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Member Peers of a Channel
How to find out which Peers are members of the "mychannel" channel? One way to find out which Peers are members of the "mychannel" channel is to visit each peers and check their joined channel list: 1. Connect to the CLI container: $ docker exec -it cli bash bash-4.4# 2. Check joined channel list on...
2020-05-29, ∼1854🔥, 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, ∼1850🔥, 0💬

Interfaces to Communicate with Ledger Peer
Where to find tutorials on Interfaces to Communicate with Ledger Peer? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Interfaces to Communicate with Ledger Peer. Main Interfaces to Communicate with Ledger Peer Download and Install Golang SDK D...
2020-01-29, ∼1850🔥, 0💬

Switch Default Peer on BYFN CLI Container
How to switch the default peer on BYFN CLI Container? I want to join peer0.org2.example.com to the channel. You can follow this tutorial to switch the default peer to peer0.org2.example.com and join it to BYFN "mychannel" channel. 1. Switch the default peer by changing environment variables: bash-4....
2020-09-30, ∼1848🔥, 0💬

View Logs Files of basic-network
How to view logs files of the example network, basic-network? The example network, basic-network, consists of 4 Docker containers. You can view the log file on each container. 1. View log file of the orderer container: $ docker logs orderer.example.com [orderer.common.server] prettyPrintStruct -&...
2020-04-14, ∼1848🔥, 0💬

Hyperledger Related Terminology
Hyperledger Related Terminology: Asset - An Asset is a data object with a unique identifier. The content of an asset can be anything from a simple numeric value to a complex data object. For example, an asset can represent a financial asset, like a bank account in a bank system. Blockchain - A Block...
2020-01-21, ∼1848🔥, 0💬

Fabric CA Client Wallet
Where is the Fabric CA Client Wallet that stores identities and certificates used to access the Fabric CA Server? The Fabric CA Client Wallet is stored in the "msp" sub-directory in the $FABRIC_CA_CLIENT_HOME directory or the default location of $HOME/.fabric-ca-client. The Fabric CA Client Wallet h...
2019-09-27, ∼1846🔥, 0💬

"docker-compose" - Deploy Orderer to Docker
How to deploy Orderer peer to Docker using the "docker-compose" command? You can follow this tutorial to deploy Orderer peer to Docker using the "docker-compose" command. 1. Verify required files for the Orderer peer: $ cd fabric-orderer $ ls -l -rw-rw-r-- 1 fyicenter 935 Apr 1 02:23 docker-compose-...
2019-08-23, ∼1840🔥, 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, ∼1836🔥, 0💬

Install Composer Prerequisites on Ubuntu
How to install Hyplerledger Composer Prerequisites on Ubuntu? The best way to install Hyplerledger Composer Prerequisites on Ubuntu is to download and run the prereqs-ubuntu.sh script. 1. Verify your Ubuntu version: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: U...
2021-05-04, ∼1829🔥, 0💬

Deploy ca.example.com Manually
How to Deploy ca.example.com as a Docker container manually? You can follow this tutorial to Deploy ca.example.com as a Docker container manually. 1. Verify the configuration of the ca.example.com container defined in the docker-compose.yml file: $ cd ~/hyperledger-binaries/fabric- samples/basic-netw...
2020-03-25, ∼1829🔥, 0💬

CTO Language Primitive Data Types
What are CTO Language Primitive Data Types? CTO Language Primitive Data Types built-in system data types that you can use them to build new data types Currently, there are 6 primitive data types supported: String - Represets a string of Unicode characters. Double - Represets a double precision (64-b...
2021-06-19, ∼1816🔥, 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, ∼1816🔥, 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, ∼1814🔥, 0💬

Peer and CouchDB Container Dependency
Which Peer container depends which CouchDB container in BYFN network? If you are running BYFN (Build Your First Network) with the CouchDB option, the Peer and CouchDB Container Dependency is defined in the "docker-compose-couch.yaml" file. $ cd ~/hyperledger-binaries/fabric- samples/first-network$ m...
2020-07-03, ∼1813🔥, 1💬

Basic Sample Business Network - SampleEvent
How to view SampleEvent emitted from Basic Sample Business Network? You can follow this tutorial to view SampleEvent emitted from Basic Sample Business Network. Since SampleEvent is generated by the SampleTransaction process, it is recorded as a child object to the SampleTransaction record. 1. Open ...
2020-12-15, ∼1812🔥, 0💬

Instantiate PaperNet Chaincode (Smart Contract)
How to Instantiate the PaperNet Chaincode (Smart Contract), papercontract.js? Now that papercontract chaincode containing the CommercialPaper chaincode is installed on the required PaperNet peers, you, as administrator, can make it available to different network channels, so that it can be invoked b...
2019-12-02, ∼1810🔥, 0💬

"docker start/stop" - Start and Stop Docker Containers
How to run "docker start/stop" - Start and Stop Docker Containers for BYFN (Build Your First Network)? If you have your BYFN Docker containers deployed to the Docker Engine, you can use the "docker start/stop" command to manage them. 1. Look at the status of all deployed Docker containers: $ docker ...
2020-10-10, ∼1808🔥, 0💬

Invoke Chaincode Transaction on BYFN Channel
How to Invoke Chaincode Transaction on BYFN Channel? An instance of a chaincode can be viewed as an object of a class in an execution environment. It can hold transaction operations to manage its properties. You can run the "peer chaincode invoke" command to invoke the "Invoke" operation of a given ...
2020-09-30, ∼1808🔥, 0💬

"peer chaincode invoke" on BYFN
How to run "peer chaincode invoke" to invoke the transaction on the chaincode instance? After a chaincode in properly installed on all peers and instantiated on the channel, you can run the "peer chaincode invoke" to invoke the transaction on the chaincode instance. 1. Verify instantiated chaincode:...
2020-08-13, ∼1807🔥, 0💬

Upgrade Chaincode Instance on BYFN
How to upgrade chaincode instance on BYFN? You can follow this tutorial to upgrade the chaincode instance on BYFN. You can use this process to fix any issues with chaincode instance without destroy its data. 1. Install new version, 2.0, of the chaincode on the default peer, peer0.org1. bash-4.4# ech...
2020-09-12, ∼1804🔥, 1💬

"enum" CTO Statement Syntax
What is the syntax of the "enum" CTO Statement The "enum" statement declares an enumeration data type to represent data values with predefined options. Here is the syntax of an "enum" statement: enum type_name [extends super_type] { o value_option ... } Syntax elements used in a "transaction" CTO St...
2021-06-19, ∼1801🔥, 0💬

BYFN Chaincode Docker Container
What is the BYFN chaincode Docker container? The BYFN chaincode Docker container represents the running instance of the "mycc" chaincode. When "mycc" chaincode is instantiated from peer0.org1, a chaincode Docker container (shim) is deployed and started on the Docker engine. You can find chaincode co...
2020-09-15, ∼1799🔥, 0💬

"transaction" CTO Statement Syntax
What is the syntax of the "transaction" CTO Statement The "transaction" statement declares the input message structure of a transaction type, which can be submitted to the business network for processing. Here is the syntax of an "transaction" statement: transaction type_name [extends super_type] { ...
2021-08-01, ∼1795🔥, 0💬

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