) Это стандартный функционал novacoin-qt, использование длинных адресов ничем не отличается от коротких 
getmininginfo
{
...
"proof-of-stake" : 5.02991061,
...
"stakeinterest" : 180000,
}
$ novacoind createrawtransaction '[{"txid":"131f27f17650a5dbb8cf80419ab60a363e3b8c6a0060d8adadab9ab54b81fdee","vout":1},{"txid":"fc005d97faef46c11dd354f635bc51899edf88f5d27c65b834c1609ed7eaf746","vout":0}]' '{"mwechseLxPj9R3osK6Dxhu6hPx1tK6ZDeL":15.599600}'
01000000fbf4da5702eefd814bb59aabadadd860006a8c3b3e360ab69a4180cfb8dba55076f1271f130100000000ffffffff46f7ead79e60c134b8657cd2f588df9e8951bc35f654d31dc146effa975d00fc0000000000ffffffff01f007ee00000000001976a914b0f4fce71c9565803378f124d5152c42fb313ace88ac00000000
$ novacoind signrawtransaction 01000000fbf4da5702eefd814bb59aabadadd860006a8c3b3e360ab69a4180cfb8dba55076f1271f130100000000ffffffff46f7ead79e60c134b8657cd2f588df9e8951bc35f654d31dc146effa975d00fc0000000000ffffffff01f007ee00000000001976a914b0f4fce71c9565803378f124d5152c42fb313ace88ac00000000
{
"hex" : "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",
"complete" : true
}
$ novacoind sendrawtransaction 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
b5391bc20ed231da3529796da4b6c2f311555d23af3f185cacc9632cdb2e2565
$ novacoind help |grep malleable
adjustmalleablekey
adjustmalleablepubkey
dumpmalleablekey
importmalleablekey
listmalleableviews
newmalleablekey
$ novacoind newmalleablekey
{
"PublicPair" : "VGBA......koaN",
"PublicBytes" : "2103......a65d",
"Address" : "QAE17g15ht9tFyEKkniHvajDXmmdv93mWSHbjbsj7ce2g4p9KoUYKGkzEAvprcqKerxpnR9Ti8MTLUhV8812FkB8pLybnGAQ5Mt",
"KeyView" : "7LJ8......fkmS"
}
) 