title: Hyperledger Composer Channels concepts
body: <p>I have been building an application in hyperledger composer.
  All the tutorials I find related to hyperledger fabrics talks a lot about Orderers, Channels, Peers, Ledger etc. But none of the hyperledger composer tutorial relates the concepts of Asset, transaction or Participants to those.</p>
  
  <p>For instance, hyperledger composer supports only a single channel, then how is the privacy of a transaction maintained there? Is it through the permission.acl file? </p>
  
  <p>Also relating to the famous Vehicle lifecycle network. </p>
  
  <ol>
  <li><p>Will each of those manufacturer be an organization(having several peers within it) in a blockchain network?</p></li>
  <li><p>Do all the manufactures needs to host a peer(containing both the ledger and chaincode)? </p></li>
  <li><p>Does the regulator body also need a peer?</p></li>
  </ol>
  
  <p>Please help me understanding it clearly.</p>