Stale Block

      A Stale block is a block that has been removed from the sequence of a blockchain because they were either invalid, late, or produced by accident.

     Whenever a new block is created for a blockchain, it must be propagated to all node on a network.  Propagation takes time (say 10 seconds). If while one block is being propogated another one is found by another miner, then the blockchain registers its creation. However, once the first block reaches everybody else and is accepted by the consensus, then the late block becomes unrecognized and floats in digital hyperspace forever.

     Stale blocks appear in a blockchain’s history, so they unfortunately will demand storage space in full nodes.

      Related Terms:



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