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flack 2017-10-05 23:43:18 +02:00 committed by GitHub
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@ -83,7 +83,7 @@ Why are block heights required to be absolute, rather than relative?
Why are blocks older than 52596 deep in the chain not verified?
* This is to avoid creating an infinite storage requirement from all full nodes which would be necessary to maintain all the block headers indefinitely. 52596 block headers requires a fixed size of approximately 4 MB.
* In any case where you might want to specify a deeper block, you can also just as well specify a more recent one that decends from it.
* In any case where you might want to specify a deeper block, you can also just as well specify a more recent one that descends from it.
* It is assumed that 1 year is sufficient time to double-spend any common UTXOs on all blockchains of interest.
* If a deeper check is needed, it can be softforked in. Making the check more shallow, on the other hand, is a hardfork.