Can I check my bitcoin balance without the Internet

[Charles-Tim]

I know it is NO in relation to the reason I am asking the question. Let me assume I may be wrong, which is the reason for this question.

Albon is right about this but I noticed people have not yet posted there which is the reason I created this on technical board for people to know about it.

Here is it: Warning: SeedCheckPro is a Scam!

All I see about this is a scam. I will remove the negative trust if anyone give a valid reason it is not a scam.

[achow101]

Technically, you can, within some limit of "recent".

If you have a copy of the UTXO set, you can do a balance check even if you are not online. However, this copy of the UTXO set becomes outdated the moment another block is found, although for many people, being within a couple days is most likely okay.

Even so, with a UTXO set copy, you're looking at something that is on the order of several GB of data, which will have to be downloaded from somewhere at some point in time.

Otherwise, any claims of checking a balance offline is probably a scam.

[Hatchy]

Fact is, even if something of that nature we're to exist, the op still clearly hasn't explained why he's pushing so much for user in the community to download and use his API tool. His agenda looks different from what he's trying to sell. It's a red flag for me as well as I don't trust any third party apps on my devices. And I hope some naughty newbies don't dive into installing a wallet draining app on their devices...

[LoyceV]

Even so, with a UTXO set copy, you're looking at something that is on the order of several GB of data

My latest compressed list of addresses with balance is 1562 MB, but that won't show you the transactions.

I will remove the negative trust if anyone give a valid reason it is not a scam.

Of course it's a scam. I have no problem believing there are still people who download and install unknown software to create or enter seed phrases. Self-custody is not for everyone, and all we can do is warn them.

[dkbit98]

I remember few years ago someone posted that people sent bitcoin without any internet, but it was done using radio connection.
So maybe in theory there is a way to also check bitcoin balance using radio signal, but I doubt fishy Seedcheckpro you posted has anything to do with that.

[NotFuzzyWarm]

I remember few years ago someone posted that people sent bitcoin without any internet, but it was done using radio connection.
So maybe in theory there is a way to also check bitcoin balance using radio signal, but I doubt fishy Seedcheckpro you posted has anything to do with that.

No matter what is used be it packet radio, light beams, a mesh network, carrier pigeon etc at some point there MUST be an internet connection at the end of that trail that connects with the BTC network to be able to access it and get/send information to it. Period.

[Yanghudi]

I see someone else said we can use a wallet that supports spv to be able to see bitcoin balances offline https://www.quora.com/Can-Bitcoin-balances-be-checked-offline-without-downloading-the-entire-blockchain#:~:text=Yes%2C%20you%20can%20check%20Bitcoin,portion%20of%20the%20blockchain%20data.

[Charles-Tim]

I see someone else said we can use a wallet that supports spv to be able to see bitcoin balances offline https://www.quora.com/Can-Bitcoin-balances-be-checked-offline-without-downloading-the-entire-blockchain#:~:text=Yes%2C%20you%20can%20check%20Bitcoin,portion%20of%20the%20blockchain%20data.

You mean this:

Yes, you can check Bitcoin balances offline without downloading the entire blockchain by using a hardware wallet or a wallet that supports Simplified Payment Verification (SPV). These methods allow you to verify transactions using only a portion of the blockchain data.

This is absolutely wrong, but just the offline part.

The person is trying to differentiate between full clients (full node) and SPV (light clients) wallets. You still need the Internet to synchronize your wallet with the blockchain.

[dkbit98]

No matter what is used be it packet radio, light beams, a mesh network, carrier pigeon etc at some point there MUST be an internet connection at the end of that trail that connects with the BTC network to be able to access it and get/send information to it. Period.

I guess it would be great to have offline money for time when internet is not working... oh wait a minute, we already have that and it's called CASH

I see someone else said we can use a wallet that supports spv to be able to see bitcoin balances offline https://www.quora.com/Can-Bitcoin-balances-be-checked-offline-without-downloading-the-entire-blockchain#:~:text=Yes%2C%20you%20can%20check%20Bitcoin,portion%20of%20the%20blockchain%20data.

Hardware wallets are not downloading the entire blockchain, and you can't download anything if you don't have internet connection.
Maybe some wallets and hardware wallets can show the last balance of your coins, but that can be different from the actual amount.