If a transaction sits a long time in the tezos mempool for a reason or another does it get eventually cleaned-up or will it stay there forever ?

2 Answers 2


In the current protocol there's a time to live of 60 blocks for every manager operation, after which they can no longer be included.


NB: After the adoption of the Granada protocol, which halves the minimal time between blocks, the max_operation_ttl constant was doubled from 60 to 120 blocks, to roughly preserve the length of the live blocks and operations window when measured in wall-clock time.

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