Suppose I have generated a valid ethereum address, there are a no of ways of doing so including using Blockcypher's Generate Address API, using light-wallet etc. So I got a valid address, Now are these addresses published on blockchain? I mean any valid address is liable to receive payments ? Or anything else like private-public key pair or anything as such is needed (I am not good at this topic) ?
If nothing else is needed and we are ready to receive a payment as soon as a valid address is generated, I have another doubt (This part is probably specific to Light Wallet).
I was following webawllet example of lightwallet. It generates a new address by clicking the
show button. So I get only a valid address as output (no private key,publick key, nothing else) and I have send some ethers to it. Will it receive the ethers? How can I claim these ethers ?