True but isn't that 'average' only for situations when all the words are candidates for the checksum?
If the only candidates are his 12 words, then the odds should be way lower than that (depending on the words), or wont even form another combination with a valid checksum.

That's because it's not designed to look for every possible "accounts" but only pre-specified derivation paths listed in:
https://github.com/spesmilo/electrum/blob/master/electrum/bip39_wallet_formats.json

Since the seed phrase is obviously not made by Electrum (it's a BIP39 seed),
it's most likely from another wallet with unique derivation path that aren't listed in the '.json' file above; or just a random seed you've taken note of.

He mentioned that the "checksum passes" so the words must be in the correct order.

I prefer "for information" conversations public so other users can use it for reference and also to minimize duplicated topics.

No, but blocks aren't something you can pre-generate then put in the blockchain days later.

It's called "block" + "chain" for a reason,
because the next block should be built on top of the latest block since the previous block's "hashPrevBlock" should be included to the next block's block header (so on, so forth); that connects the chain.
If you somehow managed to build a valid block now, but haven't broadcast it right away, then it wont be valid after its height was occupied by another miner's block.
Not to mention, the validity of the transactions in it.

BTW, you should specify the steps that you've done to build a block.

Then you would have to pay miners with amount greater than the reward that they usually receive from their mined blocks.
You're basically asking a miner to mine "your block" which is technically theirs since they will do the proof-of-work.

Here are the miners: http://bitcointalk.org/index.php?board=14.0 | Go to "pool" sub-board.

Abdussamad's reply will work if you've selected "keystore 1" or "keystore 2".
If it's 'keystore 1', there's a shortcut to get the master private key, it is by using the 'console' tab (View->Show Console),
then type: getmasterprivate()

It can get ugly if you somehow selected "keystore 3" which is owned by TrustedCoin.
In which case, requires manually contacting them to co-sign your transaction.

Okay, so there's no missing character in the seed phrase since you already found 4 addresses.
So, the actual issue is finding the correct "derivation path" of the funded address(es).

Because there can't be a typo if you can properly restore the seed phrase with BIP39-supported wallets (it has a checksum).

Question is, how many Bitcoin accounts did you have in your Ledger Live?
Because aside from the first, every consecutive accounts can't be recovered by using the default derivation path (it needs tweaking).

With that, your initial concern persists because in events of a theft, if the USB flash Drive/PC is stolen, then your wallet files will be stolen as well.

If you still want that, Tails has the option to create a "persistent storage" where you can store the wallet file.
It's basically an encrypted storage in the USB flash drive which is exempted from Tail's "amnesia". It's protected by your admin password.
My suggestion is at least set a different password (strong ones) for the persistent storage and your Electrum.

I can't find any PR that added any "taproot upgrade" wallet command or GUI feature, it's only added by default for newly created descriptor wallets.

For now, you can manually import a new tr() parent descriptor for it to be able to create Bech32m addresses.
The steps are similar to this post: bitcoin.stackexchange.com/questions/108006/how-to-make-a-taproot-transaction-with-bitcoin-cli
But instead of xpub, use xprv.

---

That version is still in development so it's still open for updates.
Try to open a new issue - feature request: something like "add an option to create taproot descriptor for old descriptor wallets".

Seriously?
One letter typo isn't that complicated to do manually since there are only a few similar words in the BIP39 word list.
Use CTRL+F, then search the typo~ed word's first few characters...

I bet there's more to this than what's stated in the OP like he might have found the correct seed (checksum: ok) but failed to find his balance.

If you're going for a live-OS as suggested by NeuroticFish, I'd recommend my personal favorite: TailsOS (tails.boum.org).

Booting it up and restoring the seed every time you need to sign takes a few minutes but your bitcoins will be safe even if the flash drive or cold-storage PC got stolen.
The only factor that you can be hacked is through the seed phrase so do your best to remember it so you wont have to keep the paper backup in an accessible storage.

If it's good enough for you then why switch?
Or are you using it only as a "hot wallet"?

Because it can be set-up as a cold-storage: electrum.readthedocs.io/en/latest/coldstorage

It's "script" not "scrypt", the former is the algorithm used for mining altcoins like Litecoin.
Since the original isn't English, it may be the local translation of that English word; if not, please tell the owner of the thread as well.

For the examples:
legacy () - n2ZJnxwXebK7KkWrKFFU7cnL8mufqQVmiL or mqmwkULXCx8zSTDwrofLY4whMR5aFKjLuY
p2sh () - 2MzwFhATVfQg2dgizr26mZYo67135wRgQgD

Do you know those participants? Either way, it's an insane idea.
If at least one of the participants is being paid to deanonymize users, then he can create a list of actual persons who are involved in that specific Coinjoin transaction.

If it's JFF, then do not use any "stained" UTXO to be mixed and do not consider the output properly mixed.

He's talking about the persons who will have their coins mixed together with his.

So far, so good.
It rescanned so the wallet was loaded successfully, "rescanning" means that it's now looking for wallet-related transactions in your node's blockchain.
That may take hours depending on the hardware.

Yes.
See the release note for version 22.0, here: github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-22.0.md

I think the lack of info is partly my fault because I've suggested him to use that command to get the 'change address' parent descriptor while not informing him that the command is only available to the latest version (v22.0).

That's not a problem if you have a backup of the wallet.dat file; I suppose you already have a backup, because who doesn't.

These are all Bitcoin exclusive clients while the description in the OP has detail like "staking" that is unrelated to those Bitcoin clients and the Bitcoin.
What do you mean by "merged over from Electrum" and then "that was Bitcoin Core"?

Seems like you're remembering common crypto terms that are appearing over the internet and mixing them with the actual data that you can recall.
Have you recovered to some extent?

For starters, try to read this thread and see if you can find something similar from the list: [overview] Recover Bitcoin from any old storage format
But do not trust your "guts" when it tells you that something is familiar, find actual data.

Is that file untouched?
Because I highly doubt that it's from 2012 for having SegWit-related stuffs.

You haven't mentioned the name of the client/wallet that you've used, so no one can really tell if it's necessary to upgrade.

From which source have you found out that the old version of bitaddress used SHA1 to produce prvKey from the entropy, their changelog?
This: github.com/pointbiz/bitaddress.org/blob/master/CHANGELOG.txt#L108 ?

If so, that's only for the checksum of the html file, not the key generation.

Ian Coleman's key compression tool will not accept HEX Private keys, only WIF and BIP38 PrvKeys.

As an alternative, you can use brainwallet tool, but same as PawGo's suggestion: use it offline.

Webpage (do not use it online): https://brainwalletx.github.io/#generator
Download ZIP, extract it and transfer the whole folder to your offline PC, run "index.html" using your browser.

To use it for converting HEX into WIF prvKey:

• In 'Get Address From' line, click "Secret Component" button.
• In 'Secret Exponent' line, paste your 64 digit hex.
• In 'Address QR Code', click "Toggle Key" and the private key WIF will be displayed above the address.
• You can toggle between compressed and uncompressed WIF by clicking the bottons with the same name in "Point Conversion' line.
• Copy both Compressed (starts with 'K' or 'L') and Uncompressed (starts with '5') WIF and import them to your preferred wallet.