Bitcoin-abc: Migration from Bitcoin Unlimited

Created on 24 Jul 2017  路  3Comments  路  Source: Bitcoin-ABC/bitcoin-abc

We could gather here instructions and feedback about migrating a node from BU to Bitcoin ABC.

So, anything in particular to do in order to migrate besides installing Bitcoin ABC and running it?

  • Anything about the config?
  • Any caveats?

Other places where this question has been asked:
subreddit /r/BitcoinABC/
subreddit /r/btc/
Arch Linux unofficial package

Most helpful comment

@thezerg has already announced that BU will issue a compatible version.

For those who want to switch before the fork activates - it is just a matter of changing the client. They can work on the same blockchain data files right now. You should be able to switch back and forth without problems before the fork.

After the fork, you need to make sure you run the right client (UAHF-compatible, i.e. ABC or special BU/Classic/XT versions) on the right blockchain data (i.e. the Bitcoin Cash / UAHF chain data).

ABC supports the excessiveblocksize parameter used by BU config, so there is nothing to change there at the moment.

Please help to forward this info to other places.


Switching to the Bitcoin Cash chain after the fork will require some more actions.
Once there are good instructions, I'll try to remember to link them here too.

All 3 comments

@thezerg has already announced that BU will issue a compatible version.

For those who want to switch before the fork activates - it is just a matter of changing the client. They can work on the same blockchain data files right now. You should be able to switch back and forth without problems before the fork.

After the fork, you need to make sure you run the right client (UAHF-compatible, i.e. ABC or special BU/Classic/XT versions) on the right blockchain data (i.e. the Bitcoin Cash / UAHF chain data).

ABC supports the excessiveblocksize parameter used by BU config, so there is nothing to change there at the moment.

Please help to forward this info to other places.


Switching to the Bitcoin Cash chain after the fork will require some more actions.
Once there are good instructions, I'll try to remember to link them here too.

This is what I've used on Ubuntu 14.04:

sudo add-apt-repository --remove -y ppa:bitcoin-unlimited/bu-ppa
sudo apt-get remove -y bitcoind bitcoin-qt
sudo add-apt-repository -y ppa:bitcoin-abc/ppa
sudo apt-get update -y
sudo apt-get install -y bitcoind bitcoin-qt
start bitcoind

For those who want to switch before the fork activates - it is just a matter of changing the client. They can work on the same blockchain data files right now

Thanks, it worked for me :)

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