I'm afraid that this isn't Bitcoin-related in terms of technical support.
Usually, those hackers and are just using Bitcoins as the "ransom money" because it's widely used and with the help of "mixing services", transactions could become anonymous.
The ransomware malware and viruses however, aren't directly linked to Bitcoin's protocols.

I'd suggest to shut it down (don't do anything) until you get someone who's knowledgeable on this (there's a couple of OS-related automated backups that can undo this that can be affected by the virus/malware if stayed active).
Most users here wont be able to help you with your issue, you really need to consult a good Computer Technician for this.

The only wallet that I know that's getting errors with OLD "Backup Phrase" (not SEED), showing "non-spendable" than "watch-only";
and requesting private keys in every send attempts than not displaying the send button... is:
Blockchain.com's (not a real) wallet.

I'm 70% sure that it's blockchain.info's (not ) wallet.
Luckily, they have a sublink that enables the users with old recovery backup phrase to restore into a new wallet.
Here it is: https://login.blockchain.com/wallet/forgot-password (the same link if you forget your password, but it accepts old seeds).

Going to the nearest (& reputable) computer repair center is way more cheaper and safer than paying that amount or asking someone from the net.
Unless the PC is on the technician's hands, you'll get more inconsistencies than results.

Alternatively, just wipe it out.
If you've lost your wallets, an offline backup or written seed & private keys are good enough to decide a "zero-fill" the disk.
Is there something worth recovering from that PC that's keeping you from wiping the disk or are you looking for a pure "back at you" attempt?

I dunno, but this will surely be moved to Bitcoin discussion after a while.

On-topic: Why don't you ask him instead: satoshi? What will be the response?
You see, this kind of topic are only designed to be a spam-fest thread, there's no point on "asking" these types of questions.
Finding speculations and articles is much more reasonable, IMO.

As far as I know, there's locked thread with the same topic somewhere in the Bitcoin Discussion board.
If I came across it, I'll update this reply with the link.

You can try https://bitcoinstrings.com/, but it's totally converted to text and the blocks' data aren't displayed.
OP_return data were translated too, just ignore them or highlight all the "Mined by" lines then search from other source about which blocks are included in that particular blkXXXXX.dat number.
Sort it out, and you might find what you need.

However, the site's updates were not that frequent (about daily to four times a week)

Last time I checked Rx580s on CoinCalculators, the result was almost the same as whattomine's: mining Ethash didn't have much benefit than Cryptonight either.
The difference is just their "suggested" coins computed based on the site's own formula.

It must be something to with: Difficulty, Block Time, Block Reward, Price in USD, Price Change(24h) and other parameters that they've considered, not just the Algorithm.
On Whattomine, you can also configure the list of exchanges where your final list will be based.

TL;DR: Both have different methods or "formula" on suggesting most profitable coins.

Great, marketplace's yearly membership fee will be more expensive than my antivirus' licence.

The idea is quite good, with the right implementation rules and adjusted reasonable fee, I can agree to this.
But somehow, we're gonna lose some "gift cards" sales since any possible buyer must pay $100 before he can buy a $50 Bitmain Coupon.

---

So, we're gonna be needing a membership fee and another for posting a thread?
Bitcointalk will going to be a forum with a multi-million dollar revenue with this, theymos will gonna like this.
With that budget, Epochtalk will be up in no time.

Before showing the white flag, can you tell us some (non-sensitive) information regarding the wallet,
For more efficient deductions:

• Where did you downloaded that portable Electrum?
• Do the original wallet's bitcoin addresses starts with "3", "1" or "bc1"?
• Do the newly restored wallet's addresses start with the same character?

Also, double check on any blockexplorer if the addresses with balance reflect the same transactions as your "inbound" transactions.

---

I'm currently downloading Electrum Portable v3.1.3 to try to reproduce this.
-edit-
Works just fine, definitely not a bug of Electrum Version 3.1.3 Portable.

Just follow this:
Get a flash drive, copy an Electrum installer/stand-alone executable and the Electrum data directory
[C:\Users\(Your_Username)\AppData\Roaming\Electrum\wallets] for Windows.
Paste it in the same directory of your Laptop's drive, then install the installer or Store the stand-alone executable.
This will create a "clone" of your whole Electrum from the online PC which includes the transaction history and settings.
Now, delete the standard wallet from the online PC and create a watch-only wallet based from its extended/master public key.

Works just fine to me, but there's a "safer" way to do this:
http://docs.electrum.org/en/latest/coldstorage.html

No, but everytime you import, sign and save an unsigned tx, it will be saved in the history and will deduct the transaction's inputs from the last known balance of the wallet displayed as a local transaction.

I know right?
Plus, the articles cycles on how brilliant lenovo's "AR Vision" is, not on how they will utilize Credit's blockchain.
They just mentioned "expertise" which for me it sounds like that the partnership only involves the team, not the actual coins that they are trying to market with this.

By the way, are you vit05's acquaintance ?

---

Also, I've check lenovo's lenovo-AR site and I didn't find any news regarding partnership with any Digital currency.
If ever it will be used "internally" as the news said, will it benefit the hodlers? No, ryt?

There is no such thing as "temporary address", if it came from Armory's "receive bitcoins tab", that address belongs to your wallet.
If Bitref (a simple blockexplorer) displays that the address has balance, you have successfully received your bitcoins.

The problem is on your client's side.
Where did you get that client, from https://btcarmory.com/ or https://www.bitcoinarmory.com/?
The second one is an outdated source.

Wait, which one of the two did you contact?
The OP seems unclear to me, "I've sent bitcoin cash to core address" is this a deposit or withdrawal transaction?

If it was from Sportsbook to your 3rd party wallet, you have to contact the 3rd party wallet.
If it was from the 3rd-party wallet to Sportsbook, contact the sportsbook's support.

By the way I'm seeing this is: there's no reason for them to keep your funds given with a valid reason.
Unless in some extremely security-conscious centralized wallets.

Nope, it's designed to be a bot-net tool to use the slaves more efficiently than just the what-a-waste DDOS attack.
Then someone created a new type of API for website or app monetization based on the original code...

Actually, it's the other way around.

(LoL) if your boss finds out, you're so fired right now.

Does those addresses came from a seed? I mean, was that a standard wallet or imported (prv keys)?
If it is Hierarchical Deterministic (w/ a seed), you can easily make a Watch-Only ElectrumG wallet using the extended public key of your Electrum wallet.

Do these steps:
[1] Go to your Electrum Wallet, click Wallet, Select Information, then copy your extended public key (xpubXXXXXXXXXXXXXXX).
[2] Open ElectrumG and create a new wallet, select Standard wallet, select Use a master Key then paste your electrum's extended public key.
[3] Hit next, add a password or skip, Hit next.

It will create a non-spendable Watch-only BitcoinGold addresses-equivalent to your Electrum BTC addresses.
No need to convert them one by one.

T/N: Master/Extended public keys can't be used to spend the addresses' funds.

---

If not, try this tool: https://ledgerhq.github.io/btg-convert/
This and jackg's shared link both worked on my end, also, both requires javascript to work.

Do you realize that the OP was from 2014 and only brought up by a newbie?
Anyways, the newbie's question seems valid.

---

The user's last login was December 30, 2015, 05:17:36 AM, must be busy somewhere else.
Next time, don't hesitate to open a new topic regarding ASIC manufacturing business, forum members (& scammers) will not hesitate to help you depending on your given info.

Luckily, he left an email address on his profile: marshall@finalhash.com, you might be able to contact him through email.

If your funds are in one of your address as you can see in the blockexplorer, there will be no problem unless there's "something" in that Electrum FuturoCoin fork.

Better make a backup in case of emergency:
To make a backup (paper-wallet), simply get the Private key of that particular address by: showing the address tab(view->address tab), right click on the funded address and select "Private Key", Enter your password then copy its private key and the address to a piece of paper.

You simply cannot "see" your FTO coins because of an unknown issue of that wallet but your funds are there as long as the blockexplorer displays the last txo as 'unspent' or your address has balance.

Better start praying for confirmations.... just joking.
It (tx 60f2e9148c2c21f2aa23fbbba188693436e0996f03985c8f73c57445ba67478c) already have 7 confirmations as of now and counting.
That's roughly an hour of horror  

Scroll down to the bottom of the page, look at the lower-left side and there should be a super-small buttons that looks like this: move topic | lock topic

Or read this thread for steps by steps tutorial: Lock Thread(s) After Getting Enough Replies.

This forum board is for the official Electrum version.

As far as I know, FuturoCoin (FTO) have its own Electrum fork.
Where did you downloaded your electrum? If its addresses starts with "F", that should be fine unless the wallet is a scam after all (its gitHub source was still hidden)

There's couple of similar possible reasons with the official version, namely:
1. Your Electrum client isn't synced to any server, check the lower right icon if it's red(disconnected) or green(connected).
2. Try to wait for at least 1 confirmation and check if the tx went through.

For others, you should ask their own forum or official thread.

I have!
This was made to promote OP's blockchainmuffin site.

---

Newbies' will appreciate the help but, make a little more research before adding an article to your site.
Like this one which could lead beginners out of Bitcointalk to actually mine SiaCoin using their GPU miners.