A Long-Secret Bitcoin Key Is About to Finally Be Revealed

A Long-Secret Bitcoin Key Is About to Finally Be Revealed

A Long-Secret Bitcoin Key Is About to Finally Be Revealed
 

No, it's not the identity of Satoshi Nakamoto, it's a private key the cryptocurrency's creator entrusted to several bitcoin developers that activates the protocol's so-called "alert system," once used to flash a text warning to those running the software in case something happened that could impact the security of their funds.

If you didn't know bitcoin had a warning system like this, that's because it was retired in 2016 due to security concerns and frequent confusion about its use.

"The alert system was a frequent source of misunderstanding about the security model and 'effective governance,'" well-known Bitcoin Core contributor Greg Maxwell wrote in a public email from September 2016.

In short, some in the bitcoin community thought it could be used to change that network rules that unite users, which isn't really the case. For example, a BitcoinJ developer once wanted to use the key to control fees, while a Bloq staffer pressed for Bitcoin Core developers to use the key to change the network's mining difficulty.

Plus, developers were worried that if the wrong person got ahold of the key, they could broadcast false messages or potentially cause panic.

As such, to some, the reveal – being undertaken by Bitcoin Core contributor Bryan Bishop – is a long time coming.

"Folks, it's going to be an interesting show," Bishop tweeted, followed by a string of tweets cryptographically proving he's in possession of the secret key, without fully revealing it quite yet.

The reveal is the final step to destroying the system. After Bitcoin Core developers released new code in 2016 without the alert system, in January 2017, a "final alert message" was broadcast, which – by law of the code – made that message unable to be overridden by any other messages in the future.

Still, the private key needs to be displayed publicly so there's no possibility of reputation attacks against those developers that hold it.

Bishop told CoinDesk he plans to release it soon, though he's not sure about the exact date, adding:

"It's time. I'm thinking about releasing the private key early July at Building on Bitcoin, though it's not finalized yet."

 

Danger for altcoins

Still, it isn't as easy as it sounds.

 

Revealing the key is potentially dangerous for any cryptocurrencies that used an older version of bitcoin's code to create their cryptocurrency and have not disabled the alert key mechanism in their own code.

"If the copycats have not disabled the alert system, nor changed the alert key [public key], and if they have not sent what's known as a final alert message, then once the [bitcoin] keys are released, anyone will be able to send alerts on those [other] networks," Bishop told CoinDesk.

It's happened before actually. Litecoin creator Charlie Lee recounted on Twitter just last week how the lesser-known Feathercoin protocol (which copied litecoin's code) received litecoin's alert about upgrading to the latest litecoin client.

And while that isn't a particularly nefarious example, Bishop said, controlling what alert messages are sent on various networks "sounds dangerous."

As such, in Maxwell's 2016 email, he said he had spent and would continue spending some time searching through other cryptocurrency codebases. If they were found to contain the alert key code from bitcoin, he vowed to notify those projects to remove that code.
 

Maxwell concluded:

 

"At some point after that, I would then plan to disclose this private key in public, eliminating any further potential of reputation attacks and diminishing the risk of misunderstanding the key as some special trusted source of authority."

Reputation on the line

But, two years later, neither Maxwell – nor any other Bitcoin Core developer – has revealed the key.

"It's something we have wanted to release for a few years. Nobody took any action, though," Bishop said.

But by now, the projects susceptible to this vulnerability have had time to remove the code and upgrade. Although, some of those projects might not have developers anymore, even though users and still trading and using the cryptocurrencies, which could mean there's been no update.

That said, Bishop's giving these projects one last chance by sending messages on Twitter and through other channels.

Adding pressure that could prioritize the reveal, though, is that Bishop and others are worried about attacks on their reputation. For instance, if the private key was compromised and used to sign a message with bad intentions, it could be blamed on one of the Bitcoin Core developers who's known to have the key.

"Nobody knows the full list of people that have access to the private key. A message could be signed by the private key, and the secrecy is a liability because some of the people who have the key are known in public to have the key," Bishop said, pointing to the fact that those with the key that are unknown could blame people who are known to hold the key for nefarious messages.

Bishop recently used the alert key (without revealing it) to sign a simple text message that he then tweeted out, displaying how it could be used to trick users or cause confusion within the community.

Plus, he told CoinDesk, there are other long-standing vulnerabilities within the alert key setup that he plans to disclose when he reveals the key to the public.
 

As such, Bishop concluded:

 

"It would be better if the key was released."

 

 

Author Alyssa Hertig Jun 26, 2018 at 04:00 UTC

David Ogden – Http://markethive.com/david-ogden

Bitcoin Gold Launches Today

Bitcoin Gold Launches Today

Bitcoin Gold Launches Today

After weeks of preparation, Bitcoin Gold (Bgold; BTG) is finally launching today, November 12, 2017.
 

Bitcoin Gold is the second project to fork away from the Bitcoin blockchain to create a new coin this year; on August 1, Bitcoin Cash (Bcash) was the first. Where Bcash attempted to offer an on-chain scaling solution by increasing Bitcoin’s block size limit (while removing the Segregated Witness code), Bgold is an attempt to counter Bitcoin’s mining centralization.
 

The most important difference between Bitcoin and Bitcoin Gold is a new proof-of-work mining algorithm. Instead of SHA256, the new coin uses the memory-hard Equihash proof-of-work function that’s also used in the privacy-focused altcoin Zcash. This means that specialized ASIC hardware that has come to dominate Bitcoin’s mining ecosystem will not be able to mine Bgold.
 

Although Bgold is launching this weekend, the fork “officially” occurred on October 25. Anyone who held bitcoin (BTC) on that day (specifically, when Bitcoin block 491406 was mined) will have an equivalent amount of BTG attributed to their private keys. These private keys can be imported into a dedicated Bgold wallet, which, starting tomorrow, will allow users to spend the coins. (But note that this does not come without risks and tradeoffs: If you’re not sure what you’re doing, it’s best to ignore BTG until you do. For more information also see this article.)
 

Block 491407 on the Bgold blockchain will be the first block to deviate from the Bitcoin protocol. In other words, this will be the first block where Bgold splits off to become its own currency. However, somewhat controversially, the first 8000 blocks will be privately mined by the Bgold team. Only after these 8000 blocks will Bgold’s mining difficulty ramp up to normal levels, and will anyone be allowed to mine the coin. The resulting 100,000 BTG worth of block rewards will pay for project development and more. (For more details, see the Bitcoin Gold roadmap.)

 

Other changes implemented by Bitcoin Gold are mostly to ensure a smooth split away from Bitcoin. This includes a new difficulty re-adjustment algorithm named “DigiShield” that adjusts the mining difficulty each time a block is found — instead of once every two weeks. Bgold also includes strong replay protection, ensuring that no users spend BTC when they mean to spend BTG, and vice versa. Additionally, BGold implemented a new address scheme, preventing users from spending BTC to BTG addresses and vice versa.

 

Bitcoin Gold will be supported by a relatively large number of exchanges, including major players like Bitfinex, OKex and HitBTC. Several of these exchanges are effectively supporting BTC/BTG trading already through futures markets. Ignoring an initially inflated price, these futures have traded at around 0.02 BTC in recent weeks, with a notable surge to about 0.042 BTC over the past few days. If this holds up, 1 BTG would be worth almost $250, and Bgold would immediately become a top-5 altcoin on websites like coinmarketcap.com.
 

For more information on Bitcoin Gold, see Bitcoin Magazine’s earlier article on this project.

Author: Aaron van Wirdum

 

Posted by David Ogden Entrepreneur
David Ogden Cryptocurrency Entrepreneur

 

David Ogden – Http://markethive.com/david-ogden