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[2607:f8b0:4864:20::62b]) by gmr-mx.google.com with ESMTPS id 956f58d0204a3-64477d497c2si495471d50.2.2025.12.14.05.59.40 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 14 Dec 2025 05:59:40 -0800 (PST) Received-SPF: pass (google.com: domain of roconnor@blockstream.com designates 2607:f8b0:4864:20::62b as permitted sender) client-ip=2607:f8b0:4864:20::62b; Received: by mail-pl1-x62b.google.com with SMTP id d9443c01a7336-2a087b2a9c0so16375455ad.0 for ; Sun, 14 Dec 2025 05:59:40 -0800 (PST) X-Gm-Gg: AY/fxX48/keg1QlavKj/x28pkXGharMcgPF1szeTpAog+409esYwPs1I+sCNwqcfFJ7 KGYbLMxiM7HNVaUF8DcnlLSQKRWFDPzldb51nCAt8U+GsVKVGsLBH89BZLau/CokV5apTG0QcMS VffLDZFOxGIqSrvSWIElQKRKJJk9v/GbU+axb6nUxQgRtPD74m543Jp9DFYPH43ohxM61/j6B1H QtE7L6O0P++tjW0zCIPDjtbdp/wSx5BqmSX0sw1MqY1J/zKWCX0A0X4tvkf9wXvMEPkzaGL X-Received: by 2002:a05:7301:470f:b0:2a7:1863:b162 with SMTP id 5a478bee46e88-2ac300f6d6dmr4918323eec.28.1765720778738; Sun, 14 Dec 2025 05:59:38 -0800 (PST) MIME-Version: 1.0 References: <4355092f-4cd6-4e3f-9ae8-4823183ca731n@googlegroups.com> In-Reply-To: From: "'Russell O'Connor' via Bitcoin Development Mailing List" Date: Sun, 14 Dec 2025 08:59:26 -0500 X-Gm-Features: AQt7F2pikaYkc7xuhpnT5D7EE90lfT-HcXROqeVHRIXwnBGe76marpjUKvzmxgA Message-ID: Subject: Re: [bitcoindev] [Discussion] Year 2106 Timestamp Overflow - Proposal for uint64 Migration To: Bitcoin Development Mailing List Cc: Henry Romp <151henry151@gmail.com> Content-Type: multipart/alternative; boundary="000000000000ca20340645e9e734" X-Original-Sender: roconnor@blockstream.com X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@blockstream.com header.s=google header.b="GZdd/k8q"; spf=pass (google.com: domain of roconnor@blockstream.com designates 2607:f8b0:4864:20::62b as permitted sender) smtp.mailfrom=roconnor@blockstream.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=blockstream.com; dara=pass header.i=@googlegroups.com X-Original-From: "Russell O'Connor" Reply-To: "Russell O'Connor" Precedence: list Mailing-list: list bitcoindev@googlegroups.com; contact bitcoindev+owners@googlegroups.com List-ID: X-Google-Group-Id: 786775582512 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-Spam-Score: -1.0 (-) --000000000000ca20340645e9e734 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, Dec 13, 2025 at 5:05=E2=80=AFAM Henry Romp <151henry151@gmail.com> = wrote: > The blockchain won't "halt" at overflow, it will have validation problems= . > The overflow doesn't automatically stop the chain. Nodes would continue > with wrapped-around timestamps (though this would cause some problems). > Yes the blockchain halts. The timestamps are required to eventually increase; more specifically each new timestamp is required to be strictly greater than the MTP timestamp. Assuming these timestamps stay reasonably accurate up to the end then at best you can squeeze out a few more blocks by lying about the time, but eventually the MTP timestamp will reach its maximum value. At that point there are no more valid blocks that can be appended to the chain. --=20 You received this message because you are subscribed to the Google Groups "= Bitcoin Development Mailing List" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to bitcoindev+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/bitcoindev/= CAMZUoKkXQv%2BLO_3iWf1_PnPMR7ocO0ddHZhfZo63Umst%3DpVCPg%40mail.gmail.com. --000000000000ca20340645e9e734 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

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