US Patent 10387684 Interlocked blockchains to increase blockchain security

Systems and methods for preventing vulnerabilities in a blockchain due to quiescence are disclosed including submitting a first crosslink transaction for addition to a first blockchain that includes cross-referencing information for a second crosslink transaction that corresponds to the first crosslink transaction and submitting the second crosslink transaction for addition to a second blockchain that includes cross-referencing information corresponding to the first crosslink transaction. The first and second crosslink transactions are configured to be usable together by a user of at least one of the first and second blockchains to validate at least a portion of one of the first and second blockchains after a period of quiescence in the one of the first and second blockchains.