Trending questions in Blockchain

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1 answer

How to control bitcoind from another machine?

In your bitcoin.config file replace rpcallowip with ...READ MORE

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 1,032 views
+1 vote
1 answer

How to perform a simple 1-to-1 Bitcoin Transaction with Bitcore?

What is the argument utxos int the ...READ MORE

Jul 20, 2018 in Blockchain by charlie_brown
 • 7,720 points • 2,196 views
0 votes
1 answer

Getting error while building Bitcoind on MAC OS

First of all try building a non-GUI ...READ MORE

Aug 20, 2018 in Blockchain by slayer
 • 29,370 points • 886 views
+1 vote
1 answer

Protocols used in a distributed/dlt system for the nodes to establish communication

yes all are over TCP/IP connections secured ...READ MORE

Aug 6, 2018 in Blockchain by aryya
 • 7,460 points • 1,451 views
0 votes
1 answer

How to call smart contract methods from transactions?

You can do this using a wrapper. ...READ MORE

Aug 13, 2018 in Blockchain by slayer
 • 29,370 points • 1,188 views
0 votes
1 answer

How to open bitcoin-qt wallet with bitcoinj?

I found this issue solved at the ...READ MORE

Aug 24, 2018 in Blockchain by slayer
 • 29,370 points • 715 views
0 votes
1 answer

Can’t find value for key while using CouchDB for Fabric.

In the output you have mentioned: {   "id": ...READ MORE

Jul 31, 2018 in Blockchain by slayer
 • 29,370 points • 1,745 views
0 votes
1 answer

Why RLP encoding is used in Ethereum?

RLP is intended to be a highly ...READ MORE

Aug 4, 2018 in Blockchain by Mohini
 • 260 points • 1,638 views
0 votes
1 answer

How to solve Yobit API connection 503 server error?

Try to use "https://www.yobit.net/api/3/info" URL Instead of ...READ MORE

Aug 21, 2018 in Blockchain by slayer
 • 29,370 points • 832 views
+4 votes
2 answers

I am unable to connect Ganache with Truffle/Npm Dev server. Pls help.

The issue is at CurrentProvider. Give the url ...READ MORE

Mar 26, 2018 in Blockchain by Perry
 • 17,100 points
edited Oct 11, 2018 by Omkar • 2,719 views
0 votes
1 answer

How to use Proc/lamba returned from a method in Ruby?

You need to remove the colon: list.select(&valid_transaction) The & ...READ MORE

Aug 24, 2018 in Blockchain by digger
 • 26,740 points • 702 views
0 votes
1 answer

What is approve and allowance method?

approve(): This method is used by one ...READ MORE

Jul 30, 2018 in Blockchain by digger
 • 26,740 points • 1,800 views
0 votes
1 answer

What is the format for crypto-config.yaml and configtx.yaml in Hyperledger Fabric?

You can find the details you want ...READ MORE

Jul 12, 2018 in Blockchain by slayer
 • 29,370 points • 2,553 views
0 votes
1 answer

Not able to build bitcoind on mac.

You have to install pkg-config before running ...READ MORE

Aug 23, 2018 in Blockchain by slayer
 • 29,370 points • 721 views
0 votes
1 answer

How to use Blockchain receive API without exchange rate?

Your code contains the amount in USD ...READ MORE

Aug 21, 2018 in Blockchain by Perry
 • 17,100 points • 905 views
0 votes
1 answer

REQUEST_TIMEOUT error in Hyperledger Fabric, Linux

My docker version was 1.7. And its ...READ MORE

Jul 6, 2018 in Blockchain by Christine
 • 15,790 points • 2,781 views
0 votes
1 answer

How to parse Json data from remote server?

Yes, you can do it use the ...READ MORE

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 966 views
0 votes
1 answer

How to get current value of bitcoin?

You can use json_decode to transform it ...READ MORE

Aug 20, 2018 in Blockchain by digger
 • 26,740 points • 835 views
0 votes
1 answer

How to set chaincode path in Hyperledger Fabric?

For chaincode to properly run on your ...READ MORE

Jul 27, 2018 in Blockchain by digger
 • 26,740 points • 1,868 views
+4 votes
2 answers

How do I create a new block in Hyperledger Fabric?

This link might help you: https://github.com/hyperledger/fabric-sample ...READ MORE

Oct 11, 2018 in Blockchain by Sahu
 • 2,674 views
+1 vote
1 answer

How can I modify stored data in blockchain??

One of the important feature of a ...READ MORE

Apr 18, 2018 in Blockchain by Christine
 • 15,790 points • 6,150 views
0 votes
1 answer

NBitcoin throws InvalidOperationException with the message: “Mac HMACSHA256 not recognised.”

If someone would like to figure out ...READ MORE

Aug 27, 2018 in Blockchain by digger
 • 26,740 points • 502 views
0 votes
0 answers

How do I identify invoking peer/organisation inside Hyperledger Fabric V1.0 chaincode?

Is there any way to know the ...READ MORE

Aug 23, 2018 in Blockchain by Christine
 • 15,790 points • 741 views
0 votes
1 answer

How to extract Ethereum Blockchain data?

You are using web3.eth.getTransaction(txHash) web3.eth.getTransaction(txHash) will only return info ...READ MORE

Jul 30, 2018 in Blockchain by slayer
 • 29,370 points • 1,718 views
0 votes
1 answer

How can Blockchain be implemented for android development?

Essentially you need to understand what is ...READ MORE

Aug 10, 2018 in Blockchain by Johnathon
 • 9,090 points • 1,220 views
0 votes
1 answer

Cant understand cpp snippet

From the function: ...READ MORE

Aug 27, 2018 in Blockchain by slayer
 • 29,370 points • 469 views
0 votes
1 answer

Where does Hyperledger Fabric store the database for the Blockchain? [closed]

The Hyperledger Fabric stores the database in ...READ MORE

Jul 13, 2018 in Blockchain by Perry
 • 17,100 points • 2,368 views
0 votes
1 answer

Bitcoin transaction “amount is below the current minimum” error

I went through the code and the ...READ MORE

Aug 21, 2018 in Blockchain by slayer
 • 29,370 points • 687 views
0 votes
1 answer

Bitcoin transaction “"You must provide a recipient address" ” error.

You need an account with BlockChain to ...READ MORE

Aug 20, 2018 in Blockchain by digger
 • 26,740 points • 730 views
0 votes
1 answer

How to solve EACCES:permission denied error in Hyperledger Composer?

It seems like there is no required ...READ MORE

Jul 11, 2018 in Blockchain by digger
 • 26,740 points • 2,455 views
0 votes
1 answer

Are there any plans for composer, to make usage of the recently released Side DB feature?

As of yet, it isn't supported by ...READ MORE

Aug 25, 2018 in Blockchain by Perry
 • 17,100 points • 532 views
0 votes
1 answer

Encoding integers in solidity

There are different ways to do this ...READ MORE

Aug 13, 2018 in Blockchain by digger
 • 26,740 points • 1,014 views
0 votes
1 answer

What are the differences between chain and state database in hyperledger fabric?

There are two place which "store" data ...READ MORE

Jul 11, 2018 in Blockchain by Shashank
 • 10,400 points • 2,411 views
0 votes
1 answer

How to convert Bitcoin rate to USD?

You can use blockchain.info API: URL: https://blockchain.info/ticker Response: { "USD" ...READ MORE

Aug 21, 2018 in Blockchain by slayer
 • 29,370 points • 637 views
0 votes
1 answer

How can I store picture in hypereldger channel?

Design of relationships between assets, participants and ...READ MORE

Aug 21, 2018 in Blockchain by Perry
 • 17,100 points • 660 views
0 votes
1 answer

How to set up hyperledger fabric on 2 different PCs?

I would recommend that you look at ...READ MORE

Aug 2, 2018 in Blockchain by aryya
 • 7,460 points • 1,473 views
0 votes
1 answer

How to check history of blockchain.info wallet?

In the link you mentioned(https://blockchain.info/q), there are ...READ MORE

Jul 23, 2018 in Blockchain by slayer
 • 29,370 points • 1,875 views
0 votes
1 answer

Webpack destroying code in production.

The problem is that Uglify mangles too ...READ MORE

Aug 22, 2018 in Blockchain by slayer
 • 29,370 points • 568 views
0 votes
1 answer

How to debug chaincode? LedgerError - ResourceNotFound

The following command, CORE_CHAINCODE_ID_NAME=mycc CORE_PEER_ADDRESS=0.0.0.0:30303 ./chaincode_example02 doesn't deploy the chaincode, ...READ MORE

Aug 3, 2018 in Blockchain by charlie_brown
 • 7,720 points • 1,380 views
0 votes
1 answer

How to use third party contract to send ERC token?

You can do it by using a ...READ MORE

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,066 views
0 votes
1 answer

Truffle tutorials "Error:recipient address is not a contract address"

It appears like you have already migrated ...READ MORE

Aug 8, 2018 in Blockchain by slayer
 • 29,370 points • 1,148 views
0 votes
1 answer

How to set bitcoin reward less than 1 coin?

Coin is defined here: https://github.com/bitcoin/bitcoin/blob/master/src/amount.h#L16 static const CAmount COIN ...READ MORE

Aug 22, 2018 in Blockchain by digger
 • 26,740 points • 530 views
0 votes
1 answer

Who decided the rules for Cryptocurrency in the first place?

A single miner can tamper with a ...READ MORE

Aug 22, 2018 in Blockchain by Christine
 • 15,790 points • 648 views
0 votes
1 answer

How do i add images in hyperledger?

In your registry, you can Base64-ify your ...READ MORE

Aug 21, 2018 in Blockchain by Perry
 • 17,100 points • 580 views
0 votes
1 answer

Problem with installing testrpc using python-pip.

You are facing this error because you ...READ MORE

Aug 10, 2018 in Blockchain by slayer
 • 29,370 points • 1,024 views
0 votes
1 answer

Can I make my smart contract private in Quorum?

Yes, it is possible. You can look ...READ MORE

Jul 23, 2018 in Blockchain by slayer
 • 29,370 points • 1,796 views
0 votes
1 answer

Where is query displayed in Hyperledger?

Composer configures the named queries for a ...READ MORE

Aug 17, 2018 in Blockchain by Shashank
 • 10,400 points • 739 views
0 votes
1 answer

Implementing Giveaways in Blockchain

I have found a similar question. The ...READ MORE

Aug 17, 2018 in Blockchain by digger
 • 26,740 points • 707 views
+1 vote
1 answer

Is it possible to exchange the token for other tokens we create in an Ethereum Smart Contract?

Yes you can do that through something ...READ MORE

Aug 10, 2018 in Blockchain by Perry
 • 17,100 points • 952 views
0 votes
1 answer

Terminating transaction-cli

You can use the -f, -finish <script> which executes ...READ MORE

Aug 20, 2018 in Blockchain by slayer
 • 29,370 points • 559 views
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