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From: Crypto Fish <cryptofish82@gmail.com>
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Subject: [Bitcoin-development] Multi Input/Output Transaction Problems
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So, I'm having some problems getting a multi input/multi output transaction
working. My code below works with 1 input and 2 output, but when adding
more inputs/outputs the transaction gets rejected. I'm sure whatever I'm
doing wrong in pretty simple, any ideas?
Code works for this (1 input, 2 outputs):
CTransaction(hash=01a3204517476812df2c2f77735a72a6d3e7eb8b9a5d5330ca433dd875fc4c3c,
ver=1, vin.size=2, vout.size=4, nLockTime=0)
CTxIn(COutPoint(6ee4049d6c75d6450e961446d28760207bd7036e2aa692afb80bb34245d3df84,
0), scriptSig=304502204cdfd276ff9c53bb)
CTxOut(nValue=4.00000000, scriptPubKey=OP_DUP OP_HASH160 b07e181ce438)
CTxOut(nValue=1.00000000, scriptPubKey=OP_DUP OP_HASH160 bf7484e469c8)
Code doesn't work for this (2 input, 4 outputs):
CTransaction(hash=01a3204517476812df2c2f77735a72a6d3e7eb8b9a5d5330ca433dd875fc4c3c,
ver=1, vin.size=2, vout.size=4, nLockTime=0)
CTxIn(COutPoint(6ee4049d6c75d6450e961446d28760207bd7036e2aa692afb80bb34245d3df84,
1), scriptSig=304502204aef3f393c273835)
CTxIn(COutPoint(6ee4049d6c75d6450e961446d28760207bd7036e2aa692afb80bb34245d3df84,
0), scriptSig=304502204cdfd276ff9c53bb)
CTxOut(nValue=4.00000000, scriptPubKey=OP_DUP OP_HASH160 bf7484e469c8)
CTxOut(nValue=491.00000000, scriptPubKey=OP_DUP OP_HASH160 0796b7f3430f)
CTxOut(nValue=4.00000000, scriptPubKey=OP_DUP OP_HASH160 b07e181ce438)
CTxOut(nValue=1.00000000, scriptPubKey=OP_DUP OP_HASH160 bf7484e469c8)
Pseudo code showing working transaction:
// These are how the vout's are made
CScript scriptPubKey;
scriptPubKey.SetDestination(address);
CScript s;
s << OP_DUP << OP_HASH160 << scriptPubKey.GetID() << OP_EQUALVERIFY <<
OP_CHECKSIG;
CTxOut out(nValue, s);
---------------
CTransaction txNew;
txNew.vin.clear();
txNew.vout.clear();
// vin and vout are already populated
for(unsigned int i = 0; i < vout.size(); i++){
txNew.vout.push_back(vout[i]);
}
//add all vins
for(unsigned int i = 0; i < vin.size(); i++){
txNew.vin.push_back(vin[i]);
}
//add all vins
for(unsigned int i = 0; i < vin.size(); i++){
// this is signed with 2 separate keys for each vin
if(!SignSignature(*keystore, prevPubKey, txNew, i,
int(SIGHASH_ALL|SIGHASH_ANYONECANPAY)))
printf('signing failed!\n');
// I was told I might need to serialize the inputs? Not sure how
that would work
}
RelayTransaction(txNew, txNew.Hash());
---
CryptoFish
--f46d044304b05efabe04f1d462f1
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div style=3D"font-family:arial,sans-serif;font-size:13px"=
>So, I'm having some problems getting a multi input/multi output transa=
ction working. My code below works with 1 input and 2 output, but when addi=
ng more inputs/outputs the transaction gets rejected. I'm sure whatever=
I'm doing wrong in pretty simple, any ideas?</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px"><br></div><div s=
tyle=3D"font-family:arial,sans-serif;font-size:13px">Code works for this (1=
input, 2 outputs):</div><div style=3D"font-family:arial,sans-serif;font-si=
ze:13px">
<br></div><div style=3D"font-family:arial,sans-serif;font-size:13px">CTrans=
action(hash=3D01a3204517476812df2c2f77735a72a6d3e7eb8b9a5d5330ca433dd875fc4=
c3c, ver=3D1, vin.size=3D2, vout.size=3D4, nLockTime=3D0)</div><div style=
=3D"font-family:arial,sans-serif;font-size:13px">
=A0 =A0 CTxIn(COutPoint(6ee4049d6c75d6450e961446d28760207bd7036e2aa692afb80=
bb34245d3df84, 0), scriptSig=3D304502204cdfd276ff9c53bb)</div><div style=3D=
"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTxOut(nValue=3D4.000=
00000, scriptPubKey=3DOP_DUP OP_HASH160 b07e181ce438)</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTxOut(n=
Value=3D1.00000000, scriptPubKey=3DOP_DUP OP_HASH160 bf7484e469c8)</div><di=
v style=3D"font-family:arial,sans-serif;font-size:13px"><br></div><div styl=
e=3D"font-family:arial,sans-serif;font-size:13px">
Code doesn't work for this (2 input, 4 outputs):</div><div style=3D"fon=
t-family:arial,sans-serif;font-size:13px"><br></div><div style=3D"font-fami=
ly:arial,sans-serif;font-size:13px">CTransaction(hash=3D01a3204517476812df2=
c2f77735a72a6d3e7eb8b9a5d5330ca433dd875fc4c3c, ver=3D1, vin.size=3D2, vout.=
size=3D4, nLockTime=3D0)</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTxIn(CO=
utPoint(6ee4049d6c75d6450e961446d28760207bd7036e2aa692afb80bb34245d3df84, 1=
), scriptSig=3D304502204aef3f393c273835)</div><div style=3D"font-family:ari=
al,sans-serif;font-size:13px">
=A0 =A0 CTxIn(COutPoint(6ee4049d6c75d6450e961446d28760207bd7036e2aa692afb80=
bb34245d3df84, 0), scriptSig=3D304502204cdfd276ff9c53bb)</div><div style=3D=
"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTxOut(nValue=3D4.000=
00000, scriptPubKey=3DOP_DUP OP_HASH160 bf7484e469c8)</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTxOut(n=
Value=3D491.00000000, scriptPubKey=3DOP_DUP OP_HASH160 0796b7f3430f)</div><=
div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTxOut(nV=
alue=3D4.00000000, scriptPubKey=3DOP_DUP OP_HASH160 b07e181ce438)</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTxOut(n=
Value=3D1.00000000, scriptPubKey=3DOP_DUP OP_HASH160 bf7484e469c8)</div><di=
v style=3D"font-family:arial,sans-serif;font-size:13px"><br></div><div styl=
e=3D"font-family:arial,sans-serif;font-size:13px">
Pseudo code showing working transaction:</div><div style=3D"font-family:ari=
al,sans-serif;font-size:13px"><br></div><div style=3D"font-family:arial,san=
s-serif;font-size:13px">=A0 =A0 // These are how the vout's are made</d=
iv><div style=3D"font-family:arial,sans-serif;font-size:13px">
=A0 =A0 CScript scriptPubKey;</div><div style=3D"font-family:arial,sans-ser=
if;font-size:13px">=A0 =A0 scriptPubKey.SetDestination(address); =A0 =A0</d=
iv><div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CScri=
pt s;</div><div style=3D"font-family:arial,sans-serif;font-size:13px">
=A0 =A0 s << OP_DUP << OP_HASH160 << scriptPubKey.GetID()=
<< OP_EQUALVERIFY << OP_CHECKSIG;</div><div style=3D"font-fami=
ly:arial,sans-serif;font-size:13px">=A0</div><div style=3D"font-family:aria=
l,sans-serif;font-size:13px">
=A0 =A0 CTxOut out(nValue, s);</div><div style=3D"font-family:arial,sans-se=
rif;font-size:13px">=A0</div><div style=3D"font-family:arial,sans-serif;fon=
t-size:13px">=A0 =A0 ---------------</div><div style=3D"font-family:arial,s=
ans-serif;font-size:13px">
<br></div><div style=3D"font-family:arial,sans-serif;font-size:13px"><br></=
div><div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 CTra=
nsaction txNew;</div><div style=3D"font-family:arial,sans-serif;font-size:1=
3px">=A0 =A0 txNew.vin.clear();</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 txNew.vo=
ut.clear();</div><div style=3D"font-family:arial,sans-serif;font-size:13px"=
><br></div><div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =
=A0 // vin and vout are already populated=A0</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 for(unsi=
gned int i =3D 0; i < vout.size(); i++){</div><div style=3D"font-family:=
arial,sans-serif;font-size:13px">=A0 =A0 =A0 =A0 txNew.vout.push_back(vout[=
i]);</div><div style=3D"font-family:arial,sans-serif;font-size:13px">
=A0 =A0 }</div><div style=3D"font-family:arial,sans-serif;font-size:13px">=
=A0 =A0=A0</div><div style=3D"font-family:arial,sans-serif;font-size:13px">=
=A0 =A0 //add all vins</div><div style=3D"font-family:arial,sans-serif;font=
-size:13px">=A0 =A0 for(unsigned int i =3D 0; i < vin.size(); i++){</div=
>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 =A0 =A0 =
txNew.vin.push_back(vin[i]);</div><div style=3D"font-family:arial,sans-seri=
f;font-size:13px">=A0 =A0 }</div><div style=3D"font-family:arial,sans-serif=
;font-size:13px">
<br></div><div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =
=A0 //add all vins</div><div style=3D"font-family:arial,sans-serif;font-siz=
e:13px">=A0 =A0 for(unsigned int i =3D 0; i < vin.size(); i++){</div><di=
v style=3D"font-family:arial,sans-serif;font-size:13px">
=A0 =A0 =A0 =A0 // this is signed with 2 separate keys for each vin</div><d=
iv style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 =A0 =A0 if=
(!SignSignature(*keystore, prevPubKey, txNew, i, int(SIGHASH_ALL|SIGHASH_AN=
YONECANPAY)))=A0</div>
<div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 =A0 =A0 =
=A0 =A0 printf('signing failed!\n');</div><div style=3D"font-family=
:arial,sans-serif;font-size:13px"><br></div><div style=3D"font-family:arial=
,sans-serif;font-size:13px">
=A0 =A0 =A0 =A0 // I was told I might need to serialize the inputs? Not sur=
e how that would work</div><div style=3D"font-family:arial,sans-serif;font-=
size:13px">=A0 =A0 }</div><div style=3D"font-family:arial,sans-serif;font-s=
ize:13px"><br>
</div><div style=3D"font-family:arial,sans-serif;font-size:13px">=A0 =A0 Re=
layTransaction(txNew, txNew.Hash());</div><div style=3D"font-family:arial,s=
ans-serif;font-size:13px"><br></div><div style=3D"font-family:arial,sans-se=
rif;font-size:13px">
<br></div><div style=3D"font-family:arial,sans-serif;font-size:13px">---</d=
iv><div style=3D"font-family:arial,sans-serif;font-size:13px"><br></div><di=
v style=3D"font-family:arial,sans-serif;font-size:13px">CryptoFish</div></d=
iv>
--f46d044304b05efabe04f1d462f1--