Techniques are presented for causing, as a result of successfully verifying that a first set of constraints and a second set of constraints are satisfied, a second transaction to be recorded to a blockchain network. The method comprises receiving, at a node in a blockchain network, a first transaction that specifies at least: a first set of constraints on a second transaction, the first set of constraints including one or more constraints that cause the second transaction to contain a set of data from the blockchain network; and a second set of constraints on the second transaction, the second set of constraints including a constraint that the set of data includes a block that includes the first transaction, the block included in a blockchain associated with the blockchain network.