tx id or gtfo
Address:
12345axoUbDGTizHzYZkN9SFvgtbr1HbkD
Message:
Signature:
HEYL4mqKrEDU7fPAPvyV2CxNgMh+3+CCaqfPZARYvsDZplbyBaLDt0vsXUgjw35rFbeb5tQ2hsQ6wP8sokQdMFc=
Lol.
He didn't want you to sign a message to prove your adress is your address.
He wanted the Transaction Id Number (short: TX ID) of the actual payment of the 0.33 BTC to your address.
Edit: Anyways: I just looked up your address on blockchain.info and it appears there were just two tarnsactions so far. You received 0.99 BTC with this transaction:
849e983e6ef89a280d3fa60f6592e8bb2b04dc7372bb5807b3cb6ea6df446e71And then you've sent them straight away the next day in this transaction:
3b6a427a4438a4322963ffb095b2234c923e1ca2ed1cce9ffa0635b067e7f9d2Tx 1: 1AbJ824LfkCdQ1p5AHu429YqvswWSxJNNe sends 12345axoUbDGTizHzYZkN9SFvgtbr1HbkD 0.99 BTC and 1DjZWyLa9xAC8BF7qqShXRA9BZVh6hufZ3 0.0608571 BTC (the change back to the "buyer")
Tx 2a: 12345axoUbDGTizHzYZkN9SFvgtbr1HbkD sends all bitcoin to 1VzsopZFgHErYVcbNkNGFoJfn6qWBXkN3
Tx 2b: 1VzsopZFgHErYVcbNkNGFoJfn6qWBXkN3 sends 1LdN3mDWQCeJu2uBuuHyJqR9XbyiPJgSdH 0.6 BTC and
1VuMZFo9WqfCvDKMJ5gqGvvoqAQE3d4Lf 0.3898 BTC
Tx 3a: 1DjZWyLa9xAC8BF7qqShXRA9BZVh6hufZ3 sends all bitcoin to 1FGqnuPBH1D8RBwKi3bktikATaYjyGcrUm
Tx 3b: 1FGqnuPBH1D8RBwKi3bktikATaYjyGcrUm sends 1M3AnXqnFStwcs7VN6tUSK1vjUPD32WZqA 0.0186 BTC and
1VuMZFo9WqfCvDKMJ5gqGvvoqAQE3d4Lf 0.0420571 BTC