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| author | Adam Back <adam@cypherspace.org> | 2014-04-28 14:41:02 -0700 |
|---|---|---|
| committer | bitcoindev <bitcoindev@gnusha.org> | 2014-04-28 21:41:18 +0000 |
| commit | b8da2d6d0d9594cb1d031f70b171bfdb745102a2 (patch) | |
| tree | c77e0fa7e82cb9fbe840d2f9d8ebf30d78e350ba | |
| parent | 149706f831c16479ba27c14d3dd9444bfffcb2d9 (diff) | |
| download | pi-bitcoindev-b8da2d6d0d9594cb1d031f70b171bfdb745102a2.tar.gz pi-bitcoindev-b8da2d6d0d9594cb1d031f70b171bfdb745102a2.zip | |
Re: [Bitcoin-development] Coinbase reallocation to discourage Finney attacks
| -rw-r--r-- | 51/a089d723833fb39901def469e21a01c73be058 | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/51/a089d723833fb39901def469e21a01c73be058 b/51/a089d723833fb39901def469e21a01c73be058 new file mode 100644 index 000000000..dc886330b --- /dev/null +++ b/51/a089d723833fb39901def469e21a01c73be058 @@ -0,0 +1,109 @@ +Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] + helo=mx.sourceforge.net) + by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) + (envelope-from <adam@cypherspace.org>) id 1WetIc-0000Ju-1B + for bitcoin-development@lists.sourceforge.net; + Mon, 28 Apr 2014 21:41:18 +0000 +X-ACL-Warn: +Received: from mout.perfora.net ([74.208.4.195]) + by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) + (Exim 4.76) id 1WetIa-00084b-7W + for bitcoin-development@lists.sourceforge.net; + Mon, 28 Apr 2014 21:41:17 +0000 +Received: from netbook (c-50-136-255-6.hsd1.ca.comcast.net [50.136.255.6]) + by mrelay.perfora.net (node=mrus3) with ESMTP (Nemesis) + id 0Likh3-1XAvGO1tJV-00dLGx; Mon, 28 Apr 2014 17:41:08 -0400 +Received: by netbook (Postfix, from userid 1000) + id DFC962E0C45; Mon, 28 Apr 2014 14:41:03 -0700 (PDT) +Received: by flare (hashcash-sendmail, from uid 1000); + Mon, 28 Apr 2014 14:41:02 -0700 +Date: Mon, 28 Apr 2014 14:41:02 -0700 +From: Adam Back <adam@cypherspace.org> +To: Gareth Williams <gacrux@gmail.com> +Message-ID: <20140428214102.GA8347@netbook.cypherspace.org> +References: <CANEZrP3obO9rXKcX+G7bs2dd3AqEFOsO8pCUF6orrkGeZyr9Ew@mail.gmail.com> + <CAC1+kJPxwTm6qvh2GYT2XMJAPD5O4WHLOGBTRmchRmZ2wS4MSg@mail.gmail.com> + <CANEZrP2PZFVvH3oJyLW80e9W_Fa4bvqQ25E7T-ZFFuG9u-q1hQ@mail.gmail.com> + <5359E509.4080907@gmail.com> + <CANEZrP0bKe-=T5ps0myLZjo60tv2mkm3Bw0o4e-9y7zb1h5eDg@mail.gmail.com> + <535A60FE.10209@gmail.com> + <CANEZrP0y45eSVgbzXYmvYy1WEQNyd=tmC2EpZgGSB28poXSzDw@mail.gmail.com> + <535BA357.6050607@gmail.com> + <CANOOu=_T82zuV79DWZFGK0Nomhp-Y4tqOhw6ZHhCLb2uGtdR5w@mail.gmail.com> + <535CFDB4.1000200@gmail.com> +MIME-Version: 1.0 +Content-Type: text/plain; charset=us-ascii; format=flowed +Content-Disposition: inline +In-Reply-To: <535CFDB4.1000200@gmail.com> +User-Agent: Mutt/1.5.21 (2010-09-15) +X-Hashcash: 1:20:140428:gacrux@gmail.com::vrrJ/4l+UEw40/l3:0544J +X-Hashcash: 1:20:140428:bitcoin-development@lists.sourceforge.net::RhXsBcD6pqJ6o + 33x:000000000000000000000d60 +X-Hashcash: 1:20:140428:adam@cypherspace.org::4CO6g1gaHXfAaZM6:00000000000000000 + 0000000000000000000000001hHu +X-Provags-ID: V02:K0:OrgTtgGro7QKs5LGVJXkXjGWsjj01C9WkuQezAOoJ2H + JofcndtTMgrBPfjNsk32ahOzktvrsiRRIXDf+KGHVJWnj/RRBt + wFZaywKsOKRnRBVWUSKspd2NQ9/Jy+0wnCjDtxkd+Npv6/8ZyJ + 5/68lwf4x1A+kKB8TxfhUEgBiLsgjzJ6OHvgH66XqubHT+3FJf + pbr4BSlGx/egyxueKzjA3P+j5FLq+2uaw9EBzuXobLeBnFA/p8 + 3QL+Y2/DyIvLZaS6PEbv0dXoNOr4nmlbeQkr4SWyBuYA+E5gck + eHjxCOU+APOcdQJr6UmPM7e9a9gsfcjA64x4m4JRr5nWGuNwfj + 9krZdLxbbrVMumoLokQjxdR9mkFHmvjRT/8ufYqas +X-Spam-Score: -0.0 (/) +X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. + See http://spamassassin.org/tag/ for more details. + -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, + no trust [74.208.4.195 listed in list.dnswl.org] + -0.0 SPF_HELO_PASS SPF: HELO matches SPF record +X-Headers-End: 1WetIa-00084b-7W +Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net> +Subject: Re: [Bitcoin-development] Coinbase reallocation to discourage + Finney attacks +X-BeenThere: bitcoin-development@lists.sourceforge.net +X-Mailman-Version: 2.1.9 +Precedence: list +List-Id: <bitcoin-development.lists.sourceforge.net> +List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, + <mailto:bitcoin-development-request@lists.sourceforge.net?subject=unsubscribe> +List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=bitcoin-development> +List-Post: <mailto:bitcoin-development@lists.sourceforge.net> +List-Help: <mailto:bitcoin-development-request@lists.sourceforge.net?subject=help> +List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bitcoin-development>, + <mailto:bitcoin-development-request@lists.sourceforge.net?subject=subscribe> +X-List-Received-Date: Mon, 28 Apr 2014 21:41:18 -0000 + +On Sun, Apr 27, 2014 at 10:53:08PM +1000, Gareth Williams wrote: +>Bitcoin is this perfect /trustless/ mathematical machine [...] +> +>2. the economic majority will not cooperate to reinterpret history +> +> [this proposal was...] replacing it with: +> +>2. the economic majority will not cooperate to reinterpret history +>against any good guys, only against bad guys; "please trust their good +>judgement." + +Nicely put. + +I agree the idea of a populist vote to redistribute or remove mining reward +is an inelegant thing which would probably devolve into politics. + +I think the reason that it would likely work out badly is that its not +provable, and so no consensus rule can be constructed requiring proof, so +then it risks devolving to a political decision. + +Step 1: Finney attackers for hire anonymize their blocks (publish via Tor, +use a different reward address for each block, and each pool miner). +Demanding identification of blocks is generally undesirable for the +objective of avoiding centralization and policy abuse. Dont even think +about demanding identity, there is no identity in a distributed system. + +Step 2: people send tracer payments through Finney attackers, and use that +evidence to decide to vote away their reward. (However the proof is +non-transitive so people can vote anyway they like for any reason). + +Step 3: Finney attackers vote down other pools to make the point. + +Adam + + |