From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id ED882C37 for ; Sat, 23 Jun 2018 17:06:58 +0000 (UTC) X-Greylist: delayed 00:06:39 by SQLgrey-1.7.6 Received: from jb55.com (jb55.com [45.79.91.128]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 7EBDC720 for ; Sat, 23 Jun 2018 17:06:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d= jb55.com; h=from:to:subject:date:message-id; s=default; bh=86e09cxk8fnWMCcZSf71R4LDppXmgBmR8gozVmEgz6s=; b=R5I5kI44SYPJUb5SVTbJa84qjLICC6XfcOrRTNRom+VClcpYxTd4skM8IeTG9SWW1TmMRk3caEqW+TZznTRpg6JNh7PXsPl6+Q4ie31Gh9DcFkb+sJeuN20R+7m8EYo2EOYnCHy5Fzc3NbafNAoEdSS4Wg077xsyBsSCa4wC/pxalhV9muRFxIuCl67aQWQc0XNUs+8Y35Zf7CL/rdx8ik2MCJ7b0QbonD3qKR3YrJ9kHn8a9xoLtXeXm4u88Zwpz+oF2zIx9nKyjkXLqr/ekFdjyobW7WmnYI7ws11mHfUxWhMYR9fqr9KekdtswiC0woJTie7ezriFX68vSRl0Tg== Received: from jb55.com (S010660e327dca171.vc.shawcable.net [24.84.152.187]) by jb55.com (OpenSMTPD) with ESMTPSA id f87ee450 TLS version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO; Sat, 23 Jun 2018 17:00:18 +0000 (UTC) From: William Casarin To: Achow101 , Bitcoin Protocol Discussion In-Reply-To: References: <21a616f5-7a17-35b9-85ea-f779f20a6a2d@satoshilabs.com> <20180621195654.GC99379@coinkite.com> Date: Sat, 23 Jun 2018 10:00:18 -0700 Message-ID: <87zhzlbfq5.fsf@jb55.com> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org X-Mailman-Approved-At: Sat, 23 Jun 2018 17:22:35 +0000 Subject: Re: [bitcoin-dev] BIP 174 thoughts X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Jun 2018 17:06:59 -0000 Achow101 via bitcoin-dev writes: > I have decided that PSBTs should either be in binary or encoded as a > Base64 string. For the latter, several Bitcoin clients already support > Base64 encoding of data (for signed messages) so this will not add any > extra dependencies like Z85 would. Since we're still considering the encoding, I wonder if it would be a good idea to have a human-readible part like lightning invoices[1]? lightning invoice vvvvvv lnbc1pvjluezpp5qqqsyqcyq5rqwzqfqqqsyqcyq5rqwzqfqqqsyqcyq5rqwzqfqypqdpl2pkx2ctnv5sxxmmwwd5kgetjypeh2ursdae8g6twvus8g6rfwvs8qun0dfjkxaq8rkx3yf5tcsyz3d73gafnh3cax9rn449d9p5uxz9ezhhypd0elx87sjle52x86fux2ypatgddc6k63n7erqz25le42c4u4ecky03ylcqca784w psbt? vvvv 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 Then perhaps you could drop the magic code as well? Also we could do a base encoding that excludes + and / characters, such as base62 (gmp-style). It's easier to copy/paste (double clicking a string stops at / or + in base64 encodings). example human readible part + base62 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 base64: 920 bytes base62: 927 bytes Cheers, [1] https://github.com/lightningnetwork/lightning-rfc/blob/master/11-payment-encoding.md#human-readable-part -- https://jb55.com