decentralized-energy-fabric-on-IBP20 | IBM Blockchain Platform and deploy | Blockchain library
kandi X-RAY | decentralized-energy-fabric-on-IBP20 Summary
kandi X-RAY | decentralized-energy-fabric-on-IBP20 Summary
Hyperledger Fabric sample Decentralized Energy on IBM Blockchain Platform. This code pattern demonstrates setting up a network on the IBM Blockchain Platform and deploying the Decentralized smart contract on the network. Next, we generate client-side certificates so the developer can subsequently enroll an application identity and then submit transactions on the smart contract. The application is setup with a Node.js server using the Fabric Node SDK to process requests to the network. A key application of Blockchain being currently explored is a Decentralized Energy network. The idea stems from a neighborhood where certain Residents are producing energy through Solar panels or other means, and can sell excess energy to Residents needing energy. The transactions would be based on coins in each Resident's account. As per a pre-determined contract and rate, the coins would be debited from the consumer and credited to the producer, for a certain billing period. Each transaction would need to be atomic and added to a Blockchain ledger for trust and verification. The network can include Banks to transact coins for Fiat currency (USD). The network can have Utility Company who can buy or provide energy through the network. The network consists of Residents, Banks and Utility Companies. Residents can exchange coins for energy among each other. The application assumes a pre-paid system where transactions occur after the energy is consumed and the values are updated. The Resident can exchange coins for Fiat money (USD) with Banks on the network. The Residents can also transact coins for energy with a Utility company on the network. The code pattern demonstrates how a Node.js smart contract can be packaged using the IBM Blockchain Platform Extension for VS Code. Then, using the extension, you can set up a local instance of the Hyperledger Fabric network, on which you can install and instantiate the contract. Lastly, the application is setup with a Node.js server using the Fabric Node SDK to process transactions that communicate with the network.
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decentralized-energy-fabric-on-IBP20 Key Features
decentralized-energy-fabric-on-IBP20 Examples and Code Snippets
Community Discussions
Trending Discussions on Blockchain
QUESTION
I am new to blockchain app development, I saw a project where ganache accounts are imported into Metamask, then web3.js is used to access and print those accounts and balances on Frontend (user interface).
If web3.js can directly access ganache blockchain accounts and balances, why do we need Metamask in between?
...ANSWER
Answered 2022-Feb-08 at 09:11If web3.js can directly acccess ganache blockchain accounts and balances, why we need metamask in between?
In this case, you don't need MetaMask to sign the transaction, as the node (Ganache) holds your private key.
But in a public environment (testnets and mainnet), the node doesn't hold your private key, so you'd need to sign the transaction using MetaMask (or any other tool that holds the private key).
QUESTION
I tried https://docs.opensea.io/reference opensea.io docs to fetch data. However, I think there are 2 APIs.
...ANSWER
Answered 2021-Aug-04 at 15:03The assets
endpoint (docs) has the asset_contract_address
filter that allows you to filter by a contract address. Which will effectively allow you to paginate through all NFTs of the contract (that Opensea knows of).
Example:
QUESTION
I want to publish files on ipfs but it's showing me an error.
Here is my code...
...ANSWER
Answered 2021-Nov-11 at 04:27I am not familiar with ipfs but i checked the official docs and they have done the first line like this:
QUESTION
I have been trying to interact with a contract on the AVAX chain using web3js and it keeps throwing the error, "TypeError: Cannot read properties of undefined (reading 'send')". I cannot figure out why this is happening, as it should be a valid statement. If anyone can help that would be awesome.
...ANSWER
Answered 2022-Mar-19 at 17:10The ABI needs to contain just the function and event definitions that are stored in your result
property. Without the wrapper object containing status
and other properties.
So in your case
QUESTION
I've been using the testnet lately and I encounter issues: they reset it very often and the service is down for multiple hours and sometimes have bugs.
Should I use the devnet? From what I've understood it's more stable and they reset it less often?
I have a backend in js that uses the elrond-sdk-erdjs and I'm confused because there is no function that initializes the https://devnet-gateway.elrond.com only the testnet. Is there a reason?
...ANSWER
Answered 2021-Aug-24 at 12:56The testnet is pretty volatile and it is reset very often (maybe weekly), without any warnings. Elrond recommends developers to use the devnet, it is reset maybe once every 3-4 months, so it's more stable.
You can get the provider like this:
QUESTION
Hey guys I am trying to deploy my project on the rinkeby chain using infura, but I am getting a ValueError Here is my trackback:
...ANSWER
Answered 2021-Nov-28 at 10:14it appears your env variables are not set correctly, and it looks like in this case it's your WEB3_INFURA_PROJECT_ID.
You can fix it by setting the variable in your .env file and adding dotenv: .env to your brownie-config.yaml.
brownie-config.yaml:
dotenv: .env .env:
export WEB3_INFURA_PROJECT_ID=YOUR_PROJECT_ID_HERE Remember to save these files.
Additionally, you should be on at least brownie version v1.14.6. You can find out what version you're on with:
brownie --version
QUESTION
I am very new to blockchain programming and programming in general. I want to generate my SOL address using the mnemonic seed phrase with the derivation path "m/44'/501'/0'/0". I can't find a proper BIP44 module for python where you can specify the derivation path.
...ANSWER
Answered 2022-Feb-23 at 00:41After a long search through the internet, I have finally found a way of solving my problem that I want to share with you.
QUESTION
ANSWER
Answered 2021-Oct-18 at 02:20I had the same issue but then I installed with npm and it worked
QUESTION
enter image description hereI've installed latest version of visual studio with desktop development c++ workload but still they are asking for it when i try to install truffle. I entered command :npm install -g truffle and lot of messages appear after 2 to 3 minutes of some kind of installation process. they are asking for Latest version of Visual Studio with "Desktop development with c++ workload" whereas i just installed my Visual studio with the same requirements. node.js and ganache are already installed. Is there any other way to install truffle?
...ANSWER
Answered 2022-Feb-17 at 16:59If you are installing it using npm package manager. Downgrade your npm to 7.24.2 it worked for me I hope it will also work for you. Use the following command to downgrade npm
QUESTION
I'm trying to swap tokens on uniswap unsing hardhat's mainnet fork but I'm getting this error: Error: Transaction reverted without a reason string
. And I don't really know why.
Here is my swap function:
...ANSWER
Answered 2022-Feb-17 at 06:46Weth
is different from other token, you're not able to use swapTokensForTokens
. We must use the swapEthForTokens
function instead, and you have to declare the data option separately.
so in your case we need to do:
Solidity code:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install decentralized-energy-fabric-on-IBP20
Navigate to the Nodes tab in the left navigation and click Add Certificate Authority.
Click Create an IBM Cloud Certificate Authority and Next.
Give it a CA display name of Org1 CA and click Next.
Specify an CA Administrator Enroll ID of admin and CA Administrator Enroll Secret of adminpw, then click Next.
Review the summary and click Add Certificate Authority.
In the Nodes tab, select the Org1 CA once it is running (indicated by the green box in the tile).
Click Associate identity on the CA overview panel.
On the side panel, select Enroll ID.
Provide an Enroll ID of admin and an Enroll secret of adminpw. Use the default value of Org1 CA Identity for the Identity display name.
Click Associate identity to add the identity into your wallet and associate the admin identity with the Org1 CA.
Select the Org1 CA Certificate Authority and ensure the admin identity that was created for the CA is visible in the table.
We will register an admin for our organization "org1". Click on the Register User button. Give an Enroll ID of org1admin, and Enroll Secret of org1adminpw. Set the Type for this identity as client. We can specify to Use root affiliation or uncheck this field and select from any of the affiliated organizations from the drop-down list. We will leave the Maximum enrollments field blank. Click Next.
We will not be adding any attributes to this user. Click Register user.
We will repeat the process to create an identity of the peer. Click on the Register User button. Give an Enroll ID of peer1, and Enroll Secret of peer1pw. Set the Type for this identity as peer. We can specify to Use root affiliation or uncheck this field and select from any of the affiliated organizations from the drop-down list. Click Next.
We will not be adding any attributes to this user. Click Register user.
Navigate to the Organizations tab in the left navigation and click Create MSP definition.
Enter the MSP Display name as Org1MSP and an MSP ID of Org1MSP.
Under Root Certificate Authority details, specify the peer CA that we created Org1 CA as the root CA for the organization.
Give the Enroll ID and Enroll secret for your organization admin, org1admin and org1adminpw. Then, give the Identity name as Org1 Admin.
Click the Generate button to enroll this identity as the admin of your organization and export the identity to the wallet. Click Export to export the admin certificates to your file system. Finally click Create MSP definition.
Navigate to the Nodes tab in the left navigation and click Add peer.
Click Create an IBM Cloud peer and then click Next.
Give the Peer display name as Peer Org1 and click Next.
On the next screen, select Org1 CA as the Certificate Authority. Then, give the Peer enroll ID and Peer enroll secret for the peer identity that you created for your peer, that is, peer1, and peer1pw. Select the Organization MSP as Org1MSP, from the drop-down list. Leave the TLS CSR hostname blank. Click Next.
The next step is to Associate an identity with this peer to make it the admin of your peer. Select your peer admin identity Org1 Admin and click Next.
Review the summary and click Add peer.
Navigate to the Nodes tab in the left navigation and click Add Certificate Authority.
Click Create an IBM Cloud Certificate Authority and Next.
Give it a CA display name of Orderer CA and click Next.
Specify an CA Administrator Enroll ID of admin and CA Administrator Enroll Secret of adminpw, then click Next.
Review the summary and click Add Certificate Authority.
In the Nodes tab, select the Orderer CA once it is running (indicated by the green box in the tile).
Click Associate identity on the CA overview panel.
On the side panel, select Enroll ID.
Provide an Enroll ID of admin and an Enroll secret of adminpw. Use the default value of Orderer CA Identity for the Identity display name.
Click Associate identity to add the identity into your wallet and associate the admin identity with the Orderer CA.
Select the Orderer CA Certificate Authority and ensure the admin identity that was created for the CA is visible in the table.
We will register an admin for the "orderer" organization. Click on the Register User button. Give an Enroll ID of ordereradmin, and Enroll Secret of ordereradminpw. Set the Type for this identity as client. We can specify to Use root affiliation or uncheck this field and select from any of the affiliated organizations from the drop-down list. We will leave the Maximum enrollments field blank. Click Next.
We will not be adding any attributes to this user. Click Register user.
We will repeat the process to create an identity of the orderer. Click on the Register User button. Give an Enroll ID of orderer1, and Enroll Secret of orderer1pw. Set the Type for this identity as orderer. We can specify to Use root affiliation or uncheck this field and select from any of the affiliated organizations from the drop-down list. Click Next.
We will not be adding any attributes to this user. Click Register user.
Navigate to the Organizations tab in the left navigation and click Create MSP definition.
Enter the MSP Display name as OrdererMSP and an MSP ID of OrdererMSP.
Under Root Certificate Authority details, specify the peer CA that we created Orderer CA as the root CA for the organization.
Give the Enroll ID and Enroll secret for your organization admin, ordereradmin and ordereradminpw. Then, give the Identity name as Orderer Admin.
Click the Generate button to enroll this identity as the admin of your organization and export the identity to the wallet. Click Export to export the admin certificates to your file system. Finally click Create MSP definition.
Navigate to the Nodes tab in the left navigation and click Add ordering service.
Click Create an IBM Cloud Ordering service and then click Next.
Give the Ordering service display name as Orderer and click Next.
On the next screen, select Orderer CA as the Certificate Authority. Then, give the Ordering service enroll ID and Ordering service enroll secret for the peer identity that you created for your orderer, that is, orderer1, and orderer1pw. Select the Organization MSP as OrdererMSP, from the drop-down list. Leave the TLS CSR hostname blank. Click Next.
The next step is to Associate an identity with this peer to make it the admin of your peer. Select your peer admin identity Orderer Admin and click Next.
Review the summary and click Add ordering service.
Navigate to the Nodes tab, and click on the Orderer that we created.
Under Consortium Members, click Add organization.
From the drop-down list, select Org1MSP, as this is the MSP that represents the peer's organization "Org1".
Click Add organization.
Navigate to the Channels tab in the left navigation and click Create channel.
Give the Channel name as mychannel.
Select the orderer you created, Orderer from the Ordering service drop-down list.
Under Organizations, select Org1MSP (Org1MSP) from the drop-down list to add the organization "Org1" as a member of this channel. Click Add button. Set the permissions for this member as Operator.
Scroll down to the Channel creator organization section and select Org1MSP (Org1MSP) from the dropdown as the Channel creator MSP and select Org1 Admin from the dropdown under Identity.
Click Create channel.
Click Join channel to add a peer to the channel.
Select your Orderer as the Ordering service and click Next.
Enter the name of the Channel as mychannel and click Next.
Next we need to select which peers should be added to the channel. In our case, we just want to add the peer we created under "Org1". Select Peer Org1 .
Click Join channel.
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