IBM Blockchain Platform provides a blockchain-as-a-service (BaaS) offering that allows blockchain components to be deployed in multiple cloud environments.
Questions tagged [ibm-blockchain]
249 questions
0
votes
2 answers
While working with hyperledger fabric, "./createPeerAdminCard.sh" command not working. Composer version issue prompts up
While using the command - "./createPeerAdminCard.sh" , the following message is shown.
Development only script for Hyperledger Fabric control
Running 'createPeerAdminCard.sh'
FABRIC_VERSION is unset, assuming hlfv12
FABRIC_START_TIMEOUT is unset,…
Sudhanshu Joshi
- 102
- 6
0
votes
2 answers
Why we need to use Solo in Development and Kafka in Production in Hyperledger Fabric?
Please explain the difference between the Solo and Kafka.
1)Why we need to use Solo in Development and Kafka in Production on Hyperledger Fabric?
2)Can we use only Kafka for both Development and Production?
3)How the Consensus mechanism exactly…
Mahesh Bejawada
- 25
- 3
0
votes
1 answer
How can we define the roles in the hyperleedger fabric?
For example, If my network running on multiple machines and there are 2 organizations and one orderer int the network. How can I define the roles of both organizations and their peers. One organizations have multiple peers. How the ledger will…
Hasnat Ahmed
- 15
- 6
0
votes
1 answer
How to read data from the block chain
I am new to implementing the blockchain locally. Suppose I have a blockchain,
How to retrieve the data that is being chained in the blockchain.
Is it that only the transaction IDs are saved in the blockchain like the hashes or the actual data…
Sai Chand Akella
- 11
- 4
0
votes
1 answer
How to implement Hyperledger composer rest api by own with nodejs?
I am developing application using hyperledger composer.My role is as a developer and I am working on chan code as well as rest api.
As framework provides rest server with automatically gnerated API.
Is it possible to develop api in nodejs by own?
My…
Yogesh Jangir
- 37
- 9
0
votes
1 answer
Hyperledger Fabric Chaincode Error : cannot refer to unexported name shim.success
I am trying to build chaincode using hyperledger. I am using GoLang to write the contract, while building the contract i am facing the below error :
cannot refer to unexported name shim.success
undefined: shim.success
There may be few…
Priyanka
- 117
- 1
- 5
- 19
0
votes
1 answer
Hyperledger Sawtooth Marketplace Rest API 404 error
I am trying to build & test the following program on a clean install of Ubuntu v18:
https://github.com/hyperledger/sawtooth-marketplace
After installing, I get a 404 "resource not found" error when I try to navigate to the "Marketplace-Rest-API"…
LegoEngineering
- 1
- 1
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votes
0 answers
migrate orderer on different server ( IBM-Hyperledger fabric 1.1)
Is it possible to migrate orderer on different server, once we have setup the Blockchain Network. Currently Single Server is having 2 Organization with 1 peer each and solo orderer on same server(Similar to default byfn setup). Now I wanted to move…
Anurag
- 33
- 4
0
votes
1 answer
Blockchain as a database for training certifications
I work in a company where in order to send staff to the field, employees have to comply with a certification that expires each 4 years, which probably employees did in their previous job, but the previous job just provided a letter that could be…
panchicore
- 11,451
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- 100
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votes
1 answer
How to get notifications in user applications?
In blockchain I have emitted an event which is linked with a particular transaction. I have also subscribed the event in my transaction API. But what do I do after I subscribe the event in the API? I do not know how to generate notifications in my…
Lalith
- 3
- 1
0
votes
2 answers
User does not have attribute 'hf.AffiliationMgr'
I am trying to run the following command against a hyperledger 1.0 instance:
fabric-ca-client affiliation list --caname PeerOrg1CA
the response I get is:
Error: Response from server: Error Code: 0 - User does not have attribute…
P Sacchitella
- 3
- 2
0
votes
1 answer
How do I send BOTH a file and form data using requests in python?
I'm making the following call using the python requests library:
response = requests.post(
'https://blockchain-starter.eu-gb.bluemix.net/api/v1/networks//chaincode/install',
headers={
'accept': 'application/json',
…
MysteriousWaffle
- 439
- 1
- 5
- 16
0
votes
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In Hyperledger Fabric, can I determine the Asset Class in the transaction?
quick question regarding hyperledger fabric transactions in JS.
Say, I have an abstract asset called HotBeverage:
abstract asset HotBeverage identified by assetId {
o String assetId
o Double price
}
And from that abstract class, I create two…
mick.lynch
- 21
- 6
0
votes
2 answers
Version error when launching hyperledger composer rest server docker
A little background: I have a business network running on IBM cloud hyperledger starter edition. It's built with composer v0.19.14, and as far as I can tell, everything is v0.19.14 and should work with Fabric v1.1. I can deploy my BNA and view with…
Adam Siena
- 1
- 3
0
votes
1 answer
Error: Error trying to ping. Error: Composer runtime (0.19.4) is not compatible with client (0.20.0)
I'm simply trying to start a local composer server at my machine but I'm facing the following error :
Error: Error trying to ping. Error: Composer runtime (0.19.4) is not compatible with client (0.20.0)
However, my composer version looks perfectly…
Paris Mollo
- 23
- 1
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