[bitcoin-dev] BIP147 minor error

Sergio Demian Lerner sergio.d.lerner at gmail.com
Tue Mar 22 10:39:51 UTC 2016


My mistake.
El mar 22, 2016 3:49 AM, <jl2012 at xbt.hk> escribió:

> Do you mean BIP141?
>
>
>
> Your example is an error by BIP141:
>
>
>
> 1*4 + 79999*1 = 80003 > 80000
>
>
>
> *From:* bitcoin-dev-bounces at lists.linuxfoundation.org [mailto:
> bitcoin-dev-bounces at lists.linuxfoundation.org] *On Behalf Of *Sergio
> Demian Lerner via bitcoin-dev
> *Sent:* Monday, 21 March, 2016 10:51
> *To:* bitcoin-dev <bitcoin-dev at lists.linuxfoundation.org>
> *Subject:* [bitcoin-dev] BIP147 minor error
>
>
>
> The BIP147 reads:
>
> *Sigop cost* is defined. The cost of a sigop in traditional script is 4,
> while the cost of a sigop in witness program is 1.
>
> The new rule is total *sigop cost* ≤ 80,000.
>
> But the code implements:
>
> if (nSigOps + (nWitSigOps + 3) / 4 > MAX_BLOCK_SIGOPS)
>
>  ... error....
>
> Which is not the same.
>
>
> For example:
>
> nSigOps = 1
> nWitSigOps =79999
>
> Is not an error by BIP definition but it's an error by the implemented
> code.
>
> Regards, Sergio.
>
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