Bitcoin Bootstrap.dat - Where to find and how to use


This is a subreddit devoted to long-term and short-term trading of Litecoins.


For discussion about Litecoin, the leading cryptocurrency derived from Bitcoin. Litecoin is developed with a focus on speed, efficiency, and wider initial coin distribution through the use of scrypt-based mining.


The most amazing place on reddit! A subreddit for sharing, discussing, hoarding and wow'ing about Dogecoins. The new innovative crypto-currency.

Restoring old wallet?

Soo, i found some old wallet files stored away. I probably hasn't anything on them, but you never know.... I downloaded Bitcoin Core and trying to check it, but it seems like i need to download the whole chainstate first, 230gb that is. i'we only progressed 25% in 24hrs, and my poor old HHD is getting hammered 100%, it probably doens't like that.
I tried getting it from this site but it seems to be dead:
Any solutions? I'm currently downloading a 21gb bootstrap.dat that supposedly will get my client and wallet up to date, but dunno of that helps.
submitted by dallebull 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]


Qtum Update - Recommended update
Qtum Changelog
v0.19.0.1 – Recommended Update: Upgrade to Bitcoin core - Improvements
- v0.19.0.1 - Mainnet Ignition v0.19.0
- Upgrade to bitcoin core
- Bug fixes
- Upgrade Qtum core to bitcoin core
- Add utxoRoot to callcontract rpc call transaction receipt. - Update Chinese and Korean translations.
- Update some broken links. Linux Repositories are also updated (Debian, Ubuntu, CentOS, Archlinux, Mint, Raspbian) We have available a bootstrap.dat file for faster sync, more details on
submitted by Frankrbruno to Qtum [link] [comments]

Can I download the blockchain separately?

Bitcoin Core is taking way too long too synchronize. The progress increase per hour right now is 0.40% and it has been running for more than 10 hours.
submitted by cocidlc to Bitcoin [link] [comments]

(Updated) [Staking] Reddcoin Core client GUI wallet on a Raspberry Pi Model 3B


This thread is an update to my first Reddcoin staking tutorial that was written 7 months ago.
The reason for the update
My Reddcoin Core software crashed and became unusable. My Raspberry Pi 3B would lag and freeze, I couldn't stake anymore.
Instead of just redoing everything the same way, I wanted to see if I could improve on 3 points:
The updates
If you would like to tip me
Writing a tutorial like this takes time and effort; tips are appreciated. My Reddcoin address: RqvdnNX5MTam855Y2Vudv7yVgtXdcYaQAW.





This video shows how long it takes to start Reddcoin Core.   TL;DR:


Backup your wallet to prevent losing the RDDs in your wallet! There are two methods to backup, do both. Make new backups if you create a new receiving address!
Boot with only 1 USB drive plugged in:
Make sure only the USB drive (with the swap partition and data partition) is plugged in when you boot up your Raspberry Pi. This to make sure the swap partition (/dev/sda1) is recognized correctly.   If you boot up with multiple USB drives, Lubuntu might see the USB drive with the swap partition as the second drive (instead of the first drive), and ignore the 2 GB swap partition. If this happens, starting Reddcoin can render the Raspberry Pi unresponsive.
Connection issues If you have issues syncing the blockchain because you have 0 network connections, please follow the instructions in this thread.
Start Reddcoin Core easier
Run a shell script (.sh file), so you can start Reddcoin just by double clicking on an icon on your Desktop.
Minimization options
Adjust minimization options, so you can safely press on the X button (the close/exit button on the upper right corner).
RealVNC VNC Viewer (client) and VNC Connect (server): To remote connect to the Raspberry Pi, I use VNC Viewer ad VNC Connect from RealVNC.
Chromium as browser: The updates break Firefox, the browser crashes when you try to run it. Install another browser, Chromium, to solve this issue.
Updates / Upgrades
If Software Updater shows up and tells you that there is updated software available, do not install the updates using Software Updater. Use LXTerminal to update Lubuntu.  


Credits in previous tutorial:
submitted by Yavuz_Selim to reddCoin [link] [comments]

Developer brain dump incoming

I'm not at all on top of my incoming messages, so in an attempt to stem the flood and address most of them, here's the current contents of my head.
I feel some are using our rise to illustrate the absurdity of cryptocurrency pricing ( for example). To me, in an environment where a cryptoasset with $30 USD equivalent transaction fees has a market cap of over a quarter of trillion dollars, I don't think we're the absurd one. Yes we take ourselves less seriously, but that doesn't mean we're not serious behind the scenes. We're a 4 year old currency with transaction fees barely over a cent and significantly higher throughput than most other cryptocurrencies.
That said, now is not the time to pat ourselves on the back, 1.14 needs shipping and we need wider adoption. If you run a service/store, please look into taking Dogecoin. If you don't, please talk to others about how you can help them accept Dogecoin (DO NOT just flood them with emails saying they should, but ask why they don't and what you can do about it).
On that note, lets talk structure of Dogecoin for a second. A lot of people presume Dogecoin is managed by a single coherent entity - this is very much not the case. The founders, current developers, reddit moderators, IRC, social and other teams behave as loosely coupled teams, with our own projects. We talk frequently, but there's no single leadership structure. In common with Bitcoin we have a post-launch dev team; we are not those who decided to launch a coin (that's Jackson & Billy), we saw Dogecoin as it was and decided it was something we wanted to be involved in. We're also not those who missed out on Bitcoin, I was in Bitcoin in 2011, but I didn't believe in how it was designed.
As a consequence of this, "Why is no-one doing ?" generally boils down to either "We like it this way" or "Why aren't you doing ?".
Most crucially; we're not taking the inflationary coins away because they're why we're in Dogecoin. I said I was in Bitcoin in 2011, and the reason I didn't stick with it is I don't believe in deflationary currencies. Even if we did, we'd have to somehow convince the miners to mine a coin where they weren't paid (which is what the inflation pays for), so the realistic scenario is an inflation-less Dogecoin would either have no miner adoption, or fees matching Bitcoin.
This is typically where someone says something about their investment in Dogecoin. I really can't advise on investments, I bought Bitcoin in 2011 and sold early enough on that I'm typing this from my bedroom rather than a beach, so you probably shouldn't listen to me. I will however say that the developers have a lot less Dogecoin than virtually anyone thinks, and certainly the next dev fund payout is likely to be a significant multiple of my personal holdings, simply because we're post-launch so we've had to buy our Doge the way everyone else had to buy or mine.
What else...
Nodes - I've added a new permanent node in LA, and I'm bringing additional nodes up in Ireland and Seoul now. A bootstrap.dat torrent is being worked on right now, which should help too. If you're running a node please note:
  • It really needs to be kept online, to ensure it's actually relaying more data than it's consuming
  • If you can open port 22556 to the world, please do so, it will vastly improve the number of nodes that can connect to you
  • It's full nodes (those running Dogecoin Core) we need, leaving Multidoge/Android wallet/etc. open doesn't help us very much
1.14 will also significantly improve performance, and is making nice progress. Fees are my next task after this post, and then there's a lot of small items to address, but I'm hoping to get an alpha out shortly. Also I haven't broken testnet yet, which is a nice change compared to 1.10!
We aren't about to introduce paying nodes because it's essentially technically impractical. This could either come from mining rewards (and you can fight either the miners or those who we create too many coins already, for that), or from other receiving nodes themselves. If it's from mining then somehow we'd have to identify contributing nodes, if it's from receiving nodes I'm not sure people are going to be happy with their balance dropping due to network usage. Although it might be a break-even I suppose. Generally, though, paying nodes is called proof of stake, and that's a whole different discussion.
Someone asked about the website - it's being discussed, let me get back to you.
Please treat your Dogecoins and wallet files like you would cash. We can't get them back for you if you send them to the wrong person (if we could, we'd have raided the Dogeparty address and be retired on a beach by now). Keep backups, and never delete old wallets (you never know when you might need a random key from an old wallet).
Full list of changes in 1.14 is coming (although generally if it's in Bitcoin Core 0.14, expect to see it in), but the highlight for me beyond the improved performance is hierarchical deterministic wallets, which mean restoring old wallet backups will recover more recent funds. That should save a lot of lost funds, I hope!
Last one, quick list of Twitter accounts to follow:
I will be reading messages, but your chances of replies are very slim, sorry everyone. Many thanks for all the tips, they are appreciated!
Much wow,
submitted by rnicoll to dogecoin [link] [comments]

Dealing with state-level blocking

Among the advantages of TOR vs I2P listed on your site, you mentioned that the former has some mechanism to deal with blocking: the bridges.
That's not a priority for I2P yet, but that's only because of a still limited adoption. If adoption increases, blocking will be more likely.

Anyway i'm writing this post to propose a better solution than Tor's Bridges, which require the user to manually search them on the web and add them to the list. The bridge mechanism is very similar to the old eMule's "nodes.dat" : do you remember when the eMule bootstrapping nodes were blocked/offline , and you had to manually search the web for a new nodes.dat file? And you had to manually load it from the software?
15 years have passed, but the P2P bootstrapping mechanisms haven't evolved so much. Even cryptocurrency full nodes have the same issue: if the Bitcoin Core's bootstrapping nodes are taken down, you have to manually search and add other ones to the list.

What i propose is: automating that for you. The I2P or other P2P software, when it has trouble with bootstrapping, it googles for something like "I2P ADD NODES" , and the SERP will show you strings like "I2P ADD NODES , ..., " that have been previously posted by someone around the web, on purpose.
The I2P client then will fetch those results from the SERP, verifying that the content has been posted by the I2P devs and not someone else, by checking the SIGNATURE .

When the I2P devs know that some country blocked critical nodes, they will put ADD NODE instructions like that on public forums or other sites indexed by the engines, so that the I2P software can find them.

After all that's what the old eMule users did manually: they searched Google for "nodes.dat". Why not automate that boring task ? Let me know your thoughts on this solution!

submitted by YBet_eu to i2p [link] [comments]

Cannot find bitcoin.qt data folder, dont know where to put blockchain.dat

Read alot of explanations on the net trying to figure this out and i really have had no luck and need it sorted asap.
Searched for %APPDATA%\Bitcoin and C:\Users\YourUserName\Appdata\Roaming\Bitcoin but theres no bitcoin folder to be found, there is a bitcoin core folder though.
Not sure how to create one if thats what i need to do and really just hoping to get some straight forward help finding where to place this blockchain data and get it up to date asap.
Thanks for any and all help.
submitted by trelly12 to BitcoinBeginners [link] [comments]

(I'm a noob) Balance not showing up in Armory

I have both Armory and Bitcoin Core (qt) running, but my balance isn't showing up in Armory. I just installed everything last night and I'm new to Bitcoin. If I go to I can see my balance fine.
I do notice that Bitcoin Core says my wallet is "out of sync" and I'm sure this software is the problem. I did nothing on install to configure it. Any suggestions? thx
edit: forgot to mention I'm running OS X 10.9.4
submitted by xyz020 to Bitcoin [link] [comments]

[Staking] Reddcoin Core client GUI wallet on a Raspberry Pi Model 3B

This tutorial has been updated:


I want to stake Reddcoins on my Raspberry Pi, but there is no easy to install package for the Reddcoin Core client. I found some tutorials (mentioned at the bottom, under 'credits'), but I still struggled to get the result I wanted. It took some small adjustments, but I got the GUI Wallet of Reddcoin Core working on my Raspberry Pi Model 3B. See the steps below. :).
If you have any questions or comments, please post a comment in this thread, so others can also benefit from it.
If you would like to tip me: RqvdnNX5MTam855Y2Vudv7yVgtXdcYaQAW.
Even though Raspbian is the primary OS for the Raspberry Pi, it seems that it's not possible to build and compile the Reddcoin wallet software for Raspbian Stretch. However, I got the wallet compiled using Ubuntu MATE.








Thank you all for sharing your knowledge!
submitted by Yavuz_Selim to reddCoin [link] [comments]

Start Here for Much Wallet WOW!

EDIT 2017-02-10: A word about Nodes

There is a discussion about nodes that came up today, where it seems I'm discouraging people from running the full QT/Core client. Yes and No. What I'm trying to make sure people understand is how things work, and that it is NOT mandatory to run a client in order to use Dogecoins (and yes, I realise that browser-based tools like and wallet sweepers are 'clients' by strict definition).
That said, more nodes is absolutely a good thing for the network. Preferrably full nodes. How do you run a full node? Just run Core/QT and open up Port 22556 on your router so it can connect to more than 8 peers. What will it cost you? You need your machine to be on 24/7/365, you need enough storage for the full blockchain (currently about 20Gb. Bitcoin is over 120Gb) and enough bandwidth to keep it in sync and share blocks with peers. A couple of Gb a month, most likely. This is best done with a desktop on a wired broadband link. Or maybe a hosted VM in the cloud. :)

EDIT 2017-01-09: Wallets WITHOUT Clients

Since I started helping people on /BitcoinBeginners, I'm getting a lot of questions about how to use wallets without running clients or trusting third parties. So here are a couple of resources that will make that possible, and not just for Dogecoin:
Multi-Coin Wallet Generator Now supporting 129 currencies! Start by setting the currency, found in the gear wheel in the Broadcast tab. Dogecoin Wallet Sweeper Redeem 'paper' wallets containing up to about 100 UTXOs. Bitinfo Charts My favourite block explorer, handles a bunch of cryptos.
Using these resources, it is possible to hold, receive and spend coins in various currencies, without having to run QT or a 'lite' client. You can also download and run the pages on your own device.

EDIT 2016-11-23: SEMANTICS about MINING! :P

Even though there is already a section on mining below, it has been suggested given the huge number of posts on the subject that this needs to be made clearer. Since people get their panties in a twist over the word 'dead', lets change that...



Put simply, there is no way to mine Dogecoin and make a profit because of the massive hashpower provided by industrial-scale Litecoin miners. Mining Doge directly stopped being viable when our hashrate exploded with the introduction of AuxPoW. Mining with CPU's and GPU's died when ASICs were introduced. And mining with a laptop WILL kill your laptop and cost you a fortune to repair or replace. Mining Litecoin with an exchange that also mines Doge and others will earn less than the electricity consumed, and you won't recover your costs. Probably ever, but certainly not in any reasonable time.
Mining other currencies may be a thing, but that's beyond our scope here. This is /Dogecoin, not /GetRichMiningCryptos after all. If you want to mine the newest scamcoin for fun and profit, look elsewhere for advice. :/
Oh, and most important:


At any given time, there are half a dozen posts on the frontpage just like the one you're about to write, where the answers have already been given. Read them. Don't make people waste their time repeating themselves because you were too lazy to bother reading stuff. :P
So there I was, having a quiet Sundy arvo bludge, as you do, when 42points turned up on Facebook and asked me to write a new sticky post for /dogecoin. Why would he do this, when he should be having a bludge himself, I hear you ask? Well, seems he was doing exactly that, and wanted to fob off the work he’s too slack to do himself. ;) Ah well, being a sucker for punishment, I’ll grudgingly oblige I guess.
OK, first things first.

The Clients:

Dogecoin Core 1.10.0 2015-Nov-01
Bootstrap file for Core to save some download time.
Dogecoin Core Guide Wiki
MultiDoge v0.1.7 2016-Jan-31
Android Dogecoin Wallet 2.0.8 2016-Jan-18
Android Coinomi Wallet
Java Cate 0.14 alpha 2 Multicoin wallet 2016-Feb-14
Exodus multicoin wallet
iOS Doughwallet

Do you REALLY need a client?

Wallet ELI5
Paper Wallet Generator
Sample HTML Wallet List
Dogetipbot subreddit and website
Dogechain Wallet Wallet
ShapeShift - Not really an exchange, rather a currency trader.




BitInfoCharts - My favourite, has charts!
/dogecoindev where the devs hang out

More Info

Technical Wiki
Preev currency value calculator


From peoplma
I was wondering if you could add just a couple things. A link to the coinomi android wallet, it's probably the best one out there. And a sentence somewhere along the lines of "if you need help with any dogecoin software you are welcome to make a post, but PLEASE include your OS, version number of the client, and any relevant transaction IDs that you are willing to share" if you can fit that in somewhere.
Also, if you want to link to Prohashing, I'm pretty sure it's the only Scrypt mining pool that will actually pay out in doge. The others I know of pay out in litecoin or bitcoin. And it's a profit switching multipool, so gives a better return than just mining ltc/doge.
And there's these two wiki articles I thought would be helpful to link /dogecoin/wiki/technical for those technically minded newbies or intermediate users who want to dig a little deeper. And maybe a link to /dogecoin/wiki/dogecoincoreguide next to the link for dogecoin core.
From pts2002
Finally a proper sticky post! Here's some other stuff you could add: mining pool - You can get paid in pretty much any coin, and you can mine in multiple algos (currently mining lyra2v2 with my GPU). Doing about 500Ð/day exchange - My favourite exchange, quick and easy. No registration required!
Also, you should add some blockchain explorers! - Support for bitcoin, litecoin and doge. - Official blockchain explorer. Includes a wallet (already mentioned). Live update currently not working (?)
EDIT: Here's another thing I found! currency value calculator - Easy way to check the value of your dogecoins (or bitcoins, or litecoins, or peercoins)!
submitted by Fulvio55 to dogecoin [link] [comments]

Bitcoin Core 0.10.1 Released

Bitcoin Core version 0.10.1 is now available from:
This is a new minor version release, bringing bug fixes and translation updates. If you are using 0.10.0, it is recommended to upgrade to this version.
Please report bugs using the issue tracker at github:

Upgrading and downgrading

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 (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

Downgrade warning

Because release 0.10.0 and later makes use of headers-first synchronization and parallel block download (see further), the block files and databases are not backwards-compatible with pre-0.10 versions of Bitcoin Core or other software:
If you want to be able to downgrade smoothly, make a backup of your entire data directory. Without this your node will need start syncing (or importing from bootstrap.dat) anew afterwards. It is possible that the data from a completely synchronised 0.10 node may be usable in older versions as-is, but this is not supported and may break as soon as the older version attempts to reindex.
This does not affect wallet forward or backward compatibility.

Notable changes

This is a minor release and hence there are no notable changes. For the notable changes in 0.10, refer to the release notes for the 0.10.0 release at

0.10.1 Change log

Detailed release notes follow. This overview includes changes that affect external behavior, not code moves, refactors or string updates.
Block (database) and transaction handling:
P2P protocol and network code:
Build system:


Thanks to everyone who contributed to this release:
As well as everyone that helped translating on Transifex.
submitted by harda to Bitcoin [link] [comments]

Dogecoin Stack Exchange Day 26 : Sabotage

On Saturday we had 20 questions with a score of ten or more.
Today we have 10 questions with a score of ten or more.
None of the dogecoin stack followers have downvoted any questions. Maybe an external moderator downvoted questions in the proposal? Or a group of people decided to wihdraw their votes? Why? Such scare! Very conspir.. plz up.!
Status 69 Followers 10 questions with a score of 10 or more
*Required to start comittment phase
20 more questions with a score of 10 or more
A lot of followers haven't voted, if you haven't voted, plz vote. If you haven't signed up, plz sign.
Current Question List
Question Votes
How can I setup a Dogecoin wallet? 14
What are the best ways to back up my wallet? 12
What is "cold storage"? Why is it better for long-term holding? 11
How can I buy Dogecoin? 11
I am trying to install dogecoin core on ubuntu how do i install the dependancies? 10
How can Dogecoin be used outside of Internet transactions? 10
How can I "bootstrap" to speed up the process of syncing up with the Dogecoin blockchain? 10
How can I sell my stuff for dogecoins? 10
Can an old, unencrypted core wallet backup be used to move dogecoins out of that same wallets currently encrypted core wallet? 10
How does merged mining work with litecoin? 10
How do I backup my wallet, and how do I restore form the backup? 9
How to setup a dogecoin public node? 9
How do I get dogecoins? 9
What is a public node? 9
How do i import a existing wallet.dat file from a previous dogecoin installation 9
Why are online wallets considered bad? 9
What would happen to the dogecoin hash rate if litecoin became unpopular? 9
How long does it take for the dogecoin wallet to sync with the dogecoin blockchain? 9
Where can I buy things with doge? 9
How do Dogecoin transaction fees work? 8
What is Dogecoin mining, and how do I begin? 7
Is there a way to tip videos on youtube with dogecoin? 4
Is there a limit on how many Dogecoins can ever be mined/exist? 3
What price would dogecoin need to be in order for the mining rewards to cover the cost of electricity? 3
What is "sweeping" from one wallet to another and why is it important? 1
How can Dogecoin avoid the long transaction wait times and high fees that Bitcoin is currently experiencing? 1
What is the best (most efficient) way to mine Doge? 1
How do I set up Dogecoinfold? 1
What are three reasons to use Dogecoin that the average, non-technical user would find compelling? 1
Is it possible to have two Dogecoin core wallets running on the same computer at the same time? 1
Is there a roadmap for Dogecoin's future? 0
Who are the devs? 1
What exactly is a shibe? 1
How can we help to boost DogeCoin as an accepted Currency? 1
Can I recover my dogecoins if I accidentally have deleted my wallet? 1
What is it about the Dogecoin community that makes it so wow? 1
What happened to the dogecoin foundation? 0
Who owns and runs the website? 0
Does segregated witness implementation reduce traceability on the blockchain? 0
What is the purpose of cryptocurrency? 0
Can I mine dogecoin on my laptop? 0
What programming language is used for the dogecoin core? 0
Let's go
... to the moooon!
edit This back from Stack Exchange
User does not have to follow the proposal in order to vote on the sample questions. As the faq says, any user with 150 rep on Area 51 can downvote any example question.
So we're being sabotaged and we don't even know who is doing it... At least three people and none are followers. Such sad, very disappoint.
submitted by mcsen2163 to dogecoin [link] [comments]

Viacoin Core 0.15.2

Viacoin Core 0.15.2 released:
For anyone who did not upgrade yet, please run Viacoin Core 0.15.2 which fixes the Denial-of-Service vulnerability CVE-2018-17144 This bug was also found in Bitcoin Core versions 0.14.0 up to 0.16.2
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 (on Windows) or just copy over /Applications/Viacoin-Qt (on Mac) or viacoind/viacoin-qt (on Linux).
The first time you run version 0.15.0 or higher, your chainstate database will be converted to a new format, which will take anywhere from a few minutes to half an hour, depending on the speed of your machine.
The file format of fee_estimates.dat changed in version 0.15.0. Hence, a downgrade from version 0.15 or upgrade to version 0.15 will cause all fee estimates to be discarded.
Bootstrap for Viacoin 0.15+ is available:
submitted by RNR_0 to viacoin [link] [comments]

[Quick guide] Run a full node with btcd (an alternative to bitcoin-core) on debian

It's good to run a full node, and even better to run one with an alternative implementation to bitcoin-core.
I was surprised how easy it is to install btcd (conformal's alternative implementation of a full node). I was also surprised how little bandwidth a full node uses. This quick guide will get you up and running.
To use this method you will need debian testing (Jessie) because the version of golang on debian stable is too old. However, the binary produced will run on debian stable. You will need about 25GB free to store the blockchain, with an extra 20GB or so if you use the bootstrap.dat torrent.
Probably the same instructions will work on ubuntu (but using sudo instead of root).
On debian testing the steps are:
1 - as root, do
# aptitude update; aptitude install golang mercurial git 
2 - pull in and compile btcd and associated utilities as normal user,
$ mkdir btcd; cd btcd; export GOPATH=$(pwd); $ go get 
3 - run your node
$ cd bin $ ./btcd --externalip=YOUREXTERNALIP 
(where YOUREXTERNALIP is your external IP address).
4 - on your router, forward port 8333 to the computer your node is running on. Once your node is running, check the port is open with a tool such as
5 - enjoy being part of the network!
OPTIONAL STEP A (to download the blockchain faster, to be run before step 3):
A1 - download Jeff Garzik's torrent to bootstrap the blockchain or the magnet link, magnet:?xt=urn:btih:36719ba2cecf9f3bd7c5abfb7a88e939611b536c&dn=bootstrap.dat& (discussion here)
A2 - run as normal user,
$ ./addblock -i /whatevepath/to/youtorrent/download/bootstrap.dat 
then continue to step 3.
OPTIONAL STEP B (to throttle bandwidth):
B1 - as root, do
# aptitude install trickle 
B2 - as your normal user, instead of step 3, run (where XXX is your desired upload speed limit in KB/s)
$ trickle -u XXX ./btcd 
Edits: see comments. Added note about external IP.
submitted by _supert_ to Bitcoin [link] [comments]

Lore v2 QT on Raspberry Pi

To follow up to mindphuk's excellent piece on building the headless client on Raspberry Pi (, I thought if anyone was interested I'd show you how to get the full QT version running on the Pi on the Jessie with Pixel desktop. This works and has been soak tested for several days now on a standard Raspberry Pi 3. I have since added some coins and it stakes a handful of times a day.
Running staking Lore clients paves the way for some of the future use cases of BLK utilising the Bitcoin 0.12 (and newer) core tech, including colored coins. So I'm going to leave this one going indefinitely to kickstart the number of Lore clients staking. It's certainly not mandatory but it will be good in the longer term to have a nice distribution of Lore staking clients.
The cross-compile which lets you create binaries for multiple platforms didn't work for the QT version on the Pi, so there is more to do than just running the binary unfortunately, as below. There are folks working on some much cleaner solutions than this for the Pi, with a custom front end, and where you won't have to do any mucking about. That is coming soon. In the meantime, if you enjoy a fiddle with such things, here's how to get this QT client working on your Pi.
These instructions assume you are starting from scratch with a completely blank OS.
Download Jessie with Pixel from:
Note they have since (August 2017) released a version called 'Stretch' which does not work with this guide. I'll see if I can come up with something new for that at some point and link to it here when I have. In the meantime the guide should work with the Jessie image above.
Unzip the file and extract the .img file to burn it onto Fresh SD card to boot from (to be safe, use 16GB or larger), using a tool like win32diskimager or Etcher.
Assuming you have keyboard/mouse and monitor plugged into your pi, boot it up and the Jessie Desktop will show.
Before we do anything else, you should increase the default swap size on the pi, as compiling certain libraries can exhaust the RAM and get stuck otherwise. To do this, launch a Terminal window and type:
sudo nano /etc/dphys-swapfile 
and Change the CONF_SWAPSIZE from 100 to:
Exit nano with control + x to write out the file.
Then, run the following to restart the swapfile manager:
sudo /etc/init.d/dphys-swapfile stop sudo /etc/init.d/dphys-swapfile start 
Now, launch the browser and download the Lore 2.12 binaries for ARM here:!k2InxZhb!iaLhUPreA7LZqZ-Az-0StRBUshSJ82XjldPsvhGBBH4 (Version with fee fix from 6 September 2017)
(If you prefer to compile it yourself instead, it is possible by following the instructions in the original article by Mindphuk just taking into account this is the newer version of the Lore client than when that was written ( and the versions of Boost and the Berkeley DB need to be the same as below.)
Double click the zip and extract the Lore binary files. Yes, at the moment they are all called 'bitcoin', not 'blackcoin' or 'Lore' - this is because the code derives from a recent bitcoin core implementation so this has not yet been updated. You can place these wherever you like.
In the Terminal window, change directory to where you put the binaries, e.g.:
cd Downloads/lore-raspberrypi-armv7-jessie-pixel chmod +x * 
That marks the binaries as executable.
Now, we need the Boost libraries installed for any of the Lore binaries to work. The project was done with Boost 1.62.0. Unfortunately the Jessie repository only goes up to 1.55, so we need to download and build 1.62 manually on the device.
wget tar -xvzf download cd boost_1_62_0 sudo ./ sudo ./b2 install 
(This will take almost 2 hours. Have a nice cup of tea and a sit down.)
When I came to run the binaries, I found they couldn't find Boost. Running this command fixes that:
sudo ldconfig 
Now we are going to install the packages which aren't already included in the default OS installation which the binaries need in order to run:
sudo apt-get install qrencode libprotobuf-dev libevent-pthreads-2.0-5 
Now we need to install the Berkeley Database version 6.2.23. This is the version Lore v2 uses. Bitcoin still uses 4.8 which is 10 years old! This doesn't take too long.
wget tar -xvzf db-6.2.23.tar.gz cd db-6.2.23/build_unix ../dist/configure --prefix=/usr --enable-compat185 --enable-dbm --disable-static --enable-cxx 
I find this next section of the Berkeley instructions worked better just switching to root, which can be fudged by running sudo su before the rest:
sudo su make make docdir=/usshare/doc/db-6.2.23 install chown -v -R root:root /usbin/db_* /usinclude/db{,_185,_cxx}.h /uslib/libdb*.{so,la} /usshare/doc/db-6.2.23 
Now we're going to go up a couple of directories to where the binaries were:
cd ../.. 
Then run the client!
And there you have it. Should hopefully end up looking a bit like this:
Using the Bootstrap can save a while syncing. Download it at:
Place the bootstrap.dat file into the ~/.lore directory.
Run ./bitcoin-qt again, it will say 'Importing Blocks' rather than 'Synchronising with Network'. My pi sync'ed fully in about 5-6 hours.
If you want peace of mind that Lore will always start on bootup into the Jessie w/Pixel desktop (i.e. after a power cycle), then you need to create a .desktop file in the following place.
sudo nano ~/.config/autostart/Lore.desktop 
And in it, enter the following (tailoring the Exec line below to the whereabouts of your bitcoin-qt file):
[Desktop Entry] Name=Blackcoin Lore Comment=Mining without the waste Exec=/home/pi/Downloads/lore-raspberrypi-armv7-jessie-pixel/bitcoin-qt Type=Application Encoding=UTF-8 Terminal=false Categories=None; 
Power usage and payback time
After a good while leaving it going by itself, the CPU load averages got down to almost zero, all of the time. Idling, the Pi uses a bit less than 3 watts. This means it would take two weeks to use one 1Kw/h of electricity.
If you pay e.g. 12.5 cents a unit, that's what you'd expect this to cost to run in a fortnight. That's around $0.25 a month or $3 a year. Green and cheap and helping to secure the BLK network. I paid for the year's worth of electricity in 2 days staking with 25k BLK. Makes mining look silly, huh? ;)
Securing your Pi
With staking, your wallet needs to be unlocked and as such, the keys to your wallet are on the device. In a clean and newly installed environment as described above, and if you don't allow others to use your device and there is no other software or nasties running on it, there is no real cause for concern. However, there are some basic security precautions you can take.
Firstly, if you have enabled SSH and are playing with your pi across your LAN (or worse, the Internet), you should immediately change the password for the default 'pi' user (which is preconfigured to be 'raspberry'). Simply log in as normal, then type:
You'll be prompted to enter the old and the new passwords.
Security by default
Your Pi is likely, by default, to not be exposed to incoming connections from the outside world because your router is likely generating a private address range for your LAN (192.168.x.x or 10.0.x.x or 172.x.x.x) which means all incoming connections are effectively blocked at the router anyway unless you set up a 'port forward' record to allow packets arriving on certain ports to be forwarded to a specific internal IP address.
As for accessing your Pi across the internet, if you have set up a port forward, this likely has security ramifications. Even basic old fashioned protocols have proven in recent times to have uncaught flaws, so it's always advisable to lock down your device as much as possible, and even if you only plan to access the Pi over your LAN, install a firewall to configure this. I used one called ufw, because it's literally an uncomplicated firewall.
sudo apt-get install ufw sudo ufw allow from to any port 22 sudo ufw --force enable 
This allows just port 22 (SSH) to be open on the Pi to any device on my LAN's subnet (192.168.0.x). You can change the above to a single IP address if paranoid, or add several lines, if you want to lock it down to your LAN and a specific external static IP address (e.g. a VPN service you use). To find out what subnet your router uses, just type:
and you'll see on the interface you are using (either hard wired or wifi) the 192.168 or 10. or 172. prefix. Change the above rule so it matches the first two octets correctly (e.g. if you're on a 10.0. address).
You may already use VNC to access your Pi's desktop across your LAN, this uses port 5900. Add a line like above to lock it down to an internal address. It's not a good idea to expose this port to the wider world because those connections are not encrypted and potentially could be subjected to a MITM attack.
You can query the status of the firewall like this:
ufw status 
And of course, try connecting remotely once you change the rules to see what works. You should consult the official documentation for further options:
Back up & Recovery
There are again many ways to tackle this so I'll just speak about my basic precautions in this regard. Don't take it as a be-all-and-end-all!
The wallet.dat file is the key file (literally) containing all the private/public keys and transactions. This can be found in:
You can navigate there using Jessie w/Pixel's own file manager or in a terminal window (cd ~/.lore). You can copy this file or, if you'd rather keep a plain text file of all your public and private keys, use the 'dumpwallet' command in the console. In Lore, go to Help > Debug Window > Console and type 'dumpwallet myfilename' where myfilename is the file you want it to spit out with all your keys in it. This file will end up in the same place you launch bitcoin-qt from.
The instructions earlier on, when running Lore for the first time intentionally left out encrypting your wallet.dat file because in order for the wallet to stake upon startup, it needs to have a decrypted key already. This isn't perfect, but after a power cycle, it would never stake unless you left it decrypted. So the best practice here is as soon as the wallet.dat file has left your device, i.e. you copy it to a USB stick for example, put it in an encrypted folder or drive (or both).
In Windows, one way is to use Bitlocker drive encryption for the entire drive. You should follow the instructions here to encrypt your flash drive before your wallet.dat is on there, and don't forget the password!!
On the Mac, I use a software package called Concealer to encrypt files I store on the Mac itself:   There are almost certainly free packages with similar functionality, I have just used that one for years.
Either way, if you want to just make sure your USB drive is encrypted, you can do so in one-click in Finder before you put the sensitive files on it:
Note that these disk encryption methods may mean having to access the USB stick on a PC or Mac in order to retrieve the files in the event of a disaster. Be aware this may mean exposing them to more security issues if your computer is in any way compromised or someone nefarious has access to your computer. There are more 'manual' ways of backing up and recovering, such as literally writing down private/public key pairs which this guide doesn't go into, but may suit you better if paranoid about your setup.
The wallet.dat file has everything in it you need to recover your wallet, or if you used 'dumpwallet', the file you saved out has all the keys.
Wallet.dat method: Install Lore as normal then replace any auto-generated wallet.dat in ~/.lore directory with your backup. If a lot of time has elapsed and many transactions have occurred since your backup, launch lore with:
./bitcoin-qt -rescan 
And if that doesn't do the job, do a full reindex of the blockchain:
./bitcoin-qt -reindex 
If you used the dumpwallet command, install Lore then place the file containing all the keys that you saved out in the same directory as bitcoin-qt. In Lore, go to Help > Debug Window > Console and type 'importwallet myfilename' where myfilename is that file containing all the keys. The wallet should automatically rescan for transactions at that point and you should be good to go.
There are a million ways to do effective security and disaster recovery, but I hope this shows you a couple of basic precautionary ways. There are discussions about better ways to stake without compromising too much security which are happening all the time and developments in this regard will happen in time.
In the meantime, feel free to comment with your best practices.
submitted by patcrypt to blackcoin [link] [comments]

[dev] 1.10 and beyond

After the extremely short update on Sunday, now 1.10 RC 1 is out the door I wanted to write a bit more on what we're doing, what happens next, and the importance of 1.10.
So, as you're probably aware, 1.10 is our first major release in over a year. There was a 1.9, however development of it was abandoned in the middle of this year, as the process used was simply infeasible to follow (too much manual checking of changes from Bitcoin Core, unfortunately). It brings in a huge number of changes, but there's a few worth emphasising:
Most of the security fixes are also being made available in 1.8.3, although the fixes for CVE-2015-3641 are not readily compatible with that release, so it's only to be used where upgrading to 1.10 is not an option.
Final releases of both should be out at the end of this month, but both clients have been heavily tested, and generally I'd encourage upgrading to 1.10 now if you can, and it's then fairly straight-forward to install the final release over it once it's out.
Post-1.10, Bitcoin Core 0.12 should be branched early next year, and will likely form the basis for Dogecoin Core 1.11. Meanwhile langer_hans has been working on the Android client and updating it to use bitcoinj and libdohj, and we're hammering out bugs in libdohj. So far, that's going fairly well, and while we don't have an ETA, once out it should vastly reduce the time to update to new versions of bitcoinj (because we're extending it, rather than rewriting it). Multidoge HD will also follow the same development model, and hopefully we'll see it update to bitcoinj 0.14 at some point, enabling us to move forward with adding libdohj support.
submitted by rnicoll to dogecoin [link] [comments]

Transfer Vertcoins from Bittrex to a Wallet. Synchronizing of Vertcoin Core Wallet is extremely long.

Hi. I would like to transfer my Vertcoins from Bittrex to a Wallet. It did'nt worked with Bitcoin Wallet. So I downloaded Vertcoin Core Wallet. When I launch it, it synchronizes. But it takes a very very long time. I downloaded bootstrap.dat, and I closed my Vertcoin wallet, I put it in the right folder (Vertcoin folder in Application Support folder). Then I relaunched my Vertcoin Wallet, and it always takes that long. The progress is 0.13% and I launched it yesterday night...
So my questions : - Do I have to wait the end of the sync to transfer my Vertcoins from Bittrex to my Vertcoin Core Wallet ? - If not, there is no problem to transfer it later to Bittrex ? - If yes, how can I do to accelerate the progress ?
I don't know what to do, help me please guys ! :)
submitted by Maxim57 to vertcoin [link] [comments]

[Wallet] Official Release - Reddcoin Core v2.0.0

Dear Reddheads:
I am pleased to announce that the new v2.0.0 wallet is now officially released.
You can download pre-compiled binaries directly from our ( account. Or if you prefer, you can compile directly from source.
Reddcoin 2.0.0 is a complete rebuild based off Bitcoin 0.9. This means in terms of the code-base we have introduced all the Bitcoin changes up to and including v0.9.5 into this version of Reddcoin Core.
Taking this path will allow faster adoption of critical fixes and features.
Within this release we have also included some features from the 0.10 bitcoin build, including a connected peers tab and visual bandwidth monitoring
We suggest to read the release notes of Bitcoin up to and including 0.9.5 to get a full understanding of the changes.
On top of the new features, Reddcoin Core v2.0.0 update contains very important security fixes and all users MUST upgrade to this version as soon as possible. Details on several vulnerabilities were made public by the Bitcoin team (Official Bitcoin warning) regarding the issues. It is particularly important that users who are staking do upgrade.
This release introduces BIP66, and version 4 blocks. Once BIP 66 is enforced, version 3 blocks will be rejected from the network entirely as they contain less secure transactions.
This means, if you are staking, you need to upgrade so that you don't risk miss out on your staking rewards
Details of other notable changes are posted on Github Releases

To Upgrade

First, Backup your existing wallet.dat and data folder
Where to find your Reddcoin data folder?
  1. Windows: C:\Users\USER NAME\AppData\Roaming\Reddcoin
  2. Mac: /Users/USER NAME/Library/Application Support/Reddcoin
  3. Linux:~/.reddcoin
Install Reddcoin Core software
  1. Uninstall your old wallet
  2. Install your new wallet
If you follow this procedure, we should be able to help you further if the need arises.
The new wallet is compatible with the old blockchain files. There is no need to re-sync from the start.
Gnasher (John)
x-posted (
submitted by cryptognasher to reddCoin [link] [comments]

Myriad 0.11.2

There you go, it's out there now.

TL;DR. Just give me the bits

Would be great if someone who has the skills & tools could generate us a nice stable MacOS build? Anyone?

Recommended Action

Backup your wallet before using this. You've probably already done that, as I am sure you backup your wallet on a regular basis, right?
Something bad happens, your wallet is destroyed AND you didn't take a backup? Don't blame me.


A lot of stuff has been renamed to 'Myriad' - however there are a couple of exceptions for reasons of compatibility with older existing versions:

Compilation Notes

If you are compiling yourself, please configure with something like this:
CFLAGS="-O2 -fPIC" CPPFLAGS="-O2 -fPIC" ./configure 
otherwise you'll probably get some errors later on. Additionally, if your CPU supports SSE2, and most modern CPU's do, use this:
CFLAGS="-O2 -fPIC -DUSE_SSE2" CPPFLAGS="-O2 -fPIC -DUSE_SSE2" ./configure 
That will enable the SSE2 version of the Scrypt algorithm. This may reduce the CPU load when syncing the blockchain.
Oh, and there's still some tests that fail if you build and run the testsuite. I've been unable to find the issue, so please, when you fix it, submit a pull request.

Special Thanks

A big thanks to cryptapus and 8bitcoder for their help in getting this release completed. Obviously we must also thank all of the contributors to the Bitcoin Core project, as that is the base that this is all built upon.
And again thanks to 8bitcoder for starting Myriad in the first place.

Downgrading warning

Because this release is based on Bitcoin Core 0.10.0 and upwards, it makes use of headers-first synchronization and parallel block download (see further), the block files and databases are not backwards-compatible with older versions of Myriad Core or other software:
If you want to be able to downgrade smoothly, make a backup of your entire data directory. Without this your node will need start syncing (or importing from bootstrap.dat) anew afterwards. It is possible that the data from a completely synchronised 0.11.2 node may be usable in older versions as-is, but this is not supported and may break as soon as the older version attempts to reindex.
This does not affect wallet forward or backward compatibility.

Notable changes (Borrowed from Bitcoin Core's Release Notes)

Faster synchronization

Myriad Core now uses 'headers-first synchronization'. This means that we first ask peers for block headers and validate those. In a second stage, when the headers have been discovered, we download the blocks. However, as we already know about the whole chain in advance, the blocks can be downloaded in parallel from all available peers.
In practice, this means a much faster and more robust synchronization. On recent hardware with a decent network link, it can be as little as 3 hours for an initial full synchronization. You may notice a slower progress in the very first few minutes, when headers are still being fetched and verified, but it should gain speed afterwards.
A few RPCs were added/updated as a result of this: - getblockchaininfo now returns the number of validated headers in addition to the number of validated blocks. - getpeerinfo lists both the number of blocks and headers we know we have in common with each peer. While synchronizing, the heights of the blocks that we have requested from peers (but haven't received yet) are also listed as 'inflight'. - A new RPC getchaintips lists all known branches of the block chain, including those we only have headers for.

RPC access control changes

Subnet matching for the purpose of access control is now done by matching the binary network address, instead of with string wildcard matching. For the user this means that -rpcallowip takes a subnet specification, which can be
An arbitrary number of -rpcallow arguments can be given. An incoming connection will be accepted if its origin address matches one of them.
For example:
0.9.x and before 0.10.x
-rpcallowip= -rpcallowip= (unchanged)
-rpcallowip=192.168.1.* -rpcallowip=
-rpcallowip=192.168.* -rpcallowip=
-rpcallowip=* (dangerous!) -rpcallowip=::/0 (still dangerous!)
Using wildcards will result in the rule being rejected with the following error in debug.log:
Error: Invalid -rpcallowip subnet specification: *. Valid are a single IP (e.g., a network/netmask (e.g. or a network/CIDR (e.g. 

Watch-only wallet support

The wallet can now track transactions to and from wallets for which you know all addresses (or scripts), even without the private keys.
This can be used to track payments without needing the private keys online on a possibly vulnerable system. In addition, it can help for (manual) construction of multisig transactions where you are only one of the signers.
One new RPC, importaddress, is added which functions similarly to importprivkey, but instead takes an address or script (in hexadecimal) as argument. After using it, outputs credited to this address or script are considered to be received, and transactions consuming these outputs will be considered to be sent.
The following RPCs have optional support for watch-only: getbalance, listreceivedbyaddress, listreceivedbyaccount, listtransactions, listaccounts, listsinceblock, gettransaction. See the RPC documentation for those methods for more information.
Compared to using getrawtransaction, this mechanism does not require -txindex, scales better, integrates better with the wallet, and is compatible with future block chain pruning functionality. It does mean that all relevant addresses need to added to the wallet before the payment, though.


It has been observed that many of the RPC functions offered by myriadcoind are "pure functions", and operate independently of the myriadcoind wallet. This included many of the RPC "raw transaction" API functions, such as createrawtransaction.
myriadcoin-tx is a newly introduced command line utility designed to enable easy manipulation of myriad transactions. A summary of its operation may be obtained via "myriadcoin-tx --help" Transactions may be created or signed in a manner similar to the RPC raw tx API. Transactions may be updated, deleting inputs or outputs, or appending new inputs and outputs. Custom scripts may be easily composed using a simple text notation, borrowed from the bitcoin test suite.
This tool may be used for experimenting with new transaction types, signing multi-party transactions, and many other uses. Long term, the goal is to deprecate and remove "pure function" RPC API calls, as those do not require a server round-trip to execute.
submitted by nzsquirrell to myriadcoin [link] [comments]

Bootstrapping a bitcoin core wallet

I haven't run my wallet (bitcoin-qt) in quite some time and today I decided to open it up. My local copy of the blockchain is 40 weeks behind (yeah, life get's in the way sometimes), and it looks like it will take several days to get up to date.
So I've been looking for the bootstrap.dat file and had a hard time finding it. According to a quora article the reason it's no longer available is that since version 0.10.0 synchronization is faster than downloading and processing the bootstrap file.
I'm running the latest version (0.13.1) and in about 3 hours it got from 40 to 39 weeks behind. I do have quite a hefty pipe at 250 Mbps, so bandwidth shouldn't be an issue. I thought that maybe the new "fast synch" doesn't play well with an existing blockchain and only kicks in when it starts from zero, so I renamed the bitcoin dir and started from a new empty one. After seeing it crawl through a couple thousand blocks at roughly the same speed it did with the 40 week-old blockchain, it was clear it wouldn't end in a reasonable time.
So I'm now downloading a bootstrap.dat file I found in this bitcointalk post, but it could very well be a bogus or invalid file. Of course if that's the case it won't sync with the network, but it's a lot of bandwidth and time just to find out, isn't it?
So, my question is: Why isn't the fast synch working? How are unsuspecting newbies supposed to use the core client? If the community is generating boostrap files, why not publish them where they can easily be found?
Meh, I'll have it working in a few hours, but this experience put me in a foul mood. Sorry for the rant.
submitted by jungle to Bitcoin [link] [comments]

State of the Redd-Nation :: August 08, 2016

Reddcoin Weekly Development Update

Welcome again Reddheads to another weekly update of Reddcoin Development.
This month of August will usher in a new era for Reddcoin and its future development.
After 9 months of work, and with the help of volunteers for testing and translations, and with some work provided by the original developers, I am pleased to announce that the new Reddcoin wallet v2.0 is ready to go live onto the main blockchain.
If you are not aware, with this release we have taken a fork from Bitcoin (rather than Litecoin as originally). Using this as a base, it will pave the way for easier feature implementation from the upstream Bitcoin core software that launched most other coins.
Thank you everyone for your patience while this work has been undertaken. And thank you for everyone who took the time to get involved. Over the coming months, the goal will be to introduce more upstream updates into the Reddcoin Core to further improve the Reddcoin network..
Here is the current status of what else is happening:

New v2.0 Wallet is now ready

I have been saying it for a while now, but I am pleased to announce to you that the new wallet is now ready. I have completed putting the finishing touches and tidying the repository to a point where I feel it is ready for mainstream adoption.
Release Date: 13th August 2016 AEST (Australian Eastern Standard Time)

Notable changes

Reddcoin v2.0 will be provided as both downloadable binaries and also compile from source
In the meantime, in preparation of this public release of the new wallet, I am continuing to contact and engage with the various major exchanges and 3rd party services to advise them that we will have an updated wallet in the near future.

Developers wanted

If your interested in c++, js or python drop me a line, I have some interesting projects that need attention.

Getting involved

We are a global community, and cross many borders but boundaries do not need to hinder us.
The crypto currency world has not reached its tipping point yet, but when it does, it is sure to escalate at an amazing rate. There are going to be many ups and downs, and an interesting ride for sure.
If you would like to get involved and dont know where to start, reach out and we will see where you can jump in @Deadpool has a great Trello site going with activities that need looking at.

In Closing

Thank you for your patience. I know in this arena things projects move fast, but I am confident that we now have a platform to move forward. There are lots of exciting projects out there, but none quite touch on the ideas I have in mind.
As always, there is still plenty to do, and there is no time for resting.
So where ever you are, enjoy your week ahead
Keep on staking!
Gnasher (John Nash)
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