Do a search on google for
transaction spam "proof of work" site:bitcointalk.org
That would probably be easier than the forums search feature. Some of the people involved with bitpay will have a discussion earlier than that thread in 2011, and it went easily back into 2010.
The resolution usually ends up being: There are better ways.
Topic: A solution that solves tx spam issue and lets GPU miners to stay in business (Read 851 times)
March 29, 2013, 04:25:26 PM
March 29, 2013, 04:23:26 PM
I've seen this discussed dozens of times.
https://bitcointalksearch.org/topic/hashcash-for-dealing-with-dust-spam-24745
https://bitcointalksearch.org/topic/hashcash-for-dealing-with-dust-spam-24745
Thx for the link, as 99% of the others I don't use search button
March 29, 2013, 04:21:39 PM
I've seen this discussed dozens of times.
https://bitcointalksearch.org/topic/hashcash-for-dealing-with-dust-spam-24745
https://bitcointalksearch.org/topic/hashcash-for-dealing-with-dust-spam-24745
March 29, 2013, 04:15:27 PM
Only TL;DR version:
Every transaction must contain a nonce so SHA256(SHA256([transaction hash] + [nonce])) < [some target dependent on tx size]. GPU miners could provide service to find tx nonces for small "fee". Spammers will be forced to spend a lot of computing power which better would be used for mining. If someone can't afford to find a nonce s/he could just include old-style fee.
Seems to be a decent solution?
Every transaction must contain a nonce so SHA256(SHA256([transaction hash] + [nonce])) < [some target dependent on tx size]. GPU miners could provide service to find tx nonces for small "fee". Spammers will be forced to spend a lot of computing power which better would be used for mining. If someone can't afford to find a nonce s/he could just include old-style fee.
Seems to be a decent solution?
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