Return-Path: Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2473BC0037 for ; Tue, 19 Dec 2023 00:46:24 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id E6E8382281 for ; Tue, 19 Dec 2023 00:46:23 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org E6E8382281 Authentication-Results: smtp1.osuosl.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=Yy1ixGpQ X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: -2.099 X-Spam-Level: X-Spam-Status: No, score=-2.099 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IK-7IL6W8C53 for ; Tue, 19 Dec 2023 00:46:23 +0000 (UTC) Received: from mail-io1-xd2b.google.com (mail-io1-xd2b.google.com [IPv6:2607:f8b0:4864:20::d2b]) by smtp1.osuosl.org (Postfix) with ESMTPS id 4C26B820D9 for ; Tue, 19 Dec 2023 00:46:23 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 4C26B820D9 Received: by mail-io1-xd2b.google.com with SMTP id ca18e2360f4ac-7b71b10391aso199322139f.3 for ; Mon, 18 Dec 2023 16:46:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1702946782; x=1703551582; darn=lists.linuxfoundation.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=GXoI7PxGAfJmtG1+4y18MZBARUHi+rEe6fnldx0qXBk=; b=Yy1ixGpQnCJrHegq42Idb0A6jIYJiJl/A+8f+BaW5T8pHW7QcVNuydo79cmE9yVei7 ZMWBnTPTRPXh6mg+1g/uxgC79eiH61satgtJTRT5cgvsZHtYiHryBV3HhumKmL1flXGu WC0yiELD/tZoSxAA8mK+SAiRqh5pFpvrPgjYryVOmIJUNqaV6lzf3IzwR/5Gc5fWV0NW 5UBfqJaKsbqigUbPQxdI0jKFZRUjsEHO9Nb/Y4IZgBZUbARXGI757T56q/3zqqdtHaDF sFGrToc3uNDKgW9gSSN9n68qkykdUFZjqgapesPQPOs+STN6JNJbnK2sa485WRNxkQQq GAlQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702946782; x=1703551582; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=GXoI7PxGAfJmtG1+4y18MZBARUHi+rEe6fnldx0qXBk=; b=vczKTptDCgpyaFJ95U0IEVDRDs1FmW+6t6Na2uaNP5dy/ZpSxt8h96YKRrE9KAtDAW 3sdTOerjw/Hy1TP3JywHLewFOkr2MRL2GgjtBB1kUEV8PsZcmFfN5EcmyMUoPSiKZ3ZQ 24mHcCaabRA9LwmDNfce1p0ywCA3+f42nzMckaEpsHye5eOgXdgbIN1IIQOHLYQiOWqn +saU9dkDcF/nP7qHaXwnjVTqf18EC79m0ca+/wcG3KEqFodo/HFG1Gn+O/bvuxSBV1fy iYgsz2jXcvFewbJF3TO/wmz+2ZGrFFq97gTD4RX2Q4K9KNfQLr7ThvtcaV+dy+yjlCtN VhOg== X-Gm-Message-State: AOJu0YwxK2c2omnf4I4G0AQjWm+QDhrxdLKtjRlfDXbzO/qi2XIrDBMi 7NZgP+fEzE2FnS79k8iveysxIc4HnMyA9K68k24= X-Google-Smtp-Source: AGHT+IFsupM/PePTUyeMgmOyOS0dSWCa3PFev3oskRryvyK9aj7Y/j1RadnF8YdXgcT6PZSydgYvBfeMFCfp8Z2BUKE= X-Received: by 2002:a05:6e02:388e:b0:35f:bc20:b7d9 with SMTP id cn14-20020a056e02388e00b0035fbc20b7d9mr662602ilb.30.1702946782178; Mon, 18 Dec 2023 16:46:22 -0800 (PST) MIME-Version: 1.0 References: <-lH1AcjRwuxfuqLPFOh_oga10Qm12fb7Se9imDeS5ft6CU3y8KTQa3tBP0twJJBFSHgj7FC8EIxvEser3oZdWvkeitRwERQl_cCdgAWtbTU=@pm.me> <1aHuuO-k0Qo7Bt2-Hu5qPFHXi4RgRASpf9hWshaypHtdN-N9jkubcvmf-aUcFEA6-7L9FNXoilIyydCs41eK4v67GVflEd9WIuEF9t5rE8w=@pm.me> In-Reply-To: <1aHuuO-k0Qo7Bt2-Hu5qPFHXi4RgRASpf9hWshaypHtdN-N9jkubcvmf-aUcFEA6-7L9FNXoilIyydCs41eK4v67GVflEd9WIuEF9t5rE8w=@pm.me> From: Nagaev Boris Date: Mon, 18 Dec 2023 21:45:45 -0300 Message-ID: To: yurisvb@pm.me Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Mailman-Approved-At: Tue, 19 Dec 2023 02:21:17 +0000 Cc: Bitcoin Protocol Discussion Subject: Re: [bitcoin-dev] Lamport scheme (not signature) to economize on L1 X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Dec 2023 00:46:24 -0000 On Mon, Dec 18, 2023 at 7:44=E2=80=AFPM wrote: > > I beg to disagree: key owner broadcasts first bundle (let's call it this = way) so that it is on any miner's best interest to include said bundle on t= heir's attempted coinbase because they know if they don't any other competi= ng miner will in the next block. What if an attacker broadcasts the first bundle? He spent a lot of time cracking the hash which is the part of the address in the proposed scheme. Then he cracked the second layer of hashing to have both hashes ready. If the utxo has enough sats, the attack is economically viable. --=20 Best regards, Boris Nagaev