Final answer:
The court-ordered lien for defaulting on child support is known as a judgment lien, which is different from the crop lien system as it is attached to the debtor's property by court ruling.
Step-by-step explanation:
A court-ordered lien against all real or personal property of a parent who defaults on child support is an example of a judgment lien. While the crop lien system was a form of credit using future crops as collateral, a judgment lien results from a court ruling and attaches to the debtor's property as a way to ensure payment of a debt, in this case, unpaid child support. Unlike with crop liens, the property subject to a judgment lien is not necessarily tied to the debt's origin.