[bitcoin-dev] Pre-BIP Growth Soft-hardfork

jl2012 at xbt.hk jl2012 at xbt.hk
Sun Feb 7 17:53:53 UTC 2016

This looks very interesting. The first time implementing it might be more
painful but that will make subsequent hardforks a lot easier.

Do you think it's good to include the median timestamp of the past 11 blocks
after the block height in coinbase? That would make it easier to use it as
activation threshold of consensus rule changes.

For the witness commitment, it will also be treated as a merge mined

It is also good to emphasize that it is the responsibility of miners, not
devs, to ensure that the hardfork is accepted by the supermajority of the

-----Original Message-----
From: bitcoin-dev-bounces at lists.linuxfoundation.org
[mailto:bitcoin-dev-bounces at lists.linuxfoundation.org] On Behalf Of Luke
Dashjr via bitcoin-dev
Sent: Sunday, 7 February, 2016 17:53
To: Bitcoin Dev <bitcoin-dev at lists.linuxfoundation.org>
Subject: [bitcoin-dev] Pre-BIP Growth Soft-hardfork

Here's a draft BIP I wrote almost a year ago. I'm going to look into
revising and completing it soon, and would welcome any suggestions for doing

This hardfork BIP aims to accomplish a few important things:
- Finally deploying proper merge-mining as Satoshi suggested before he left.
- Expanding the nonce space miners can scan in-chip, avoiding expensive
  calculations on the host controller as blocks get larger.
- Provide a way to safely deploy hardforks without risking leaving old nodes
  vulnerable to attack.


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