How to Import BTC Blockchain into Bitcoin Core on a Mac

Hey everyone I wanna set up a BTC node on my Mac, but my internet plan isn’t enough to download the entire blockchain (it’s like 720 GB). So, I was thinking of asking a friend to download it on his Windows PC for me. Can I just import that blockchain from an external hard drive into Bitcoin Core and start syncing from there?

Yo! Yeah, you can do that, as far as I know. Someone asked something similar here a while back, and NotATether had some good tips. Definitely worth a shot, it should work for ya!

Nah, that’s not the best approach. You should be downloading your own copy of Bitcoin Core and rescan the blockchain to ensure it’s all legit. Plus, you’ll still have to download like a GB or more weekly to keep it in sync.

This is mostly for Windows users. You can’t just transfer it from Windows to Mac like that. The directories are totally different. Best bet is to grab the Bitcoin folder from the Windows PC and swap it into your Mac’s Bitcoin Core directory. But I’d rather not risk it, always verify, don’t just trust.

Another idea is to connect both PCs to the same local network. You can manually add the other node in Bitcoin Core for local syncing. Never tried it myself, but it might work.

Thanks for the advice! I really appreciate it. I was struggling to figure this out. My main hard drive is low on space too… do you think I can change the path in Bitcoin Core settings to my external hard drive?

You could, but I wouldn’t recommend it. External drives can disconnect if you bump the cable, which could mess up your blockchain data. Seriously though, what’s your reason for running a full node? If you lack space and bandwidth, why not just go for a light wallet like Electrum? Or prune the blockchain if you really need to.

Thanks for that! I’m kinda new to all this tech stuff. I want to protect my transactions. I heard running my own server is a great way to keep my addresses safe from prying eyes. Yeah, I want to prune the blockchain, but I get that I need the full chain at least once before it’ll only keep the latest blocks. I’ll look into Electrum more.

When you say "protect," are you talking about theft or privacy? Electrum over Tor is an option. The server might see which addresses are linked, but it can’t track where you are. If you set Bitcoin Core to prune right from the start, it’ll do it while syncing. Going for minimum pruning shouldn’t take more than 15 GB in space. But remember, syncing a pruned node is still pretty intensive.

Yeah, I meant privacy. Thanks for clarifying! Not sure how linking addresses could be a problem, though. And good to know about the pruning feature, I didn’t realize it worked that way.

It really depends on your needs. If you wanna be completely secure from chain analysis, don’t use a public Electrum server. That said, most people probably aren’t worried about that. With Bitcoin Core, you might reduce privacy too, since it can link addresses together.

Alright, thanks for the info! I’ll think about it. I get it, I’m not planning to run the node all the time but I know it’s better for the BTC community. But hey, isn’t it all about keeping your keys offline? What are your top picks for hardware wallets?

I don’t trust phones at all. Even offline, they can connect in the background. Better to use an offline Linux PC. Honestly, it varies. A Trezor with Electrum is a solid option for security and ease. Bitcoin Core is trickier to use offline. Still, for convenience on the go, a mobile wallet like Mycelium is handy, but for long-term, air-gapped storage is safer.

I get that. Phones can be sketchy, even with some settings off. But I think you can disable that "find my phone" feature. Thanks for all the tips, really appreciate the chat!