ibm-blockchain

问题 I'm trying to build a Hyperledger Fabric network with the following Smartforce[Orderer Org] Falcon.io [ORG1] Frost.io [ORG2] I have generated all cryptographic materials using cryptogen tool. now looking to build gensis block using configtxgen tool. Here is configtx.yaml : Profiles: TwoOrgOrdererGenesis: Orderer: <<: *OrdererDefaults Organizations: - *Smartforce Consortiums: SampleConsortium: Organizations: - *BusinessPartner1 - *BusinessPartner2 TwoOrgChannel: Consortium: SampleConsortium

问题 I'm trying to build a Hyperledger Fabric network with the following Smartforce[Orderer Org] Falcon.io [ORG1] Frost.io [ORG2] I have generated all cryptographic materials using cryptogen tool. now looking to build gensis block using configtxgen tool. Here is configtx.yaml : Profiles: TwoOrgOrdererGenesis: Orderer: <<: *OrdererDefaults Organizations: - *Smartforce Consortiums: SampleConsortium: Organizations: - *BusinessPartner1 - *BusinessPartner2 TwoOrgChannel: Consortium: SampleConsortium

问题 npm start > server@1.0.0 start C:\Users\07\OneDrive\Desktop\Final Try\fabcar-blockchain-sample\web-app\server > ./node_modules/nodemon/bin/nodemon.js src/app.js '.' is not recognized as an internal or external command, operable program or batch file. npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! server@1.0.0 start: `./node_modules/nodemon/bin/nodemon.js src/app.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the server@1.0.0 start script. npm ERR! This is probably not a problem

问题 I am trying to build a Block chain application for distributed image sharing and copyright protection. I am using image as an asset. So now I want to upload an image on Hyper ledger Composer playground. How can I do that? 回答1: You can store your file data into the IPFS. IPFS is a protocol and network designed to create a content-addressable, peer-to-peer method of storing and sharing hypermedia in a distributed file system. For IPFS I recommend you to follow the link In your application, In

问题 I am trying to build a Block chain application for distributed image sharing and copyright protection. I am using image as an asset. So now I want to upload an image on Hyper ledger Composer playground. How can I do that? 回答1: You can store your file data into the IPFS. IPFS is a protocol and network designed to create a content-addressable, peer-to-peer method of storing and sharing hypermedia in a distributed file system. For IPFS I recommend you to follow the link In your application, In

问题 I am trying to build a Block chain application for distributed image sharing and copyright protection. I am using image as an asset. So now I want to upload an image on Hyper ledger Composer playground. How can I do that? 回答1: You can store your file data into the IPFS. IPFS is a protocol and network designed to create a content-addressable, peer-to-peer method of storing and sharing hypermedia in a distributed file system. For IPFS I recommend you to follow the link In your application, In

问题 Is it possible to have a cross-ledger identity management between hyperledger fabric and indy? Is it possible to communicate between Hyperledger Fabric and Hyperledger Indy? Can I read the data from Fabric and store it in Indy and vice-versa? My idea is to use Indy to authenticate identities and use Fabric to store data through chaincodes using the communicated credentials. Is Quilt the tool for it? 回答1: Hyperledger Indy is a decentralised identity system, while Hyperledger Fabric is a

问题 Is it possible to have a cross-ledger identity management between hyperledger fabric and indy? Is it possible to communicate between Hyperledger Fabric and Hyperledger Indy? Can I read the data from Fabric and store it in Indy and vice-versa? My idea is to use Indy to authenticate identities and use Fabric to store data through chaincodes using the communicated credentials. Is Quilt the tool for it? 回答1: Hyperledger Indy is a decentralised identity system, while Hyperledger Fabric is a

问题 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 front-end or user application using this subscribed event which was emitted by the blockchain end. Kindly help. 回答1: You can use WebSocket to get events occurs on URL by using WebSocket in JS. class Events { constructor() { // Listen for events this

问题 I'm working on the hyperledger blockchain on Ubuntu 18-04 LTS via this tuto hyperledger.github.io/composer/latest/tutorials/developer-tutorial . I have installed all the pre-requisites and in this step of running "composer network install", I faced this issue and tried some solutions but still not working. Any help please ? Thanks ! ~/tutorial-network$ composer network install --card PeerAdmin@hlfv1 --archiveFile tutorial-network@0.0.1.bna ✖ Installing business network. This may take a minute