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[103.168.172.157]) by gmr-mx.google.com with ESMTPS id 8926c6da1cb9f-4f26372bbf4si141968173.1.2025.03.14.01.52.22 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Mar 2025 01:52:22 -0700 (PDT) Received-SPF: pass (google.com: domain of sjors@sprovoost.nl designates 103.168.172.157 as permitted sender) client-ip=103.168.172.157; Received: from phl-compute-10.internal (phl-compute-10.phl.internal [10.202.2.50]) by mailfhigh.phl.internal (Postfix) with ESMTP id 07F941140120 for ; Fri, 14 Mar 2025 04:52:22 -0400 (EDT) Received: from phl-mailfrontend-02 ([10.202.2.163]) by phl-compute-10.internal (MEProxy); Fri, 14 Mar 2025 04:52:22 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddufedtgedtucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdggtfgfnhhsuhgsshgtrhhisggv pdfurfetoffkrfgpnffqhgenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpih gvnhhtshculddquddttddmnecujfgurhephfgtgfgguffkfffvofesthhqmhdthhdtvden ucfhrhhomhepufhjohhrshcurfhrohhvohhoshhtuceoshhjohhrshesshhprhhovhhooh hsthdrnhhlqeenucggtffrrghtthgvrhhnpeetvefhtdffudfghfeufeevvdejfeeiudev hffgjeegfeduieefjeeffeeitdetheenucffohhmrghinhepghhithhhuhgsrdgtohhmpd gsihhttghoihhntghorhgvrdhorhhgnecuvehluhhsthgvrhfuihiivgeptdenucfrrghr rghmpehmrghilhhfrhhomhepshhjohhrshesshhprhhovhhoohhsthdrnhhlpdhnsggprh gtphhtthhopedupdhmohguvgepshhmthhpohhuthdprhgtphhtthhopegsihhttghoihhn uggvvhesghhoohhglhgvghhrohhuphhsrdgtohhm X-ME-Proxy: Feedback-ID: ie5e042df:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA for ; Fri, 14 Mar 2025 04:52:21 -0400 (EDT) From: Sjors Provoost Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.400.131.1.6\)) Subject: [bitcoindev] Does anyone still need testnet3? Message-Id: <9FAA7EEC-BD22-491E-B21B-732AEA15F556@sprovoost.nl> Date: Fri, 14 Mar 2025 09:52:10 +0100 To: Bitcoin Development Mailing List X-Mailer: Apple Mail (2.3826.400.131.1.6) X-Original-Sender: sjors@sprovoost.nl X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@sprovoost.nl header.s=fm2 header.b=RAsYv6fZ; dkim=pass header.i=@messagingengine.com header.s=fm1 header.b=m8Ix6H5W; spf=pass (google.com: domain of sjors@sprovoost.nl designates 103.168.172.157 as permitted sender) smtp.mailfrom=sjors@sprovoost.nl; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sprovoost.nl 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: -0.8 (/) Dear list, Testnet 4 was proposed last year in BIP94 [0] and is supported by Bitcoin C= ore since v28. To make Bitcoin Core easier to maintain we would like to drop support for T= estnet3 in a future release. This will happen no earlier than v30 this fall= . The upcoming v29 release still supports it, and will throughout its maint= enance period [1]. The network itself can't be deleted, so anyone willing to maintain node sof= tware themselves can keep using testnet3 until the end of time. One of the motivations for introducing testnet4 was that testnet3 became in= creasing impractical to use due to block storms. So perhaps everyone alread= y moved on to using testnet4 or a signet. As an aside, it's possible to create a pure proof-of-work permissionless si= gnet without any signatures, by setting the challenge to OP_TRUE. [2] However, if anyone is still using testnet3 and needs more time to move away= from it, please let us know. E.g. as a reply to the list or a comment on t= he Github issue [3]. This could include libraries, staging environments, te= stnet wallets, etc. Although the v29 maintenance window will last for a few years, it's also im= portant to know if dropping testnet3 would prevent you from upgrading to th= e next major node version. In other words, if migrating away from testnet3 = would take you longer than all of 2025. Although "I don't feel like it" isn't a great technical argument, it's stil= l useful to know what to expect and perhaps others can help. - Sjors [0] https://github.com/bitcoin/bips/blob/master/bip-0094.mediawiki [1] https://bitcoincore.org/en/lifecycle/#maintenance-period [2] https://github.com/bitcoin/bips/blob/master/bip-0325.mediawiki#specific= ation [3] https://github.com/bitcoin/bitcoin/issues/31975 --=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/= 9FAA7EEC-BD22-491E-B21B-732AEA15F556%40sprovoost.nl.