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Title: Mystery transaction in block 299506 -- Can it be spent? Post by: keatonatron on May 07, 2014, 03:52:33 PM Hey all,
I noticed this transaction: https://blockchain.info/tx/136becd0892fa38c5aca8104db8b90b3a0e6b40912b7d1462aed583c067054cd It kind of looks like the output script is saying, as long as you provide a valid multisig for any address you can spend it (the wiki says OP_MULTISIG drops one item from the stack, so I'm guessing the OP_NOT just gets ignored. If not, does it mean anything that isn't a multisig is usable??) Is this transaction spendable? Does OP_MULTISIG even work when it isn't a multisig address? Title: Re: Mystery transaction in block 299506 -- Can it be spent? Post by: telepatheic on May 07, 2014, 04:13:13 PM Yes it is spendable by placing an invalid signature followed by some pub keys.
Code: 0 <invalid-sig> 1 <pub1> <pub2> 2 will spend the transaction. Title: Re: Mystery transaction in block 299506 -- Can it be spent? Post by: keatonatron on May 08, 2014, 05:35:02 AM Nice. Why are the public keys required? Shouldn't anything that fails the multisig check work, or does OP_MULTISIG error out if it doesn't have them? (e.g. NULL != FALSE)
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