Trending questions in Blockchain

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How to create channels in Hyperledger Sawtooth?

There are two features that I know ...READ MORE

Aug 9, 2018 in Blockchain by slayer
 • 29,370 points • 2,142 views
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1 answer

CompleteableFuture in a loop contruct in a private Ethereum Blockchain

You might be able to benefit from ...READ MORE

Sep 14, 2018 in Blockchain by slayer
 • 29,370 points • 580 views
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1 answer

How to interact with smart contract in GO?

I am providing an example. Modify it ...READ MORE

Jul 26, 2018 in Blockchain by digger
 • 26,740 points • 2,721 views
0 votes
1 answer

Cant install python module for python3.6 to use Jsonrpc for altcoin

Try this  VERSION=0.1 python3 setup.py install and there's also ...READ MORE

Sep 7, 2018 in Blockchain by digger
 • 26,740 points • 862 views
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1 answer

Problem while compiling BitcoinJS for browser

The problem iss that you are using browserify wrong ...READ MORE

Aug 30, 2018 in Blockchain by digger
 • 26,740 points • 1,197 views
0 votes
1 answer

com.coinbase.api.exc­eption.UnauthorizedE­xception

Start by creating a new OAuth 2.0 ...READ MORE

Sep 5, 2018 in Blockchain by digger
 • 26,740 points • 927 views
0 votes
1 answer

How to solve “More than one instance of bitcore-lib found” error?

There is a temp solution here. ~/bitcore-explorers/node_modules/bitcore-lib/index.js line 7: bitcore.versionGuard ...READ MORE

Jul 25, 2018 in Blockchain by slayer
 • 29,370 points • 2,737 views
0 votes
1 answer

Blockchain Hyperledger private key not able to send coins

From the code you posted, if(whichType == TX_SCRIPTHASH){//pay ...READ MORE

Sep 14, 2018 in Blockchain by digger
 • 26,740 points • 528 views
0 votes
1 answer

Google API post request to IBM blockchain error

You have specified query as parameter to method and function but if you ...READ MORE

Sep 14, 2018 in Blockchain by digger
 • 26,740 points • 523 views
0 votes
1 answer

How to “unrecognized import path error” while using go for hyperledger fabric?

The solution to this problem is as ...READ MORE

Jul 27, 2018 in Blockchain by slayer
 • 29,370 points • 2,632 views
0 votes
1 answer

Python authenticated calls to bitfinex exchange

You should use byte type api_secret. api_secret = ...READ MORE

Sep 7, 2018 in Blockchain by slayer
 • 29,370 points • 815 views
0 votes
1 answer

Angular 4: not able to iterate over an array

Replace this : <div *ngFor="let price of prices"> ...READ MORE

Sep 3, 2018 in Blockchain by digger
 • 26,740 points • 987 views
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1 answer

Boost issue while building Litecoin

Try reinstalling boost (uninstall and install again), ...READ MORE

Sep 7, 2018 in Blockchain by slayer
 • 29,370 points • 798 views
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1 answer

How to get genesis block value at new bitcoin source?

chainparams.cpp contains a line of code that ...READ MORE

Sep 4, 2018 in Blockchain by digger
 • 26,740 points • 920 views
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1 answer

How to send events in Hyperledger Composer?

You define the event in your .cto ...READ MORE

Aug 25, 2018 in Blockchain by Perry
 • 17,100 points • 1,372 views
0 votes
1 answer

How to create light wallet in Web3J?

You can use this method to create ...READ MORE

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,988 views
0 votes
1 answer

Smart contract limitations in Ethereum and Hyperledger Fabric

No, the contract cannot sign on behave of B. A ...READ MORE

Sep 11, 2018 in Blockchain by Christine
 • 15,790 points • 601 views
0 votes
1 answer

Can't open a to big .csv file in python

You can't "split a file", but you can read ...READ MORE

Sep 3, 2018 in Blockchain by slayer
 • 29,370 points • 943 views
0 votes
1 answer

Coinbase python APIError: Failed to send money

You might want to look at the response of ...READ MORE

Sep 5, 2018 in Blockchain by slayer
 • 29,370 points • 855 views
0 votes
1 answer

Bruteforcing OpenSSL to decrypt bitcoin backup.

You need to add -passin pass:XXX options, where XXX ...READ MORE

Aug 24, 2018 in Blockchain by digger
 • 26,740 points • 1,371 views
0 votes
1 answer

JSON valid numerical param in Perl

Use 0.0 + sprintf('%.8f', $btc), 0.0 + $data{'amount'} READ MORE

Sep 11, 2018 in Blockchain by digger
 • 26,740 points • 587 views
0 votes
1 answer

SteemJS not working in Firefox/IE

npm install adcpm/steem#dev Just build it from develop ...READ MORE

Sep 14, 2018 in Blockchain by digger
 • 26,740 points • 459 views
0 votes
1 answer

How to get return value of external function?

You can do this. I have shared ...READ MORE

Aug 13, 2018 in Blockchain by digger
 • 26,740 points • 1,832 views
0 votes
1 answer

React Native to make requests to bitcoin wallet

I found an API that could help ...READ MORE

Aug 23, 2018 in Blockchain by digger
 • 26,740 points • 1,397 views
+1 vote
1 answer

Node.js API wrapper for altcoin exchange

In order to pass these variables to ...READ MORE

Sep 10, 2018 in Blockchain by digger
 • 26,740 points • 578 views
0 votes
1 answer

Ubuntu "get attach" command failed

The geth.ipc gets created when Geth is succesfully launched.It ...READ MORE

Sep 7, 2018 in Blockchain by Surya
 • 746 views
0 votes
1 answer

How to retrieve data from a block to a blockchain?

web3.eth.getTransaction(txHash) will returns transaction details like blockHash, transactionIndex, ...READ MORE

Jun 27, 2018 in Blockchain by Perry
 • 17,100 points • 3,883 views
0 votes
1 answer

How to read file from subprocess.open in python?

you call: out, err = p.communicate() READ MORE

Aug 24, 2018 in Blockchain by digger
 • 26,740 points • 1,344 views
0 votes
1 answer

Not able to generate WIF from extended private key

I found the answer to this in the ...READ MORE

Aug 29, 2018 in Blockchain by digger
 • 26,740 points • 1,124 views
0 votes
1 answer

How to get the number of tokens in the Bitcoin network?

This information can easily be calculated by ...READ MORE

Aug 31, 2018 in Blockchain by Christine
 • 15,790 points • 1,015 views
0 votes
1 answer

Serializing payment details in google protocol buffers

This is how you can do it: serialized_payment_details ...READ MORE

Sep 11, 2018 in Blockchain by slayer
 • 29,370 points • 537 views
0 votes
1 answer

How to use std::iterator with basic type uint8_t*?

std::reverse_iterator takes the original iterator type as ...READ MORE

Aug 24, 2018 in Blockchain by slayer
 • 29,370 points • 1,312 views
0 votes
1 answer

Bitaps.com Error Code 10

Mistake in word qouta. Need quota $rules = [ ...READ MORE

Sep 7, 2018 in Blockchain by slayer
 • 29,370 points • 703 views
0 votes
2 answers

sendmany bitcoin command problem in Dynamic PHP array

You might consider spliiting that array up ...READ MORE

Sep 3, 2018 in Blockchain by Tenneb
 • 895 views
+1 vote
1 answer

How do I check the history of my ethereum wallet using blockchain API?

f I understand well, you're looking for ...READ MORE

Aug 2, 2018 in Blockchain by Christine
 • 15,790 points • 2,198 views
0 votes
2 answers

Coinbase-php createButton() throws 401 error

I found the explanation for this on ...READ MORE

Aug 30, 2018 in Blockchain by Naman
 • 983 views
0 votes
1 answer

Coinbase spot price SSL Error: does not support SSL at Request

Add 'strictSSL': false to the new client: var btcClient = ...READ MORE

Sep 6, 2018 in Blockchain by digger
 • 26,740 points • 719 views
0 votes
1 answer

Blockchain: send payments to faucetbox

well there it is its work but ...READ MORE

Sep 7, 2018 in Blockchain by Vicky
 • 663 views
0 votes
1 answer

Bitcoin address SHA256 pipe gives wrong output

You need to hash the raw byte ...READ MORE

Sep 5, 2018 in Blockchain by digger
 • 26,740 points • 749 views
0 votes
1 answer

Basic pusher connection to cryptsy using javascript

Try this <script src="//js.pusher.com/2.2/pusher.min.js" type="text/javascript"></script> <script type="text/javascript"> var pusher = ...READ MORE

Sep 11, 2018 in Blockchain by slayer
 • 29,370 points • 490 views
0 votes
1 answer

First block of bitcoin block gives empty string

Most likely the first byte is not ...READ MORE

Sep 4, 2018 in Blockchain by slayer
 • 29,370 points • 784 views
0 votes
1 answer

Bitcoin: error parsing json

Make these changes in your code: json="'{" to ...READ MORE

Aug 22, 2018 in Blockchain by digger
 • 26,740 points • 1,333 views
0 votes
1 answer

How to Track Payment API in Coinbase

Use the callback_url option as described in the API. ...READ MORE

Sep 5, 2018 in Blockchain by slayer
 • 29,370 points • 730 views
0 votes
1 answer

restarting bitcoin tesnet docker container, error flag '-ti'

`docker ps -a' shows you the containers, ...READ MORE

Sep 7, 2018 in Blockchain by Prakash
 • 643 views
0 votes
1 answer

Solidity difference array with and without new keyword.

Creating arrays with variable length in memory ...READ MORE

Aug 16, 2018 in Blockchain by digger
 • 26,740 points • 1,591 views
0 votes
1 answer

How can I take the required info and send it to a div in the html page?

window.onload=function(){ var anima = document.getElementById("crypto"); var ret = document.getElementById("btn"); ret.addEventListener("click",function(){ var ...READ MORE

Sep 6, 2018 in Blockchain by digger
 • 26,740 points • 683 views
0 votes
1 answer

How to receive Json callback?

Try using $get = file_get_contents("php://input"); READ MORE

Aug 29, 2018 in Blockchain by slayer
 • 29,370 points • 1,023 views
0 votes
1 answer

Generating Bitcoin addresses from a xpubkey

Via https://bitcointalk.org/index.php?topic=1242247.0 var pubkey = ExtPubKey.Parse("xpub6CUGRUonZSQ4TWtTMmzXdrXDtypWKiKrhko4egpiMZbpiaQL2jkwSB1icqYh2cfDfVxdx4df189oLKnC5fSwqPfgyP3hooxujYzAu3fDVmz"); var newAddress = pubkey.Derive(0).Derive(0).PubKey.GetAddress(Network.Main); Console.WriteLine(newAddress); It ...READ MORE

Aug 21, 2018 in Blockchain by slayer
 • 29,370 points • 1,366 views
+1 vote
1 answer

How do I use ZF2 I18n currencyformatter to format bitcoin?

From ZF2's documentation at http://framework.zend.com/manual/2.3/en/modules/zend.i18n.view.helpers.html I found the following ...READ MORE

Sep 10, 2018 in Blockchain by digger
 • 26,740 points • 449 views
0 votes
1 answer

Is it possible to claim BCH without knowing private key?

You can't claim BCH without knowing private ...READ MORE

Sep 5, 2018 in Blockchain by Christine
 • 15,790 points • 693 views
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