Ah I see. I switched to a public mainnet obelisk server and the error disappeared. I was wondering if there is any issue with the testnet support (I have to use testnet for the project I am doing). Is there any public obelisk server for testnet? Then I can test if it’s my obelisk server’s problem or not.

Best,
Chang


On Sunday, December 8, 2013 at 8:34 PM, Amir Taaki wrote:

> Firstly that error should disappear if you use the git version of sx.
> The Obelisk server format was changed recently and sx was not updated
> (now fixed in git).
>
> The public key in that transaction (which starts with 03, not 04) is a
> compressed public key. Both public keys are valid.
>
> Have you tried creating a transaction on Bitcoin mainnet?
>
> Were you successful with this tutorial on testnet?
> http://sx.dyne.org/offlinetx.html
> If not, then try mainnet.
>
> Then if you are successful with that tutorial, try constructing the same
> transaction as your code using only command line tools.
>
> If that works, then try your code (without signing). Is it the same
> transaction as when you used the command line tools?
>
> Try signing the transaction using command line tools. Note: the
> script_code which you sign for the inputs should be the address for the
> previous output of that input (which you are doing correctly in your
> code by getting the address of your key).
>
> If you get the command line signing working then it should be easy to
> identify the problem in your code. If you can't get the command line
> signing working, then try performing the entire steps for normal mainnet
> (not testnet) transactions.
>
> Use this to push non standard transactions to the blockchain instead of
> normal broadcast to get around the bitcoind relay rules:
>
> http://eligius.st/~wizkid057/newstats/pushtxn.php
>
> On 09/12/13 02:26, Chang Lan wrote:
> > Same result when I tried with smaller amount of testcoins.
> >
> > I noticed that the input script might wrong, but I couldn't use validtx,
> > since I always got "terminate called after throwing an instance of
> > 'libbitcoin::end_of_stream’”.
> >
> > For example, for this transaction:
> > 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
> >
> > showtx shows:
> > Input:
> > previous output:
> > 15d90534f8bc622bf50c60abb74957f85c99979ea51c155c403fcd9dc80ffd88:1
> > script: [
> > 30450220408bd8359dfe03a55f881f99b25a28cc691ccb4e29c825947e835c4a03f9bda20221008000ba23c20d19225a3e6f4f7351b0fbb9f7fc2bcb110605653d36ea8ac12a3401
> > ] [
> > 04b6d4cb502f6b016e310293dfe16336543f69d0b9afbf1f65f8eb7210753e925ef2e72af93ddf9ab626251a589246107a7524faa00dfc07bc41026c082b07714f
> > ]
> >
> > However, when I retrieve an arbitrary transaction from network:
> > $ sx fetch-transaction
> > 15d90534f8bc622bf50c60abb74957f85c99979ea51c155c403fcd9dc80ffd88 | sx showtx
> >
> > hash: 15d90534f8bc622bf50c60abb74957f85c99979ea51c155c403fcd9dc80ffd88
> > version: 1
> > locktime: 0
> > Input:
> > previous output:
> > 36d162f6292c62d9d60cd9ea152aaddb94de0301f5dbe0ff3f055a35bc4ee54e:0
> > script: [
> > 3046022100c6fd593068adaa263aa0b98af6b83fd29cf15df7cdeb7d31dc7b44c9c3b4307a022100a50990f3c60df0d3ee8d11d93d39ee07ec4623880ac7e191c9e680562bcfff6f01
> > ] [ 03cc32d912091b053d34aa12d0a272eb40a1ff9a0309ddcb32a98f39af74af6924 ]
> >
> > Why its public key (second part of the script) is shorter than mine?
> >
> > (My
> > code: https://github.com/changlan/tor-incentive/blob/master/main.cpp#L87)
> >
> > Best,
> > Chang
> >
> > On Sunday, December 8, 2013 at 5:17 PM, Amir Taaki wrote:
> >
> > > aha ok. I would just use the normal main net. I've got mine built for
> > > mainnet which is why it interprets your addresses as normal bitcoin
> > > addresses.
> > >
> > > I'll look into that message. have you tried your code with a tiny amount
> > > of BTC? don't forget to put a fee too.
> > >
> > > On 09/12/13 00:34, Chang Lan wrote:
> > > > The “address” in both input and the second output
> > > > is mnRQG7kRAapsriWL8hKHRWpw6AgSyWWmn4 in my machine. I have no idea why
> > > > we saw difference. I built the libbitcoin with ‘—enable-testnet’.
> > > >
> > > > I tried to make the transaction using ‘mktx’. Here is we I got:
> > > >
> > > > $ sx mktx txfile.tx --input
> > > > cb502ebca60cfe43bf0cd1c91a50ab07590eb8d35c3b2d29306693dfa36047d0:0
> > > > --output mnRQG7kRAapsriWL8hKHRWpw6AgSyWWmn4:309999990
> > > >
> > > > Added input
> > > > cb502ebca60cfe43bf0cd1c91a50ab07590eb8d35c3b2d29306693dfa36047d0:0
> > > > mktx: Unsupported address type.
> > > >
> > > > mnRQG7kRAapsriWL8hKHRWpw6AgSyWWmn4 is the address I have:
> > > > https://blockexplorer.com/testnet/address/mnRQG7kRAapsriWL8hKHRWpw6AgSyWWmn4
> > > >
> > > > Best,
> > > > Chang
> > > >
> > > > On Sunday, December 8, 2013 at 1:21 PM, Amir Taaki wrote:
> > > >
> > > > > Are you able to construct the tx using the command line tools sx?
> > > > >
> > > > > Then you can port the code as you use it piece by piece into your own
> > > > > application.
> > > > >
> > > > > You need to update sx from the git repository (that should be fixed).
> > > > > Here's what I see:
> > > > >
> > > > > hash: 43919afd984bf86a421bc5d32ddc25bbaad996d6429a0e6a81b6d6059aa86db2
> > > > > version: 1
> > > > > locktime: 0
> > > > > Input:
> > > > > previous output:
> > > > > cb502ebca60cfe43bf0cd1c91a50ab07590eb8d35c3b2d29306693dfa36047d0:0
> > > > > script: [
> > > > > 3045022100b4760147383d74cc68c1004755d3e210949370358309d5d64e81f3ec0e54ba470220540d21755a68946f19eaebb1b7b3c5649ee5825ac7363bdededcf445f2912a3001
> > > > > ] [
> > > > > 04a0160a564377fc9af6100827cf0726bf794aa57c6b908731b0cd6057da8a8ae01597c54fdce5b0b58cbd87de98821c71c638724dac5c93c7539d7f3351c20a5f
> > > > > ]
> > > > > sequence: 4294967295
> > > > > address: 17uSy4fSMZPd5c2iR8LubbccEB5jyJi9rc
> > > > > Output:
> > > > > value: 10
> > > > > script: 2 [
> > > > > 04a0160a564377fc9af6100827cf0726bf794aa57c6b908731b0cd6057da8a8ae01597c54fdce5b0b58cbd87de98821c71c638724dac5c93c7539d7f3351c20a5f
> > > > > ] [
> > > > > 04a0160a564377fc9af6100827cf0726bf794aa57c6b908731b0cd6057da8a8ae01597c54fdce5b0b58cbd87de98821c71c638724dac5c93c7539d7f3351c20a5f
> > > > > ] 2 checkmultisig
> > > > > Output:
> > > > > value: 309999990
> > > > > script: dup hash160 [ 4bbc0f7fff6b9135e3bf1a472b464ec127947cfb ]
> > > > > equalverify checksig
> > > > > address: 17uSy4fSMZPd5c2iR8LubbccEB5jyJi9rc
> > > > >
> > > > >
> > > > > On 08/12/13 21:18, Chang Lan wrote:
> > > > > > Thanks Amir!
> > > > > >
> > > > > > I am using testnet so the TXDATA is for testnet:
> > > > > >
> > > > > > 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
> > > > > >
> > > > > > sx showtx worked well but when I used the command
> > > > > >
> > > > > > echo TXDATA | sx validsx
> > > > > >
> > > > > > I got
> > > > > >
> > > > > > terminate called after throwing an instance of
> > > > > > 'libbitcoin::end_of_stream’
> > > > > >
> > > > > > Best,
> > > > > > Chang
> > > > > >
> > > > > > On Sunday, December 8, 2013 at 12:59 PM, Amir Taaki wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > Your code looks correct. You can use the command:
> > > > > > >
> > > > > > > echo TXDATA | sx validtx
> > > > > > >
> > > > > > > to check the correctness of the tx (but I'm not sure if the reported
> > > > > > > erros are always correct - I need to investigate that).
> > > > > > >
> > > > > > > You can also examine the data using:
> > > > > > >
> > > > > > > echo TXDATA | sx showtx
> > > > > > >
> > > > > > > your sign code is correct, and the other code looks good. If you
> > > > > > > give me
> > > > > > > the hex I can see if I spot anything.
> > > > > > >
> > > > > > > Here's some code for constructing transactions:
> > > > > > >
> > > > > > > https://github.com/spesmilo/sx/blob/master/src/wallet.cpp
> > > > > > > (see line 361 to 521)
> > > > > > >
> > > > > > > https://github.com/darkwallet/python-obelisk/blob/master/examples/mktx.py
> > > > > > > https://github.com/darkwallet/python-obelisk/blob/master/obelisk/bitcoin.py
> > > > > > > (see line 998)
> > > > > > >
> > > > > > > On 08/12/13 20:50, Chang Lan wrote:
> > > > > > > > Hi there,
> > > > > > > >
> > > > > > > > I tried making a valid transaction using libbitcoin, but it seems
> > > > > > > > that
> > > > > > > > the transaction turns out to be invalid. Below is the code
> > > > > > > > snippet that
> > > > > > > > I used to create a transaction. Can anyone point out if I did it
> > > > > > > > wrong?
> > > > > > > > Thanks!
> > > > > > > >
> > > > > > > > void add_input(transaction_type& tx, const output_point& output)
> > > > > > > > {
> > > > > > > > transaction_input_type input;
> > > > > > > > output_point& prevout = input.previous_output;
> > > > > > > > prevout = output;
> > > > > > > > input.sequence = 4294967295;
> > > > > > > > tx.inputs.push_back(input);
> > > > > > > > }
> > > > > > > >
> > > > > > > >
> > > > > > > > bool sign(transaction_type& tx, size_t input_index, const
> > > > > > > > elliptic_curve_key& key, const script_type& script_code)
> > > > > > > > {
> > > > > > > > transaction_input_type& input = tx.inputs[input_index];
> > > > > > > > const data_chunk public_key = key.public_key();
> > > > > > > > if (public_key.empty())
> > > > > > > > {
> > > > > > > > std::cerr << "internal error getting public key" << std::endl;
> > > > > > > > return false;
> > > > > > > > }
> > > > > > > > hash_digest tx_hash = script_type::generate_signature_hash(tx,
> > > > > > > > input_index, script_code, 1);
> > > > > > > > if (tx_hash == null_hash)
> > > > > > > > {
> > > > > > > > std::cerr << "error generating signature hash" << std::endl;
> > > > > > > > return false;
> > > > > > > > }
> > > > > > > > data_chunk signature = key.sign(tx_hash);
> > > > > > > > signature.push_back(0x01);
> > > > > > > >
> > > > > > > > script_type input_script;
> > > > > > > > input_script.push_operation({opcode::special, signature});
> > > > > > > > std::cout << key.public_key().size() << std::endl;
> > > > > > > > input_script.push_operation({opcode::special, key.public_key()});
> > > > > > > > tx.inputs[input_index].script = input_script;
> > > > > > > >
> > > > > > > > return true;
> > > > > > > > }
> > > > > > > >
> > > > > > > >
> > > > > > > > bool create_channel_tx(transaction_type& tx, const data_chunk&
> > > > > > > > payee_public_key, const data_chunk& payer_public_key, uint64_t value)
> > > > > > > > {
> > > > > > > > /* … */
> > > > > > > > */* called add_input() for each input */*
> > > > > > > > // output 1
> > > > > > > > script_type out_script = build_contract_script(acc.key.public_key(),
> > > > > > > > remote_public_key);
> > > > > > > > transaction_output_type output;
> > > > > > > > output.value = value;
> > > > > > > > output.script = out_script;
> > > > > > > > tx.outputs.push_back(output);
> > > > > > > > // output 2
> > > > > > > > payment_address payaddr;
> > > > > > > > set_public_key(payaddr, acc.key.public_key());
> > > > > > > > script_type back_script = build_pubkey_hash_script(payaddr.hash());
> > > > > > > > transaction_output_type back_output;
> > > > > > > > back_output.value = collected_value - value;
> > > > > > > > back_output.script = back_script;
> > > > > > > > tx.outputs.push_back(back_output);
> > > > > > > >
> > > > > > > > // sign each input
> > > > > > > > for (size_t i = 0; i < tx.inputs.size(); ++i)
> > > > > > > > {
> > > > > > > > sign(tx, i, acc.key, back_script);
> > > > > > > > }
> > > > > > > > return true;
> > > > > > > > }
> > > > > > > >
> > > > > > > >
> > > > > > > > Chang
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > _______________________________________________
> > > > > > > > Libbitcoin mailing list
> > > > > > > > Libbitcoin@??? (mailto:Libbitcoin@lists.dyne.org) <mailto:Libbitcoin@lists.dyne.org>
> > > > > > > > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
> > > > > > > >
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > Libbitcoin mailing list
> > > > > > > Libbitcoin@??? (mailto:Libbitcoin@lists.dyne.org) <mailto:Libbitcoin@lists.dyne.org>
> > > > > > > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
> > > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Libbitcoin mailing list
> > > > Libbitcoin@??? (mailto:Libbitcoin@lists.dyne.org) <mailto:Libbitcoin@lists.dyne.org>
> > > > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
> > > >
> > >
> > > _______________________________________________
> > > Libbitcoin mailing list
> > > Libbitcoin@??? (mailto:Libbitcoin@lists.dyne.org) <mailto:Libbitcoin@lists.dyne.org>
> > > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
> > >
> >
> >
> >
> >
> > _______________________________________________
> > Libbitcoin mailing list
> > Libbitcoin@??? (mailto:Libbitcoin@lists.dyne.org)
> > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
> >
>
>
> _______________________________________________
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> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
>
>
>