How do I see what version of bitcoin core my wallet uses

I use the multibit wallet which I understand doesn't download the whole bitcoin core i.e. the entire block chain, but it must use the bitcoin core protocol right? So how do I see which version of the protocol my wallet is using?

Jonathan Chad Faling

Posted 2015-02-17T22:19:37.443

Reputation: 175

Answers

In the Multibit data directory, there is a file called log/multibit.log. When you connect to a peer, it will write something like this to the log:

20:01:26.124 [bitcoinj user thread] DEBUG o.m.c.b.BitcoinPeerEventListener - Connected to peer:
client version: 70002
local services: 1
time:           1424228484
my addr:        [xx.xx.xx.xx]:51127
their addr:     [xx.xx.xx.xx]:8333
sub version:    /Satoshi:0.10.0/
best height:    343977
delay tx relay: true

The 'sub version' field contains the version in a human readable format. The 'client version' field contains a machine-readable protocol version.

Nick ODell

Posted 2015-02-17T22:19:37.443

Reputation: 26 536

Perfect thanks Nick! I appreciate the link to finding the Multibit data directory as well. So bounus question, I see my wallet last used Satoshi:0.9.2.1, but I see it skips around, what determines which version it uses? – Jonathan Chad Faling – 2015-02-19T01:58:10.123

@JonathanChadFaling It connects to nodes owned by other people, so it's whatever they decide to run. – Nick ODell – 2015-02-19T02:17:04.320

This is not entirely true. Looking at https://blockchain.info/connected-nodes, lots of nodes have same 'client version' but vastly differently 'sub versions'.

– Jus12 – 2015-07-04T15:24:33.630

@Jus12 It's because the protocol version and the client version are different. – Nick ODell – 2015-07-04T15:54:15.217

-2

You can find this out on the command line with:

$ bitcoin-cli getinfo

This will give you an output like this:

{   
    "version" : 90400,
    "protocolversion" : 70002,
    "walletversion" : 60000,
    "balance" : 0.62950000,
    "blocks" : 323377,
    "timeoffset" : -5,
    "connections" : 9,
    "proxy" : "",
    "difficulty" : 1.00000000,
    "testnet" : true,
    "keypoololdest" : 1412131069,
    "keypoolsize" : 101,
    "paytxfee" : 0.00000000,
    "relayfee" : 0.00001000,
    "errors" : ""
}

Version is the actual bitcoin core version and probably what you're looking for.

Jimmy Song

Posted 2015-02-17T22:19:37.443

Reputation: 7 067

This appears to get the version of a local bitcoind instance. I don't think that's what the asker is asking about. – Nick ODell – 2015-02-18T03:04:38.717

Gah, you're right – Jimmy Song – 2015-02-18T03:05:17.060