Electrum 3.0 is out !

[nerioseole]

Wow - a big thanks to all the contributors!  

This is a huge code upgrade !!!  
    
     - Code migration from Python 2.7 to Python 3.x
     - Code migration from QT4 to QT5
     - Segwit support

Release Notes: https://github.com/spesmilo/electrum/blob/master/RELEASE-NOTES

Download: https://electrum.org/#download
 
"To Infinity and Beyond !"

[HCP]

Website still not updated... All links still point to 2.9.3... and the page still says latest is V2.9.3.

Seems the binaries are on the download server here: https://download.electrum.org/3.0/

Not sure if they're final tho? #useAtYourOwnRisk

[F8N00]

I just created a new segwit wallet but my new address start with bc1*************** and not with 3*********
Why?

[PVminer]

I just created a new segwit wallet but my new address start with bc1*************** and not with 3*********
Why?

This is a native segwit standard (so called bech32 address using P2WPKH) but this is not yet supported by merchants or other wallets. The addresses starting with 3 are P2SH addresses. They can specify many things, including segwit embedded inside P2SH (P2SH-P2WPKH). I figured out how to create such a wallet in Electrum (use BIP39 seed and m/49'/1'/0' derivation path) but it may be better to wait for some more official tutorials.

Unfortunately, segwit wallets are not standardized yet and there might be problems with importing/exporting keys between wallets.

[TryNinja]

Website still not updated... All links still point to 2.9.3... and the page still says latest is V2.9.3.

Seems the binaries are on the download server here: https://download.electrum.org/3.0/

Not sure if they're final tho? #useAtYourOwnRisk

Looks like they already fixed that. Check the website.
I believe it's already safe since they released it at the GitHub repo: https://github.com/spesmilo/electrum/releases/tag/3.0.0

I also had to upgrade my wallet file to a non backward compatible format. Make sure you have your seed saved somewhere to avoid any issues.
Also, looks like you can't view a address with segwit's native format at the blockchain.info explorer. Is it okay to use it?

[RGBKey]

Congratulations to the Electrum team on this huge milestone. I've been waiting excitedly for SegWit support, and you've delivered  

Edit: Windows seems to block the installer binary because it's not signed

[usd]

Could you help me with this issue at starting of Electrum 3.0 ?
"Error loading Python DLL" - python35.dll

Thanks

[PVminer]

Could you help me with this issue at starting of Electrum 3.0 ?
"Error loading Python DLL" - python35.dll

Thanks

It is being worked on. See, https://github.com/spesmilo/electrum/issues/3171

[jackg]

Could you help me with this issue at starting of Electrum 3.0 ?
"Error loading Python DLL" - python35.dll

Thanks

It is being worked on. See, https://github.com/spesmilo/electrum/issues/3171

That folder doesn't exist according to my version of windows. Is it just the best version of windows this effects 7 and are there any other reeases that work or will they all fail.

Also, for the latest version of python to run, Windows 7 SP1 is needed...

[BitMaxz]

Website still not updated... All links still point to 2.9.3... and the page still says latest is V2.9.3.

Seems the binaries are on the download server here: https://download.electrum.org/3.0/

Not sure if they're final tho? #useAtYourOwnRisk

Looks like they already fixed that. Check the website.
I believe it's already safe since they released it at the GitHub repo: https://github.com/spesmilo/electrum/releases/tag/3.0.0

I also had to upgrade my wallet file to a non backward compatible format. Make sure you have your seed saved somewhere to avoid any issues.
Also, looks like you can't view a address with segwit's native format at the blockchain.info explorer. Is it okay to use it?

Did you test to send  some bitcoin to other wallet if its support segwit when sending bitcoin or any changes of the fee and size. .

Hope that you can give some review of new  electrum that support segwit.. waiting for feedback if ever this is the final wallet that support segwit hope that it will work..

i just downloaded the portable for testing ..

Do i still need to install python in my windows 7 pc? or electrum 3.0 is only works in linux?

[TryNinja]

Did you test to send  some bitcoin to other wallet if its support segwit when sending bitcoin or any changes of the fee and size. .

Hope that you can give some review of new  electrum that support segwit.. waiting for feedback if ever this is the final wallet that support segwit hope that it will work..

Fees and size are the same as other segwit transactions. I haven't paid attention to the differences, so I can't comment on that.

I would do like Electrum is recommending and keep using a standard address while all major services start upgrading their code to support bech32 addresses.

Do i still need to install python in my windows 7 pc? or electrum 3.0 is only works in linux?

If you are in a windows machine, you don't need to install python or any other dependencies. Just download it and you are good to go.

[lovejah]

Just installed in on Windows 10 64bit (finally) and its not stop synchronizing..

[HCP]

Just installed in on Windows 10 64bit (finally) and its not stop synchronizing..

Try shutting down Electrum, deleting the "blockchain_headers" and "recent_servers" files from your "%AppData%/Electrum" folder and then restart Electrum.

NOTE: DO NOT just delete the Electrum folder, you'll lose your wallet files!


If that doesn't help, try going to "Tools -> Network"... Untick the "select server automatically" and manually change to a new server.

[BitMaxz]

Did you test to send  some bitcoin to other wallet if its support segwit when sending bitcoin or any changes of the fee and size. .

Hope that you can give some review of new  electrum that support segwit.. waiting for feedback if ever this is the final wallet that support segwit hope that it will work..

Fees and size are the same as other segwit transactions. I haven't paid attention to the differences, so I can't comment on that.

I would do like Electrum is recommending and keep using a standard address while all major services start upgrading their code to support bech32 addresses.

Do i still need to install python in my windows 7 pc? or electrum 3.0 is only works in linux?

If you are in a windows machine, you don't need to install python or any other dependencies. Just download it and you are good to go.

Not working in my windows 7 im getting error when opening electrum wallet
I'm getting error like "Error loading python dll"Python35.dll not loading or getting this error..
I think its need to download  a python which is work in windows 7?

Updated: Just try to install portable electrum in windows server 2016 RDP in aws. its working fine but in my laptop error loading python..
Hope someone can give me idea to fix this..

[jackg]

Did you test to send  some bitcoin to other wallet if its support segwit when sending bitcoin or any changes of the fee and size. .

Hope that you can give some review of new  electrum that support segwit.. waiting for feedback if ever this is the final wallet that support segwit hope that it will work..

Fees and size are the same as other segwit transactions. I haven't paid attention to the differences, so I can't comment on that.

I would do like Electrum is recommending and keep using a standard address while all major services start upgrading their code to support bech32 addresses.

Do i still need to install python in my windows 7 pc? or electrum 3.0 is only works in linux?

If you are in a windows machine, you don't need to install python or any other dependencies. Just download it and you are good to go.

Not working in my windows 7 im getting error when opening electrum wallet
I'm getting error like "Error loading python dll"Python35.dll not loading or getting this error..
I think its need to download  a python which is work in windows 7?

Updated: Just try to install portable electrum in windows server 2016 RDP in aws. its working fine but in my laptop error loading python..
Hope someone can give me idea to fix this..

Windows 7 64bit by any chance on your laptop? Yeah. I got the same problem and another user already posted before about it. I'm not sure there's a fix as of yet, you'll have to try to run portable versions on other operating systems on your laptop to get it to work (or wait for the patch update).

[BitMaxz]

Did you test to send  some bitcoin to other wallet if its support segwit when sending bitcoin or any changes of the fee and size. .

Hope that you can give some review of new  electrum that support segwit.. waiting for feedback if ever this is the final wallet that support segwit hope that it will work..

Fees and size are the same as other segwit transactions. I haven't paid attention to the differences, so I can't comment on that.

I would do like Electrum is recommending and keep using a standard address while all major services start upgrading their code to support bech32 addresses.

Do i still need to install python in my windows 7 pc? or electrum 3.0 is only works in linux?

If you are in a windows machine, you don't need to install python or any other dependencies. Just download it and you are good to go.

Not working in my windows 7 im getting error when opening electrum wallet
I'm getting error like "Error loading python dll"Python35.dll not loading or getting this error..
I think its need to download  a python which is work in windows 7?

Updated: Just try to install portable electrum in windows server 2016 RDP in aws. its working fine but in my laptop error loading python..
Hope someone can give me idea to fix this..

Windows 7 64bit by any chance on your laptop? Yeah. I got the same problem and another user already posted before about it. I'm not sure there's a fix as of yet, you'll have to try to run portable versions on other operating systems on your laptop to get it to work (or wait for the patch update).

No My machine is windows 7 ultimate 32bit. I thought its working base on what Tryninja said..
Well i tried it in RDP from aws but its not safe so i think better to wait for the new patch for new electrum supports segwit..
The  new electrum 3.0 the options are really different from old wallet and the address started from bc1 hope they can give some resolution to use electrum 3.0 in windows 7 OS.

[jackg]

Did you test to send  some bitcoin to other wallet if its support segwit when sending bitcoin or any changes of the fee and size. .

Hope that you can give some review of new  electrum that support segwit.. waiting for feedback if ever this is the final wallet that support segwit hope that it will work..

Fees and size are the same as other segwit transactions. I haven't paid attention to the differences, so I can't comment on that.

I would do like Electrum is recommending and keep using a standard address while all major services start upgrading their code to support bech32 addresses.

Do i still need to install python in my windows 7 pc? or electrum 3.0 is only works in linux?

If you are in a windows machine, you don't need to install python or any other dependencies. Just download it and you are good to go.

Not working in my windows 7 im getting error when opening electrum wallet
I'm getting error like "Error loading python dll"Python35.dll not loading or getting this error..
I think its need to download  a python which is work in windows 7?

Updated: Just try to install portable electrum in windows server 2016 RDP in aws. its working fine but in my laptop error loading python..
Hope someone can give me idea to fix this..

Windows 7 64bit by any chance on your laptop? Yeah. I got the same problem and another user already posted before about it. I'm not sure there's a fix as of yet, you'll have to try to run portable versions on other operating systems on your laptop to get it to work (or wait for the patch update).

No My machine is windows 7 ultimate 32bit. I thought its working base on what Tryninja said..
Well i tried it in RDP from aws but its not safe so i think better to wait for the new patch for new electrum supports segwit..
The  new electrum 3.0 the options are really different from old wallet and the address started from bc1 hope they can give some resolution to use electrum 3.0 in windows 7 OS.

Tryninja must be running a different OS or found a replacement (e.g. downloading the library file - NOT RECOMMENDED).
I'm like you wand waiting for the version to be compatible. I found it is just windows 7 and 8.1 it doesn't work on Windows server OSes and the other windows OSes run find.

Can you elaborate on what you mean by how it is different in the way it imports addresses as you said? I've not seen this (as I haven't got if to run - I might be able try later on a Pi though so any guidance on it's runnings would be helpful especially private key/address wise).

[skd]

I'm Electrum 2.9.3 user and unfortunately also using Win7 64-bit on my main PC. I see I'll have to wait for update.
But I have also a Win10 machine and will give it a go there.

Have two questions to ask:

1/ Could someone explain in simple words, for the average users, what are the main benefits of Electrum 3.0 vs 2.9.3? What this segwit support is used for? Has this something to do with the forthcoming fork?

2/ If we are using ver.2.9.3 now, how shall be proceeded in installation process? Should we de-install the old version and re-install the new one, or we may install straight over v.2.9.3?

3/ Should we be in a hurry at all to install the 3.0 version?

Sorry if these question have been already asked but I couldn't see anywhere around here something explained or  installation manual.

[jackg]

1/ Could someone explain in simple words, for the average users, what are the main benefits of Electrum 3.0 vs 2.9.3?

The fees are reduced due to each inputer being smaller as some of the data is stored in relation to the original address (the one beginning with a 1), and some is stored in relation to the segwit address (the segwit address). Although someone may be able to explain this more clearly than I can

What this segwit support is used for? Has this something to do with the forthcoming fork?

This specifically is to do with the August 1^st fork this year. The upcoming fork is Segwit2x. The August 1st fork was the Segwit one that this supports.

2/ If we are using ver.2.9.3 now, how shall be proceeded in installation process? Should we de-install the old version and re-install the new one, or we may install straight over v.2.9.3?

Write down you seed and if you install the new wallet in the way you previously installed the last one and it uses a heuristic algorithm so should be able to find your wallet file and if not, import your seed.

3/ Should we be in a hurry at all to install the 3.0 version?

No it just means that you can send with lower fees.
You do have to send the coins to a P2SK(/segwit) address before you can sign a segwit transaction.

[Rahar02]

I just created a new segwit wallet but my new address start with bc1*************** and not with 3*********
Why?

This is a native segwit standard (so called bech32 address using P2WPKH) but this is not yet supported by merchants or other wallets. The addresses starting with 3 are P2SH addresses. They can specify many things, including segwit embedded inside P2SH (P2SH-P2WPKH). I figured out how to create such a wallet in Electrum (use BIP39 seed and m/49'/1'/0' derivation path) but it may be better to wait for some more official tutorials.

Unfortunately, segwit wallets are not standardized yet and there might be problems with importing/exporting keys between wallets.

It's a good development for electrum, but address start with bc1*** is a native segwit standard? I don't know about it, and doesn't have to start with "3" right? As long as it's segwit address, doesn't matter for me.
But, regarding segwit address cause low fees for bitcoin transaction, is it really worth? I mean, we pay very low fees such $0,4 but miners tend to pick higher fees to included into next block, especially for current market transactions, over 54,000 unconfirmed transactions.