How to import and export Bitcoin private keys Get ...

Kraken finds way to extract private keys from a Trezor hardware wallet given 15 minutes of physical access to the device. Finding is confirmed as being good for bitcoin!

Kraken finds way to extract private keys from a Trezor hardware wallet given 15 minutes of physical access to the device. Finding is confirmed as being good for bitcoin! submitted by jstolfi to Buttcoin [link] [comments]

How to extract the private keys from the Bitcoin.com wallet's recovery phrase?

Hey guys,
I've just explained the basics of Cryptos to someone over the weekend and we used the Bitcoin.com wallet to make some transactions, because it's available on android and iphone and pretty simple to use.
I explained her how important it is to save your private keys. Turns out I couldn't figure out how to extract them from the wallet. It gives me the 12 word phrase.
Can someone post me instructions on how to extract the private key from the 12 word seed please?
The coinomi wallet for android has this offline browser tool that allowed me to extract all private keys from the recovery phrase. But that wallet is not available for the iphone, and I'm sure there must be a way to extract the private keys from the Bitcoin.com wallet.
thanks for the help!
edit:
Thanks for all your answers. I understand now that the recovery phrase is all I need, and a BIP39 recovery phrase can be imported to other compatible wallets to restore my funds there.
submitted by grmpfpff to btc [link] [comments]

@WearableDesign Extracting the Private Key from a TREZOR Bitcoin Wallet with a $70 Oscilloscope

@WearableDesign Extracting the Private Key from a TREZOR Bitcoin Wallet with a $70 Oscilloscope submitted by TwoBitPirate to TREZOR [link] [comments]

@WearableDesign Extracting the Private Key from a TREZOR Bitcoin Wallet with a $70 Oscilloscope

@WearableDesign Extracting the Private Key from a TREZOR Bitcoin Wallet with a $70 Oscilloscope submitted by TwoBitPirate to TREZOR [link] [comments]

How to extract the private keys from the Bitcoin.com wallet's recovery phrase? /r/btc

How to extract the private keys from the Bitcoin.com wallet's recovery phrase? /btc submitted by HiIAMCaptainObvious to BitcoinAll [link] [comments]

I have an extended private key from mycelium android wallet, how do I extract individual private keys for claiming my bitcoin cash?

submitted by box1820 to CryptoMarkets [link] [comments]

How do I extract my private key from Android Bitcoin Wallet to import it in Mycelium?

submitted by geosmin to Bitcoin [link] [comments]

Bitcoin mentioned around Reddit: How to extract private keys from dash mobile wallet backup? /r/dashpay

Bitcoin mentioned around Reddit: How to extract private keys from dash mobile wallet backup? /dashpay submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Extracting the Private Key from a TREZOR (hardware bitcoin wallet) with a 70 $ Oscilloscope

tldr; its possible to monitor the power utilization of the device with an o-scope and read the bits of the private key out of the device. This is fixed in the most current firmware.
https://jochen-hoenicke.de/trezor-power-analysis/
submitted by alltheredditforme to hardwarehacking [link] [comments]

Is it possible to extract the private key from a wallet.dat without the passphrase if encrypted? /r/Bitcoin

Is it possible to extract the private key from a wallet.dat without the passphrase if encrypted? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

How to extract a private key from a very old wallet.dat /r/Bitcoin

How to extract a private key from a very old wallet.dat /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Opening and extracting seed/private keys from a Blockchain Wallet v3 Backup /r/Bitcoin

Opening and extracting seed/private keys from a Blockchain Wallet v3 Backup /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

It's beginning to feel a lot like 2017. Some useful reminders and advice for new comers.

Hype and increasing prices will undoubtedly attract new investors, HODLers, and gamblers. Regardless of how long you've been in crypto, below are a few pieces of information (or reminders) you should consider.
  1. We're still early. Cryptocurrency, including bitcoin, is still in its infancy. Because of this, we will continue to see headlines of hacks, exchange closures, big name investors coming into the space, major institutional adoption, and everything in between. Until crypto is regulated (for better or worse) and even after, there will be bad actors attempting to steal your cryptocurrencies. To that end, think twice when hearing about 'deals' or investments that seem too good to be true. They probably are.
  2. Protection. I often see questions regarding the storage of cryptocurrencies. Not to oversimplify, but as a user, you have ~3 choices to store your cryptocurrency. In order of most secure to least secure:
    1. Cold Storage - From wikipedia: Cold storage refers to storing Bitcoins/Cryptos offline and spending without the private keys controlling them ever being online. This resists theft by hackers and malware, and is often a necessary security precaution especially dealing with large amounts of Bitcoin. If you aren't comfortable manually storing your private key, physical hardware wallets are your best alternative. When possible, buy direct from the manufacturer to avoid any tampering to your new device.
      1. https://trezor.io/
      2. https://www.ledger.com/
    2. Hot Wallets - From investopedia: The difference between a hot wallet and a cold wallet is that hot wallets are connected to the internet, while cold wallets are not. Hot wallets can be installed onto your mobile device and/or your web browser. Similar to cold storage, these hot wallets will 'store' your crypto and will be accessed to send/receive tokens, execute smart contracts, and conduct other transactions. There are many options to choose from, but MetaMask is as close to an industry standard as it comes, and the developer has recently implemented an ERC-20 token swap function. Again, download directly from the developer if you can.
      1. https://metamask.io/
    3. Exchanges - Exchanges certainly have their own purpose, most notably as an on and off ramp for your fiat currency (e.g., US Dollar, etc). However, when you read headlines like "Bitcoin Hacked for 10 million dollars!" what they usually mean is, a centralized exchange that holds users' cryptocurrencies was hacked and bitcoin was extracted from the exchange's storage. For this reason, exchanges are considered to be less safe than your Hot Wallet and Cold storage alternatives.
  3. Don't be greedy. This is easier said than done, and many veteran traders have learned this the hard way -- some still haven't learned. When prices are only going up, you're going to feel like a million bucks. But things dont go up forever. Ever. (Unless it's the Fed's balance sheet.. har har). Point being, it's okay to take profits along the way up. I guarantee you'll have an opportunity to re-buy those same tokens at a cheaper price, and you'll enjoy them even more the second time around.
  4. Don't spend more than you can afford. Hopefully this goes without saying, but the crypto space is extremely volatile. It is not uncommon to lose your entire investment with just one wrong token/ICO/scam. To that end; just use your common sense. It sounds easy, but when you're making money, sometimes it's hard to see the cliff at the end of the road.
  5. Keep learning. I joined the crypto space because I saw an opportunity to make money. It's been a wild ride, and I've learned a lot more than I've gained (from a monetary perspective). What i didn't expect to happen, was to open pandora's box when it comes to what Bitcoin (specifically) aimed to solve. My thirst for knowledge only expanded when I learned of the opportunity space Ethereum was trying to fill. Compound that with the immutability of blockchain technology, DeFi, smart contracts, data oracles, (and the list goes on); now I'm completely hooked. It's clear to me that blockchain will revolutionize the way we function on the global scale. But many are just now beginning to learn about bBitcoin, and we're ahead of the curve. Which leads me back to point number 1; we're still early.
Sorry for rambling on here; I'm sure more veteran HODLers have already X'd out of this post, which is fine. They likely don't need this information as they have learned these same tips along their own journeys. But for newcomers to the space, I wish I had this foundational knowledge from the get go. Don't be afraid to ask questions on this sub. With the recent implementation of MOON tokens (this is a whole 'nother topic), I've personally noticed more downvotes than normal. But awareness and understanding is critical to adoption, so don't be turned off if you don't get an answer to your questions immediately. There is a wealth of knowledge scattered across the internet, and still a lot of smart people on reddit who are willing to help.
submitted by myhaxdontwork to CryptoCurrency [link] [comments]

Is anyone else having issues withdrawing bitcoin?

I tried to withdraw all my bitcoin from nash, but was unable to. Sounds like (from their support) that this is a known issue. I still haven't heard more from them after their initial response a couple days ago. Is anyone else seeing this problem?
Update: as of this morning (monday june 8), my transfer seems to have successfully posted to the mempool. I appreciate Nash's quick responses to this!
submitted by fresheneesz to Nash [link] [comments]

Proposal: The Sia Foundation

Vision Statement

A common sentiment is brewing online; a shared desire for the internet that might have been. After decades of corporate encroachment, you don't need to be a power user to realize that something has gone very wrong.
In the early days of the internet, the future was bright. In that future, when you sent an instant message, it traveled directly to the recipient. When you needed to pay a friend, you announced a transfer of value to their public key. When an app was missing a feature you wanted, you opened up the source code and implemented it. When you took a picture on your phone, it was immediately encrypted and backed up to storage that you controlled. In that future, people would laugh at the idea of having to authenticate themselves to some corporation before doing these things.
What did we get instead? Rather than a network of human-sized communities, we have a handful of enormous commons, each controlled by a faceless corporate entity. Hey user, want to send a message? You can, but we'll store a copy of it indefinitely, unencrypted, for our preference-learning algorithms to pore over; how else could we slap targeted ads on every piece of content you see? Want to pay a friend? You can—in our Monopoly money. Want a new feature? Submit a request to our Support Center and we'll totally maybe think about it. Want to backup a photo? You can—inside our walled garden, which only we (and the NSA, of course) can access. Just be careful what you share, because merely locking you out of your account and deleting all your data is far from the worst thing we could do.
You rationalize this: "MEGACORP would never do such a thing; it would be bad for business." But we all know, at some level, that this state of affairs, this inversion of power, is not merely "unfortunate" or "suboptimal" – No. It is degrading. Even if MEGACORP were purely benevolent, it is degrading that we must ask its permission to talk to our friends; that we must rely on it to safeguard our treasured memories; that our digital lives are completely beholden to those who seek only to extract value from us.
At the root of this issue is the centralization of data. MEGACORP can surveil you—because your emails and video chats flow through their servers. And MEGACORP can control you—because they hold your data hostage. But centralization is a solution to a technical problem: How can we make the user's data accessible from anywhere in the world, on any device? For a long time, no alternative solution to this problem was forthcoming.
Today, thanks to a confluence of established techniques and recent innovations, we have solved the accessibility problem without resorting to centralization. Hashing, encryption, and erasure encoding got us most of the way, but one barrier remained: incentives. How do you incentivize an anonymous stranger to store your data? Earlier protocols like BitTorrent worked around this limitation by relying on altruism, tit-for-tat requirements, or "points" – in other words, nothing you could pay your electric bill with. Finally, in 2009, a solution appeared: Bitcoin. Not long after, Sia was born.
Cryptography has unleashed the latent power of the internet by enabling interactions between mutually-distrustful parties. Sia harnesses this power to turn the cloud storage market into a proper marketplace, where buyers and sellers can transact directly, with no intermediaries, anywhere in the world. No more silos or walled gardens: your data is encrypted, so it can't be spied on, and it's stored on many servers, so no single entity can hold it hostage. Thanks to projects like Sia, the internet is being re-decentralized.
Sia began its life as a startup, which means it has always been subjected to two competing forces: the ideals of its founders, and the profit motive inherent to all businesses. Its founders have taken great pains to never compromise on the former, but this often threatened the company's financial viability. With the establishment of the Sia Foundation, this tension is resolved. The Foundation, freed of the obligation to generate profit, is a pure embodiment of the ideals from which Sia originally sprung.
The goals and responsibilities of the Foundation are numerous: to maintain core Sia protocols and consensus code; to support developers building on top of Sia and its protocols; to promote Sia and facilitate partnerships in other spheres and communities; to ensure that users can easily acquire and safely store siacoins; to develop network scalability solutions; to implement hardforks and lead the community through them; and much more. In a broader sense, its mission is to commoditize data storage, making it cheap, ubiquitous, and accessible to all, without compromising privacy or performance.
Sia is a perfect example of how we can achieve better living through cryptography. We now begin a new chapter in Sia's history. May our stewardship lead it into a bright future.
 

Overview

Today, we are proposing the creation of the Sia Foundation: a new non-profit entity that builds and supports distributed cloud storage infrastructure, with a specific focus on the Sia storage platform. What follows is an informal overview of the Sia Foundation, covering two major topics: how the Foundation will be funded, and what its funds will be used for.

Organizational Structure

The Sia Foundation will be structured as a non-profit entity incorporated in the United States, likely a 501(c)(3) organization or similar. The actions of the Foundation will be constrained by its charter, which formalizes the specific obligations and overall mission outlined in this document. The charter will be updated on an annual basis to reflect the current goals of the Sia community.
The organization will be operated by a board of directors, initially comprising Luke Champine as President and Eddie Wang as Chairman. Luke Champine will be leaving his position at Nebulous to work at the Foundation full-time, and will seek to divest his shares of Nebulous stock along with other potential conflicts of interest. Neither Luke nor Eddie personally own any siafunds or significant quantities of siacoin.

Funding

The primary source of funding for the Foundation will come from a new block subsidy. Following a hardfork, 30 KS per block will be allocated to the "Foundation Fund," continuing in perpetuity. The existing 30 KS per block miner reward is not affected. Additionally, one year's worth of block subsidies (approximately 1.57 GS) will be allocated to the Fund immediately upon activation of the hardfork.
As detailed below, the Foundation will provably burn any coins that it cannot meaningfully spend. As such, the 30 KS subsidy should be viewed as a maximum. This allows the Foundation to grow alongside Sia without requiring additional hardforks.
The Foundation will not be funded to any degree by the possession or sale of siafunds. Siafunds were originally introduced as a means of incentivizing growth, and we still believe in their effectiveness: a siafund holder wants to increase the amount of storage on Sia as much as possible. While the Foundation obviously wants Sia to succeed, its driving force should be its charter. Deriving significant revenue from siafunds would jeopardize the Foundation's impartiality and focus. Ultimately, we want the Foundation to act in the best interests of Sia, not in growing its own budget.

Responsibilities

The Foundation inherits a great number of responsibilities from Nebulous. Each quarter, the Foundation will publish the progress it has made over the past quarter, and list the responsibilities it intends to prioritize over the coming quarter. This will be accompanied by a financial report, detailing each area of expenditure over the past quarter, and forecasting expenditures for the coming quarter. Below, we summarize some of the myriad responsibilities towards which the Foundation is expected to allocate its resources.

Maintain and enhance core Sia software

Arguably, this is the most important responsibility of the Foundation. At the heart of Sia is its consensus algorithm: regardless of other differences, all Sia software must agree upon the content and rules of the blockchain. It is therefore crucial that the algorithm be stewarded by an entity that is accountable to the community, transparent in its decision-making, and has no profit motive or other conflicts of interest.
Accordingly, Sia’s consensus functionality will no longer be directly maintained by Nebulous. Instead, the Foundation will release and maintain an implementation of a "minimal Sia full node," comprising the Sia consensus algorithm and P2P networking code. The source code will be available in a public repository, and signed binaries will be published for each release.
Other parties may use this code to provide alternative full node software. For example, Nebulous may extend the minimal full node with wallet, renter, and host functionality. The source code of any such implementation may be submitted to the Foundation for review. If the code passes review, the Foundation will provide "endorsement signatures" for the commit hash used and for binaries compiled internally by the Foundation. Specifically, these signatures assert that the Foundation believes the software contains no consensus-breaking changes or other modifications to imported Foundation code. Endorsement signatures and Foundation-compiled binaries may be displayed and distributed by the receiving party, along with an appropriate disclaimer.
A minimal full node is not terribly useful on its own; the wallet, renter, host, and other extensions are what make Sia a proper developer platform. Currently, the only implementations of these extensions are maintained by Nebulous. The Foundation will contract Nebulous to ensure that these extensions continue to receive updates and enhancements. Later on, the Foundation intends to develop its own implementations of these extensions and others. As with the minimal node software, these extensions will be open source and available in public repositories for use by any Sia node software.
With the consensus code now managed by the Foundation, the task of implementing and orchestrating hardforks becomes its responsibility as well. When the Foundation determines that a hardfork is necessary (whether through internal discussion or via community petition), a formal proposal will be drafted and submitted for public review, during which arguments for and against the proposal may be submitted to a public repository. During this time, the hardfork code will be implemented, either by Foundation employees or by external contributors working closely with the Foundation. Once the implementation is finished, final arguments will be heard. The Foundation board will then vote whether to accept or reject the proposal, and announce their decision along with appropriate justification. Assuming the proposal was accepted, the Foundation will announce the block height at which the hardfork will activate, and will subsequently release source code and signed binaries that incorporate the hardfork code.
Regardless of the Foundation's decision, it is the community that ultimately determines whether a fork is accepted or rejected – nothing can change that. Foundation node software will never automatically update, so all forks must be explicitly adopted by users. Furthermore, the Foundation will provide replay and wipeout protection for its hard forks, protecting other chains from unintended or malicious reorgs. Similarly, the Foundation will ensure that any file contracts formed prior to a fork activation will continue to be honored on both chains until they expire.
Finally, the Foundation also intends to pursue scalability solutions for the Sia blockchain. In particular, work has already begun on an implementation of Utreexo, which will greatly reduce the space requirements of fully-validating nodes (allowing a full node to be run on a smartphone) while increasing throughput and decreasing initial sync time. A hardfork implementing Utreexo will be submitted to the community as per the process detailed above.
As this is the most important responsibility of the Foundation, it will receive a significant portion of the Foundation’s budget, primarily in the form of developer salaries and contracting agreements.

Support community services

We intend to allocate 25% of the Foundation Fund towards the community. This allocation will be held and disbursed in the form of siacoins, and will pay for grants, bounties, hackathons, and other community-driven endeavours.
Any community-run service, such as a Skynet portal, explorer or web wallet, may apply to have its costs covered by the Foundation. Upon approval, the Foundation will reimburse expenses incurred by the service, subject to the exact terms agreed to. The intent of these grants is not to provide a source of income, but rather to make such services "break even" for their operators, so that members of the community can enrich the Sia ecosystem without worrying about the impact on their own finances.

Ensure easy acquisition and storage of siacoins

Most users will acquire their siacoins via an exchange. The Foundation will provide support to Sia-compatible exchanges, and pursue relevant integrations at its discretion, such as Coinbase's new Rosetta standard. The Foundation may also release DEX software that enables trading cryptocurrencies without the need for a third party. (The Foundation itself will never operate as a money transmitter.)
Increasingly, users are storing their cryptocurrency on hardware wallets. The Foundation will maintain the existing Ledger Nano S integration, and pursue further integrations at its discretion.
Of course, all hardware wallets must be paired with software running on a computer or smartphone, so the Foundation will also develop and/or maintain client-side wallet software, including both full-node wallets and "lite" wallets. Community-operated wallet services, i.e. web wallets, may be funded via grants.
Like core software maintenance, this responsibility will be funded in the form of developer salaries and contracting agreements.

Protect the ecosystem

When it comes to cryptocurrency security, patching software vulnerabilities is table stakes; there are significant legal and social threats that we must be mindful of as well. As such, the Foundation will earmark a portion of its fund to defend the community from legal action. The Foundation will also safeguard the network from 51% attacks and other threats to network security by implementing softforks and/or hardforks where necessary.
The Foundation also intends to assist in the development of a new FOSS software license, and to solicit legal memos on various Sia-related matters, such as hosting in the United States and the EU.
In a broader sense, the establishment of the Foundation makes the ecosystem more robust by transferring core development to a more neutral entity. Thanks to its funding structure, the Foundation will be immune to various forms of pressure that for-profit companies are susceptible to.

Drive adoption of Sia

Although the overriding goal of the Foundation is to make Sia the best platform it can be, all that work will be in vain if no one uses the platform. There are a number of ways the Foundation can promote Sia and get it into the hands of potential users and developers.
In-person conferences are understandably far less popular now, but the Foundation can sponsor and/or participate in virtual conferences. (In-person conferences may be held in the future, permitting circumstances.) Similarly, the Foundation will provide prizes for hackathons, which may be organized by community members, Nebulous, or the Foundation itself. Lastly, partnerships with other companies in the cryptocurrency space—or the cloud storage space—are a great way to increase awareness of Sia. To handle these responsibilities, one of the early priorities of the Foundation will be to hire a marketing director.

Fund Management

The Foundation Fund will be controlled by a multisig address. Each member of the Foundation's board will control one of the signing keys, with the signature threshold to be determined once the final composition of the board is known. (This threshold may also be increased or decreased if the number of board members changes.) Additionally, one timelocked signing key will be controlled by David Vorick. This key will act as a “dead man’s switch,” to be used in the event of an emergency that prevents Foundation board members from reaching the signature threshold. The timelock ensures that this key cannot be used unless the Foundation fails to sign a transaction for several months.
On the 1st of each month, the Foundation will use its keys to transfer all siacoins in the Fund to two new addresses. The first address will be controlled by a high-security hot wallet, and will receive approximately one month's worth of Foundation expenditures. The second address, receiving the remaining siacoins, will be a modified version of the source address: specifically, it will increase the timelock on David Vorick's signing key by one month. Any other changes to the set of signing keys, such as the arrival or departure of board members, will be incorporated into this address as well.
The Foundation Fund is allocated in SC, but many of the Foundation's expenditures must be paid in USD or other fiat currency. Accordingly, the Foundation will convert, at its discretion, a portion of its monthly withdrawals to fiat currency. We expect this conversion to be primarily facilitated by private "OTC" sales to accredited investors. The Foundation currently has no plans to speculate in cryptocurrency or other assets.
Finally, it is important that the Foundation adds value to the Sia platform well in excess of the inflation introduced by the block subsidy. For this reason, the Foundation intends to provably burn, on a quarterly basis, any coins that it cannot allocate towards any justifiable expense. In other words, coins will be burned whenever doing so provides greater value to the platform than any other use. Furthermore, the Foundation will cap its SC treasury at 5% of the total supply, and will cap its USD treasury at 4 years’ worth of predicted expenses.
 
Addendum: Hardfork Timeline
We would like to see this proposal finalized and accepted by the community no later than September 30th. A new version of siad, implementing the hardfork, will be released no later than October 15th. The hardfork will activate at block 293220, which is expected to occur around 12pm EST on January 1st, 2021.
 
Addendum: Inflation specifics
The total supply of siacoins as of January 1st, 2021 will be approximately 45.243 GS. The initial subsidy of 1.57 GS thus increases the supply by 3.47%, and the total annual inflation in 2021 will be at most 10.4% (if zero coins are burned). In 2022, total annual inflation will be at most 6.28%, and will steadily decrease in subsequent years.
 

Conclusion

We see the establishment of the Foundation as an important step in the maturation of the Sia project. It provides the ecosystem with a sustainable source of funding that can be exclusively directed towards achieving Sia's ambitious goals. Compared to other projects with far deeper pockets, Sia has always punched above its weight; once we're on equal footing, there's no telling what we'll be able to achieve.
Nevertheless, we do not propose this change lightly, and have taken pains to ensure that the Foundation will act in accordance with the ideals that this community shares. It will operate transparently, keep inflation to a minimum, and respect the user's fundamental role in decentralized systems. We hope that everyone in the community will consider this proposal carefully, and look forward to a productive discussion.
submitted by lukechampine to siacoin [link] [comments]

Recovering private key of change address from Bitcoin Core

Hello, I am trying to help my mostly Bitcoin-ignorant friend with the following problem:
A long time ago, he mined some BTC using Bitcoin Core client with unecrypted wallet.dat.
Some years later, he added encryption to his client and sent some BTC to someone else ("transaction X"). Then he forgot the password of his wallet.dat.
He had backed up the original (unencrypted) wallet.dat file so I managed to extract private key of his mining address from it and send his funds safely elsewhere.
However, during "transaction X", around 0.7 BTC ended on a new "change address". I cannot access the private key of this "change address" because it was generated after the wallet was encrypted and he forgot the password.
Or is there a way to find this private key, e.g. are the change addresses PKs in Bitcoin Core generated using some non-random derivation algorithm?
I have access to both versions of the wallet.dat file (original unecrypted and later encrypted before "Transaction X")
EDIT: Thanks everyone. The wallet was old (non HD) type so the change address' private key is probably lost forever, unless my friend remembers his password.
submitted by fuxoft to Bitcoin [link] [comments]

Recovering founds from a Trezor - PIN forgot and Seed lost

Hello everyone.
As you can guess from the title, this is a sad story. A friend of mine purchased some Bitcoin few years ago and he was keeping them on Mycelium wallet on Android. I told him it's better to keep them on a hardware wallet and I suggested him to get a Trezor. Few years later he wants to sell some, goes to the browser app to only realize he forgot the PIN and the seed recovery phrase was lost, too.
I think he didn't update his Trezor firmware for a long time so I was wondering if I can use one of those physical exploits to recover the seed from the device (such as this one https://medium.com/@Zero404Cool/trezor-security-glitches-reveal-your-private-keys-761eeab03ff8 which works on FW < 1.5.2 ).
He tried several PINs before giving up and now the Trezor is asking to wait 16xxx seconds before next attempt can be made. I know the Trezor have a security "seed wipe" after several failed attempts so I told him to stop before that happens.
  1. How can I confirm which Firmware is currently installed on the Trezor? From wallet.trezor.io I can't load the device settings because the Trezor is currently locked as explained above.
  2. Anyone with deep knowledge of the Trezor wallet can help me with performing the exploit? I know there are few ways to extract the PIN/seed from the device but for a good reason none of them are made public.
I know it's hard to trust random people on the net, I could have stolen this device. But any help will be very appreciated. My friend is willing to pay a bounty if funds are succesfully recovered, which I would entirely donate to whoever can help with it.
submitted by TaurusBit to TREZOR [link] [comments]

Wallet.dat Security

Am I right in thinking that an encrypted wallet.dat (used in bitcoin core) is pretty much unbreakable if encrypted with a strong password? I.e. if someone got their hands on it, there isn't much they could do with it?
Am I also right in thinking that the main attack vector for a node wallet would be malware on the node computer, such as a key logger, which could extract the wallet.dat password if typed?
Finally, during transaction signing, is there a point in which private keys are exposed? I guess if so, malware would be able to monitor for transaction signing and get private keys that way.
Thanks for your help! I'm trying to understand the security aspects of the native core wallet, more for education than anything!
submitted by BankingOnMyOwn to BitcoinBeginners [link] [comments]

Windows / Linux Guide to using Trezor with Bitcoin Core (HWI)

This is a guide to using your Trezor with Bitcoin Core. It may seem like more trouble than it's worth but many applications use Bitcoin Core as a wallet such as LND, EPS, and JoinMarket. Learning how to integrate your Trezor into a Bitcoin Core install is rather useful in many unexpected ways. I did this all through the QT interfaces, but it's simple to script. There is a much simpler guide available from the HWI github, and the smallest Linux TLDR is here
Unfortunately, I don't have access to a Coldcard or Ledger. I'm not sure how the setpin or -stdinpass parameters are handled on that HW.

( A ) Install TrezorCTL, HWI, and build GUI

You only need to set the wallet up once, but may repeat to upgrade

( A.I ) Download extract and install HWI

  1. Download and isntall Python
  2. Download https://github.com/bitcoin-core/HWI/archive/1.1.2.zip
  3. Extract it to a working folder (assumes C:\User\Reddit\src\HWI)
  4. Change Directory (cd) to working folder cd "C:\User\Reddit\src\HWI"
  5. Setup venv python -m venv .venv
  6. Enter venv .venv\Scripts\activate.bat 1
  7. Install dependencies python -m pip install -U setuptools pip wheel
  8. Install TrezorCTL python -m pip install trezor[hidapi]
  9. Install HWI python -m pip install hwi pyside2
  10. Download github.com/libusb/libusb/releases/download/v1.0.23/libusb-1.0.23.7z
  11. Extract MS64\dll\libusb-1.0.dll from the archive
  12. Copy to pywin copy libusb-1.0.dll .venv\Lib\site-packages\pywin32_system32\

( A.II ) Build the QT UI files

  1. Download and install MSYS2
  2. Launch a mingw64.exe shell
  3. CD to working folder cd "C:\User\Reddit\src\HWI"
  4. Enter venv source .venv/Scripts/activate 1
  5. Run UI build bash contrib/generate-ui.sh

( B ) Create a Trezor wallet in Bitcoin Core (testnet)

You only need to set the wallet up once, no private key data is stored, only xpub data

( B.I ) Retrieve keypool from HWI-QT

  1. Launch hwi-qt.exe --testnet (assuming testnet)
  2. Click Set passphrase (if needed) to cache your passphrase then click Refresh
  3. Select you trezor from the list then click Set Pin (if needed)
  4. Ensure your Trezor in the dropdown has a fingerprint
  5. Select Change keypool options and choose P2WPKH
  6. Copy all the text from the Keypool textbox

( B.II ) Create the wallet in Bitcoin QT

  1. Launch Bitcoin Core (testnet) (non-pruned) 2
  2. Select Console from the Window menu
  3. Create a wallet createwallet "hwi" true
  4. Ensure that hwi is selected in the console wallet dropdown
  5. Verify walletname using the getwalletinfo command
  6. Import keypool importmulti '' (note ' caging)
  7. Rescan if TXNs are missing rescanblockchain 3

( C.I ) Grab Tesnet coins

  1. Select the Receive tab in Bitcoin Core (testnet)
  2. Ensure that the Wallet dropdown has hwi selected
  3. Select Create new receiving address and copy address
  4. Google "bitcoin testnet faucet" and visit a few sites
  5. Answer captcha and input your addressed copied from C.I.3

( D ) Spending funds with HWI

This is how you can spend funds in your Trezor using Bitcoin Core (testnet)

( D.I ) Create an unsigned PSBT

  1. Select the Send tab in Bitcoin Core (testnet)
  2. Ensure that the Wallet dropdown has hwi selected
  3. Verify your balance in Watch-only balance
  4. Rescan if balance is wrong (see B.II.7) 3
  5. Craft your TXN as usual, then click Create Unsigned
  6. Copy the PSBT to your clipboard when prompted

( D.II ) Sign your PSBT

  1. In HWI-QT click Sign PSBT
  2. Paste what you copied in D.I.6 in PSBT to Sign field
  3. Click Sign PSBT
  4. Copy the text for PSBT Result

( D.III ) Broadcast your TXN

  1. Select the Console window in Bitcoin Core (testnet)
  2. Ensure that the Wallet dropdown has hwi selected
  3. Finalize PSBT: finalizepsbt
  4. Copy the signed TXN hex from the hex field returned
  5. Broadcast TXN: sendrawtransaction

Final Thoughts

I did this all through the GUI interfaces for the benefit of the Windows users. Windows console is fine, but the quote escaping in windows console is nightmarish. Powershell would be good, but that throws this on a whole another level for most Windows folks.
There is also the need to use HWI-QT due to a bug in blank passphrases on the commandline. You can work around it by toggling passphrase off or on, but again, it's more than I wanted to spell out.
Footnotes:
  • 1. - Later version of python put the activate script under 'bin' instead of 'Script'
  • 2. - You can run pruned, but you need to have a fresh wallet
  • 3. - Rescan is automatic on 'importmulti' but I was pruned so it was wierd
submitted by brianddk to Bitcoin [link] [comments]

Swiss Key cards...

Swiss Key cards... submitted by kylekemper to Bitcoin [link] [comments]

Windows Guide to using Trezor with Bitcoin Core (HWI)

This is a guide to using your Trezor with Bitcoin Core. It may seem like more trouble than it's worth but many applications use Bitcoin Core as a wallet such as LND, EPS, and JoinMarket. Learning how to integrate your Trezor into a Bitcoin Core install is rather useful in many unexpected ways. I did this all through the QT interfaces, but it's simple to script. There is a much simpler guide available from the HWI github, and the smallest TLDR is here

( A ) Install TrezorCTL, HWI, and build GUI

You only need to set the wallet up once, but may repeat to upgrade

( A.I ) Download extract and install HWI

  1. Download and isntall Python
  2. Download https://github.com/bitcoin-core/HWI/archive/1.1.2.zip
  3. Extract it to a working folder (assumes C:\User\Reddit\src\HWI)
  4. Change Directory (cd) to working folder cd "C:\User\Reddit\src\HWI"
  5. Setup venv python -m venv .venv
  6. Enter venv .venv\Scripts\activate.bat 1
  7. Install dependencies python -m pip install -U setuptools pip wheel
  8. Install TrezorCTL python -m pip install trezor[hidapi]
  9. Install HWI python -m pip install hwi pyside2
  10. Download github.com/libusb/libusb/releases/download/v1.0.23/libusb-1.0.23.7z
  11. Extract MS64\dll\libusb-1.0.dll from the archive
  12. Copy to pywin copy libusb-1.0.dll .venv\Lib\site-packages\pywin32_system32\

( A.II ) Build the QT UI files

  1. Download and install MSYS2
  2. Launch a mingw64.exe
  3. CD to working folder cd "C:\User\Reddit\src\HWI"
  4. Enter venv source .venv/Scripts/activate 1
  5. Run UI build bash contrib/generate-ui.sh

( B ) Create a Trezor wallet in Bitcoin Core (testnet)

You only need to set the wallet up once, no private key data is stored, only xpub data

( B.I ) Retrieve keypool from HWI-QT

  1. Launch hwi-qt.exe --testnet (assuming testnet)
  2. Click Set passphrase (if needed) to cache your passphrase then click Refresh
  3. Select you trezor from the list then click Set Pin (if needed)
  4. Ensure your Trezor in the dropdown has a fingerprint
  5. Select Change keypool options and choose P2WPKH
  6. Copy all the text from the Keypool textbox

( B.II ) Create the wallet in Bitcoin QT

  1. Launch Bitcoin Core (testnet) (non-pruned) 2
  2. Select Console from the Window menu
  3. Create a wallet createwallet "hwi" true
  4. Ensure that hwi is selected in the console wallet dropdown
  5. Verify walletname using the getwalletinfo command
  6. Import keypool importmulti '' (note ' caging)
  7. Rescan if TXNs are missing rescanblockchain 3

( C.I ) Grab Tesnet coins

  1. Select the Receive tab in Bitcoin Core (testnet)
  2. Ensure that the Wallet dropdown has hwi selected
  3. Select Create new receiving address and copy address
  4. Google "bitcoin testnet faucet" and visit a few sites
  5. Answer captcha and input your addressed copied from C.I.3

( D ) Spending funds with HWI

This is how you can spend funds in your Trezor using Bitcoin Core (testnet)

( D.I ) Create an unsigned PSBT

  1. Select the Send tab in Bitcoin Core (testnet)
  2. Ensure that the Wallet dropdown has hwi selected
  3. Verify your balance in Watch-only balance
  4. Rescan if balance is wrong (see B.II.7) 3
  5. Craft your TXN as usual, then click Create Unsigned
  6. Copy the PSBT to your clipboard when prompted

( D.II ) Sign your PSBT

  1. In HWI-QT click Sign PSBT
  2. Paste what you copied in D.I.6 in PSBT to Sign field
  3. Click Sign PSBT
  4. Copy the text for PSBT Result

( D.III ) Broadcast your TXN

  1. Select the Console window in Bitcoin Core (testnet)
  2. Ensure that the Wallet dropdown has hwi selected
  3. Finalize PSBT: finalizepsbt
  4. Copy the signed TXN hex from the hex field returned
  5. Broadcast TXN: sendrawtransaction

Final Thoughts

I did this all through the GUI interfaces for the benefit of the Windows users. Windows console is fine, but the quote escaping in windows console is nightmarish. Powershell would be good, but that throws this on a whole another level for most Windows folks.
There is also the need to use HWI-QT due to a bug in blank passphrases on the commandline. You can work around it by toggling passphrase off or on, but again, it's more than I wanted to spell out.
Footnotes:
  • 1. - Later version of python put the activate script under 'bin' instead of 'Script'
  • 2. - You can run pruned, but you need to have a fresh wallet
  • 3. - Rescan is automatic on 'importmulti' but I was pruned so it was wierd
submitted by brianddk to TREZOR [link] [comments]

Help Me Understand If I’ve Been Scammed

Please Help Me Understand If I’ve Been Scammed
Super new to bitcoin and I Met this person through Instagram claiming to be a bit coin miner. Required an initial investment of $500 and said I need to create a blockchain wallet and fund that wallet through something like coinmama. They provided the link to create the wallet through Blockchain. I felt off and $500 isn’t that much to me so I put in as an experiment as they claimed to be able to mine over the course of 5 days and provide me earnings of around $750 or more etc (something like 40%+ returns, which is crazy). I clicked their link and made the wallet through that link and then funded the $500. Without my permission they were able to extract funds to “start the mining process”. They just had this control over my wallet that I wasn’t aware of but they let me know it was normal as that’s what happens when configured to the miner. That already had me feeling wrong as this stranger was able to send my money out to the ether without my consent.
Anyways, 5 days pass and I remind them it should be time to reap my rewards and they’re like “oh yeah ok should be ready soon”. I’m still skeptical. Then I’m told there’s another step in the process which has caught me by complete surprise. This is what scared me. Surprisingly more of my money is suddenly required in order to access my original investment and for the life of this “miner” they are unable to give me an explanation as to logically why this is the case and why this needs to happen other than “it’s the next step idk what to say to you”. They basically created a separate wallet from the first wallet they had created and had me fund and I was given this new login info for this 2nd blockchain wallet with “non spendable BTC” in it claiming my funds were there. And there was like $150k in this non spendable BTC that needed a private key to access. I’m told that it’s all good and that wallet must be funded with a minimum investment of 0.12 BTC or like $2.3k in order to commence the payout process and release my matured investment which would be the $2.3k plus the $500 matured investment. I refused as it felt so wrong and just another way to squeeze more money out of me. I’m so confused and feel dumb as fuck as it seems my $500 investment is lost. I don’t feel comfortable injecting more money to further this experiment any longer.
Is this actually the normal process or am I being completely scammed?
submitted by Bodhisattva1 to BitcoinBeginners [link] [comments]

How to export private key on Blockchain.info How to find the private key of an imported Bitcoin address ... Getting your Private Keys from the Bitcoin Core wallet ... Bitcoin private keys crack from hard drive How to Get Private Key of Bitcoin Wallet  How To Find Bitcoin Private Key

I have encrypted my bitcoin wallet. I know the passphrase, that's not the issue. I want to transfer my bitcoins to blockchain.info but it's asking me for the private key. I cannot find it nor can I find how to find it. I have searched around on google; a few sites say that pywallet will extract the private key, but I have used this and all I ... I created a website and add bitcoin payment option on it, create a new wallet on the blockchain, I have an API key from blockchain.info and xpub key, but for the transaction, I need a “bitcoin Secret key”. I just want to know that, every key have is own private key, so if i extract the private or secret key and add in site admin panel so it works for all. I am confused, There are random generated Bitcoin private keys, converted into WIF format and hashed to addresses. After getting Bitcoin address we check the quantity of transactions (Tx) and get its balance. If you see any address with transactions, we will store this address into leak database and will try to notify the owner. Importing private key text to your Bitcoin.com wallet. This is how to import using the copy-to-clipboard method. If you receive an email on your device with your exported wallet, or choose "Copy to clipboard", on most devices you can press the screen and wait for a “Paste” button to appear, then paste the backup code in to the field. From the Home screen, tap "Create new wallet" or (if you ... Every Bitcoin and Ethereum private key is on this website. Yes, your private key is on this website too, but don't worry, nobody will ever find it. If you want to try searching for your wallet, click one of the buttons below. Random page. Random page. How does this work? A private key is basically just a number between 1 and 2 256. This website generates keys for all of those numbers, spread ...

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How to export private key on Blockchain.info

In this tutorial we are going to get our private keys from the bitcoin core wallet. This only works when you created the bitcoin address in the same wallet. ... Extract Private Keys from Trust Wallet - works for Bitcoin, ... Coinbase Private Keys and Bitcoin, Bitcoin Gold, Bitcoin SegWit2X Forks - Duration: 5:07. GottaMinute 9,684 views. 5:07 . How To ... How to Get Private Key of Bitcoin Wallet. In this tutorial we are going to get our private keys from the bitcoin core wallet. This only works when you created the bitcoin address in the same wallet. this video shows how to extract private keys of lost bitcoin wallet.dat from hard drives for more details contact whatsapp:- +919701193528. how to get private keys of bitcoin - Duration: 7:30. Harsh Agarwal 22,268 views. 7:30 . MyEtherWallet (MEW) Tutorial - How to Export Private Keys & ERC20 Tokens - Duration: 10:53. Every Bit Helps ...

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