Is it safe to show my wallet address to a third party?
A wallet address can, in a way, be compared to a bank account number. This means that if someone has your wallet address, this person can transfer digital currency to your address. One difference however between bank payments and cryptocurrency transfer, is that all cryptocurrency transfers are visible on the blockchain. If someone is aware of your wallet address, they can see how much money went in and out your wallet, and how much it contains at the moment.
Nobody is able to claim your assets by knowing your wallet address.