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Date: Fri, 02 Oct 2015 09:14:11 -0400
From: jl2012@xbt.hk
To: Mike Hearn <hearn@vinumeris.com>
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Cc: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev]
 =?utf-8?q?Crossing_the_line=3F_=5BWas=3A_Re=3A_Let?=
 =?utf-8?q?=27s_deploy_BIP65_CHECKLOCKTIMEVERIFY!=5D?=
Precedence: list

According to the Oxford Dictionary, "coin" as a verb means "invent (a 
new word or phrase)". Undoubtedly you created the first functional SPV 
client but please retract the claim "I coined the term SPV" or that's 
plagiarism.

And I'd like to highlight the following excerpt from the whitepaper: 
"the simplified method can be fooled by an attacker's fabricated 
transactions for as long as the attacker can continue to overpower the 
network. One strategy to protect against this would be to accept alerts 
from network nodes when they detect an invalid block, prompting the 
user's software to download the full block and alerted transactions to 
confirm the inconsistency."

Header only clients without any fraud detecting mechanism are functional 
but incomplete SPV implementations, according to Sathoshi's original 
definition. This might be good enough for the first generation SPV 
wallet, but eventually SPV clients should be ready to detect any rule 
violation in the blockchain, including things like block size (as 
Satoshi mentioned "invalid block", not just "invalid transaction").

Mike Hearn via bitcoin-dev 於 2015-10-02 08:23 寫到:
> FWIW the "coining" I am referring to is here:
> 
> https://bitcointalk.org/index.php?topic=7972.msg116285#msg116285 [4]
> 
> OK, with that, here goes. Firstly some terminology. I'm going to call
> these things SPV clients for "simplified payment verification".
> Headers-only is kind of a mouthful and "lightweight client" is too
> vague, as there are several other designs that could be described as
> lightweight like RPC frontend and Stefans WebCoin API approach
> 
> At that time nobody used the term "SPV wallet" to refer to what apps
> like BreadWallet or libraries like bitcoinj do. Satoshi used the term
> "client only mode", Jeff was calling them "headers only client" etc.
> So I said, I'm going to call them SPV wallets after the section of the
> whitepaper that most precisely describes their operation.