Summary of PCHAIN Tech AMA on 27/08/2019
We have finished the Tech AMA with PCHAIN founder Dr. Feng Cao, the core dev team members Steven Lv and James on the telegram on August27th. Thank you for your participation and support. The following is the summary of the Tech AMA.
1.Is it possible to optimize (reduce) old blocks which currently is 500gb by using Smart Data?
Jeff: Yes. It’s included in V 1.1.0 of today‘s release. We will see the effectiveness.
2. When will pchain network use 100gb per month as it was promised instead of 20gb daily as it is now?
Steven: With the version 1.1, PChain releases data reduction function, which will make the total disk usage a low level. we could see the detail figure later.
3. It is not profitable to keep own node soon, we are worry that people going to delegate to others nodes instead. Are you going to do something with this?
Steven: decentralization does not increase if this happens.These could also be solved with data reduction, nodes can run with low disk usage.
4.For what are you planning to use htlc (Hash Time Locked Contract) ?
Steven: htlc will be used to decentralized token swap between ERC20 PI and Native PI. the development has been done will release later. other cross-chain like for bch is also in the progress.
5.”We will build different child chain for different industry, such as insurance, ABS, Banking, Industry Cloud” 9 months have passed, is there any information that you can share?
Jeff: We will announce another ccc in Sep.
6. At what time were PChain aware of the issue ?
Jeff: pchain mainnet was stopped in 16 hours due to serious network disconnect of AWS nodes which makes pchain p2p module cannt collect enough peer nodes to boardcast msg. In fact，it‘s common in early stage of blockchain. You may know that bch was down for 72 hours in 2017.
7.Does PChain have any sort of formal Problem Mgmt process in place ?
Jeff: yes. we developed email notice reminder 7*24 hours. Whenever and whatever abnormal of pchain network all the relevant members will get email. And our op team will try to resolve the problem. If normal process cannt resolve the problem，dev team will get involved.
8.when will the erc20-pi and bnb-pi crosschain available? Do you have some issues with this?
Steven: No, we have no issues with code-writing; the issue is time is not enough. we will deliver them one by one.
9. I am working on an article about Pchains consensus mechanism and have a few questions. What is the transaction level sharding process flow BLS signatures? From what I understand, the execution groups verify and sign groups of transactions then send them up to the governance group who then take all the aggregated signatures for each txset and consider them all not needing further verification so the governance group then aggregates all execution group signatures as the signature on the block? Would that mean then that a block is effectively signed by all validator nodes on block finalization? Does the block go through signing via the governance group? Sorry for the block of text, I just want to be clear before putting it into writing.
Steven: We haven’t implement this transaction-level sharding yet. chain-level seems work well for the current phase. we would consider tx-level sharding later.
10. Second question is in parallelization. Do main chain blocks ever reference the child chain block hashes and vice versa, thereby combining the security and decentralization of the whole network? Or do they operate completely independent of one another?
Steven: Yes, main chain and child chain have references. mainly every node running child chain need to be a full node of main, so this node have main chain data. And main chain will save some information from child chain, like epoch info and withdraw operation.
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