if a single witness fed in a very wrong price couldn't that trigger margin calls / forced settlement?
sure, at the right time at the right place...they can.
3-4 of them colluding can make a party out of it... and one will never be able to prove it...
as a matter of fact I believe they already do that... and nobody cares. [I will look for the link where I posted it, if interested*]
*Generally there was a settlement order 1. they lowered the settlement price 2. Placed a new position with the least collateral ratio(3 sec after the new price got into effect). 3. the order in (2) got filled 4. They published a new higher price feed 5.The next order with the lowest collateral got called 5.they sold into it at 10% above their new feed price...
if a single witness fed in a very wrong price couldn't that trigger margin calls / forced settlement?
No. bts takes the median of all witnesses' feeds.
what is you point? The newly published price for sure can change the median price.... obviously.