using deterministic onetime keys to support proof-of-transfer, Fix #512
using deterministic onetime keys to support proof-of-transfer, Fix #512

drltc/keyid,camponez/bitshares,Ziftr/bitshares,dacsunlimited/dac_play,bitshares/bitshares,jakeporter/Bitshares,dacsunlimited/dac_play,camponez/bitshares,camponez/bitshares,RemitaBit/Remitabit,frrp/bitshares,bitshares/bitshares,bitsuperlab/cpp-play,camponez/bitshares,denkhaus/bitsharesx,bitshares/bitshares-0.x,bitshares/bitshares-0.x,bitshares/bitshares-0.x,jakeporter/Bitshares,frrp/bitshares,RemitaBit/Remitabit,bitshares/devshares,Ziftr/bitshares,drltc/keyid,drltc/keyid,bitshares/devshares,RemitaBit/Remitabit,jakeporter/Bitshares,bitshares/devshares,jakeporter/Bitshares,bitshares/bitshares,bitshares/devshares,bitsuperlab/cpp-play,bitshares/bitshares,bitshares/bitshares,bitshares/devshares,Ziftr/bitshares,jakeporter/Bitshares,drltc/keyid,frrp/bitshares,dacsunlimited/dac_play,frrp/bitshares,dacsunlimited/dac_play,FollowMyVote/bitshares,bitshares/bitshares,FollowMyVote/bitshares,camponez/bitshares,denkhaus/bitsharesx,FollowMyVote/bitshares,denkhaus/bitsharesx,RemitaBit/Remitabit,bitshares/bitshares-0.x,Ziftr/bitshares,bitsuperlab/cpp-play,bitshares/devshares,jakeporter/Bitshares,frrp/bitshares,frrp/bitshares,bitsuperlab/cpp-play,FollowMyVote/bitshares,bitshares/bitshares-0.x,denkhaus/bitsharesx,FollowMyVote/bitshares,bitshares/bitshares-0.x,RemitaBit/Remitabit,bitsuperlab/cpp-play,dacsunlimited/dac_play,bitsuperlab/cpp-play,camponez/bitshares,RemitaBit/Remitabit,FollowMyVote/bitshares,dacsunlimited/dac_play