  We show how branching spin chains can be used to both generate and distribute
entanglement from their natural dynamics. Such entanglement provides a useful
resource, for example for teleportation or distributed quantum processing. Once
distributed, this resource can be isolated through mapping or swapping the
entanglement into specific qubits at the ends of branches. Alternatively, as we
demonstrate for distributed bipartite entanglement, applying simple
single-qubit operations to the end spin of one or more branches can dynamically
freeze the entanglement at the branch ends.
