BlackWallet Hacked: Warns Stellar Community Not to Log In to Site (bitcoinmagazine.com)

On January 13, an unknown hacker(s) hijacked the DNS server for BlackWallet.co, a web-based wallet for the Stellar Lumens cryptocurrency, and redirected it to their own server.Security researcher Kevin Beaumont, who analyzed the code, said, “The DNS hijack of Blackwallet injected code, if you had over 20 Lumens it pushes…

Bitcoin

On the 9th birthday of Bitcoin, I’d urge everyone who hasn’t yet read Satoshi’s 9-page* white-paper to read it. It’s brilliantly written, and with a lot of newbie’s coming in to the community, this is a must read!

Link to the white paper is here – https://bitcoin.org/bitcoin.pdf

*9th page is the reference page. so really, it's only 8 pages.

I was just re-reading it, and i really enjoy Satoshi's outright sass in it. For example, when talking about 'greedy attackers' :

"He ought to find it more profitable to play by the rules, such rules that favour him with more new coins than everyone else combined, than to undermine the system and the validity of his own wealth."

and you can see that he was aware and conscious about node's being able to store the blocks with commonly found hardware:

"A block header with no transactions would be about 80 bytes. If we suppose blocks are generated every 10 minutes, 80 bytes * 6 * 24 * 365 = 4.2MB per year. With computer systems typically selling with 2GB of RAM as of 2008, and Moore's Law predicting current growth of 1.2GB per year, storage should not be a problem even if the block headers must be kept in memory."

happy reading!

EDIT – I've unknowingly sort of delved into the block-size/scaling debate in the last bit above. Not my intention. Bitcoin itself has evolved from the original white paper. Satoshi himself had found ways to improve on top of the white paper during the days he was active. My point here is to appreciate the great invention and truly understand it as told my the author/creator himself 🙂

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Bitcoin – The Currency of the Internet

My gift to the community… Enjoy.

Humbly I gift my eBook to the entire community for free. No strings attached. May this information help you help your loved ones and yourself to prepare for 2018. Feel free to share it with whoever you think could benefit.

"Practical Guide to Bitcoin Investment 2018 – Helping the Early Adopters" Full PDF uploaded to docdroid. Enjoy the read. http://docdro.id/6acfHMo

submitted by /u/JamesF0
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Bitcoin – The Currency of the Internet

Day 5: I will post this guide regularly until available solutions like SegWit & order batching are mass adopted, the mempool is empty once again, and transaction fees are low. User demand from this community can help lead to some big changes. Have you joined the /r/Bitcoin SegWit effort?

SUMMARY

Segregrated Witness (SegWit) was activated on the Bitcoin network August 24, 2017 as a soft fork that is backward compatible with previous bitcoin transactions (Understanding Segregated Witness). Since that time wallets and exchanges have been slow to deploy SegWit, some admitting in December 2017 that they have not even started work. If users demand SegWit now it will temporarily releive the transaction backlog while bigger solutions like Lightning are developed.


TODAY's NEWS/DEVELOPMENTS/VICTORIES


MEMPOOL/SEGWIT STATISTICS


BACKGROUND

Subhan Nadeem has pointed out that:

If every transaction in the Bitcoin network was a SegWit transaction today, blocks would contain up to 8,000 transactions, and the 138,000 unconfirmed transaction backlog would disappear instantly. Transaction fees would be almost non-existent once again.

A few thousand bitcoin users from /r/Bitcoin switching to making their next transactions SegWit transactions will help take pressure off the network now, and together we can encourage exchanges/wallets to rapidly deploy SegWit for everyone ASAP. Let's make 80%+ SegWit happen fast. You can help by taking one or more of the action steps below.


ACTION STEPS

  1. If your favorite wallet has not yet implemented SegWit, kindly ask them to do so immediately. In the meantime start using a wallet that has already implemented SegWit.
  2. If your favorite exchange has not yet implemented SegWit, try to avoid making any further purchases of bitcoin at that exchange and politely inform them that if they do not enable SegWit within 30-days they will lose your business. Sign-up for an account at a SegWit deployed/ready exchange now and initiate the verification process so you'll be ready to bail
  3. Help educate newcomers to bitcoin about the transaction issue, steer them towards SegWit wallets from day one, and encourage them to avoid ever purchasing bitcoin through non-SegWit ready exchanges that are harming bitcoin.
  4. Spread the word! Conact individuals, websites, etc that use bitcoin, explain the benefits of SegWit to everyone, and request they make the switch

IMPORTANT NOTE: The mempool is currently still quite backlogged. If you are a long-term holder and really have no reason to move your bitcoins at this time, wait until the mempool starts to clear and transaction fees go down before moving your bitcoins to a SegWit address or SegWit friendly exchange.


SELECTED TOP EXCHANGES BY SEGWIT & BATCHING STATUS

Exchange Segwit Status Batching Status
Binance NOT READY Yes
Bitfinex Ready ?
Bitonic Ready ?
Bitstamp Deployed Yes
Bittrex ? Yes
Coinbase/GDAX NOT READY No
Gemini Ready No
HitBTC Deployed Yes
Huboi ? ?
Kraken Ready Yes
LocalBitcoins Ready ?
OKEx ? ?
Poloniex ? Yes
QuadrigaCX Deployed Yes
Shapeshift Deployed No

Source 1

Source 2


SELECTED WALLETS THAT HAVE SEGWIT ALREADY

Make sure you have a SegWit capable wallet installed and ready to use for your next bitcoin transaction

SegWit Enabled Wallets Wallet Type
Ledger Nano S Hardware
Trezor Hardware
Electrum Desktop
Armory Desktop
Edge iOS
GreenAddress iOS
BitWallet iOS
Samourai Android
GreenBits Android
Electrum Android

FAQs

If I'm a HODLer, will it help to send my BTC to a SegWit address now?

  • No, just get ready now so that your NEXT transaction will be to a SegWit wallet. Avoid burdening the network with any unneccessary transactions for now.

Can you please tell me how to move my bitcoins to SegWit address in Bitcoin core wallet? Does the sender or receiver matter?

  • The Bitcoin core wallet does not yet have a GUI for its SegWit functionality. Download Electrum v3.0.3 to generate a SegWit address.

    A transaction between two SegWit addresses is a SegWit transaction.

    A transaction sent from a SegWit address to a non-SegWit address is a SegWit transaction.

    A transaction sent from a non-SegWit address to a SegWit address is NOT a SegWit transaction. You can send a SegWit Tx if the sending address is a SegWit address.

    Source

What wallet are you using to "batch your sends"? And how can I do that?

  • Using Electrum, the "Tools" menu option: "Pay to many".

    Just enter your receive addresses and the amounts for each, and you can send multiple transactions for nearly the price of one.

Why doesn't the Core Wallet yet support SegWit?

  • The Core Wallet supports SegWit, but its GUI doesn't. The next update will likely have GUI support built-in

Why isn't a large exchange like Coinbase SegWit ready & deployed when much smaller exchanges already are? Why do they default to high fees? Where is the leadership there?


SEGWIT BLOG GUIDES


PREVIOUS DAY'S THREADS

There's lots of excellent info in the comments of the previous threads:

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Bitcoin – The Currency of the Internet

Community. We need to upvote this post so no one else loses money!

This is a seriously important topic everyone is ignoring. Copay / Bitpay wallet has been having problems with their servers. In long story short. TONS of transactions have just gone missing from users across the world. If you go onto the copay help and support forum, there's tons of new topics of people losing funds or them being in limbo in copays system. I have lost over 3k and support is ignoring everyone's tickets… How is no one talking about this ?

TO BE CLEAR : COPAY IS USED AS AN INTERMEDIARY BEFORE IT IS SENT TO COLD STORAGE.

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Bitcoin – The Currency of the Internet