Revert MedianTimePast / mempool-only BIP113#6928
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laanwj merged 2 commits intobitcoin:masterfrom Nov 2, 2015
gmaxwell:undo_113
Merged
Revert MedianTimePast / mempool-only BIP113#6928laanwj merged 2 commits intobitcoin:masterfrom gmaxwell:undo_113
laanwj merged 2 commits intobitcoin:masterfrom
gmaxwell:undo_113
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… lock-time constraints" This reverts commit dea8d21.
… endpoint for lock-time calculations" This reverts commit 9d55050. As noted by Luke-Jr, under some conditions this will accept transactions which are invalid by the network rules. This happens when the current block time is head of the median time past and a transaction's locktime is in the middle. This could be addressed by changing the rule to MAX(this_block_time, MTP+offset) but this solution and the particular offset used deserve some consideration.
Member
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ACK |
Member
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Ugh. |
Member
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utACK |
Contributor
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So since the logic to revert in the first place was incorrect, any chance we can revert the reversion? |
Member
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We should, but I'm still recovering from panic here. |
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As observed by Luke-Jr, BIP113's behavior would permit some transactions which are currently invalid. E.g. when the current block time is higher than the MedianTimePast and the transaction's locktime is between the block time and the MTP.
There appears to be a straight-forward fix of using MAX(blocktime, MTP+offset) but this deserves some consideration before implementation.