combine announce URLs into one torrent file
No.
or create a separate torrent file for each tracker?
Yes.
You can also check in the rules/FAQ of each private tracker but it's universal that all private trackers require their torrents to exist and announce/share peers separately. That doesn't mean the data has to be separate e.g. if it's the same torrent data you can point multiple torrents to the same data.
You forgot to mention their Tor link, seems to be working fine http://l337xdarkkaqfwzntnfk5bmoaroivtl6xsbatabvlb52umg6v3ch44yd.onion/
(also linked in https://1337x-status.org/ )
Eh, sure OP could do that. Does seem a bit over the top for OP to pursue the most complicated backup solution possible :D Maybe as a strange experiment to see how it goes, not as a trusted backup solution. (like you said not for critical data)
IPFS would also require more bandwidth vs just about any other solution since it has to constantly talk to other IPFS nodes. And more finicky, last I used IPFS the client would run into memory leaks and other weirdness requiring restarts every now and then (hopefully it's more stable for long-term runs nowadays).
Similar but no, Syncthing does not use bittorrent or the bittorrent protocol.
Though if you're curious Resilo Sync (formerly Bittorrent Sync) is similar to Syncthing and does use bittorrent.
Wouldn't be a good solution, you're hoping that other users are going to volunteer to pin (aka store and seed) your personal backup data for you.
Using IPFS for personal backups is exactly the same as creating a torrent with your backup data - With both it would be unlikely that your personal backup data will actually exist anywhere beyond your own data storage, no one's going to freely volunteer to store your backups for you.
Not overly active but there are a few communities you could join if you like
https://opentrackers.org/ is also a good site to keep an eye on (though it seems to be less active at the moment).
Not sure which country you're in but in the U.S. I haven't seen many gift cards that are contactless tap-to-pay so you would want to double-check. Without tap-to-pay those type of cards would need to be added into a phone app (Google Wallet / Apple Pay) to be able to tap-to-pay using it.
It's possible outside the U.S. it's more common for gift cards to be able to tap-to-pay.
Or if you're talking about store gift cards then the same applies, most of those aren't tap-to-pay either so you'd want to double-check.
Prime95 and Memtest86+ both run under Linux so no issues there.
You could also run those sort of apps off a Linux boot USB, or one of the Linux based diagnostic boot USB projects. I like SystemRescue (https://www.system-rescue.org/System-tools) but there are plenty of others you can check out - SystemRescue includes memtest86+ / stress / stress-ng / stressapptest for system stress testing so that could be something to try.
Yup like others said the lack of a CPU cooler is definitely the problem here. CPUs heat up quickly and once they hit their thermal limit the system will shut down to try to avoid hardware failure. Hopefully the CPU wasn't damaged from repeatedly overheating while you were testing without cooling.. it might be okay, only way to know for sure is to properly install a cooler and then test.
Once you've got it going I'd suggest doing a burn-in test just to be sure the CPU will last. Been a bit since I've done a build but usually I'd run something like Prime95 to be sure the CPU and cooling is stable.
Ah yeah I saw that one but I don't think it does quite what OP wants. Seems more like it is designed to monitor a running qBittorrent client and then copy the .torrent file(s) to Transmission, with all torrent data in the same data folder. Might not help much for OP with all the different data folders they have in their current setup.
My concept is as such: have a shared folder where everything is moved after download. I call this /mnt/torrents.
The script provided that makes all of this happen is a python script. It queries the qBittorrent client for uploading or completed downloads, checks to see if they are private or public torrents, then copies the .torrent files to the respective "watched" directory of the public or private (transmission) client. It just copies the .torrent files to directories, so it should be usable with other torrent clients that have "watched" directories.
But either way nice effort! I'm kind of surprised at the lack of scripts to import torrents into Transmission. The only related script I could find is to do Transmission --> qBittorrent but it doesn't seem to do the reverse https://github.com/Mythologyli/transmission-to-qbittorrent
and even then, I tried one and for some reason it wouldn’t verify my downloaded files and insisted on redownloading the torrent from scratch. Even though I had made sure I was pointing to the correct directory. This may be because I’ve renamed files in the past
That should work fine.. I suspect that failed maybe because you renamed like you said. Make sure Transmission is adding torrents in paused mode, then do another test with a torrent you definitely didn't rename. Maybe just do a test download in qBittorrent and then attempt to add it into Transmission e.g. a Linux Mint torrent or similar is usually a safe test https://www.linuxmint.com/edition.php?id=319
Because of how you have your torrents organized it does sound like you'll need to tough it out and add each torrent and configure it manually.
It would be easier if you had all the torrent data saved in the same folder(s), in which case just configure Transmission to add torrents in pause mode, configure a watch folder, copy your qBittorrent's .torrent files into that watch folder, and finally do a re-check in Transmission and start all the torrents. Then just hardlink the torrent data out into your own nested folders how you want them set up, that way the same data exists and is linked in two places (torrent data folder and your own folders). Maybe it's something to consider for your future configuration but it's not going to help you much right now.
For now yeah, the best you could do is set Transmission to add torrents in paused mode, configure a watch folder, copy paste your current qBittorrent .torrent files, then afterwards in Transmission change each torrent's data location and re-check one-by-one. Not sure if it's any faster than just adding the torrents manually one-by-one :/
You should be able to find the current .torrent files wherever MacOS saves your qBittorrent files, look for a folder that looks like qBittorrent / BT_backup, all the .torrent files in BT_backup are your loaded torrents inside qBittorrent.
With some luck maybe you can find a tool that does qBittorrent --> Transmission migrations? I wasn't sure if any exist, all I can find are tools to do Transmission --> qBittorrent e.g. https://github.com/undertheironbridge/transmission2qbt
(note I'm not on MacOS so maybe someone else has more direct advice to offer)
Nope, I prefer being able to run my own network router, open/close my own ports, block ads on the network, hopefully get as much bandwidth as I can, etc. so it's usually better for me to subscribe to my own internet.
... But since you bring it up, coincidentally I currently live on a street with shops/restaurants on the main floor under me. And all their wifi networks are visible from my apartment... so technically yeah, if I go through the trouble of collecting all their wifi passwords I could just hang out on their networks for free internet. Internet probably wouldn't be great and not very private without a VPN but for free web browsing it should work.