It's known that even if no transactions get created, bitcoin still creates a block with empty array of transactions.

In this way, I am curious what the merkle root would be. How does bitcoin figure out merkle root for empty array ? if there're even 1 transaction in it, I understand completely what it does, but what about empty array ?

1 Answer 1


This cannot happen. Every block contains at least a "coinbase" transaction that distributes the subsidy and fees to the block's miners.

Blocks without coinbase are invalid, even if the subsidy were 0.

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