这里不包括“sell only required collateral” 新特性吗？大爆仓单还是全部挂出卖，只是部分成交后会实时调整抵押率和爆仓价？

according to the current margin call rule, when the collateral rate of the debt position fall under 1.75, all the collateral are put into an order to sell at the price of settlement price * 0.9.

a big problem generalized by this rule is, when there is a huge debt position be margin called, a huge sell order will be there, this enhance the trend of the price go down, and speed up the coming of more margin call, this positive-feedback always lead to a disaster.

speculators realize that there a big chance to make money by shorting BTS and buy back BTS from the margin call order, they keep there eye on this and find chance to manually create margin call, the result is, users who generate smartcoin to cultivate the ecosystem are always in danger and be hurt now and then, and the price of BTS are in a big limit to go up.

actually it is not a must to sell all the collaterized BTS when the debt position is margin called, it's possible to split the debt position into 2 parts, give one part(let's call it reserve part) a higher collateral ratio(let's call it reserve collateral ratio) and put the other part(enhance part) into sell with a lower collateral ratio(let's call it enhance collateral ratio), this can reduce the quantity of sell orders and slow down the price to go down.

here we need to introduce 2 global parameters:

reserve collateral ratio (RCR) and enhance collateral ratio(ECR).

when a debt position are margin called, a process will be trigged to splict the position to 2 parts, the ratio for collateral that be put into reserve collateral part are:

r = RCR*(MCR-ECR)/MCR(RCR-ECR)

suppose MCR = 1.75, RCR = 1.8, ECR = 1.5, then r = 85.7%
suppose MCR = 1.75, RCR = 1.85, ECR = 1.5, then r = 75.5%

I believe this will help BTS a lot.

I wonder whether this is possible from development perspective and I hope this topic can be discussed more.

each time BTS are in serious market situation, poloniex is maintaining BTS wallet and users cannot withdraw BTS, I cannot understand this without supposing poloniex is in collusion with some whales to manipulate the BTS price and make money.

this always put Bitshares into dangerous place.

if you love BTS, please leave poloniex, witnesses, please remove poloniex price from price feeding.

now the system just restored from a disaster, can we wait some days to see how things will be like when the price goes a little up? and then decide?

5% is necessary because the price feeding does not trace the market value exactly enough, I don't think the problem is already solved.

please take good care of your price feeding.

I am keen to contribute to the preDEVCON events. Please be in contact with details on the venue and schedule so that may book my accommodations promptly. Thank you for organizing.

date: 20th Jan 2018
place: naked Hub, No.35, Loushanguan Road, Shanghai

place may change, I'll update here ASAP if any change happen.

Quote

get DEX price A

What is "DEX price A"? Which pair exactly?

it refers to the price in bitCNY/BTS pair in DEX.