Most voted questions in Blockchain

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1 answer

Hyperledger: How to retrieve properties of relationship through query?

I dont think its possible using query. ...READ MORE

Nov 8, 2018 in Blockchain by Omkar
 • 69,210 points • 639 views
0 votes
1 answer

Hyperledger Fabric: How to convert channel.tx artifact into json?

You can use configtxgen to do this: configtxgen ...READ MORE

Nov 8, 2018 in Blockchain by Omkar
 • 69,210 points • 699 views
0 votes
1 answer

Hyperledger composer: How to allow create in transaction? Access Control

This is how you can do it: /** @returns ...READ MORE

Nov 8, 2018 in Blockchain by Omkar
 • 69,210 points • 737 views
0 votes
1 answer

Hyperledger Fabric SDK Design/Role of the application

When invoking functions, it has to be ...READ MORE

Nov 6, 2018 in Blockchain by Perry
 • 17,100 points • 580 views
0 votes
1 answer

Setting up Hyperledger Fabric Application with IBM Cloud.

You have to develop your "Client" application ...READ MORE

Nov 6, 2018 in Blockchain by Perry
 • 17,100 points • 530 views
0 votes
4 answers

Hyperledger: byfn.sh up: ERROR !!! FAILED to execute End-2-End Scenario.

Try these commands $ docker rm -f $(docker ...READ MORE

Nov 28, 2018 in Blockchain by kartik chauhan
 • 5,999 views
0 votes
1 answer

Hyperledger: How to update values from an asset?

This should work: return getAssetRegistry('org.rytle.Route').then(function(ar) { ...READ MORE

Nov 6, 2018 in Blockchain by Omkar
 • 69,210 points • 1,370 views
0 votes
1 answer

TypeError: argument must be a string node.js while encoding to hex string.

The error is in protobuf.Transaction.create headerSignature needs to be a string, ...READ MORE

Nov 6, 2018 in Blockchain by Omkar
 • 69,210 points • 3,086 views
0 votes
1 answer

Hyperledger Composer: REST Server transaction failed but returns 200 status

You need to return the function calls from the ...READ MORE

Nov 6, 2018 in Blockchain by Omkar
 • 69,210 points • 609 views
0 votes
1 answer

Hyperledger composer: Not able to issue identities from a Business network.

To specify your own affiliation you need ...READ MORE

Nov 6, 2018 in Blockchain by Omkar
 • 69,210 points • 1,249 views
0 votes
1 answer

Hyperledger Fabric: How to access transaction ID in invoke function?

You can access transaction ID in Invoke ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 2,176 views
0 votes
1 answer

Hyperledger Composer: How to Update Existing Assets?

get on an asset registry returns a ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 1,180 views
0 votes
1 answer

Hyperledger Fabric: PEM encoded certificate is required.

Hey, the syntax you are using is ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 1,555 views
0 votes
1 answer

Hyperledger composer: runtime install error card not found peerAdmin

The right way to do it is: downloadFabric.sh startFabric.sh createPeerAdminCard.sh If ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 944 views
0 votes
1 answer

Hyperledger Fabric ./byfn -m up not bringing up

Seems like you have not installed docker-compose. ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 1,207 views
0 votes
1 answer

Hyperledger Composer: Error: Error trying to start business network. Error: No valid responses from any peers.

You have to configure TLS in peers ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 2,288 views
0 votes
1 answer

Hyperledger Composer: Query using relation

 you need to refer to your specific ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 809 views
0 votes
1 answer

Hyperledger composer: network start gives no output

You are using -v as your option ...READ MORE

Nov 5, 2018 in Blockchain by Omkar
 • 69,210 points • 451 views
0 votes
1 answer

Can I execute distributions in ERC20 tokens on a later stage?

It is best to have a claim ...READ MORE

Nov 2, 2018 in Blockchain by Prerna
 • 1,960 points • 632 views
0 votes
1 answer

Ethereum Advance token sample

Using > instead of >= is a ...READ MORE

Nov 2, 2018 in Blockchain by Christine
 • 15,790 points • 469 views
0 votes
2 answers

Hyperledger-fabric : chaincode deploy connection error "addrConn.resetTransport failed to create client"

I have your problem too,  PLEASE HELP ...READ MORE

Feb 28, 2019 in Blockchain by Hyperledger hater
 • 1,890 views
0 votes
1 answer

Hyperledger Fabric: Not able to install docker

Clean up the invalid package repository: cd ../../etc/apt/sources.list.d sudo ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,210 points • 687 views
0 votes
1 answer

Hyperledger Fabric: Could not resolve all dependencies for configuration

First, build the chaincode using gradle build. You should ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,210 points • 1,325 views
0 votes
1 answer

HyperLedger Composer: Failed to load connector module “composer-connector-embedded” for connection profile “testprofile”

First, update your devDependencies in package.json "devDependencies": { ... "composer-admin": ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,210 points • 548 views
0 votes
1 answer

Hyperledger Composer Playground: error # Instance org.acme.securebox.Order#1234 missing required field customer

All you have to do is add ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,210 points • 862 views
0 votes
1 answer

Hyperledger Fabric: error on outputChannelCreateTx: Cannot define a new channel with no Application section

Try defining or referencing the application in ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,210 points • 1,296 views
0 votes
1 answer

Hyperledger: Not able to connect from docker container to validator. curl http://rest-api:8008/blocks

The REST API service is exposed on ...READ MORE

Nov 2, 2018 in Blockchain by Omkar
 • 69,210 points • 1,017 views
0 votes
1 answer

Hyperledger Fabric:Error while creating channel unknown consortium

Firstly, replace DocChain with DocChainConsortium. Then run: docker-compose -f docker-compose-cli.yaml down --volumes ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 1,670 views
0 votes
1 answer

Hyperledger Fabric: How to create wallet using program?

You can do this by passing some ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 1,963 views
0 votes
1 answer

Hyperledger Fabric: Error endorsing chaincode: rpc error

Run the following commands and try again: docker ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 1,636 views
0 votes
2 answers

Hyperledger: Cello Operator Dashboard stuck at loading

This may be due to some inconsistency ...READ MORE

Mar 12, 2019 in Blockchain by Pikvik
 • 867 views
0 votes
1 answer

Hyperledger Fabric: cannot run chaincode from github on Ubuntu terminal

Like the error says: *SimpleChaincode does not implement ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 694 views
0 votes
1 answer

Hyperledger Fabric: Error: Error getting (myc) orderer endpoint: Error endorsing GetConfigBlock

First of all please note, that during ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 1,305 views
0 votes
1 answer

Hyperledger Fabric: Cannot update chaincode

First, stop and delete all the containers: docker ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 1,215 views
0 votes
1 answer

Hyperledger Composer: not able to install Hyperledger composer-cli

Try setting the PATH like this, export PATH="/usr/local/share/npm/bin:$PATH" Now run the ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 1,327 views
0 votes
1 answer

Docker: How to connect Node.js in container to Hyperledger Fabric?

You need to map ~/.composer/cards of your Docker host ...READ MORE

Oct 31, 2018 in Blockchain by Omkar
 • 69,210 points • 954 views
0 votes
2 answers

Not able to POST chaincode to hyperledger-fabric using API

TypeError: Cannot read property 'curve' of undefined     at ...READ MORE

Jan 30, 2019 in Blockchain by SHRADDHA
 • 668 views
0 votes
1 answer

Hyperledger Fabric: build error "files are missing SPDX-License-Identifier headers"

Try this: make peer orderer peer-docker orderer-docker tools-docker ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 631 views
0 votes
1 answer

Hyperledger Fabric: How to retrieve success payload via nodejs client?

The channel.sendTransactionProposal generates a Resp ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 589 views
0 votes
1 answer

Hyperledger Fabric: can't load package: package github.com/hyperledger/fabric/core/chaincode/shim:

You can install various golang projects with ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 4,121 views
0 votes
1 answer

Hyperledger Fabric : How to initialise a 2D array in .cto file?

You could try something like this, with ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 564 views
0 votes
1 answer

Hyperledger fabric: Unable to query result

In Hyperledger Fabric v1.0.0 your chaincode should confirm ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 783 views
0 votes
1 answer

Hyperledger Fabric: orderer launching fails with error "panic: Error reading configuration:Unsupported Config Type"

The error says there's some problem finding ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 1,947 views
0 votes
1 answer

Hyperledger Composer: Failed to load connector module “composer-connector-undefined” for connection type “undefined”

Hey. First, make sure that you are extending ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 886 views
0 votes
1 answer

Angular: How to display ngModel Object In Html Template?

You can use pipe as json on html page like this: {{ ...READ MORE

Oct 30, 2018 in Blockchain by Omkar
 • 69,210 points • 2,572 views
0 votes
1 answer

How to issue regular payouts to multiple wallets?

The cheapest way to do this is ...READ MORE

Oct 30, 2018 in Blockchain by Christine
 • 15,790 points • 674 views
0 votes
1 answer

Unable to change a state variable in a contract

I am assuming that the issue is ...READ MORE

Oct 30, 2018 in Blockchain by Christine
 • 15,790 points • 394 views
0 votes
3 answers

Hyperledger fabric: Cant connect peer to channel

Open the hosts file: $ gedit /etc/hosts And add the IP ...READ MORE

May 8, 2019 in Blockchain by John
 • 4,026 views
0 votes
1 answer

HyperledgerFabric : *SampleChaincode does not implement shim.Chaincode error

The reason you are getting this error ...READ MORE

Oct 29, 2018 in Blockchain by Omkar
 • 69,210 points • 654 views
0 votes
1 answer

Hyperledger Composer: How to save deployments?

You are losing your deployments probably because ...READ MORE

Oct 29, 2018 in Blockchain by Omkar
 • 69,210 points • 702 views
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