Quote from: Nelly.G0211 on June 20, 2018, 07:55:23 PM

hypothetically, it is possible. But the main point of a blockchain is its decentralization, that makes a blockchain invulnerable to the threats of break downs.

Quote from: tensports on June 20, 2018, 08:02:20 PM

blockchain is decentralized and no one has control over it so it cannot be destroy,i think its only possible if internet permanently shut down

This only applies to blockchains based on proof-of-work (where nodes follow the valid chain with most cumulative work).

Blockchains based on proof-of-stake can always be destroyed if 51% of validators agree to wipe out all ledger history. POS protocols can include centralized checkpoints as a protection from this constant threat, but that thwarts the very idea of decentralized consensus...