Re: [bitcoindev] [BIP Draft] Testnet 5

[José Edil Guimarães de Medeiros]

Hey Pol, Thanks for bringing this out. Do you have more evidence of testnet4 being difficult to use? The Bitcoin talk thread seems to be a conversation between 3 or 4 people, not a generalized concern (at least for now). I mean, what are the specific use cases that worth looking in more detail to decide about this specific proposal tradeoffs? I'm not trying to push back the proposal, but I feel that a new testnet without pow exceptions will very soon cause complaints of 1) coins being too difficult to mine without a lot of hash rate, and 2) moments when the chain doesn't progress because "big" miners just decided to point the machines elsewhere. And if miners keep this new network quite stable, it's pretty reasonable to anticipate that non-negligible value will emerge for these coins and we are soon enough talking about reseting it (or spawning a new test network) again. I wonder if the goal of having a clone of mainnet with worthless coins is even possible.  -- Edil On 2 Jun 2026, at 08:27, 'Pol Espinasa' via Bitcoin Development Mailing List <bitcoindev@googlegroups.com> wrote:  Dear list, I am sharing a BIP draft for a new Testnet5. People are complaining about Testnet4 being difficult to use, the new testnet also works as a miner playground for BIP54, we are killing two birds with one stone. You can find the full text to read and comment on in the following draft PR: https://github.com/fjahr/bips/pull/2 Feel free to leave inline comments there or respond here on the list. Pol -- 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 email to bitcoindev+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/bitcoindev/BrgqDZiNhpEz32-Z9ZX2rrPDE9EUIb62SKT2WsTo-yZtd3gLMLVk6TkO6kLIR96-87TumXqi92l_m1j3xlJr1tcJwG_I3UVDk2NZgXZL8fw%3D%40protonmail.com. <publickey - polespin...@protonmail.com - 0x44205759.asc> -- 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 email to bitcoindev+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/bitcoindev/286A17B7-9FAE-4FCD-A054-58688E797EE1%40gmail.com.