Pay2SH - Strange transactions?

[bernard75]

Someone should do a best of the blockchain. Some whacked scripts are in there. 

Try this one:
https://blockchain.info/tx/e411dbebd2f7d64dafeef9b14b5c59ec60c36779d43f850e5e347abee1e1a455

Still going strong.

[hhanh00]

Someone should do a best of the blockchain. Some whacked scripts are in there. 

Try this one:
https://blockchain.info/tx/e411dbebd2f7d64dafeef9b14b5c59ec60c36779d43f850e5e347abee1e1a455

Maybe this one might is an old attempt at DDOS when the number of sig operation were not limited ? (OP_CHECKSIG do not return from the script, so every op is evaluated)

... maybe most likely a bug, I think OP_CHECKSIG consume the stack so the other one should not be able to execute.

Yes, and it leaves a boolean on the stack which will be used as an arg to the next CHECKSIG.
It's not a good DDOS because the script isn't redeemable and doesn't have to be checked at all.