Proof of burn
Author reward 314.966 SBD, and 64.636 STEEM POWER for smooth/steem-experiment-burn-post-2
Sold 314.966 SBD for 482.688 STEEM on internal market
https://steemd.com/tx/9544f67b6c2070d8c862e8f62b7c24366118a615
Total burn of 64.636+482.688 = 547.324 STEEM
https://steemd.com/tx/192da72e0d2a36fdd583d67f2ebfb5974fc90124