hyperledger

I'm trying to configure a sawtooth network with at least 2 Validators and some Transaction Processors. I'm using Ubuntu 18.04 so only possible solution is using docker. I searched entire day for a working example and still no luck. There is an example on the official website here but not working. The docker images versions is 1.1 which is weird, because there is no such version on docker hub. Furthermore it requires an image (hyperledger/sawtooth-poet-engine) which does not exist anywhere. I know that the main validator should generate the keys and genesis block and the other validator[s]

I came across Hyperledger fabric client which has methods/functions to authenticate new members into blockchain network. But I am not sure how I can authenticate new users into a channel in blockchain network. Can i use channel configuration(configtx) in hyperledger fabric to invite/register new participants into a channel? Link to channel configuration : http://hyperledger-fabric.readthedocs.io/en/latest/configtx.html#channel-creation you can use fabric-ca. Fabric-ca provides several apis for user management. You may register, revoke, enroll, reenroll users by fabric-ca. And the documents for

I am following below link to setup my first network on Hyperledger Fabric http://hyperledger-fabric.readthedocs.io/en/latest/build_network.html Whatever steps are mentioned in this setup i am pretty much able to do all. The issue is than when I try to join other peers to the channel, using below instruction You can make other peers join the channel as necessary by making appropriate changes in the four environment variables. I export following variables export CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1

I can see there are 3 types of orderer. When I deploy a fabric-network up to 2 types are used. https://hub.docker.com/r/hyperledger/fabric-orderer/ https://hub.docker.com/r/hyperledger/fabric-kafka/ https://hub.docker.com/r/hyperledger/fabric-ca-orderer/ The order documentation describes usage https://github.com/hyperledger/fabric/blob/master/orderer/README.md but I do not expect to see fabric-orderer and fabric-kafka containers in a fabric network. What am I misunderstanding here? The architecture for Hyperledger Fabric allows for multiple types of ordering services. At the heart of the

I am creating a blockchain app in Hyperledger that performs a bidding process for a manufacturing company. The bidding process involves 4 suppliers (Supplier A to Supplier D). The one with the lowest bid wins. I am able to create the chaincode for this. However, since it is a blockchain, the suppliers can see each other's bid (e.g., by simply looking at the contents of the blocks). In addition, the non-winning suppliers will know who actually won the bidding process. I want to enforce the following privacy rules in the blockchain: a. the bid of a particular supplier should be viewable only by