error 16: mandatory-script-verify-flag-failed

[matthieu]

Hi,

I get this error when trying to sent btc from electrum (v 1.9.8 )

Code:

The transaction was rejected by network rules : error 16: mandatory-script-verify-flag-failed (non canonical DER signature)

And I get the same error if I try to sweep the key to a new wallet
The key is from a block I mined in 2011, could it be related ?

Thanks
M.

[matt4054]

The key is from a block I mined in 2011, could it be related ?

Yes. I'm afraid that you might have to craft a custom transaction manually, but I'm not proficient enough with the Bitcoin protocol to tell you specifically how to do it. Soft forks have been rolled out since 5 years ago.

Have you tried importing the key in Bitcoin Core instead?

[matthieu]

Have you tried importing the key in Bitcoin Core instead?

Thanks for your answer, I'll try with bitcoin core

[twister]

Download and install the latest version of the electrum and try to make the same transaction again, it should work. Don't have to create a new wallet, the old wallet will be selected by default which I think already contains the key with the coins that you imported.

[matthieu]

I had try already with electrum 2.5.4
And I just tried with 2.6.4 and still the same error

I'll try with bitcoin-core as soon as I'm finished downloading the blockchain but I'm starting to worry

[matt4054]

I'll try with bitcoin-core as soon as I'm finished downloading the blockchain but I'm starting to worry

Are you finished with downloading the blockchain?

Bitcoin Core allows you to do almost anything including broadcasting raw transactions. As long as you have the private keys that belong to the public keys (addresses) that received the money, you should be safe.

[matthieu]

I just finished downloading the blockchain today and the transaction worked from bitcoin core, I managed to send my coins to a new electrum wallet
Thanks for your messages !

[matt4054]

Glad to hear that, it is a good example to show why independence from client-specific implementations using private keys export/import is a feature that should be preserved no matter what