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Basic Sample Business Network - SampleAsset
How to add new SampleAsset records in Basic Sample Business Network? You can follow this tutorial to add new SampleAsset records in Basic Sample Business Network. 1. Open Hyperledger Composer Playground and go to Basic Sample Business Network home page, as shown in the previous tutorial. 2. Click "T...
2020-12-22, 902🔥, 0💬

Setting Up Ledger Peer Manually
Where to find tutorials on Setting Up Ledger Peer Manually? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Setting Up Ledger Peer Manually. Steps of Setting Up Ledger Peer Pull Hyperledger Fabric Peer Image Deploy Peer with Default Configurati...
2019-05-14, 902🔥, 0💬

Enroll Fabric CA Client Admin Identity
How to Enroll Fabric CA Client Admin Identity? In order to use Fabric CA Client tool, you must enroll the server admin identity first. 1. Make sure Fabric CA Server is running at port 7054. 2. Set up FABRIC_CA_CLIENT_HOME environment variable to avoid using the default of $HOME/.fabric-ca-client $ m...
2019-09-27, 901🔥, 0💬

"crypto-config.yaml" Environment Configuration File
What is the "crypto-config.yaml" Environment Configuration File? "crypto-config.yaml" is a Configuration File used to control the Hyplerledger Composer development environment. It is located in the "composer" sub-directory: $ cd fabric-dev-servers/fabric-scri pts/hlfv12/composer$ ls -l -rw-r--r-- 1 ...
2020-07-22, 900🔥, 0💬

"composer network" Commands
What can I do with "composer network" command? "composer network" commands are part of the Composer CLI command set. It allows you to manage business networks running in the Hyperledger Composer developer environment. Here is the syntax of the "composer network" commands: $ composer network help Com...
2020-12-26, 897🔥, 0💬

Join Peer to BYFN Network Channel
How to join the default peer to a BYFN network Channel? You can follow this tutorial to join the default peer to a BYFN network Channel. In last tutorial, we have created a transaction file, channel.tx, that contains a transaction message to create a channel called "mychannel" on the BYFN network. N...
2020-09-30, 897🔥, 0💬

Hyperledger Composer Script File
What Is Hyperledger Composer Script File (*.js)? A Hyperledger Composer script file is a source code file that define business logics on how each transaction is processed. A script file uses the JavaScript language and the .js file extension. Here is an example of a script file from the Basic Sample...
2020-11-22, 895🔥, 0💬

CTO Language Statements
What are Business Network Model CTO Language Statements? Business Network Model CTO language supports 8 types of statements. namespace - The "namespace" statement declares a namespace as the prefix for all data types defined in this CTO file. The "namespace" statement has the same syntax as the "nam...
2021-08-04, 894🔥, 1💬

"fabric-ca-client certificate list" - List Certificates
How to List Certificates with the "fabric-ca-client certificate list" command? If you want get a list of certificates from the Fabric CA Server, you can run the "fabric-ca-client certificate list" command: $ export FABRIC_CA_CLIENT_HOME=~/fabric -ca/native-client/admin$ ~/go/bin/fabric-ca-client cer...
2019-09-27, 894🔥, 0💬

Turn on Ledger Peer Operation RESTful API
How to Turn on Ledger Peer Operation RESTful API? You can follow this tutorial to Turn on Ledger Peer Operation RESTful API. 1. Update Docker Compose YAML file, docker-compose-peer.yaml to override the "operations" settings: $ cd fabric-peer $ vi docker-compose-peer.yaml # Copyright (c) FYIcenter.co...
2019-02-09, 892🔥, 0💬

What Is Blockchain
What Is Blockchain? A blockchain is a growing list of data blocks that are cryptographically chained together. A blockchain has the following main features: A data block has a header and a list of data transactions. Merkle hash tree is used to store a fingerprint of all transactions in the block hea...
2022-03-29, 889🔥, 0💬

Start/Stop Hyperledger Fabric Dev Environment
How to start and stop Hyplerledger Fabric Dev Environment? You can follow this tutorial to start and stop Hyplerledger Fabric on Ubuntu. 1. Make sure the Docker Engine is running: $ ps -e | grep dockerd 17939 ? 00:39:58 dockerd $ docker info Containers: 6 Running: 4 Paused: 0 Stopped: 2 Images: 88 S...
2021-04-04, 888🔥, 0💬

Build the BYFN Network Manually
How to build the BYFN (Build Your First Network) manually? You build the BYFN network automatically with the "./byfn.sh up" script command. But if you want to learn how to build it manually, you need to complete the following steps: 1. Review and revise crypto-config.yaml configuration file, which c...
2020-10-26, 887🔥, 0💬

Hyperledger Composer Environment Channels
What Channels are included in my Hyperledger Composer Environment? In the fabric-dev-servers.tar.gz package, only one channel, "composerchannel", is created in the Hyperledger Composer Developer Environment. The peer node peer0.org1.example.com has been configured to this channel. You can only deplo...
2020-07-14, 887🔥, 0💬

BYFN CLI Container Missing Admin Certificates
How to fix the ".../org1.example.com/users/Ad min@org1.example.com/mspdoes not exist" when running the BYFN CLI "peer" command? When you build your BYFN network manually, you may end up missing admin user certificate on the CLI Docker container. 1. Check the certificate directory for the org1.exampl...
2020-10-10, 885🔥, 0💬

Incompatible Chaincode on BYFN Peers
How to list installed and instantiated chaincodes on BYFN Peers? You can follow this tutorial to list and review installed and instantiated chaincodes on peer nodes of your BYFN network. 1. Connect to the BYFN CLI container and check the default peer: $ docker exec -it cli bash bash-4.4# echo $CORE_...
2020-09-15, 881🔥, 0💬

Container Network - "net_basic"
What is the Container Network - "net_basic"? "net_basic" is a Docker container network consists of all containers related to Hyperledger Fabric network, basic-network. A container network groups containers together to help network communications among those containers. You can verify the "net_basic"...
2020-04-14, 880🔥, 0💬

Start CLI Container for DigiBank Admin
How to Start CLI Container for the DigiBank Administrator? If you are the administrator from DigiBank and want to manage the PaperNet Hyperledger Fabric network, you can follow this tutorial. 1. Create a new terminal window and run the docker-compose command to start the CLI container: (digibank adm...
2019-11-21, 879🔥, 0💬

BYFN configtx.yaml Configuration File
What is the configtx.yaml Configuration File used in BYFN (Build Your First Network)? The configtx.yaml Configuration File provides settings on how the BYFN network should be created. Here is the default copy of crypto-config.yaml provided in BYFN: # Copyright IBM Corp. All Rights Reserved. --- ####...
2020-10-26, 872🔥, 0💬

"gyp ERR! stack Error: EACCES: permission denied"
Why am I getting the "gyp ERR! stack Error: EACCES: permission denied" error when installing Hyplerledger Composer REST API Server? You may get the "gyp ERR! stack Error: EACCES: permission denied" error, when using older version of "npm" to install Hyplerledger Composer REST API server: $ sudo npm ...
2021-02-17, 871🔥, 0💬

Download Blocks from Blockchain
How to download blocks from the blockchain on the peer? You can follow this tutorial to download blocks from the blockchain on the peer. 1. Connect to the peer container and setup membership variables: $ docker exec -it peer0.org1.example.com bash root@aedfd08717a5:/opt/gopath/ src/github.com/hyperle...
2020-03-25, 870🔥, 0💬

Create Network Business Card in Playground
How to Create new Network Business Cards in Playground? You can follow this tutorial to Create new Network Business Cards in Playground. 1. Enter the following address in your browser. You see the Playground home page. http://localhost:8080 2. Click "Create Business Network Card". You the "Create A ...
2020-12-02, 869🔥, 0💬

Deploy cli Container Manually
How to Deploy cli as a Docker container manually? You can follow this tutorial to Deploy cli as a Docker container manually. 1. Verify the configuration of the cli container defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-network$ more docker-compose.yml ......
2020-03-15, 865🔥, 0💬

Download Business Network from Playground
How to download Business Network from Hyperledger Composer Playground? You can follow this tutorial to download a Business Network from Hyperledger Composer Playground and save it to your local computer. 1. Open Hyperledger Composer Playground and go to Basic Sample Business Network home page, as sh...
2020-12-15, 862🔥, 0💬

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