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

Was using bitcoin-qt on OSX, blockchain got corrupted and now it is impossibly big to re-download, what thin clients can I import my wallet.dat into?? OSX 10.7.5. I already tried electrum and looks like I'd have to build it from github, can't figure it out. please help.

Send help! is there a safe way I could download a torrent of the blockchain? i tried to reindex the blockchain (after my harddrive got unplugged while bitcoin-qt was running) and it looks like it would literally take a week of spinning my poor laptop fan balls out.
edit: wallet.dat is encrypted and safely backed up.
submitted by sporabolic to Bitcoin [link] [comments]

Can I import an old wallet.dat into a wallet app without downloading the blockchain? /r/Bitcoin

Can I import an old wallet.dat into a wallet app without downloading the blockchain? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Old Mining Contract - Reddit Sleuths Needed

Dear Famed Reddit Users,
I apologise in advance if I waste anybody's time here however I need suggestions on whether I can establish if I received a payment from a mining contract I took out in 2013.
Back in July 2013 I bough a Bitcoin mining contract from a website called I paid $49 for "1 GH/s Bitcoin Mining Power – 1 Year Contract (#1GH001) "
This website no longer exists and it may have been a scam as I was quite flush back then so I bought the contract and thought no more of it.
After the initial purchase email in July 2013 I heard no more until November 2013.
13 November 2013 - Newsletter email stating: "After a long struggle Mining is started for July to till date customers . The order status for all paid orders will be updated within 48 Hours . And we will update"
16 November 2013 I have an email stating that the order had been processed
22 November 2013 Email stating that payouts have been made from wallet address 1LKpQYvMCyfa5AwD8KrDknhjGfP87xWsVN
No further emails after this point.
When I check the blockchain for this address I can see coins were sent to multiple addresses on 22 November 2013.
I do not know what wallet address I provided to bitcoinfrenzy for receipt of any payout.
I did create a wallet on blockchain in May 2013. I have accessed this wallet and there is no transaction history showing.
I have an old version of bitcoin-qt on an old hard disk drive which has a wallet.dat file created April 2013. I have been unsuccessful when trying to load this wallet.
I have all hard drives/laptops from 2013 and since.
Views on: Am I wasting my time here? I s there anything else I can search my hard drives for? How can I access my old wallet.dat (and none of the results I've found while searching have worked).
NB if one of the receiving addresses from the payout belongs to me the coins will be unspent, there will be no transactions after 22 November 2013 and there may not be any other transactions prior to this.
Thanks for reading
submitted by Vedron11 to Bitcoin [link] [comments]

Accessing my Bitcoin w/my .dat files

Hi. 2013/2014 I bought some Bitcoin. A couple of years later my computer croaked. I was able to create .dat files for my bitcoin and litecoin. (I think I used an old ripple wallet, if that makes sense). Anyway...I still have the .dat files and the password data. I downloaded the Bitcoin Core. Now I'm stuck. I don't know how to import the .dat files and/or to see what is in my old wallet. Any thoughts?
submitted by ExoticRip432 to Bitcoin [link] [comments]

Gridcoin "Fern" Release
Finally! After over ten months of development and testing, "Fern" has arrived! This is a whopper. 240 pull requests merged. Essentially a complete rewrite that was started with the scraper (the "neural net" rewrite) in "Denise" has now been completed. Practically the ENTIRE Gridcoin specific codebase resting on top of the vanilla Bitcoin/Peercoin/Blackcoin vanilla PoS code has been rewritten. This removes the team requirement at last (see below), although there are many other important improvements besides that.
Fern was a monumental undertaking. We had to encode all of the old rules active for the v10 block protocol in new code and ensure that the new code was 100% compatible. This had to be done in such a way as to clear out all of the old spaghetti and ring-fence it with tightly controlled class implementations. We then wrote an entirely new, simplified ruleset for research rewards and reengineered contracts (which includes beacon management, polls, and voting) using properly classed code. The fundamentals of Gridcoin with this release are now on a very sound and maintainable footing, and the developers believe the codebase as updated here will serve as the fundamental basis for Gridcoin's future roadmap.
We have been testing this for MONTHS on testnet in various stages. The v10 (legacy) compatibility code has been running on testnet continuously as it was developed to ensure compatibility with existing nodes. During the last few months, we have done two private testnet forks and then the full public testnet testing for v11 code (the new protocol which is what Fern implements). The developers have also been running non-staking "sentinel" nodes on mainnet with this code to verify that the consensus rules are problem-free for the legacy compatibility code on the broader mainnet. We believe this amount of testing is going to result in a smooth rollout.
Given the amount of changes in Fern, I am presenting TWO changelogs below. One is high level, which summarizes the most significant changes in the protocol. The second changelog is the detailed one in the usual format, and gives you an inkling of the size of this release.



Note that the protocol changes will not become active until we cross the hard-fork transition height to v11, which has been set at 2053000. Given current average block spacing, this should happen around October 4, about one month from now.
Note that to get all of the beacons in the network on the new protocol, we are requiring ALL beacons to be validated. A two week (14 day) grace period is provided by the code, starting at the time of the transition height, for people currently holding a beacon to validate the beacon and prevent it from expiring. That means that EVERY CRUNCHER must advertise and validate their beacon AFTER the v11 transition (around Oct 4th) and BEFORE October 18th (or more precisely, 14 days from the actual date of the v11 transition). If you do not advertise and validate your beacon by this time, your beacon will expire and you will stop earning research rewards until you advertise and validate a new beacon. This process has been made much easier by a brand new beacon "wizard" that helps manage beacon advertisements and renewals. Once a beacon has been validated and is a v11 protocol beacon, the normal 180 day expiration rules apply. Note, however, that the 180 day expiration on research rewards has been removed with the Fern update. This means that while your beacon might expire after 180 days, your earned research rewards will be retained and can be claimed by advertising a beacon with the same CPID and going through the validation process again. In other words, you do not lose any earned research rewards if you do not stake a block within 180 days and keep your beacon up-to-date.
The transition height is also when the team requirement will be relaxed for the network.


Besides the beacon wizard, there are a number of improvements to the GUI, including new UI transaction types (and icons) for staking the superblock, sidestake sends, beacon advertisement, voting, poll creation, and transactions with a message. The main screen has been revamped with a better summary section, and better status icons. Several changes under the hood have improved GUI performance. And finally, the diagnostics have been revamped.


The wallet sync speed has been DRASTICALLY improved. A decent machine with a good network connection should be able to sync the entire mainnet blockchain in less than 4 hours. A fast machine with a really fast network connection and a good SSD can do it in about 2.5 hours. One of our goals was to reduce or eliminate the reliance on snapshots for mainnet, and I think we have accomplished that goal with the new sync speed. We have also streamlined the in-memory structures for the blockchain which shaves some memory use.
There are so many goodies here it is hard to summarize them all.
I would like to thank all of the contributors to this release, but especially thank @cyrossignol, whose incredible contributions formed the backbone of this release. I would also like to pay special thanks to @barton2526, @caraka, and @Quezacoatl1, who tirelessly helped during the testing and polishing phase on testnet with testing and repeated builds for all architectures.
The developers are proud to present this release to the community and we believe this represents the starting point for a true renaissance for Gridcoin!

Summary Changelog



Most significantly, nodes calculate research rewards directly from the magnitudes in EACH superblock between stakes instead of using a two- or three- point average based on a CPID's current magnitude and the magnitude for the CPID when it last staked. For those long-timers in the community, this has been referred to as "Superblock Windows," and was first done in proof-of-concept form by @denravonska.







As a reminder:









Detailed Changelog

[] 2020-09-03, mandatory, "Fern"





submitted by jamescowens to gridcoin [link] [comments]

Found back my old wallet.dat from 2011...Now what?

Looking through some old back-ups I found back an old folder for Bitcoin (os x, in applicationsupport).
How can I read it? I know I installed it back in the day when I heard about it, just to check it out. I don't even remember how much I mined, if anything...
submitted by autofasurer to Bitcoin [link] [comments]

How to manually split Bitcoin Cash and Bitcoin SV with the standard bitcoin full node application and the other

I had a wallet.dat from the default bitcoin full node client which has been several addresses where the balances does'nt been changed since 2015.
The last time I started the client was been beginning of 2017.
So I want now to move all the created sub currencies to different addresses on they own currencies: Bitcoin, Bitcoin Cash, Bitcoin Gold, Bitcoin Private, Bitcoin Cash.
Many full backups of the directory .bitcoin was been created for years.
So first I started to created for each currency an own user. Each user got the newest own client software. I copied the .bitcoin directory to each user (.bitcoin must be changed to .bitcoingold) so each currency must not be download the full blockchain (only starting from 2017).
After finished I transfered all the bitcoins to a new created addresses so no more bitcoins are on the old addresses. I made this through the network so the transaction is shown also in the blockchain.
I did this also for bitcoingold without any problems.
At bitcoin cash and sv it is more complex, because If I made a transaction in bitcoin cash also on bitcoin sv it could be possible the transaction was made.
But it is possible to split it if you can create a transaction which is not valid in one of the chains where it is valid in the other. This is possible if you have allready a small value in one of the currencies.
So I used a small amount in bitcoin cash:
I transfered the bitcoin cash splitted amount to a new address on my full node wallet which holds the unsplitted values.
I created on the local wallet a new address.
I send all my amount including the splitted value to this new addess.
In bitcoin cash the transaction was been valid so the new address now holds all the value where in bitcoin sv the value still was on the old adresses.
Now in bitcoin sv full node client I created a new address and transfered all the value to this new address. In bitcoin sv the transaction was been now valid where in bitcoin cash the old addresses had been allready emtied and the transaction was denied by the network.
Finished: my bitcoin cash and sv was been splitted.
PS: It was hard to find information that this is possible. My first try to do this was been failed because I made a first transaction on bitcoin cash without a splitted value so the transaction was valid and execude on both chains.
It was simply easy to save the moved amount also in bitcoin sv because I could extract the private address in bitcoin cash client and import them in bitcoin sv client so the value was been shown again. After this try I occured to me that it should be possible to split the amount by a value which is only availabe in one of the chains.
This is the reason for this manual. Please be carefully to use the correct addresses for sending. Begin with a small amount (+ split amount) before sending the rest (+ split amount) :-)
If you mean this was helpfull donation is welcome:
bitcoin: 18H11zjyw6CX1kLvxA3UJEYNqpbHivqp5z
bitcoin cash: qr4pg4pacvuh2dzau8rsdy9wpsrjth8mlyjj4ftray
bitcoin sv: 1AdyKXpDiwVHuXeSkgCd314TPiuzt8EqjD
bitcoin gold: GgWdEk1W3KJwCf8CMLi5fpLWSqukb64bNU
bitcoin private: b1TR4rKsT6uV4md1GCP6S2Y7mxDFtAQJuus
submitted by Eimo3imu to btc [link] [comments]

Another one (old wallet recovery)

Hey everyone,
I've been out of the crypto game for a long time, but managed to dig up a wallet that I had stored on an old PC from early 2015. It wouldn't have much in it, maybe a few BTC at most, but it would be nice to recover it and cash out. The machine had Bitcoin Core installed, hasn't been connected to the internet since 2015, and is currently interstate - I've copied wallet.dat and that's all I have access to for now. The wallet is encrypted, backed up, copied to multiple secure locations, etc, and I remember the passphrase, but from what I've read in other threads, the private keys are the important part and I may need to do a "key dump"?
I tried installing Electrum and importing the wallet, but Electrum doesn't recognise the file. Am I right in thinking that the following would be the best solution?
  1. Download and install Bitcoin Core.
  2. Place wallet.dat into the appropriate directory.
  3. Open Bitcoin Core and allow it to "catch up" and download 240 GB worth of blockchain history.
  4. Possibly be forced to input the passphrase to access the wallet again, and transfer BTC out to an exchange of my choosing (unsure if this is how it would work at this stage).
Is there a way to recover the wallet without being forced to download hundreds of GB worth of data? I live in Australia, with typical Australia-tier internet, and it could quite literally take up to a week to download.
Apologies if there's any shortfall of knowledge on my end of things, it's been a long time since I've kept up with crypto and things seem to have changed quite a bit over the last four years. I appreciate any advice, and y'all are welcome to shame me on my relative ignorance, lol. Thanks!
submitted by ChronicLoser to Bitcoin [link] [comments]

Claiming BCH from my bitcoin core wallet

Hi Guys,

I have a wallet which I've been using from around 2015 with bitcoin core (so its a wallet.dat).

I have spent coins since the split but I had coins at the split time.

Now of course I wish to claim these coins, but I wish to carry on using bitcoin core for btc.

I have installed Electron Cash, created a wallet.

Is it correct that

if I were to get the private keys from bitcoin core with dumpprivkey then enter the output from that command into the sweep window, is this correct?

This will not affect my correct btc held in Bitcoin Core?

This will show the balance I had as of block 478558 in Electron Cash?

Or should I download Bitcoin ABC, and import my Bitcoin Core wallet.dat/copy it over to Bitcoin ABC?(the problem with this is I do not have the resources for all the blocks needed to run a full node for BCH)

Thanks guys.
submitted by zacctacc to Bitcoincash [link] [comments]

What is wallet.dat and what to do with it?

My father was really interested in cryptocurrencies(back when no one knew what all the mining was about). So he started mining (I was a kid back then) after about half a year he gave up because he didn't earn much. He passed away at the year 2015. So today I searched from what was left from the rigs and found 2 hard drives. So I connected one of the drives to my pc and found some Wallet.dat files (and other I know that wallet.dat are important) but I don't know what exactly to do with the wallet.dat file so I was hoping I can get some information here. Sorry for my English.
submitted by ZelenMaimun to Bitcoin [link] [comments]

Help with wallet

I installed a blackcoin wallet on a new computer, how do I import my previous wallet.dat?
Also where does Blackcoin save it's blockchain? I downloaded the wallet installer .exe and the wallet opens when I click it but I don't know where it is saving the Blockchain (or does it not save the Blockchain, and just purges as it synchronizes?), Bitcoin lets me choose where I want to save the Blockchain data.
submitted by lLsSdD to blackcoin [link] [comments]

How to Cold Store Your Cryptocurrency for Safekeeping

According to CipherTrace (which specializes in litigation tools and services for cryptographic markets), between 2018 and 2019, the amount of theft from cryptographic wallets exceeds $2 billion. Thefts and break-ins are caused by a variety of reasons: simple incompetence in cryptographic storage, as well as by companies that provide storage services. It is not unusual for holders of crypto currency to lose access to their wallets by themselves, one of the last known cases occurred in Ireland: ,57 million dollars couldn’t be confiscated from a detained drug dealer, which were stored in bitcoins. The problem was that the wallets keys were lost.
The most secure way is a cold storage — all account data and private keys are kept offline and all transactions are manual. This storage method is great because it is fully protected from hacking and interception of data, but it is not suitable for those who make daily transfers of cryptocurrency, it is simply inconvenient.
If you compare “cold and hot” wallets, you can give a simple example: A hot wallet can be compared to a wallet that can be lost and stolen. But you can always access your funds. A cold wallet is safe, and access to it is not permanent. You can also take or put money, but it will require a special code.
In this article we will tell you about the most popular types of cold wallets and we will analyze their pros and cons.

Types of cold wallets

All cold wallets have one common thing — the data is stored offline. However, there are several types of cold wallets, which differ in the degree of protection, physical embodiment and cost of the wallet.

Desktop wallet

Desktop wallets are also known for a high level of protection, in addition to the ability to store crypto currency offline. There are so-called “light” wallets weighing less than 1 gb, and “heavy” wallets weighing more than 1 gb. Two of the desktop wallets can be distinguished:

Exodus Wallet

Multicurrency wallet. It was created in 2016 and supports more than 100 crypto currencies, since 2019 has a phone application. The wallet allows you to export private keys that are created locally, and then to upload them back. Private keys can be discounted to removable media and downloaded only when the transaction is completed. If the user decides to leave private keys on the same computer where the wallet is located, keys are securely encrypted. In order to use your wallet ,there is no need to register or to download the entire blockchain — synchronization is taking place online. In addition to wallet services Exodus Wallet provides an integrated crypto-exchange. The installation file weighs 85 mb.

Bitcoin Core

Bitcoin Core is the official Bitcoin wallet. The size of the wallet is 160 gb, but according to the developers of the company, it’s better to give it a separate winchester with the size of 500 gb. From the security viewpoint, it’s suggested to install a security code or a seed phrase, which may consist 8 words. It is also suggested to copy wallet.dat file. — private wallet key, which will allow you to restore access to your funds.

Hardware wallets

Appears like a regular flash drive with an interface (screen, control keys). This wallet can safely store information about the balance and keys, full functionality is available only when connected to a computer, but the latest models have a special button that allows you to confirm the transaction without connecting to a PC. Each time the device offers to generate a new code-password to confirm the transaction, which significantly reduces the probability of hacking. After generating the code, you need to set a mnemonic phrase (seed) — it consists of 12 or 24 words, which are not related to each other in any way. Such type of wallets has a special protection system that allows you to connect even to potentially infected PCs. The wallets themselves won’t be affected by malware.
The obvious cons of hardware wallets are the following:
  1. It is also possible to lose a device that is so small in size.
  2. A physical device can easily fail due to a variety of damages.
  3. It is not recommended to buy such wallets from “hand”, even from friends, as they can be pre-installed with malware.
As you can see, storing crypto currency with a hardware wallets is very safe and secure, however you should take care about the device. Many people who hold a large amount of crypto currency, in order to not to lose a hardware wallet, store it in a safe deposit box, depriving someone of access to it.

Popular Hardware Wallets models

Trezor One

The first hardware wallet produced in 2013 by the Czech company Satoshi Labs. The device has an OLED display with a pin code, public addresses and Seed phrases. Trezor One has won recognition from users due to its multicurrency and affordable price ($65), it is also considered one of the most secure hardware wallets.
Ledger Nano S
The wallet was released in 2016 by the French company Ledger SAS. Distinctive feature from the other wallets, is the Secure Element controller, which meets banking standards and is certified CC EAL 5+. Also, in order to work with each crypto currency you need to install a special application for this currency on the device, it is not quite convenient, however more secure. The average price of the device is $85.
The purse was released in 2015 in the U.S.. Distinctive feature is OLED display — 256 by 64 pixels. Due to this, you can fully see both the address of the wallet, and the seed phrase. Also, the wallet has a built-in exchange service ShapeShift — an opportunity to exchange crypto currency without entering the exchange. The average price of the device is $50.
Ionos Schnelly’s wallet was invented in Switzerland. In size it’s almost the most compact among all representatives of the hardware wallets. A distinctive feature is the availability of a backup — the card can be multiplied and kept in several places, by analogy with the seed-phrase. In November 2020, support for these wallets will be discontinued, but all owners will be given a 30% discount on the new model. The average price of the device is $55.
Developed in Taiwan by CoolBitX, which has long been manufacturing components for Visa and MasterCard. As well as Ledger Nano S has a security standard CC EAL 5+. This wallet works only through smartphones, connecting to them through Bluetooch. The average price of the device is $100.

Paper Wallet

In the age of technological process, plain paper has become a rather reliable method for storing cryptocurrency. With the help of special services, such as, you can generate public and private keys, then writing them down on paper. You can also print keys as a QR code. To accept transactions with such a wallet, you provide the sender with a public key. To access the funds, you need to find any online wallet that supports your crypto currency. Enter your private key into your online wallet, thus integrating your funds into the system. However, you should understand that after this procedure your wallet will become “hot”.
The best of this storage method — paper wallet is free, its safety depends only from you. When storing a paper wallet to protect it from the fire, water and aging. Also, do not tell other people about where your paper wallet is hidden.
The disadvantages of this storage:
  1. If your wallet is lost, it will be impossible to restore it.
  2. Exposed to a physical damage.
  3. After sending the transaction, you will have to create a new cold wallet.

Offline transaction signature

For this storage method, you will need two PCs. The essence is that the secret keys are never in contact with the Internet, but are stored digitally. Offline transaction method is suitable for people who do not make a daily transactions and have an access to two devices. The process is below:
  1. A hot wallet is installed on a PC with the Internet. The transaction is created without entering private keys and authorization.
  2. The file with transaction is copied and transferred to the second PC without Internet, where private keys are stored.
  3. The transaction is signed offline, copied and transferred back to the PC with the Internet.
In fact, you can do it with one PC and a USB drive. The USB drive will store private keys. Also, you can create a transaction without entering private keys and authorization, after disconnecting the Internet, connect the flash drive, sign the transaction, turn on the Internet. In this case, you should take care of the antivirus system.
The disadvantages of this method:
  1. Using two PCs or a USB drive involves a lot of actions, which is time consuming.
  2. You need to back up your keys in case your PC or flash drive fails.

Multi-signature wallet

This method implies the creation of a wallet, which can be only withdrawn on condition that the transaction is verified by a predetermined number of users. The maximum number of users who can hold private keys of the wallet- is 15. It is considered as one of the most reliable ways of storage, in fact private keys are not only stored offline, but also divided between different people. Often the wallet with multisignatures is used by large crypto-companies, whose management believes that individually employees can not spend the budget. Moreover, when creating this wallet, the number of required multisignatures is minimal. For example: if one of the six keys is lost, the remaining ones will be enough for the transaction.
The disadvantages of this storage:
  1. If most of the keys are lost, access to the funds cannot be restored.
  2. You will not be able to make transactions on your own without the participation of other key holders.

Private Key Fragmentation

The private wallet key consists of 64 symbols. The key is divided into several fragments. They don’t represent anything separately, but if you put all the fragments together, you can access the funds. The key fragments are similar to multisignatures, but in this case you don’t need a multisig-wallet, and the whole process can be done manually.
The disadvantages of this method:
  1. If one fragment is lost, access to funds will be lost.
  2. The maximum level of protection can only be reached when key fragments are distributed to different places, for example: bookshelf, safe deposit box, car. If you divide the key fragments and put them in different boxes — the required level of protection will not be achieved.
When writing down key fragments on paper, protect the key from fire, water and aging.


Digital currencies are not physically expressed and exist only in the digital code, so cold wallets that doesn’t have an access to the Internet, protect cryptocurrencies from the most important and common problem — hacker theft. However, holders of cold wallets need to understand that the safety of a private key depends only on them. There are different ways to store private keys outside the network, but each of them makes it difficult for the user to make transactions.
Hardware wallets that have been specifically designed for this purpose are considered to be the best option for storing cryptocurrencies. With their help it is possible both to store funds off the network and to make transactions easily, without risking the safety of a private key. If you use other cold wallets, it is recommended to combine them with hot wallets. Keep the required crypto currency for daily transfers on hot wallets, and keep all other crypto on cold wallets.
Please don’t forget to follow us on Telegram and stay updated!
submitted by yourcryptoboss19 to u/yourcryptoboss19 [link] [comments]

I found this folder called ''Bitcoin Blocks'' from 2015.

Is there anything i can i do with it ?
Here is a picture of the folder and all the texts with it
submitted by bildewag to Bitcoin [link] [comments]

Groestlcoin 6th Anniversary Release


Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything.
The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years.
In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.

UPDATED - Groestlcoin Core 2.18.2

This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables.
NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.

How to Upgrade?

If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer.
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications.

Other Linux


Download the Windows Installer (64 bit) here
Download the Windows Installer (32 bit) here
Download the Windows binaries (64 bit) here
Download the Windows binaries (32 bit) here
Download the OSX Installer here
Download the OSX binaries here
Download the Linux binaries (64 bit) here
Download the Linux binaries (32 bit) here
Download the ARM Linux binaries (64 bit) here
Download the ARM Linux binaries (32 bit) here


ALL NEW - Groestlcoin Moonshine iOS/Android Wallet

Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network.
GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.





ALL NEW! – HODL GRS Android Wallet

HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled.
HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user.
Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.



Main Release (Main Net)
Testnet Release


ALL NEW! – GroestlcoinSeed Savior

Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases.
This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats.
To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.


Live Version (Not Recommended)



ALL NEW! – Vanity Search Vanity Address Generator

NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator.
VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address.
VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase.
VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).





ALL NEW! – Groestlcoin EasyVanity 2020

Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet.
If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).




Remastered! – Groestlcoin WPF Desktop Wallet (v2.19.0.18)

Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode.
This wallet was previously deprecated but has been brought back to life with modern standards.


Remastered Improvements



ALL NEW! – BIP39 Key Tool

Groestlcoin BIP39 Key Tool is a GUI interface for generating Groestlcoin public and private keys. It is a standalone tool which can be used offline.



Linux :
 pip3 install -r requirements.txt python3 bip39\ 


ALL NEW! – Electrum Personal Server

Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node.
It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node.
Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine.
Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in.
Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet.
Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.



Linux / OSX (Instructions)


UPDATED – Android Wallet 7.38.1 - Main Net + Test Net

The app allows you to send and receive Groestlcoin on your device using QR codes and URI links.
When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.



Main Net
Main Net (FDroid)
Test Net


UPDATED – Groestlcoin Sentinel 3.5.06 (Android)

Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets).
Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that wallet.
Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.




UPDATED – P2Pool Test Net



Pre-Hosted Testnet P2Pool is available via


submitted by Yokomoko_Saleen to groestlcoin [link] [comments]


Hey guys, so long story short i have a btc core wallet on my computer that I hadn’t opened in a while. When I did my hdd didn’t have enough space to download the full blockchain, so i googled how to prune and did that. Only problem was it kept saying error for some reason after sometime of downloading the blockchain. So i backed up my wallet and downloaded the new btc core wallet because my current one was from 2014. Now it doesn’t show any of my btcs or transactions! When I tried moving my wallet.dat file into the new btc core it shows absolutely nothing. Since then i have deleted the old btc core wallet and am afraid that i lost my bitcoins. Does anyone have any solutions? Anyone that can get help get my bitcoins back I WILL GIVE .25BTC! Thank you!
submitted by Btc_noob321 to Bitcoin [link] [comments]

Please Advise: How to restore old (2013) wallet and get back in this rodeo?

Last time I traded BTC was Dec 2013, when my Mt Gox account got hacked - all USD funds were used to buy BTC, and those coins were then transferred to an unknown attacker. This happened a few months before their complete meltdown however, so I don't believe I was included in the bankruptcy lawsuit (though I did apply). Oh well, a few hundred bucks gone :'(
I quit running my low-payout miner shortly thereafter - basically took the BTC I had left, put it in storage, and forgot about it, thinking "the rest might be worth something, someday".
Over these last couple months, I started looking into how to access it and possibly liquidate. Now, I come to you fine redditors, please help me to not get burned again.
So what I have is an old wallet.dat or two, with anywhere from 0.05 to 0.5 btc in it, and all the software I used at the time. Not at home rn but I believe I used Bitcoin-Qt v0.5. I have tried simply running that again, but it never fully syncs with the network. I have tried on multiple PCs and after about a week of sync time, the client crashes more and more often, until it crashes immediately on startup every time. Afaict that client no longer works to sync with the blockchain.
I have also read about the split that created bitcoin cash, and I figure if my coins can be split I'd be leaving money on the table to not pursue it. But idk if I can do that by just downloading the latest Bitcoin-Core and copying my wallet over, or if I need to take a more careful approach.
So here are the questions I haven't been able to confidently answer myself:
1) Am I correct in my assumption that I need an up-to-date blockchain to open (decrypt with password, view balances) a wallet at all?
2) What is the safest way to open this old wallet, allowing me to have my BTC, and BCH if possible?
3) I may have forgotten my password and need to batch-test many combinations of ~10 keywords, so I need about (10!) guesses. Can I do this from a command line / script or would I need a different utility?
4) About how long would the turnaround time be - after getting my wallet sync'd up to date w/ blockchain - to create an account somewhere and sell the coins? (All using USA banks/providers since I suspect it will be safer this way.)
(Bonus Question) Are graphics cards still usable for mining? I basically pay a fixed cost for electric no matter what my usage is, so I figure if I can I might as well do it.
Thank you so much for any help you can provide! I hope to be back in this market with you all very soon!
submitted by CStheCS to Bitcoin [link] [comments]

06-16 12:55 - 'boss linux' (self.linux) by /u/bossdevelopers removed from /r/linux within 437-447min

-BOSS PROJECT: Standing for Blockchain Operative System Series is a new Linux distribution based on ubuntu core with important changes, highly improved security and the default incorporation of blockchain services and support for cryptocurrencies.We have modified the original standards to transform it into a very useful tool for the entire bitcoin community consisting of an interesting combination of security, manageability, speed and performance. It can be used on any x64 X86 machine simply after installation.
.-BLOCKCHAIN FULLY DEDICATED: It has been more than a decade since the physical birth of cryptocurrencies, although the idea is over 50 years old. The future will undoubtedly be governed by blockchain systems and governments, banks and corporations are already taking positions in this regard. BOSS is not far behind. Now it is possible to mine even if it has not been done previously. For even more in-depth development of the blockchain applications included in BOSS operating systems, you have your own version of bitcoin PoW PoS mining: BitcoinBOSS. Our own blockchain that is enhanced with BOSS token erc20.
-BOSS SECURITY & PRIVACY FEATURES: A weak point of easy access for hacker attacks, such as automatic updates, has been modified so that the user can carry out his updates when he deems necessary and under monitoring. The elevated privileges allow you not only to modify the system, they also allow you to quickly act on files that are prohibited from accessing other operating systems. BOSS has installed active-passive security measures
-MAC ADDRESS DEFAULT SPOOFING: MAC address Spoofing privacy + from BOSS. Every time you log in to your BOSS computer, you are doing so with a different MAC address. Privacy thus reaches its highest degrees by making MAC-TRACK impossible
-LIGHTWEIGHT RECORD: BOSS has achieved maximum performance in a really small space. BOSS takes up very little space and can be downloaded via torrent or direct download through our mirrors. BOSS has concentrated a large operating system in a super small space of less than 1 GB, which puts us at the forefront among the lightest and safest distributions as leaders in relation to gb-installed applications.
-INSTALLATION PROCESS: BOSS installation is simple and guided using the ubiquity installer and depending on the performance of your system it can take between 15-30 minutes in normal circumstances. Download BOSS now and enjoy a high level of performance, security and privacy in an enviable small space. BOSS can be tested after installation, fully or partially installed on your system, together with windows or your favorite operating system.
.-POWERFUL RECOVERY TOOL: BOSS is an excellent file recovery tool. The combination of BOSS tools and its elevated privileges allow you to access areas hidden or inaccessible. Simply use BOSS live to freely rescue files from the laptop where the BOSS USB is inserted. Recover Bitcoin paraphrase or .DAT files easier and faster than other recovery programs simply by acceding to the file system where BOSS usb is inserted.
-STABLE RELEASES: BOSS V01-LTS Available now for download at sourceforge.
-WE DELIVER BOSS: Using BOSS as removable OS is recommended if you do not want to install the system. For this our team recommends the use of persistent USB where your session is recorded and ready for the next login, find everything as you left it. BOSS makes available to its users the delivery of these persistent USB devices worldwide via regular mail or messaging. The flat rate of our installation on the USB and shipping to the user is USD 20 to which we must add the shipping costs in the options selected by the user. Please check with our team to process your shipment while this process is automated on our website. Order now your BOSS or a even more customized BOSS with your company requirements, logo etc. We deliver in CD, USB or SD card in your selected size from minimal 4GB, however 16GB and above are recommended.

boss linux
Go1dfish undelete link
unreddit undelete link
Author: bossdevelopers
1: *ourcef*r*e.**t/proj*cts/*oss-min*mi*al*ed**ion/ 2:*j*cts*****-mi*im**al-editio****]^*1 3: pr*vie*.**g*tk755*.p*g*wid*h*1*00&form*t*png&**uto*w**p*a*p;s=57745a79590667**059****948ab*84e*1*693*7 4: *revi**.it*9l8yh7ag*7551*png?wi*th=160*&a*p;fo*m**=png*amp;a*to=***p&s=acd*6e9**8d2*a**4d*b*14737cf**72**dcc2*5 5: pr**ie**re**3*qyxtw*k755*.*ng?wid**=*600*amp**ormat=p*g&am*;au*o=webp&am*;s=02b*905*4cb**f770b77*13a3*6**90fc*6*0d3b
Unknown links are censored to prevent spreading illicit content.
submitted by removalbot to removalbot [link] [comments]

How can I export my bitcoins from the old ~circa 2011 bitcoin client on OS X (yes, I have googled - please read)

Pardon the newbie question - I've got my bitcoins in a wallet on my very old laptop, using the old client and I'd like to get them onto a more modern client like Electrum. I haven't turned on this laptop in a few years, and am waay behind on downloading the blockchain. I'm not even sure if I have enough disk on my computer to store the whole thing! I tried sending a small transaction to my new wallet, but an hour later, it hasn't arrived (IIRC, the whole blockchain needed to be downloaded to do anything in this client.)
All the instructions that I find talk about going to the "help" menu and running the dumpprivkey command, but I don't see such a menu. Maybe that's on windows? I do have my wallet.dat file, but I don't know how to import that anywhere.
Here's a screenshot of the client:
submitted by RagingOrangutan to Bitcoin [link] [comments]

How should I keep my Bitcoin safe?

Hi, I need some technical help here. In a rare moment of lucidity I bought Bitcoin back in march 2013. I did what everyone recommended, I put a password on the wallet file and I made backups of my wallet file.
The problem is that naive me thought he would contribute to the network, by using Bitcoin QT. Today I have a file of 50 gigabyte on my computer and will have to download a few more gigabyte if I ever want to spend my bitcoin.
I'd rather not upload my wallet file to cause that whole process seems like a recipe for disaster. Is there some easy method to import my wallet file into a lightweight client that I can install on my computer, that doesn't start downloading the whole blockchain everytime I start it up?
submitted by dontbotherbanningme to Bitcoin [link] [comments]

Transferred out of exchange to bitcoin core, not enough storage to sync the blockchain, help?

I feel like a proper idiot right now. I bought some bitcoin, transferred it to bitcoin core, not realising the blockchain is 110GB, I don't have storage for that. So I exported the transaction into a csv, uninstalled bitcoin core and deleted the chain to make room for MultiBit. Now I'm wondering how do I add my bitcoin using the address hash to my MultiBit wallet, can anyone help?
Update: I have taken my computer to a pc repair place where they will try and recover the wallet.dat file. He said he's not too sure it will work because its an ssd drive. Will update with result
submitted by perdanjam to Bitcoin [link] [comments]

Where can I import my wallet.dat?

I am fairly new to Bitcoin, but one year ago, I made a Bitcoin address on Bitcoin-Qt, but I stopped using it, because the whole database downloading took so much space on my disk.
I have my wallet.dat file, but I don't know, where can I use it. I tried Electrum, but it seems that the wallet.dat import doesn't work there.
Can you recommend me any other wallets, where I can import that file?
Thank you.
submitted by Amic58 to Bitcoin [link] [comments]

Need Help With my node

Hi guys!
My node seems to do well but it loses connection from quite often. Someone suggested me looking at debug.log file and I copied/pasted info once I got my node restarted. This line does not look good and it repeats quite a lot:

2020-02-25T23:55:16Z socket recv error Connection reset by peer (104).

2020-02-25T23:54:17Z Verifying last 6 blocks at level 3
2020-02-25T23:54:17Z [0%]...[16%]...[33%]...[50%]...[66%]...[83%]...[99%]...[DONE].
2020-02-25T23:54:39Z No coin database inconsistencies in last 6 blocks (14920 transactions)
2020-02-25T23:54:39Z block index 48257ms
2020-02-25T23:54:39Z init message: Loading wallet...
2020-02-25T23:54:39Z BerkeleyEnvironment::Open: LogDir=/home/bitcoin/.bitcoin/database ErrorFile=/home/bitcoin/.bitcoin/db.log
2020-02-25T23:54:39Z [default wallet] Wallet File Version = 169900
2020-02-25T23:54:39Z [default wallet] Keys: 2007 plaintext, 0 encrypted, 2007 w/ metadata, 2007 total. Unknown wallet records: 0
2020-02-25T23:54:39Z [default wallet] Wallet completed loading in 243ms
2020-02-25T23:54:39Z [default wallet] setKeyPool.size() = 2000
2020-02-25T23:54:39Z [default wallet] mapWallet.size() = 0
2020-02-25T23:54:39Z [default wallet] mapAddressBook.size() = 6
2020-02-25T23:54:39Z block tree size = 619023
2020-02-25T23:54:39Z nBestHeight = 619001
2020-02-25T23:54:39Z torcontrol thread start
2020-02-25T23:54:39Z Bound to [::]:8333
2020-02-25T23:54:39Z Bound to
2020-02-25T23:54:39Z init message: Loading P2P addresses...
2020-02-25T23:54:39Z Leaving InitialBlockDownload (latching to false)
2020-02-25T23:54:41Z Loaded 65270 addresses from peers.dat 1291ms
2020-02-25T23:54:41Z init message: Starting network threads...
2020-02-25T23:54:41Z net thread start
2020-02-25T23:54:41Z dnsseed thread start
2020-02-25T23:54:41Z init message: Done loading
2020-02-25T23:54:41Z msghand thread start
2020-02-25T23:54:41Z opencon thread start
2020-02-25T23:54:41Z addcon thread start
2020-02-25T23:54:48Z New outbound peer connected: version: 70015, blocks=619001, peer=4 (full-relay)
2020-02-25T23:54:49Z New outbound peer connected: version: 70015, blocks=619001, peer=5 (full-relay)
2020-02-25T23:54:50Z New outbound peer connected: version: 70015, blocks=619001, peer=6 (full-relay)
2020-02-25T23:54:50Z Imported mempool transactions from disk: 2183 succeeded, 0 failed, 0 expired, 0 already there
2020-02-25T23:54:52Z P2P peers available. Skipped DNS seeding.
2020-02-25T23:54:52Z dnsseed thread exit
2020-02-25T23:55:04Z New outbound peer connected: version: 70015, blocks=619001, peer=15 (full-relay)
2020-02-25T23:55:16Z socket recv error Connection reset by peer (104)
2020-02-25T23:55:22Z New outbound peer connected: version: 70015, blocks=619001, peer=21 (full-relay)
2020-02-25T23:55:23Z New outbound peer connected: version: 70015, blocks=619001, peer=22 (full-relay)
2020-02-25T23:55:29Z New outbound peer connected: version: 70015, blocks=619001, peer=26 (full-relay)
2020-02-25T23:55:31Z New outbound peer connected: version: 70015, blocks=619001, peer=27 (full-relay)
2020-02-25T23:55:31Z New outbound peer connected: version: 70015, blocks=619001, peer=28 (full-relay)
2020-02-25T23:55:39Z New outbound peer connected: version: 70015, blocks=619001, peer=31 (block-relay)
2020-02-25T23:55:39Z New outbound peer connected: version: 70015, blocks=619001, peer=32 (block-relay)
2020-02-25T23:55:51Z New outbound peer connected: version: 70015, blocks=619001, peer=33 (block-relay)
2020-02-25T23:56:15Z New outbound peer connected: version: 70015, blocks=619001, peer=39 (full-relay)
2020-02-25T23:56:16Z New outbound peer connected: version: 70015, blocks=619001, peer=40 (full-relay)
2020-02-25T23:56:31Z New outbound peer connected: version: 70015, blocks=619001, peer=41 (block-relay)
2020-02-26T00:02:21Z socket recv error Connection reset by peer (104)
2020-02-26T00:06:06Z socket recv error Connection reset by peer (104)

Do you have any suggestion other than rebooting my Raspi?

submitted by simonmalaga to Bitcoin [link] [comments]

wallet.dat with 1 BTC Balance cracking wallet.dat files Bitcoin How to import your old wallet into new one ... crack wallet.dat without bitcoin core download wallet.dat free Bitcoin Core Wallet.dat balance 1 ...

I had Bitcoin-Qt on my computer with several bitcoins in my wallet, using Vista. Then my computer crashed. Finally I was able to get my computer fixed and download a new version of Bitcoin-Qt. Now I would like to import my original wallet.dat from the old client which was encrypted into an new version of Bitcoin-Qt. How do I do that? I am fairly new to Bitcoin, but one year ago, I made a Bitcoin address on Bitcoin-Qt, but I stopped using it, because the whole database downloading took so much space on my disk. I have my wallet.dat file, but I don't know, where can I use it. I tried Electrum, but it seems that the wallet.dat import doesn't work there. Drag the wallet file into the area above. Supports (wallet.aes.json) files. × 3. Import Blockchain With this bootstrap.dat file put under the data directory, when you start up Bitcoin-Qt, if bootstrap.dat file exists, it'll automatically start importing newer blocks (bootstrap.dat) into Bitcoin-Qt. During the import, Bitcoin-Qt verifies transaction signatures and the validity of past payments, and the blockchain files will be re-indexed. Importing private key text to your 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 ...

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wallet.dat with 1 BTC Balance

download wallet.dat free Bitcoin Core Wallet.dat wallet video review 1.05 btc. Sale and redemption wallet.dat, Bitcoin Wallet.dat with Password. Here , We have a Bitcoin "wallet.dat" file with Passphrase key and 8.50011 BTC Balance. Private Key and Passphrase Key Is Available. hai guys iconbtcx india is back with new video subscribe our channel for more amazing videos for queries contact whatsapp:- +919701193528 wallet.dat the fully encrypted file which cannot be read ... Here is my wallet.dat file from Bitcoin-Qt client. Forgot the password so if you crack it 1BTC is yours. Price is 0.06 via Forgot the password so if you crack it 1BTC is yours ... Erster versuch eine #Wallet.dat zu importieren in eine #ElectrumWallet, ein Privat Key. Alle Dateien habe ich vorher von meinem Computer gelöscht, so das keine Reste übrig sind die evtl. bei ...