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Questions tagged [ibm-blockchain]

IBM Blockchain Platform provides a blockchain-as-a-service (BaaS) offering that allows blockchain components to be deployed in multiple cloud environments.

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249 questions
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ACL Implementation of Hyperledger fabric 1.2

As documented in the hyperledger document 1.2 am trying to implement Basic default ACL but no luck till now. Please find my configtx.yaml here .There are just 2 organization Org1 and Org2. Policies are configured accordingly (But Maybe am doing…
Pankaj Cheema
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Hyperledger fabric :Failed to join all peers to channel. cause:TypeError: client.getEventHubsForOrg is not a function

Error pageHi Guys I am facing following error "Failed to join all peers to channel. cause:TypeError: client.getEventHubsForOrg is not a function" while running node SDK setup any could help me I am running Balance transfer example Error screen shot
Vineet Mishra
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Cannot read property 'getModelManager' of undefined in hyperledger composer

When I am trying to upload the stored bna file from my local storage to composer playground, I see below error:- "cannot read property 'getModelManager' of undefined" Can someone tell me why I am seeing this error?
Sahil
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Hyperledger Fabric orderer Variable configuration

Can anyone tell me at the time of configuration of orderer what doesORDERER_GENERAL_TLS_ROOTCAS this variable should contain ? Thanks in advance .
Debut Infotech
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hyperledger-fabric v1.1.0: register user with attributes fails

At work we are using the ibm cloud blockchain 1.1.0 and it is required to create a user with attributes encoded in the certificate. Unfortunately trying to encode this fails with the following error. Error Code: 20 - Authorization failure …
Sven Woldt
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Hyperledger Fabric NodeJS Chaincode tutorials

does anyone know where I can find good tutorials about chaincode development in NodeJS?
Leonardo Carraro
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HyperLedger: Error when starting a Business Network

I'm following the Developer Tutorial (https://hyperledger.github.io/composer/latest/tutorials/developer-tutorial). When I try to start the Business using - composer network start --networkName tutorial-network --networkVersion 0.0.1 --networkAdmin…
ameyaraje
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Hyperledger Composer nodes

I am new to Hyperledger and would like to build a proof-of-concept using Hyperledger Composer. I know Composer is a toolset to build Blockchain-Applications, which can be deployed on Hyperledger Fabric. Still, I don't really understand the structure…
smjs3214
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hyperledger first-network sample BAD_REQUEST -- error authorizing update

I am following this link first-network to run hyperledger samples name first-network. I am using Ubuntu 18.04LTS ./byfn.sh -m generate got successfully executed. When I am trying to execute ./byfn.sh -m up I am getting error 2018-05-08 10:41:55.901…
Prakash P
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Multi Org Setup using HyperLedger Composer in multiple machines

I am working on setting up a Business Network for Multiple Organizations (two physical machines). I did the setup of a business network using Hyperledger Composer Playground and achieved querying, rest-server implementation etc. I have configured a…
csLijo
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can rest server be launched inside the hyperledger/composer-playground container?

Can rest server be launched inside the hyperledger/composer-playground container? Want to know ways to interface with business network inside the play ground I get following error when I try to install composer-rest-server Error: Can't find Python…
Bharath
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Hyperledger Fabric: Blockchain consistency checks

I have a few questions on internal consistency checks in HLF. Thanks in advance for any information. Which part of the HLF system keeps track of the consistency of the blockchain? If I were to open the HLF ledger file of a peer (on the docker…
SierraBravo
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How to show immutability attribute in hyperledger composer

How do I show the immutable nature of a record in ledger which is in Hyperledger composer. A chain of hashes? How can try to change a transaction in historian and check the immutability attribute of the project.If I cant , is there any other method…
Sai Prannav Krishna
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composer -v throws error after global installation of composer-cli

i am getting following error when i run composer -v after installing composer-cli globally npm i -g composer-cli :- /usr/local/lib/node_modules/composer-cli/node_modules/composer-common/lib/cardstore/businessnetworkcardstore.js:54 async…
Sriram J
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Hyperledger Fabric: Can a smart contract secretly add numbers and only share the sum?

Scenario: I have 4 nodes in which each node sends a number. Each number should not be visible to any node other than the owner. The smart contract should secretly add all 4 numbers without viewing them to any member. Only the result which is the…
Omar Kayali
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