If it's takes too long, usually it's because there are too many possible combination, slow hardware or both of them. If you have GPU, you should configure btcrecover to use GPU which give massive speed improvement (up to 96x times according to the guide). Check this guide  https://btcrecover.readthedocs.io/en/latest/GPU_Acceleration/. If you could share your token file (make sure to change listed character/word for your own security), other member might be able to suggest more efficient token which reduce possible combination.

Alternatively, wait for few more years where Bitcoin price might be higher and GPU is far faster. Don't forget to make multiple backup of your wallet.dat file and write down part/characteristic of your password.

Today i checked the website again and now it's back online. Apparently the list has been updated yesterday (08 February 2022) and now there's rectangle box (on right side of the page) for easier navigation. There's still no contact option beside email which use their own domain though.

It's possible Bitcoin Core didn't scan whole blockchain when you load your wallet. You can try solve the problem using command rescanblockchain on Bitcoin Core Console.

To be fair, NFC doesn't have universal standard either. Wikipedia (https://en.wikipedia.org/wiki/Near-field_communication#Standards) mention there are at least 4 different standard for NFC.


If your main concern is security and you know how to setup cold/airgapped wallet, QR code is better option.

It is possible and there are news that some ISP actually inspect/collect/sell your traffic data. Here are few random reference,
https://www.ftc.gov/news-events/press-releases/2021/10/ftc-staff-report-finds-many-internet-service-providers-collect
https://www.lightreading.com/security/t-mobile-to-join-atandt-verizon-in-selling-customers-data/d/d-id/767955
https://en.wikipedia.org/wiki/Deep_packet_inspection


Great suggestion, i forget such tool is exist. But IIRC it lacks integration with OS service (such as initrc or systemd), so you'll need to create it manually if you wish convenience offered by OS service (such as start on boot and logging).

I would shorten it to one of those



While i find this website useful, i wouldn't bother manually create the short link. I expect more people would use it if there's simple text input and button to shorten the link automatically.

The target of such scam isn't you, but people who have no digital security awareness or think after take an action.

It's even better if you choose non custodial and open source wallet with decent reputation.


Ask them how long you'll need to wait until the "issue" resolved, IMO they expect you'll forget about the issue soon by giving vague answer.

You could abuse comment field in payRequest to send small amount of data. But both peer must explicitly enable comment field and it's limited by 2000 character on the URL (which also contain payment information), so it's more practical to use comment field to send notes/download link instead.

I don't disagree with your statement, but it's like comparing apples with oranges. Bitcoin is cryptocurrency while GoFundMe is crowdfunding platform. They could suffer from similar fate as long as they rely on centralized service (e.g. BitPay).

Thanks for the information. While it's better than no backup, another problem is "Previous Version" use low percentage of partition space. If the partition space is really small and user frequently write files, it's possible Electrum wallet files won't be or less frequently backed up.

Exact hardware (CPU brand, CPU type, etc.)? I doubt it. But we do know some Bitcoin nodes run on VPS. It's indicated by Bitcoin node IP which is in IP range of certain VPS provider. Those VPS provider usually state their hardware specification, so you could get minimum number of node which use modern Intel/AMD CPU.

Depending on your end goal, contribute to or privately modify existing open-source wallet should be better option since you could reuse existing component and avoid create new/re-implement existing standard.

Another service that i know is https://ramp.network/. There are multiple ways to integrate it with your website/application, but there's easy way by adding 1 HTML tag (https://docs.ramp.network/web/quick-start-hosted/).

P.S. i never use this service, so you should additional research (such as their ToS).

How about this?



Why not? It's most practical option if you're not cryptography/math expert.

While i agree with your statement, very few ASIC-resistant perform good enough. For example, developing Ethash ASIC took long time and it's efficiency isn't very big against GPU (if you compare efficiency between GPU and ASIC with different ASIC-resistant algorithm). RandomX also looks promising, but time will tell how well it perform.


As long as there's multiple competitor on SHA-256 ASIC, i would say no.

And that's why you shouldn't run random application/script you found on internet, even if you use Linux.


Application with lots of dependency also risky, i expect someone will try to perform supply chain attack on programming library.

Thanks for your effort, i appreciate it. But it's almost 3 times of original, no wonder they require you to sign up to see the spec/price. There's better alternative such as SporeStack (https://sporestack.com) which is accountless and cheaper.

According to Wikipedia, RTX 3080 Ti and RTX 3090 have very similar TFLOPs. So it should be cheaper to rent 3080 Ti where you could reduce the cost up to 25% (rough estimation).



I expect you'll need to register to many GPU renting marketplace and VPS provider. But VPS provider usually offer enterprise GPU instead (such as A5000) which is far more expensive.

I saw the note, but it doesn't say anything about active account which never/almost never receive merit. But i trust you'll ignore vote from obvious abuser.