Who can be a witness on a bill of sale?

A witness on a bill of sale can be any adult who is not a party to the transaction and is capable of understanding the act of witnessing. Typically, witnesses can include friends, family members, or neutral third parties. Their role is to verify that the parties involved in the sale have signed the document willingly and that the transaction took place. Some jurisdictions may have specific requirements regarding who can serve as a witness, so it's important to check local laws.