[kragen]

Maybe blockchain.info generates its web pages from a database, and someone inserted a record into the database that doesn't correspond to a transaction with a valid signature? Although if that's the case you would maybe expect them to not mark it as "unconfirmed".

[lisper]

But surely someone would have just checked the signatures on these transactions by now? (I would do it myself but I'm not familiar enough with the bitcoin transaction format.)

[murbul]

They're definitely invalid transactions. The public keys and signatures do not match the address they're trying to spend from. Only blockchain.info failed to detect this minor detail.

[Natanael_L]

"minor"

As in "this plane has no wings" - "that's minor"

[ikeboy]

The raw tx can be found at https://blockchain.info/rawtx/26d80a02ebdd9886b5a859c69c3470...

https://twitter.com/maraoz/status/628614596618813440 confirms it's a fake.