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Date: Wed, 22 Jul 2015 17:06:02 -0400 Message-ID: From: Gavin Andresen To: Tier Nolan Content-Type: multipart/alternative; boundary=001a1135e3d663740d051b7d2389 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: bitcoin-dev@lists.linuxfoundation.org Subject: Re: [bitcoin-dev] BIP: Short Term Use Addresses for Scalability X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Development Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Jul 2015 21:06:04 -0000 --001a1135e3d663740d051b7d2389 Content-Type: text/plain; charset=UTF-8 On Wed, Jul 22, 2015 at 4:34 PM, Tier Nolan via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote: > It also requires most clients to be updated to support the new address > system. That's the killer: introducing Yet Another Type of Bitcoin Address takes a very long time and requires a lot of people to change their code. At least, that was the lesson learned when we introduced P2SH addresses. I think it's just not worth it for a very modest space savings (10 bytes, when scriptSig+scriptPubKey is about 120 bytes), especially with the extreme decrease in security (going from 2^160 to 2^80 to brute-force). -- -- Gavin Andresen --001a1135e3d663740d051b7d2389 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

On W= ed, Jul 22, 2015 at 4:34 PM, Tier Nolan via bitcoin-dev &= lt;bitcoin-dev@lists.linuxfoundation.org> wrote:
It also requires most clients to be updated to suppor= t the new address system.

That's the killer: intr= oducing Yet Another Type of Bitcoin Address takes a very long time and requ= ires a lot of people to change their code. At least, that was the lesson le= arned when we introduced P2SH addresses.

I think it's just not worth it for a= very modest space savings (10 bytes, when scriptSig+scriptPubKey is about = 120 bytes), especially with the extreme decrease in security (going from 2^= 160 to 2^80 to brute-force).

--
Gavin Andresen

--001a1135e3d663740d051b7d2389--