Post
Topic
Board Bitcoin Technical Support
Re: Bitcoin QT unconfirmed transaction
by
HI-TEC99
on 07/06/2017, 21:34:56 UTC
thanks for your fast answer

my qt is version 4.8.3 i think it is from 2014




You need to upgrade your wallet. Wallet's older than v0.11.1 can generate transactions with high S values, which haven't been allowed since October 2015 when v0.11.1 was released.




Bitcoin core nodes will now only accept transactions with low S values. They used to generate and accept transactions with high S values, but that's no longer allowed since the release of core wallet v0.11.1 in October 2015. If his wallet's older than v0.11.1 he needs to upgrade.


https://bitcoin.org/en/release/v0.11.1

Quote
Test for LowS signatures before relaying

Make the node require the canonical ‘low-s’ encoding for ECDSA signatures when relaying or mining. This removes a nuisance malleability vector.