Comments on: Bitcoin blockchain pruning – How to reduce Bitcoin core wallet file size

By: James

James — Mon, 08 Feb 2021 18:26:33 +0000

What’s next please? I just downloaded pruned Bitcoin Core and have a brand new Coldcard. I’d like to setup and start using to buy my first Bitcoin. Thanks.

By: Jan

Jan — Sat, 15 Aug 2020 15:16:34 +0000

In reply to Jim. I take it you have never run the Bitcoin Core node yourself? You see it is *not* one big file that all is saved in. It is a whole bunch of files that all together make up the blockchain.

By: Ted

Ted — Wed, 13 Mar 2019 05:15:45 +0000

In reply to Paolo Brocco. Yes, that is correct. Just copy blocks and chainstate folders to another machine. It should work.

By: Paolo Brocco

Paolo Brocco — Thu, 07 Mar 2019 09:08:14 +0000

You wrote “you can still find someone that you can trust. Like get a copy of blockchain from your friends computer, transfer it to USB stick, download it to your machine and sync it just like that. It also works if they’ve pruned blockchain already.”

How would that process work? I downloaded the entire blockchain on a spare computer at home, now I’d like to setup another machine, how should I proceed? In some other guide I read it’s enough to copy these subdirectories from .bitcoin dir: blocks and blockchainstate

I assume if I switch pruning e.g. 550 I can also copy just these 2 folders. Can you confirm, or which other files may be needed?

By: Rosdi

Rosdi — Sun, 09 Sep 2018 10:43:52 +0000

Awesome explanation! All my questions answered in single blog post! This should be in the Bitcoin GitHub Wiki.

By: Jim

Jim — Thu, 06 Sep 2018 15:41:58 +0000

I would think that, in addition to the file size being reduced, the reduction in size would likely mean less chance of any data errors within the file commensurate with the reduction in size. Ie., if a 200 gig file has a 2% chance of corruption in a 24 month period, a 2 gig file would likely have .02% chance of data loss due to physical sector damage.