
A hard fork is a change to the bitcoin protocol that loosens the ruleset enforced by full nodes that upgrade to enforce the hard fork rules. A block that is considered invalid before the hard fork activates will be considered valid by upgra…
A soft fork is a change to the bitcoin protocol that restricts the ruleset enforced by full nodes that upgrade to enforce the soft fork rules. A block that is considered valid before the soft fork activates will be considered invalid by upgra…