You could, but you'd also have to modify the checksum built into the bitcoin addresses in order for most (all?) bitcoin clients to broadcast the transaction.[1]

You could, but you'd also have to modify the checksum built into the bitcoin addresses in order for most (all?) bitcoin clients to broadcast the transaction.[1][2] [1] https://en.bitcoin.it/wiki/Address https://en.bitcoin.it/wiki/Address [2] https://en.bitcoin.it/wiki/Technical_background_of_version_1_Bitcoin_addresses https://en.bitcoin.it/wiki/Technical_background_of_version_1...