i am trying to get bitcoin addresses from my blockchain stored on server. my bitcoin is up to date. index mode is not enabled, as i dont want UTXO database. i tried using https://github.com/znort987/blockparsercompiled it succesfully. strated like this [root@blockparser]# env BLOCKCHAIN_DIR="/home/user2/" ./parser allBalances > allBalances.txt
info: mem at start = 0.000 Gigs
info: starting command "allBalances"
info: loading block chain from directory: /home/user2/.bitcoin
info: block chain size = 136.344 Gigs
info: initializing hash tables
info: estimated number of blocks = 1071.27K
info: estimated number of transactions = 276.71M
info: done initializing hash tables - mem = 0.000 Gigs
info: pass 1 -- walk all blocks and build headers ...
info: pass 1 -- took 48 secs, 488497 blocks, 136.34 Gigs, 2862.34 Megs/secs , 89430 early link misses, mem=0.000 Gigs
info: pass 2 -- link all blocks ...
info: pass 2 -- done, did 89430 late links
info: pass 3 -- wire longest chain ...
info: pass 3 -- done, maxHeight=488497
info: pass 4 -- full blockchain analysis (with index)...
info: computing balance for all addresses
info: hit ^C to interrupt and dump current, valid state of ledger
info: 1 blocks, 0.000 MegaAddrs ,
info: 141229 blocks, 1.738 MegaAddrs ,
info: 166873 blocks, 3.058 MegaAddrs ,
info: 181587 blocks, 3.939 MegaAddrs ,
info: 186771 blocks, 4.633 MegaAddrs , but it crashes in the middle., or some times at the end., i tried running it many times., previously i got memory related error., so freed up memory and increased swap on my server. then tried running it again right now i am getting info: 481823 blocks, 295.351 MegaAddrs ,
fatal: failed to locate upstream transaction
i counted and looks like it aborts when 2000 blocks are remaining. i am not the only one getting this error.. https://github.com/znort987/blockparser/issues/65so what you guys are using ? to get data extracted from blockchain files. i have 64 gigs of ram, i7 , ssd . centos 7 x64 is there any other tool ? optimized ? or any other fork thanks for your time,. |
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why not find why is your bitcoind is crashing a nd fixing that issue ?
you can always look in to log
check last 200 lines ,after crash, you will find you answer.
tail -n 200 ~/.bitcoin/debug.log
you can restart bitcoind after crash in multiple ways .
1) start bitcoind every minute cron.
only one session is allowed of bitcoind, so you dont have to check whether bitcoind is already running
simple cron command will work
* * * * * bitcoind
2) check if bitcoind process is running, if not then start using cronjobs.
you need a bash script to check if bitcoind is runnig, then run that script every minute using cronjob.
3) check if your bitcoind's port,( default . 8333) is open, if not, then start bitcoind.
hope this helps.,
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i am looking at tx json output at blockchain.info here is simple tx for ref. using 1 input and 1 output. https://blockchain.info/tx/727b2cd08e728aeb08580333207c52d0ddf3ba47f85bd59241c3d92436f5fdd5{
"ver":2,
"inputs":[
{
"sequence":4294967295,
"witness":"",
"prev_out":{
"spent":true,
"tx_index":188897912,
"type":0,
"addr":"3KeMARg9fppMVGytgyVJpc37oAXWyRbRuv",
"value":272135,
"n":0,
"script":"a914c4f11390a7b4fcb4ffc4bd7e756596c706d6098887"
},
"script":"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"
}
],
"weight":1360,
"relayed_by":"0.0.0.0",
"out":[
{
"spent":false,
"tx_index":286831175,
"type":0,
"addr":"1NjTJADyoBLpqvM6kbc9VSMS9DnqUhMZ7R",
"value":236548,
"n":0,
"script":"76a914ee6210015c3768052078a9802b5a648b7991bfb188ac"
}
],
"lock_time":0,
"size":340,
"double_spend":false,
"time":1506651576,
"tx_index":286831175,
"vin_sz":1,
"hash":"727b2cd08e728aeb08580333207c52d0ddf3ba47f85bd59241c3d92436f5fdd5",
"vout_sz":1
}how can i get/calculate input's tx_hash. i mean prev_out input's tx hash. from the available info in current json ? i.e. from this {
"sequence":4294967295,
"witness":"",
"prev_out":{
"spent":true,
"tx_index":188897912,
"type":0,
"addr":"3KeMARg9fppMVGytgyVJpc37oAXWyRbRuv",
"value":272135,
"n":0,
"script":"a914c4f11390a7b4fcb4ffc4bd7e756596c706d6098887"
},
"script":"00483045022100af349f6a1d70f7d179559ea054cbd7869537f303915e2368b29a51041307562b022025b849a291dbaccfeafdb7e6678f586793c365a38d0c1685410b875e0f541611014730440220210616dd589181b0194ab73f0b7a6aac15c5b17c9c80621397bafbf0060ef56a0220247e5bca72de61be853027bcb2cfa3ceff1912e7019e7fa8573665fc559eb998014c69522102def45a0229881116d6000bc99921426c35a3a8bb92e1d4485679a23c93799f512102ef970eabc8e92f7dc357a93ded039e63137718df0bcd19b3e74f7f1a9ad870e621037d811aa90fcb399985f79699f4e92044b663e01456f22bbc50888eccaffb742f53ae"
}i want to get this 626ce1cc231f67c6895d92ee28aa4a595e86ffc7ba22de0d5a4469178ee84719 |
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nope, that is hardcoded in the program/protocol i gess.
if btc supply increases, then its value decreases.
if amount is fixed, then btc value increases.
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Videos are good if you want to learn Bitcoin by yourself or as additional resource. I am looking for slides and infographics in order to use it in a course. In addition, demonstrators would be interesting. I found this interesting demo where you are able to play (a little bit) with the concept behind the Blockchain: https://anders.com/blockchain/this is the best explanation i have seen so far. very clear. and to the point., just realized how the nounce works. |
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in windows.,
its braocasting tx and giving.
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information. Can you send me a screenshot in PM? but i cant able to compile it., what are you using ? i mean platform ? compiler ? linking libraries ? a) Qt/C++ (very old version) b) OpenSSL (very old version) for ::SHA256() method In fact there are only ~200 lines of code there. Isn't it easy to rewrite the code to make your own tool based on my concept? i have sent you pm. and yes, i am working on re writing code., will see how it goes. |
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but its not broadcasting tx to the nodes.
any clue ?
thanks
i am now trying it on windows. This is not "production tool". I created it for myself and it runs ok on windows. Do you have the config file (with a list of ip) located in current directory? What is the output of PushTxTool when you run it? Do you pass the transaction hex as an argument? in windows., its braocasting tx and giving. This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. but i cant able to compile it., what are you using ? i mean platform ? compiler ? linking libraries ? thanks |
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Thank you, building it in linux. It requires OpenSSL for ::SHA256() method You have to slighly modify project file, because the windows path is hardcoded there i have build it in linux, no errros, no warnings ., using qmake-qt5 make but its not broadcasting tx to the nodes. any clue ? thanks i am now trying it on windows. |
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whats the flow of the software ?
how does it work ?
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i wanted just to force feed my whole tx to peers of my choice, i mean i have list of peers, and i wanted to force feed them my newly created tx, as quick as possible, The tool you are looking for  Just put your list in config file and run executable with a tx in hex as parameter https://cloud.mail.ru/public/2rUa/zgcW6vf8g(sources included) Thank you, building it in linux. |
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sorry , i must have missed that, and my english isnt very good, so sometimes, i miss some things from very long sentences. thanks, looking in to it. i wanted just to force feed my whole tx to peers of my choice, i mean i have list of peers, and i wanted to force feed them my newly created tx, as quick as possible, |
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i tried this., and its working as expected., thanks -------------------------------------------------------------------------------------------------------- edit 1 : looks like it also says inv message before and wait for the reply and then push tx. |
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is this possible ?
i think not, but i need confirmation.
i have created a raw transaction and i have tx in hex.
can i push the tx hex to other peers without adding it in my mempool ?
but as per the bitcoin core source on , we only send tx hash hex, to peers , and if they dont have it, then we send full tx hex.
something like this.
but i need more details.
i am planning to create tx and just feed it to the peers. if that is possible.
thanks
Yes. Simply broadcast it in serialized binary format. You will still add it to the mempool once it propagates back to you however. In order to do what you want you need to change the underlying code to ignore your transactions in the mempool. so it will be like relay node., just relaying tx to other nodes. ------------------------------------------------------------------------------- |
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During a gold rush, sell shovels.
that is what i think.,
you cant beat warehouses filled with thousands of ASIC running 24x7
i did the calculations too and even though i have free electricity, i did nt bother to buy ASIC, becuase it was not simply profitable, becuase the difficulty keeps on increasing and delivery delay by ASIC suppliers., so when you receive actual ASIC, its already late.
good luck., i have said it before., buying bitcoins directly is the only profitable option for now.,
--------------------------------------------------------------------------------------------------------
seconds thought.
you are all thinking it wrong, while calculating btc price using current rate.
if you gonna sell btc and make money right now, then its not profitable.,
mining btc and holding on to them , until price reaches 20k-50k per btc. then selling is what i call profitable.
keep mining BTC. and keep holding em.
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china will ban anything and everything which they cant control.
they want to regulate i.e. make money out of it.
they banned google, i dont recall exactly why, but i guess ,something like sharing chinese people data and or having servers in china.
but i guess, banning bitcoin is temporary until they come up with some plan to make money from it.
thats my thinking.
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thank you , looking in to it. wiki says i can specify ip too. and not just ip range. -whitelist=<IP address or network> Whitelist peers connecting from the given IP address (e.g. 1.2.3.4) or CIDR notated network (e.g. 1.2.3.0/24). Can be specified multiple times. Whitelisted peers cannot be DoS banned and their transactions are always relayed, even if they are already in the mempool, useful e.g. for a gateway and i have other non trusted peers connecting to my node. so if i do whitebind., then all the nodes will be whitlisted , i dont think thats a good idea. ill try , the whitelist with cidr range. thnks |
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now i understand why my tx got confirmed in next block even though i had fees less than 5 sat/ byte.
i thought i was very lucky and people complaining on the forum of increased fees were stupid. but this thread clears the issue.
i thought this was becuase of segwit too., but could not confirm what caused this.
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i don't see, why is this necessary ?
i mean, it will only send data, so we will receive unconfirmed tx and confirmed blocks. (maybe superquick)
we cant send anything to the satellite directly. so at the end of the day, we will need internet , to do transactions. to send transactions.,
i am not sure, to whom it will be useful.
imho it will be continuous stream of txs, and few of the main servers which will act as nodes in bitcoin network, will send data to that satellite. which will get distributed .
instead its better to be connected to internet and act as a node, so you can get data and even send data. of
unconfirmed tx and confirmed blocks.
just my thinking, please correct me if i am wrong.
---------------------------
edit1 :
just realized, the reason for not having bitcoin client on my home machine is because slow internet speed.
so for initial setup i can hook up dish setup, and get whole blockchain. but how will satellite send old data to only me ?
may be they can implement something like channels., on specific channels., old data is sent in loop.
while on another channel ,new tx data is sent.
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