Hey @serejke glad to see you here! 
The current block explorer only looks for two things: transaction Ids and account addresses. It doesn’t bother with contracts or block hashes. Apologies with the confusion but we are currently working on a new implementation of the block explorer.
Using the graphql playground I can see that your contract does exist on the beta-4 blockchain.
query {
contract(id: "0x9083a6b74bfc94fc0c3ac711a8bc9e0237d0af431a7af06af0a8106ec89d35ea") {
id
bytecode
salt
}
}