Re: Transaction Fee - getInputSum() / getFee()
So this is a limitation of Bitcoinj, I can solve this by abandoning this
dependency and using instead the bitcoin core project itself, correct?
On Monday, 10 July 2017 17:30:17 UTC-3, Andreas Schildbach wrote:
>
> It's a limitation of the Bitcoin protocol, inputs do not have value it's
> their connected output. In bitcoinj, only the Wallet class connects the
> inputs to their outputs; since you probably don't use the Wallet you
> likely need to do the connecting yourself.
>
>
> On 07/06/2017 05:54 PM, Wladimir Filho wrote:
> > Hi, I'm developing a block explorer in java using BITCOINJ version
> 0.14.4.
> >
> > There is a problem that can not be answered on the internet or in the
> > forum, I can not access information in the Transaction Input as the fee
> > or sum of the inputs. I tried to use the *SPVBlockStore* to
> > *MySQLFullPrunedBlockStore* for a complete copy of the blockchain, even
> > though the information remains "hidden".
> >
> > I need this information to develop services like:
> >
> > https://blockchain.info | https://live.blockcypher.com |
> > https://blockexplorer.com/
> >
> > Below is part of the application code:
> >
> >
> > |
> >
> >
> >
> >
> publicstaticMySQLFullPrunedBlockStorecreateStore(NetworkParametersparams,intblockCount)
>
>
> >
> >throwsBlockStoreException{
> >
> >
> >
>
> returnnewMySQLFullPrunedBlockStore(params,blockCount,DB_HOSTNAME,DB_NAME,DB_USERNAME,DB_PASSWORD);
>
>
> >
> > }
> >
> >
> > privatestaticNetworkParametersnetworkParameters
> =TestNet3Params.get();
> >
> >
> > publicstaticvoidmain(String[]args)throwsException {
> >
> >
> > MySQLFullPrunedBlockStorechainStore
> > =createStore(networkParameters,1000);
> >
> > FullPrunedBlockChainchain
> > =newFullPrunedBlockChain(networkParameters,chainStore);
> >
> >
> > PeerGrouppeerGroup =newPeerGroup(networkParameters,chain);
> >
> >peerGroup.addPeerDiscovery(newDnsDiscovery(networkParameters));
> >
> >
> >
> > BlockDownloadedManagerblockDM =newBlockDownloadedManager();
> >
> >
> > peerGroup.startAsync();
> >
> > peerGroup.addBlocksDownloadedEventListener(blockDM);
> >
> > peerGroup.downloadBlockChain();
> >
> > blockDEL.wait();
> >
> >
> >
> > peerGroup.stop();
> >
> > }
> >
> >
> >
> >
> publicclassBlockDownloadedManagerimplementsBlocksDownloadedEventListener{
> >
> >
> >
> >@Override
> >
> >
> >
>
> publicvoidonBlocksDownloaded(Peerpeer,Blockblock,FilteredBlockfilteredBlock,intblocksLeft){
>
>
> >
> >
> >
> System.out.println("-");
>
>
> >
> > System.out.println("hash - "+block.getHashAsString());
> >
> > System.out.println("transactions numer -
> > "+block.getTransactions().size());
> >
> >
> >
> >blockDetail(block);
> >
> >}
> >
> >
> >staticvoidblockDetail(Blockblock){
> >
> > Listtx_list =block.getTransactions();
> >
> >
> > for(Transactiont :tx_list){
> >
> > System.out.println("hash - "+t.getHashAsString());
> >
> > System.out.println("input sum -"+t.getInputSum());
> >
> >System.out.println("output sum -"+t.getOutputSum());
> >
> >System.out.println("fee calc -
> >
> "+(t.getInputSum().getValue()>0?t.getInputSum().getValue()-t.getOutputSum().getValue():0));
>
>
> >
> > System.out.println("fee -"+t.getFee());
> >
> > System.out.println("size - "+t.getMessageSize());
> >
> > }
> >
> >}
> >
> > }
> >
> >
> > |
> >
> >
> >
> >
> > *LOGS:*
> >
> >
> >
> -
>
>
> >
> > hash - e95fbedad07b7f95fa56e95ba11ed40f6a9f4b74fa2e0ce128ff6a42
> >
> > transactions numer - 1
> >
> > hash - d2e1049b895946525eb480070bcf678d94f709d6d621d79415dacb5ce73ac9db
> >
> > input sum -0
> >
> > output sum -50
> >
> > fee calc - 0
> >
> > fee -null
> >
> > size - 96
> >
> >
> -
>
>
> >
> > hash - 409087525f6977c2634e636509e20bc61bc1c6e86eb6d17a394d7a7a
> >
> > transactions numer - 2
> >
> > hash - 1b93146ca6ec328b8f9e976fd49cd8dd4b74f2c1277807c75e941991948701bb
> >
> > input sum -0
> >
> > output sum -50
> >
> > fee calc - 0
> >
> > fee -null
> >
> > size - 96
> >
> > hash - e2e5b1e29596105817b74f50cfde585baeeddb6125f9e03e8a22858def9293f2
> >
> > input sum -0
> >
> > output sum -49
> >
> > fee calc - 0
> >
> > fee -null
> >
> > size - 192
> >
> >
> -
>
>
> >
> > hash -
Re: Transaction Fee - getInputSum() / getFee()
It's a limitation of the Bitcoin protocol, inputs do not have value it's
their connected output. In bitcoinj, only the Wallet class connects the
inputs to their outputs; since you probably don't use the Wallet you
likely need to do the connecting yourself.
On 07/06/2017 05:54 PM, Wladimir Filho wrote:
> Hi, I'm developing a block explorer in java using BITCOINJ version 0.14.4.
>
> There is a problem that can not be answered on the internet or in the
> forum, I can not access information in the Transaction Input as the fee
> or sum of the inputs. I tried to use the *SPVBlockStore* to
> *MySQLFullPrunedBlockStore* for a complete copy of the blockchain, even
> though the information remains "hidden".
>
> I need this information to develop services like:
>
> https://blockchain.info | https://live.blockcypher.com |
> https://blockexplorer.com/
>
> Below is part of the application code:
>
>
> |
>
>
>
> publicstaticMySQLFullPrunedBlockStorecreateStore(NetworkParametersparams,intblockCount)
>
>throwsBlockStoreException{
>
>
>
> returnnewMySQLFullPrunedBlockStore(params,blockCount,DB_HOSTNAME,DB_NAME,DB_USERNAME,DB_PASSWORD);
>
> }
>
>
> privatestaticNetworkParametersnetworkParameters =TestNet3Params.get();
>
>
> publicstaticvoidmain(String[]args)throwsException {
>
>
> MySQLFullPrunedBlockStorechainStore
> =createStore(networkParameters,1000);
>
> FullPrunedBlockChainchain
> =newFullPrunedBlockChain(networkParameters,chainStore);
>
>
> PeerGrouppeerGroup =newPeerGroup(networkParameters,chain);
>
>peerGroup.addPeerDiscovery(newDnsDiscovery(networkParameters));
>
>
>
> BlockDownloadedManagerblockDM =newBlockDownloadedManager();
>
>
> peerGroup.startAsync();
>
> peerGroup.addBlocksDownloadedEventListener(blockDM);
>
> peerGroup.downloadBlockChain();
>
> blockDEL.wait();
>
>
>
> peerGroup.stop();
>
> }
>
>
>
> publicclassBlockDownloadedManagerimplementsBlocksDownloadedEventListener{
>
>
>
>@Override
>
>
>
> publicvoidonBlocksDownloaded(Peerpeer,Blockblock,FilteredBlockfilteredBlock,intblocksLeft){
>
>
> System.out.println("-");
>
> System.out.println("hash - "+block.getHashAsString());
>
> System.out.println("transactions numer -
> "+block.getTransactions().size());
>
>
>
>blockDetail(block);
>
>}
>
>
>staticvoidblockDetail(Blockblock){
>
> Listtx_list =block.getTransactions();
>
>
> for(Transactiont :tx_list){
>
> System.out.println("hash - "+t.getHashAsString());
>
> System.out.println("input sum -"+t.getInputSum());
>
>System.out.println("output sum -"+t.getOutputSum());
>
>System.out.println("fee calc -
> "+(t.getInputSum().getValue()>0?t.getInputSum().getValue()-t.getOutputSum().getValue():0));
>
> System.out.println("fee -"+t.getFee());
>
> System.out.println("size - "+t.getMessageSize());
>
> }
>
>}
>
> }
>
>
> |
>
>
>
>
> *LOGS:*
>
>
> -
>
> hash - e95fbedad07b7f95fa56e95ba11ed40f6a9f4b74fa2e0ce128ff6a42
>
> transactions numer - 1
>
> hash - d2e1049b895946525eb480070bcf678d94f709d6d621d79415dacb5ce73ac9db
>
> input sum -0
>
> output sum -50
>
> fee calc - 0
>
> fee -null
>
> size - 96
>
> -
>
> hash - 409087525f6977c2634e636509e20bc61bc1c6e86eb6d17a394d7a7a
>
> transactions numer - 2
>
> hash - 1b93146ca6ec328b8f9e976fd49cd8dd4b74f2c1277807c75e941991948701bb
>
> input sum -0
>
> output sum -50
>
> fee calc - 0
>
> fee -null
>
> size - 96
>
> hash - e2e5b1e29596105817b74f50cfde585baeeddb6125f9e03e8a22858def9293f2
>
> input sum -0
>
> output sum -49
>
> fee calc - 0
>
> fee -null
>
> size - 192
>
> -
>
> hash - d986f90a094b707e9ef4bf412d9a2a14df872e9409ddca7e0865bde6
>
> transactions numer - 2
>
> hash - 5ccf7e3494f5f05398b04f6bb3a72b635b2de6c494572c3e2078c8d89532abb3
>
> input sum -0
>
> output sum -55
>
> fee calc - 0
>
> fee -null
>
> size - 96
>
> hash - 23cc5dadd87f91c1fdce9c0ad090ce8f6e7fd7f79834ad1e579cd5a952c7c6b1
>
> input sum -0
>
> output sum -4904431364
>
> fee calc - 0
>
> fee -null
>
> size - 373
>
> -
>
> hash - 4480dd8aa5a351cb8d66fb332496f4d54c97fb87584322ab05342144
>
> transactions numer - 1
>
> hash - 848771ee8e27418ec8af0c08ecfa61d6af230dfd6ab25809f5792565b4f57b85
>
> input sum -0
>
> output sum -50
>
> fee calc - 0
>
> fee -null
>
>
