Bitcoin Forum

please make new ability -
request for payment - it's transaction with negative amount
for example:

addr_from = my addr, for request payment
amo = -0.033
addr_to = addr of my client

this transaction not included in blockhain but rertranslated to p2p network

my client receive this transaction and see that in table "requested payments"

https://bitcointalk.org/index.php?topic=114712.msg7887450#msg7887450

And how do you suggest we prevent an attacker from sending out a few billion of these "request for payment" transactions to every possible bitcoin address that they can generate to crash the network?

may be use some commission?
and alternative blokchain for messages, requests?

That doesn't solve anything. A "request for payment" transaction is still a transaction, and would, by default, eventually find its way into the sidechain that you want to implement for it. Automating a transaction is relatively easy -- malicious entities could easily send out millions of those "request for payment" transactions within the first hour of implementing the sidechain. On the other hand, if you force a potential "requester" to pay a transaction fee in order to use the service, then it becomes useless because malicious parties can abuse it by submitting multiple fraudulent purchases to merchants that use an automated implementation of it.

There's really no need for it anyway. Copy-pasting takes less than 2 seconds.

There is something called "email"

It isn't that easy. People can get spammed, the network can get DoSed, and the person that receives such a request has no obligation to pay. You can simply contact him/her through another way and ask him/her to pay.