wan_cross
Q2. About Storeman Group
Threshold + MPC method to manage cross-chain assets, is it managed through multiple groups? How many groups are there, and how to manage different groups?
A: The previous design was that each cross-chain bridge (two chains or called one pair) use one storeman group with 21 nodes. The latest research update is that cross-chain bridges will share a combined Storeman group to enhance the utilization and security of collaterals. The number of nodes in this combined group can be expanded.
More details please refer to this article：
Q3. Does each group involve 21 nodes, and requires at least 16 signatures, and generates one address?
A: It is now a Storeman group of 21 nodes, which can be expanded. The required threshold signature is 15, and aone address is generated.
Q4. When one Storeman group is switching to a new group, do other groups need to re-generate key fragments?...
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Wanchain - Medium