The paper propounds that quantumizing the unabridged blockchain could address the problem of prevailing crisis to the security of blockchain encryption. While quantum cryptography has been suggested as a workaround for this problem before, the proposed design by Rajan and Visser is novel. They argue that the solution lies in developing a blockchain that rests on quantum particles entangled in time, rather than space. Based on the new structure, any attempt to hack or distort the blockchain would result in the link being destroyed, as entanglement is heavily critical. In their paper, Rajan and Visser explain that by encoding transactions on a quantum particle (or photon), it would be possible to entangle the past information, allowing the chronologically older blocks to vanish once they have been absorbed into the more fresh addition.
Their might be a proper chance of quantum networked time machine effect in future based on the current research arena of quantum entanglement in blockchain.