Sort:  

I think it is burnt when demand falls to a point where the price falls below US$1 because at that time you can exchange 1SBD for US$1 worth of Steem.

Coin Marketplace

STEEM 0.21
TRX 0.26
JST 0.038
BTC 104657.33
ETH 3352.72
SBD 4.22