same tx
sender -------- > mixer ----> payee
change<--------|
First tell dev to post md5 of whateverattached_senderaddress.
If he knows the address he should post it...
ATC is right not to post the MD5, someone could write a scrypt scanning the blockchain for all used addresses & checking there MD5.
With both start & begin addresses finding the route between is easy.
If md5 posted it should be in a encrypted file we can all download first. After the answer has been given, release the password.
there is no need, when/if somebody posts the address, I will provide the details to the other side of the transaction which will either prove they are correct or prove they are wrong