Proof of burn

Author rewards:
0.015 SBD and 0.005 STEEM POWER for burnpost/re-burnpost-steem-experiment-burn-post-97-20180429t203950500z
268.517 SBD and 68.750 STEEM POWER for burnpost/re-burnpost-steem-experiment-burn-post-104-20180429t170114800z
357.922 SBD and 91.641 STEEM POWER for burnpost/steem-experiment-burn-post-104

Sold 639.449 SBD for 537.991 STEEM on internal market (+12.995 donation)

https://steemd.com/tx/80c13fa7d49bd1c1e156b3f241068bf17aff301b

Power up of 541.299 STEEM since SBD > $1 (+3.308 donation)

https://steemd.com/tx/db273cf73eed3507b028a39c3f41ff43a03d66a5