Bitcoin Core - Bitcoin Wiki

QuarkCoin Cryptocurrency

Quark is a decentralized digital monetary system. It facilitates sending Quarks to Friends, Family Members Online Payments free of charges and charge-backs. Military Grade Encryption. No Bank or Government Control. Quark coins are based on the original idea of Bitcoin but improved, more secure, faster transaction times and zero fees. With improvements to design and security. There is also a greater coin supply with higher block rewards for miners. Quark is fully Open Source.
[link]

Qtum Official subreddit

Qtum Development and Discussion
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[ANN][ANDROID MINING][AIRDROP] NewEnglandcoin: Scrypt RandomSpike

New England
New England 6 States Songs: https://www.reddit.com/newengland/comments/er8wxd/new_england_6_states_songs/
NewEnglandcoin
Symbol: NENG
NewEnglandcoin is a clone of Bitcoin using scrypt as a proof-of-work algorithm with enhanced features to protect against 51% attack and decentralize on mining to allow diversified mining rigs across CPUs, GPUs, ASICs and Android phones.
Mining Algorithm: Scrypt with RandomSpike. RandomSpike is 3rd generation of Dynamic Difficulty (DynDiff) algorithm on top of scrypt.
1 minute block targets base difficulty reset: every 1440 blocks subsidy halves in 2.1m blocks (~ 2 to 4 years) 84,000,000,000 total maximum NENG 20000 NENG per block Pre-mine: 1% - reserved for dev fund ICO: None RPCPort: 6376 Port: 6377
NewEnglandcoin has dogecoin like supply at 84 billion maximum NENG. This huge supply insures that NENG is suitable for retail transactions and daily use. The inflation schedule of NengEnglandcoin is actually identical to that of Litecoin. Bitcoin and Litecoin are already proven to be great long term store of value. The Litecoin-like NENG inflation schedule will make NewEnglandcoin ideal for long term investment appreciation as the supply is limited and capped at a fixed number
Bitcoin Fork - Suitable for Home Hobbyists
NewEnglandcoin core wallet continues to maintain version tag of "Satoshi v0.8.7.5" because NewEnglandcoin is very much an exact clone of bitcoin plus some mining feature changes with DynDiff algorithm. NewEnglandcoin is very suitable as lite version of bitcoin for educational purpose on desktop mining, full node running and bitcoin programming using bitcoin-json APIs.
The NewEnglandcoin (NENG) mining algorithm original upgrade ideas were mainly designed for decentralization of mining rigs on scrypt, which is same algo as litecoin/dogecoin. The way it is going now is that NENG is very suitable for bitcoin/litecoin/dogecoin hobbyists who can not , will not spend huge money to run noisy ASIC/GPU mining equipments, but still want to mine NENG at home with quiet simple CPU/GPU or with a cheap ASIC like FutureBit Moonlander 2 USB or Apollo pod on solo mining setup to obtain very decent profitable results. NENG allows bitcoin litecoin hobbyists to experience full node running, solo mining, CPU/GPU/ASIC for a fun experience at home at cheap cost without breaking bank on equipment or electricity.
MIT Free Course - 23 lectures about Bitcoin, Blockchain and Finance (Fall,2018)
https://www.youtube.com/playlist?list=PLUl4u3cNGP63UUkfL0onkxF6MYgVa04Fn
CPU Minable Coin Because of dynamic difficulty algorithm on top of scrypt, NewEnglandcoin is CPU Minable. Users can easily set up full node for mining at Home PC or Mac using our dedicated cheetah software.
Research on the first forked 50 blocks on v1.2.0 core confirmed that ASIC/GPU miners mined 66% of 50 blocks, CPU miners mined the remaining 34%.
NENG v1.4.0 release enabled CPU mining inside android phones.
Youtube Video Tutorial
How to CPU Mine NewEnglandcoin (NENG) in Windows 10 Part 1 https://www.youtube.com/watch?v=sdOoPvAjzlE How to CPU Mine NewEnglandcoin (NENG) in Windows 10 Part 2 https://www.youtube.com/watch?v=nHnRJvJRzZg
How to CPU Mine NewEnglandcoin (NENG) in macOS https://www.youtube.com/watch?v=Zj7NLMeNSOQ
Decentralization and Community Driven NewEnglandcoin is a decentralized coin just like bitcoin. There is no boss on NewEnglandcoin. Nobody nor the dev owns NENG.
We know a coin is worth nothing if there is no backing from community. Therefore, we as dev do not intend to make decision on this coin solely by ourselves. It is our expectation that NewEnglandcoin community will make majority of decisions on direction of this coin from now on. We as dev merely view our-self as coin creater and technical support of this coin while providing NENG a permanent home at ShorelineCrypto Exchange.
Twitter Airdrop
Follow NENG twitter and receive 100,000 NENG on Twitter Airdrop to up to 1000 winners
Graphic Redesign Bounty
Top one award: 90.9 million NENG Top 10 Winners: 500,000 NENG / person Event Timing: March 25, 2019 - Present Event Address: NewEnglandcoin DISCORD at: https://discord.gg/UPeBwgs
Please complete above Twitter Bounty requirement first. Then follow Below Steps to qualify for the Bounty: (1) Required: submit your own designed NENG logo picture in gif, png jpg or any other common graphic file format into DISCORD "bounty-submission" board (2) Optional: submit a second graphic for logo or any other marketing purposes into "bounty-submission" board. (3) Complete below form.
Please limit your submission to no more than two total. Delete any wrongly submitted or undesired graphics in the board. Contact DISCORD u/honglu69#5911 or u/krypton#6139 if you have any issues.
Twitter Airdrop/Graphic Redesign bounty sign up: https://goo.gl/forms/L0vcwmVi8c76cR7m1
Milestones
Roadmap
NENG v1.4.0 Android Mining, randomSpike Evaluation https://github.com/ShorelineCrypto/NewEnglandCoin/releases/download/NENG_2020_Q3_report/NENG_2020_Q3_report.pdf
RandomSpike - NENG core v1.3.0 Hardfork Upgrade Proposal https://github.com/ShorelineCrypto/NewEnglandCoin/releases/download/2020Q1_Report/Scrypt_RandomSpike_NENGv1.3.0_Hardfork_Proposal.pdf
NENG Security, Decentralization & Valuation
https://github.com/ShorelineCrypto/NewEnglandCoin/releases/download/2019Q2_report/NENG_Security_Decentralization_Value.pdf
Whitepaper v1.0 https://github.com/ShorelineCrypto/NewEnglandCoin/releases/download/whitepaper_v1.0/NENG_WhitePaper.pdf
DISCORD https://discord.gg/UPeBwgs
Explorer
http://www.findblocks.com/exploreNENG http://86.100.49.209/exploreNENG http://nengexplorer.mooo.com:3001/
Step by step guide on how to setup an explorer: https://github.com/ShorelineCrypto/nengexplorer
Github https://github.com/ShorelineCrypto/NewEnglandCoin
Wallet
Android with UserLand App (arm64/armhf), Chromebook (x64/arm64/armhf): https://github.com/ShorelineCrypto/NewEnglandCoin/releases/tag/v1.4.0.5
Linux Wallet (Ubuntu/Linux Mint, Debian/MX Linux, Arch/Manjaro, Fedora, openSUSE): https://github.com/ShorelineCrypto/NewEnglandCoin/releases/tag/v1.4.0.3
MacOS Wallet (10.11 El Capitan or higher): https://github.com/ShorelineCrypto/NewEnglandCoin/releases/tag/v1.4.0.2
Android with GNUroot on 32 bits old Phones (alpha release) wallet: https://github.com/ShorelineCrypto/NewEnglandCoin/releases/tag/v1.4.0
Windows wallet: https://github.com/ShorelineCrypto/NewEnglandCoin/releases/tag/v1.3.0.1
addnode ip address for the wallet to sync faster, frequently updated conf file: https://github.com/ShorelineCrypto/cheetah_cpumineblob/mastenewenglandcoin.conf-example
How to Sync Full Node Desktop Wallet https://www.reddit.com/NewEnglandCoin/comments/er6f0q/how_to_sync_full_node_desktop_wallet/
TWITTER https://twitter.com/newenglandcoin
REDDIT https://www.reddit.com/NewEnglandCoin/
Cheetah CPU Miner Software https://github.com/ShorelineCrypto/cheetah_cpuminer
Solo Mining with GPU or ASIC https://bitcointalk.org/index.php?topic=5027091.msg52187727#msg52187727
How to Run Two Full Node in Same Desktop PC https://bitcointalk.org/index.php?topic=5027091.msg53581449#msg53581449
ASIC/GPU Mining Pools Warning to Big ASIC Miners Due to DynDiff Algo on top of Scrypt, solo mining is recommended for ASIC/GPU miners. Further more, even for mining pools, small mining pool will generate better performance than big NENG mining pool because of new algo v1.2.x post hard fork.
The set up configuration of NENG for scrypt pool mining is same as a typical normal scrypt coin. In other word, DynDiff on Scrypt algo is backward compatible with Scrypt algo. Because ASIC/GPU miners rely on CPU miners for smooth blockchain movement, checkout bottom of "Latest News" section for A WARNING to All ASIC miners before you decide to dump big ASIC hash rate into NENG mining.
(1) Original DynDiff Warning: https://bitcointalk.org/index.php?topic=5027091.msg48324708#msg48324708 (2) New Warning on RandomSpike Spike difficulty (244k) introduced in RandomSpike served as roadblocks to instant mining and provide security against 51% attack risk. However, this spike difficulty like a roadblock that makes big ASIC mining less profitable. In case of spike block to be mined, the spike difficulty immediately serve as base difficulty, which will block GPU/ASIC miners effectively and leave CPU cheetah solo miners dominating mining almost 100% until next base difficulty reset.
FindBlocks http://findblocks.com/
CRpool http://crpool.xyz/
Cminors' Pool http://newenglandcoin.cminors-pool.com/
SPOOL https://spools.online/
Exchange
📷
https://shorelinecrypto.com/
Features: anonymous sign up and trading. No restriction or limit on deposit or withdraw.
The trading pairs available: NewEnglandcoin (NENG) / Dogecoin (DOGE)
Trading commission: A round trip trading will incur 0.10% trading fees in average. Fees are paid only on buyer side. buy fee: 0.2% / sell fee: 0% Deposit fees: free for all coins Withdraw fees: ZERO per withdraw. Mining fees are appointed by each coin blockchain. To cover the blockchain mining fees, there is minimum balance per coin per account: * Dogecoin 2 DOGE * NewEnglandcoin 1 NENG
Latest News Aug 30, 2020 - NENG v1.4.0.5 Released for Android/Chromebook Upgrade with armhf, better hardware support https://bitcointalk.org/index.php?topic=5027091.msg55098029#msg55098029
Aug 11, 2020 - NENG v1.4.0.4 Released for Android arm64 Upgrade / Chromebook Support https://bitcointalk.org/index.php?topic=5027091.msg54977437#msg54977437
Jul 30, 2020 - NENG v1.4.0.3 Released for Linux Wallet Upgrade with 8 Distros https://bitcointalk.org/index.php?topic=5027091.msg54898540#msg54898540
Jul 21, 2020 - NENG v1.4.0.2 Released for MacOS Upgrade with Catalina https://bitcointalk.org/index.php?topic=5027091.msg54839522#msg54839522
Jul 19, 2020 - NENG v1.4.0.1 Released for MacOS Wallet Upgrade https://bitcointalk.org/index.php?topic=5027091.msg54830333#msg54830333
Jul 15, 2020 - NENG v1.4.0 Released for Android Mining, Ubuntu 20.04 support https://bitcointalk.org/index.php?topic=5027091.msg54803639#msg54803639
Jul 11, 2020 - NENG v1.4.0 Android Mining, randomSpike Evaluation https://bitcointalk.org/index.php?topic=5027091.msg54777222#msg54777222
Jun 27, 2020 - Pre-Announce: NENG v1.4.0 Proposal for Mobile Miner Upgrade, Android Mining Start in July 2020 https://bitcointalk.org/index.php?topic=5027091.msg54694233#msg54694233
Jun 19, 2020 - Best Practice for Futurebit Moonlander2 USB ASIC on solo mining mode https://bitcointalk.org/index.php?topic=5027091.msg54645726#msg54645726
Mar 15, 2020 - Scrypt RandomSpike - NENG v1.3.0.1 Released for better wallet syncing https://bitcointalk.org/index.php?topic=5027091.msg54030923#msg54030923
Feb 23, 2020 - Scrypt RandomSpike - NENG Core v1.3.0 Relased, Hardfork on Mar 1 https://bitcointalk.org/index.php?topic=5027091.msg53900926#msg53900926
Feb 1, 2020 - Scrypt RandomSpike Proposal Published- NENG 1.3.0 Hardfork https://bitcointalk.org/index.php?topic=5027091.msg53735458#msg53735458
Jan 15, 2020 - NewEnglandcoin Dev Team Expanded with New Kickoff https://bitcointalk.org/index.php?topic=5027091.msg53617358#msg53617358
Jan 12, 2020 - Explanation of Base Diff Reset and Effect of Supply https://www.reddit.com/NewEnglandCoin/comments/envmo1/explanation_of_base_diff_reset_and_effect_of/
Dec 19, 2019 - Shoreline_tradingbot version 1.0 is released https://bitcointalk.org/index.php?topic=5121953.msg53391184#msg53391184
Sept 1, 2019 - NewEnglandcoin (NENG) is Selected as Shoreline Tradingbot First Supported Coin https://bitcointalk.org/index.php?topic=5027091.msg52331201#msg52331201
Aug 15, 2019 - Mining Update on Effect of Base Difficulty Reset, GPU vs ASIC https://bitcointalk.org/index.php?topic=5027091.msg52169572#msg52169572
Jul 7, 2019 - CPU Mining on macOS Mojave is supported under latest Cheetah_Cpuminer Release https://bitcointalk.org/index.php?topic=5027091.msg51745839#msg51745839
Jun 1, 2019 - NENG Fiat project is stopped by Square, Inc https://bitcointalk.org/index.php?topic=5027091.msg51312291#msg51312291
Apr 21, 2019 - NENG Fiat Project is Launched by ShorelineCrypto https://bitcointalk.org/index.php?topic=5027091.msg50714764#msg50714764
Apr 7, 2019 - Announcement of Fiat Project for all U.S. Residents & Mobile Miner Project Initiation https://bitcointalk.org/index.php?topic=5027091.msg50506585#msg50506585
Apr 1, 2019 - Disclosure on Large Buying on NENG at ShorelineCrypto Exchange https://bitcointalk.org/index.php?topic=5027091.msg50417196#msg50417196
Mar 27, 2019 - Disclosure on Large Buying on NENG at ShorelineCrypto Exchange https://bitcointalk.org/index.php?topic=5027091.msg50332097#msg50332097
Mar 17, 2019 - Disclosure on Large Buying on NENG at ShorelineCrypto Exchange https://bitcointalk.org/index.php?topic=5027091.msg50208194#msg50208194
Feb 26, 2019 - Community Project - NewEnglandcoin Graphic Redesign Bounty Initiated https://bitcointalk.org/index.php?topic=5027091.msg49931305#msg49931305
Feb 22, 2019 - Dev Policy on Checkpoints on NewEnglandcoin https://bitcointalk.org/index.php?topic=5027091.msg49875242#msg49875242
Feb 20, 2019 - NewEnglandCoin v1.2.1 Released to Secure the Hard Kork https://bitcointalk.org/index.php?topic=5027091.msg49831059#msg49831059
Feb 11, 2019 - NewEnglandCoin v1.2.0 Released, Anti-51% Attack, Anti-instant Mining after Hard Fork https://bitcointalk.org/index.php?topic=5027091.msg49685389#msg49685389
Jan 13, 2019 - Cheetah_CpuMiner added support for CPU Mining on Mac https://bitcointalk.org/index.php?topic=5027091.msg49218760#msg49218760
Jan 12, 2019 - NENG Core v1.1.2 Released to support MacOS OSX Wallet https://bitcointalk.org/index.php?topic=5027091.msg49202088#msg49202088
Jan 2, 2019 - Cheetah_Cpuminer v1.1.0 is released for both Linux and Windows https://bitcointalk.org/index.php?topic=5027091.msg49004345#msg49004345
Dec 31, 2018 - Technical Whitepaper is Released https://bitcointalk.org/index.php?topic=5027091.msg48990334#msg48990334
Dec 28, 2018 - Cheetah_Cpuminer v1.0.0 is released for Linux https://bitcointalk.org/index.php?topic=5027091.msg48935135#msg48935135
Update on Dec 14, 2018 - NENG Blockchain Stuck Issue https://bitcointalk.org/index.php?topic=5027091.msg48668375#msg48668375
Nov 27, 2018 - Exclusive for PC CPU Miners - How to Steal a Block from ASIC Miners https://bitcointalk.org/index.php?topic=5027091.msg48258465#msg48258465
Nov 28, 2018 - How to CPU Mine a NENG block with window/linux PC https://bitcointalk.org/index.php?topic=5027091.msg48298311#msg48298311
Nov 29, 2018 - A Warning to ASIC Miners https://bitcointalk.org/index.php?topic=5027091.msg48324708#msg48324708
Disclosure: Dev Team Came from ShorelineCrypto, a US based Informatics Service Business offering Fee for service for Coin Creation, Coin Exchange Listing, Blockchain Consulting, etc.
submitted by honglu69 to NewEnglandCoin [link] [comments]

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

Intro

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.
     

Overview

 

Steps

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     

Video

https://www.youtube.com/watch?v=Snr5e8bzftI
This video shows how long it takes to start Reddcoin Core.   TL;DR:
     

Extra

Backup
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:

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

What is up with all these Bitcoin devs who think that their job includes HARD-CODING CERTAIN VALUES THAT ARE SUPPOSED TO BE USER-CONFIGURABLE (eg: "seed servers")?

Recently, the developer of SegWit2x / BTC1, Jeff Garzik, caused some controversy by hard-coding the "seed servers" which Bitcoin uses to first start hunting for "peers".
Worse than that: apparently one of the "seeds" is a company he started, variously named Chainalysis / Skry / Bloq - which apparently specializes in de-anonymizing Bitcoin transactions and performing KYC/AML - and which also has apparently entered into agreements with Interpol.
Seriously, WTF???
This is what "Bitcoin devs" still consider to be part of their "job" - hard-coding parameters like this, which affect everyone else on the network - and which could easily be "exposed" to be made user-configurable - instead of being baked into the source code and requiring a friggin' recompile to change???
This recent event has refocused attention on the fact all these past years, most of these seed servers in "the" existing (legacy) client running on most of the network have _also been hard-coded - to domains under the control of "devs associated with Blockstream".
I don't like the list of seed servers in Bitcoin Core
Pieter Wuille - does not support BIP148 - works for Blockstream
Matt Corallo - does not support BIP148 - works for Blockstream
Luke Dashjr - supports BIP148 - works for Blockstream
Christian Decker - supports BIP148 - works for Blockstream
Jonas Schnelli - supports BIP148
Peter Todd - supports BIP148 - worked for Samson Mow who works for Blockstream
https://np.reddit.com/btc/comments/6nd50h/i_dont_like_the_list_of_seed_servers_in_bitcoin/
The corporate takeover of bitcoin illustrated in 1 commit
In The corporate takeover of bitcoin illustrated in 1 commit a user complains that btc1 changing the seed servers to servers run by some companies (see commit) equals a "corporate takeover of bitcoin". I never really took much care who runs these seed server, although they do posses a certain power over the network as correctly pointed out by P. Todd in the same thread:
...and the key thing with that is being able to control what nodes a node connects to can be a very powerful tool to attack new nodes, as it lets you prevent a node from learning about the valid chain with the most work.
[...]
4 out of 5 people running the bitcoin networks seed servers are directly associated with Blockstream!
I don't even believe that Blockstream is actually plotting an evil, forceful takeover of bitcoin using the seed servers. However it beautifully counteracts Adam's "decentralization is everything" arguments. What is most troublesome to me, is that this simple information is not allowed to appear on r\bitcoin at all.
https://np.reddit.com/btc/comments/6n8vqc/the_corporate_takeover_of_bitcoin_illustrated_in/
Seriously?
Bitcoin is almost 9 years old - and most people are still running clients which use hard-coded values (which require an inconvenient recompile to reconfigure) for the "seed servers"??
Maybe this is, in some sense, part of the reason why people like BlueMatt and Luke-Jr and Pieter Wiulle think they can lord it over us and tell everyone else what to do? ...because they have quietly (and unfairly / incompetently) hard-coded their own friggin' server domain names directly into everyone else's client code, as our "seed servers"?
Is the low level of "quality" we - as a community - have become accustomed to from our devs?
Do other clients (Bitcoin Classic, Bitcoin Unlimited and Bitcoin ABC) also gratuitously hard-code their "seed servers" like this?
Here's a post from a year ago regarding "seed servers" in Classic:
How come "classic" uses the same alert keys/DNS seeds as Core?
https://np.reddit.com/btc/comments/44atsp/how_come_classic_uses_the_same_alert_keysdns/
Meanwhile, here's the main question:
Why are any "serious" Bitcoin clients still "gratuitously" hard-coding any values like this?
Why has our "ecosystem" / "community" not naturally evolved to the point where we have some public "wiki" pages listing all the "good" (community-recognized, popular) seed servers - and every user configures their own client software by choosing who they want from this list?
(Maybe because we've been distracted by bullshit for these past few years, fighting with these very same devs because they've refused provide any support for users who want bigger blocks?)
What would users have to do if (God forbid) something were to happen to the servers of those 4-5 seed servers which are currently hard-coded into nearly everyone's clients?
In that situation (assuming some "new" seed servers quickly appeared) people would be have two options:
  • Edit their C++ source code and download/install a (trusted, verified) C++ compiler (if they don't already have one), and recompile the friggin' code; or
  • Wait until new binaries got posted online - and download them (and verify them).
Seriously?
This unnecessary "centralization point" (or major inconvenience / bottleneck) has been sitting in our code this entire time - while these supposedly knowledgeable devs keep beating us over their head with their mantra of "decentralization" - which they have actually been doing so little to maximize?
Psycho-Socio-Economic Side Bar
Serious (but delicate/senstive) question: How many of these "devs" have developed (possibly unconscious?) behaviors in life where they try to make users dependent on them?
"Vendor lock-in" is a thing - a very bad thing, which certain Bitcoin devs have exhibited a tendency to inflict on users - in many cases due to rather obvious (psychological, social, and/or economic) reasons.
We should gently (but firmly) reject these tendencies whenever any dev exhibits them.
Our community should expect and demand an accessible, user-friendly interface for all user-configurable parameters - to maximize decentralization and autonomy
  • In "command-line" versions of the client program, these kind of parameters should be:
    • in a separate config file - using some ultra-simple, standard format such as YAML or JSON
    • also configurable via options (eg, --seed-server) upon invocation on the command-line
  • In GUI versions version of the client program (using some popular cross-platform standard such as Qt, HTML, etc.) these kind of parameters should be exposed as user-configurable options.
Yes, these user-configurable values for things like "seed servers" (or "max blocksize") could come pre-configured to "sensible defaults - so that the software will work "out of the box" (immediately upon downloading and installing) - with no initial configuration required by the user.
Yes: Even the blocksize has always been user-configurable - but most users don't know this, because most devs have been hiding this fact from us.
Three recent posts by u/ForkiusMaximus explained how Adjustable-Blocksize-Cap (ABC) Bitcoin clients shatter this illusion:
Adjustable-blocksize-cap (ABC) clients give miners exactly zero additional power. BU, Classic, and other ABC clients are really just an argument in code form, shattering the illusion that devs are part of the governance structure.
https://np.reddit.com/btc/comments/614su9/adjustableblocksizecap_abc_clients_give_miners/
Adjustable blocksize cap (ABC) is dangerous? The blocksize cap has always been user-adjustable. Core just has a really shitty inferface for it.
https://np.reddit.com/btc/comments/617gf9/adjustable_blocksize_cap_abc_is_dangerous_the/
Clearing up Some Widespread Confusions about BU
https://np.reddit.com/btc/comments/602vsy/clearing_up_some_widespread_confusions_about_bu/
Note about Bitcoin ABC vs Bitcoin Unlimited:
There is a specific new Bitcoin client called Bitcoin ABC, which functions similar to Bitcoin Unlimited - with the important difference that Bitcoin ABC is _guaranteed to hard-fork to bigger blocks on August 1_.
(Please correct me if I'm wrong about this. Documentation for the behavior of these various hard-forks is currently still rather disorganized :-)
All serious devs should be expected to provide code which does not require a "recompile" to change these "initial, sensible" default parameters.
I mean - come on. Even back in the 80s people had "*.INI" files on DOS and Windows.
Nearly all users understand and know how to set user-configurable values - for decades.
How many people are familiar with using a program which has a "Preferences" screen? (Sometimes you may have to close and re-open the program in order for your new preferences to take effect.) This is really basic, basic functionality which nearly all software provides via a GUI (and or config file and/or command-line options).
And nearly all devs have been offering this kind of functionality - in either command-line parameters, config files, and/or graphic user interfaces (GUIs).
Except most Bitcoin devs.
The state of "software development" for Bitcoin clients seems really messed up in certain ways like this.
As users, we need to start demanding simple, standard features in our client software - such as accessible, user-friendly configurability of parameter values - without the massive inconvenience of a recompile.
What is a "Bitcoin client"?
After nearly 9 years in operation, our community should by now have a basic concept or definition of what a "Bitcoin client" is / does - probably something along the lines of:

A Bitcoin client is a device for reading (and optionally appending to) the immutable Bitcoin Blockchain.

Based on that general concept / definition, a program which does all of the above and also gratuitously "hard-codes" a bunch of domain names for "seed servers" is not quite the same thing as a "a Bitcoin client".
Such an "overspecialized" client actually provides merely a subset of the full functionality of a true "Bitcoin client", eg:
  • An "overspecialized" client only enables connecting to certain "seed servers" upon startup (in accordance with the "gratuitous opinion" of the dev who (mis)translated the community's conceptual specifications to C++ code)
  • An "overspecialized" client only enables mining blocks less that a certain size (in accordance with the "gratuitous opinion" of the dev who (mis)translated the community's conceptual specifications to C++ code)
One of the main problems with nearly all Bitcoin clients developed so far is that they are gratuitously opinionated: they "gratuitously" hard-code particular values (eg, "max blocksize", "seed servers") which are not part of the whitepaper, and not part of the generally accepted definition of a "Bitcoin client".
This failure on the part of devs to provide Bitcoin clients which behave in accordance with the community's specification of "Bitcoin clients" is seriously damaging Bitcoin - and needs to be fixed as soon as possible.
Right now is a good opportunity - with so many new Bitcoin clients popping up, as the community prepares to fork.
All devs working on various Bitcoin client software offerings need to wake up and realize that there is about to be a major battle to find out which Bitcoin client software offering performs "best" (in the user-interface sense - and ultimately in the economic sense) at:

reading (and optionally appending to) the immutable Bitcoin Blockchain

The Bitcoin client software offerings which can optimally (and most simply and securely :-) "satisfy" the above specification (and not merely some gratuitously overspecialized "subset" of it) will have the most success.
submitted by ydtm to btc [link] [comments]

Bitcoin Core (Bitcoin-qt) issue I need help troubleshooting.

Issue: How to change the directory for storing the blockchain when bitcoin-qt won't open because it can't access where it currently thinks the blockchain is being stored. Any help with the error message at the bottom of this post.
Background: I have been downloading the blockchain so I could try playing around with a raspi. I have been having less than <0.2% progress trending towards 0.02% and I have determined that bandwidth access is not the issue (no spike in progress speed when I hook up a LAN line.) So I thought that maybe the issue was read/write speeds on my external hard drive so I copied the files onto my internal hard drive. Unfortunately Bitcoin-QT still wants to aim at my external hard drive even if I move it. I thought I had fixed it because it gave me the option to change the address after removing the external but now it says unable to access the address and that bitcoin core is already running. Since I cannot even open the client right now I'm at a loss for changing the directory for storing the blockchain.
OS: Windows 10
Bitcoin-QT vs 0.16.0.0
Edit: I was able to recreate the problem by copying the files again and deleting the old copy. The error message is, "Cannot obtain a lock on . Bitcoin core is probably already running." I sifted through my Task Manager and made sure no other bitcoin programs were running at this time.
submitted by Nursing_guy to BitcoinBeginners [link] [comments]

[Meta] The Libgen/Sci-hub thread: How-to's, updates, and news

Greetings, scholars!

Please leave suggestions, edits, tips, etc. in the comments or PM me.
Libgen’s shakeup the last few weeks has prompted the creation of this post as a reference thread for news and updates regarding the current state of affairs. We rely on the community for most of the Libgen news, so please comment here if you have any so that we can integrate it. Additionally, Libgen and Sci-hub user guides are (will be) posted below as comments which will be permalinked on the sidebar. Feel free to share these links with requesters who are not familiar with Libgen/Sci-hub.
With the increased difficulty (albeit not much for seasoned users) and uncertainty of accessing Libgen, we should remember that /scholar began promoting their use only ~a year ago. As a fulfiller, you’re welcome to use whatever means of sharing you please, but please be considerate of those who have not used these services before and help them be successful. Of course it is your choice to directly upload articles via file hosting services, or suggest that a requester retrieve the article via Libgen/Sci-hub, but please be kind with your suggestions. The purpose of this subreddit remains unchanged: to (quickly) share knowledge with those in need. A giant THANK YOU to all those who have helped their brethren!

Libgen status: Online (as of Apr 23, 2016) - Please consider making a donation for a new mirror

As of 7/21/15, the "Scientific articles" button appears to be gone from the main Libgen pages.
As far as I know, each of these links searches the same database.
Libgen servers are blocking USA IP addresses. The easiest way around this is to use the .unblocked domain; i.e. https://libgen.unblocked.li for articles and https://libgen.unblocked.li/scimag for books. For a more streamlined solution, use free VPN service like betternet VPN (chrome:firefox) or Zenmate (chrome:firefox) to access. Zenmate is recommended because you can choose your country of proxy. You can also try hidebux or use the Tor browser. See this post for more discussion. UK IPs will not serve Libgen requests, but UKers can still access Libgen (I believe, correct me here) via http://gen.lib.rus.ec/ See this post for more discussion.

Sci-hub status: Online, but note new domains (as of Apr 22, 2016) .

From Sci-Hub: URGENT! The blocking of Sci-Hub domains is ongoing. It is very likely that soon sci-hub.io address will stop working. Yes, we have another addresses to move on. But there is a better solution. You can simply specify 31.184.194.81 as one of your DNS servers in your computer network settings. Any domain will work then regardless of any blocking. How to do this? There is an instruction available for OpenDNS, however you can use it for Sci-Hub too. Just type in 31.184.194.81 instead of 208.67.222.222. At the university, you can also ask computer network administrators to configure this DNS server for Sci-Hub domains. This operation will revive even for old addresses: sci-hub.org, sci-hub.club and others. Please share this information to all interested parties, and Best regards!
Sci-hub may require proxy for US users.

News

Journal Article featuring (in part) /scholar
How Piracy Became a Cause Celebre in the World of Academics June 2016
Elsevier still pissed and frustrated with sci-hub May 2016
Who's downloading pirated papers? Everyone Apriil 2016
Should all research papers be free? (NY Times) March 2016
(US) Court Orders Shutdown of (Russian-hosted) Libgen, Bookfi, and Scihub. November 4, 2015.
A provocative piece in the Guardian predicting an academic ‘Biblioleaks’ and a further analysis of that article. August 13, 2015.
Court case filed in New York: Elsevier vs Sci-hub et. al
Libgen goes down due to legal pressure - June 22, 2015
Libgen sued by Elsevier - June 9, 2015

Other Libgen/Sci-hub Links

Sci-hub applet for Chrome and Firefox and examples on how to use it.
Official DevForums (in Russian)
Info about Libgen from its forum
Donate to libgen: bitcoin 1ENFY4h7ntGZbqwcwpQtXVFJrPnfXRHQLe
Donate to Sci-hub: paypal [removed] or bitcoin 1K4t2vSBSS2xFjZ6PofYnbgZewjeqbG1TM
Torrents:
Articles torrents
Books torrents
submitted by paper_fairy to Scholar [link] [comments]

Use The CBANX Bitcoin Wallet & Keep Your Digital Assets Safe!

Use The CBANX Bitcoin Wallet & Keep Your Digital Assets Safe!

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Download the CBANX BTC wallet and keep your Bitcoin safe! CBANX Exchange is the prime platform for registered users to buy or sell BTC via a web or mobile app (Android and iOS) for storage in their Bitcoin wallet. Register at www.CBANX.com to start trading right now!
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submitted by Cbanx_CryptoExchange to u/Cbanx_CryptoExchange [link] [comments]

[Social X] Architecture of A Decentralised System for Social Payment and Services

Dear fellow Reddheads:
It's been a month since the successful launch of PoSV, which marked the end of stage one of Reddcoin project. There were three main goals for stage one:
  1. fair distribution of Reddcoin to common users (tipping), miners (mining) and investors (IPCO).
  2. an innovative algorithm to secure the network and encourage ownership, participation and decentralisation (PoSV).
  3. to build out a team of super talented and trustworthy developers.
The three goals have all been achieved so it's time for us to enter stage two: the buildout of services to make Reddcoin actually useful. This is what Social X is meant for. I'm still polishing the whitepaper to make it live up to my own self-imposed high standard, but I think the time is right for me to unveil it in broad strokes. There are three main problems Social X aims to solve.

Social X: why are wallets so difficult to use?

To achieve wide adoption of Reddcoin (or any cryptocurrency) by the non-tech-savvy general public, wallets must solve the following issues:
Ever increasing blockchain size discourages users from running full-blown wallets. It takes too much time and efforts to install or repair. A common user tends to find the process frustrating or even impenetrable and is forced to either give up adoption or rely on 3rd-party service providers (e.g. exchanges, wallets using ReddAPI) to take full control of her fund. Blockchain size grows everyday and grows faster with wider adoption.
Current wallets generate private keys randomly. As a user engages in staking or normal transactions, she has to back up wallet.dat file periodically to make sure all newly generated private keys are backed up. If wallet.dat file is corrupted or lost, there is no way to recover lost fund.
Again, due to the fact that private keys are randomly generated, it's impossible for a user to share the same wallet.dat file across multiple devices (e.g. desktop, iOS, Android) and multiple platforms (e.g. Windows, Linux, Mac). Different copies of wallet.dat will get out-of-sync. A user has to manage each wallet independently, which leads to significant operational burden and risk.
It would be extremely valuable for a service provider, such as an exchange or e-commerce site, to be able to generate unique public keys to receive fund while putting the corresponding private keys in cold storage. The impact on security is significant.

Social X: why is it so hard for me to tip someone?

One essential feature of Bitcoin is pseudo-anonymity. To pay someone, you need to get hold of her impenetrable public hash key, somehow. And the hash key, i.e. the wallet address, may not be valid a moment later because the owner might have lost the corresponding private key. Ironically, this awkwardness, even backwardness, is not perceived as a disadvantage by almost all the cryptocurrencies. In fact, on the contrary, the single biggest, hottest, most wanted feature is full decentralised anonymity, which has seen the rise and fall of many cryptocurrencies and their copycats. While all the other cryptocurrencies compete with each other on this front, Reddcoin, aiming to the social currency of the digital age, moves in the opposite direction. Social lives are not possible without social identities.

Social X: why can't I use a service without giving up control?

The vast majority of 3rd-party service providers which hold fund on a user's behalf has exclusive full control of her private keys. If a service is indeed worthy, a user has no choice but to trust the 3rd party with security and integrity. It's ironic, to say the least, that cryptocurrencies which are created to remove exactly this need for blind trust in middlemen end up in a much worse position than fiat currencies due to the fact that many cryptocurrency companies are unregulated and incompetent. Then the question is: is there a way to create an ecosystem where anyone can write and provide valuable social applications in a fully decentralised fashion?

Social X: Architecture for a Decentralised System for Social Payment and Services

Social X has many components which are already being actively developed. Below I give a brief description of some of them.
  1. In the future, there will be two types of official Reddcoin wallets. QT wallet and reddcoind are full wallets required to run a full node. A second type of wallets, called thin wallets or SPV wallets will use the technology of Electrum modified and enhanced to support PoSV and staking. These wallets include mobile wallets on iOS, Android, next-generation Social Wallet on desktop and wallets inside browsers (Chrome/Firefox/Safari). I've already finished writing and started testing the reference implementation of Reddcoin Electrum server and client. Each client only needs to download 25M of data vs the current full blockchain at 660M. This is how we solve the blockchain size problem.
  2. All our official wallets, whether full or thin, will be deterministic. All private keys are generated deterministically from a long passphrase. This passphrase is all you need to remember and backup and with it you can fully recover your wallet and funds anytime anywhere. You will also be able to support multiple wallets on multiple platforms and devices and they will all be in sync. This is how we solve the portability problem.
  3. All our official wallets, whether full or thin, will be hierarchical. They will allow users to generate public keys on demand while keeping private keys in cold storage. This is how we solve the cold storage problem.
  4. I'm writing code (~30% finished) for sth we call Reddcoin Social ID (Redd-ID):
    • It's a new service provided at the blockchain level.
    • It allow users to associate a username with one private key.
    • The user can choose to bundle extra information such as email, address and avatar.
    • The information is public and embedded in the blockchain. As a result, any user can send Reddcoin to another by simply specifying the recipient's Redd-ID.
    • Redd-ID registration costs Reddcoins. The costs vary depending on many factors such as the length of the username. For example, we expect popular names like tom to cost at least 7 figure.
    • Redd-ID registration is verified in PoSV blocks. Therefore all active Reddcoin stakers will be the provider of Redd-ID service.
    • Redd-ID registration fee goes to the Reddhead who successfully mints the PoSV block that verifies and confirms the registration. In a sense, it will feel like a lottery. And this is why this service doesn't make sense for any PoW coin where each block is pool-mined.
    • Redd-IDs can be transferred to new addresses and by default auto-expire annually and can be renewed.
    • Small Reddcoin holders, as long as they keep staking, may double, triple or 10x their existing holdings just by receiving registration fees.
    • Businesses and organisations can register usernames for purposes like receiving donation.
  5. There will be several services available to provide more ways for Redd-ID to be used on Internet. I don't want to disclose all our cards here. Please wait for my whitepaper and see what we have for you as surprises. Meanwhile, do share with us how you imagine Redd-ID can be used.
  6. Different components of Social X will allow decentralised tipping across all social networks. In our next-generation social tipping platform, there will be no tipbots! When you tip someone on Reddit, Twitter, Twitch, Youtube or Facebook, the tipping goes straight from local wallet, whether on your mobile or desktop to the recipient.
  7. There will be APIs to allow 3rd parties to write and offer decentralised social applications.

Social X: where are we now?

  1. I'm finishing the whitepaper in coming weeks (while writing a lot of code). The whitepaper will contains much more information than this post.
  2. Reddcoin Electrum wallets for iOS and Android are being actively developed.
  3. Reddcoin full wallets (QT/reddcoind) are already hierarchical deterministic in the development branch and are being internally tested.
  4. The Social Tipping Platform is being actively developed.
  5. I need volunteers to host and test Reddcoin Electrum server and clients. I'll make a separate post next week.

Epilogue

Below I'll only answer questions selectively. Much more details will be available in the whitepaper and there is no reason to jump the gun and repeat it here. Stage one took us 6 months. We expect stage two to take 6 months also. It may be the most exciting period in the history of Reddcoin project.
Regards
laudney
submitted by laudney to reddCoin [link] [comments]

I am still using QT 4.8.3. Do I need to upgrade, and what client?

I bought bitcoins in 2013 and haven't touched them since. I recently booted up the client, which is qt 4.8.3. I haven't kept up with all the Core vs classic stuff, and have no idea what that is. Can I still use my current client? To I need to upgrade or use something else? If I do, will I need to download 100GB (!) of blockchain? Thank you.
submitted by reddit022813 to btc [link] [comments]

A critique and applaud for Joystream

You may have heard the news that Joystream is going live on BCH. First off, I want to applaud these guys for having been working on this project for several years. Clearly, the existing incentive structure atop the BitTorrent protocol is in need of modernization, and everyone knows that blockchain technology will soon be mature enough to provide the monetary incentive mechanism that has been talked about in research communities for over a decade now. Good job Joystream on being the first to venture into a live cryptocurrency environment!
However, I want to point out some observations about how this project contrasts compared to the vTorrent Network project. Please note, I’m reserving this discussion for BitTorrent implementation and wallet related comparisons, not about dev team vs. dev team.
Firstly, download and play around in each projects’ wallet. Get a feel for the features. Notice anything? Yes, vTorrent has a robust feature rich wallet (and the console offers many more features not available in the GUI). Joystream, well they, “have always had a rudimentary wallet” in their words.
Next, just look at their torrent implementation vs. the live-cast testnet preview @vTorrentCrypto tweeted out last month. It is not a fake. The torrent info hashes in the video are real torrents, the client appeared to connect to real swarms, and the devs clearly had multiple paid seeders on test net seeding in order for there to be a token spend. Pretty cool stuff! Joystream's torrents work on their own GUI which is lacking in features; you might even go so far as to call it clunky. However you describe it, it’s not going to be much of an allure from people’s current go-to torrent clients.
And finally, for those who follow the vTorrent Network project closely, you will know that the design strategy has always been to have a BitTorrent tab that runs as a bridge outside the QT wallet framework. This ties in closely to having an in client “TOKEN” as well, as these can also be thought of as existing off the wallet framework in a way. Why do it this way you might ask? Well, let’s let Joystream answer for us, “When we started work on building the wallet UI, we ran into a lot of technical debt related to user interface state management. Our past approach was a combined model of our user interface and core application state, which was very unmanageable. We had to take a step back, bite the bullet, and invest significant effort in separating the two states from one another.”
So, guys what do you think about my writeup? Are you feeling threatened by Joystream? I know that I, for one am not. In fact, I again applaud them greatly for their contributions and look forward to all torrent related projects being able to improve based on the real world feedback they will be receiving.
submitted by Pure_Crypto to vTorrentCrypto [link] [comments]

opening an old wallet.dat

I had about $8 USD worth of bitcoin in a wallet, and I backed up the wallet.dat to my dropbox. According to the modified date of the file this was in April 2013, so it was probaby from bitcoin qt version 0.8.1, or maybe a little earlier.
I basically left it there and haven't done anything with bitcoin since then. Since it is worth probably at least $100 now I decided to check the exact amount.
I downloaded the latest version of bitcoin core, added the wallet.dat file to the data directory, started it with -rescan, and waited almost a month (!) for the blockchain data to get up to date. The balance showed as 0 the whole time. I thought it would update once the blockchain was totally downloaded, but it still just says 0.
Is this a problem with old vs new versions? Did I do something wrong? Next time, should I expect the balance to show a non-zero amount even if I haven't downloaded the whole blockchain yet?
Update: ok, I feel kind of dumb, turns out the transaction was made in a multibit wallet, not a bitcoin qt wallet, but I still have a copy of that too. I opened the wallet in the latest version of multibit classic, and it has the receiving address in question, and checking the address on blockchain.info I can see that it received the transaction... but the transaction and the balance both don't show in the program. I wonder if I need the same multibit version I had before? the transaction was made in feb 2014
Update 2: was able to use the private key to sweep the balance into electrum
submitted by valanbrown to Bitcoin [link] [comments]

How to setup a Dogecoin Vanity Address!

WHAT IS A DOGE VANITY ADDRESS
Vanity addresses are ones where you can choose what characters appear somewhere in the address. For example, DPie5ucpypDTUsgquc3ea2Meg6TwpW6mW1. All Doge addresses must start with D (capital) and the second character must be a capital if it is a letter (not all letters accepted, for example I O Y W are not allowed as the second character). You can also create letters or words at the end or even beginning of the address such as:
Letters that I have found valid as second characters are: 5 6 7 8 9 A B C D E F G H J K L M N P Q R S T U
HOW TO CREATE YOUR VERY OWN DOGE VANITY ADDRESS
HOW TO IMPORT YOUR NEW DOGE VANITY ADDRESS INTO YOUR DOGECOIN-QT WALLET
For MultiDoge, see here
<3 pie
submitted by PieCrafted to dogecoin [link] [comments]

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me,.,bitcoin,.,nedir,.,bitcoin,.,news india,.,bitcoin.n,.,bitcoin,.,n.ireland,.,n&p,.,bitcoin,.,consulting,.,shares in,.,bitcoin,.,piotr_n,.,bitcointalk,.,piotr_n,.,bitcoin,.,m of n,.,bitcoin,.,bitcoinspot.n,.,bitcoin,.,or ethereum,.,bitcoin,.,owner,.,bitcoin,.,online,.,bitcoin,.,original price,.,bitcoin,.,offline wallet,.,bitcoin,.,online wallet,.,bitcoin,.,outlook,.,bitcoin,.,official site,.,bitcoin,.,on amazon,.,o,.,bitcoin,.,e seguro,.,o,.,bitcoinu,.,bitcoin,.,o'reilly,.,bitcoin,.,to aud,.,bitcoin,.,o'reilly pdf,.,bitcoin,.,to euro,.,bitcoin,.,to btc,.,sve o,.,bitcoin,.,o'reilly,.,bitcoin,.,and the blockchain,.,bitcoin,.,price gbp,.,bitcoin,.,predictions,.,bitcoin,.,price uk,.,bitcoin,.,price prediction,.,bitcoin,.,paper wallet,.,bitcoin,.,pizza,.,,.,bitcoin,.,price live,.,p np,.,bitcoin,.,r.i.p.,.,bitcoin,.,p-free,.,bitcoin,.,win32/bitcoinminer.p,.,bitcoin,.,qt,.,bitcoin,.,qr code,.,bitcoin,.,quote,.,bitcoin,.,quantum computing,.,bitcoin,.,que es,.,bitcoin,.,quora,.,bitcoin,.,questions,.,bitcoin,.,qt update,.,bitcoin,.,qt wallet location,.,bitcoin,.,quantum,.,bitcoin,.,q,.,bitcoin,.,q es,.,q son,.,bitcoins,.,q es un,.,bitcoin,.,q son los,.,bitcoins,.,q es el,.,bitcoin,.,q comprar con,.,bitcoins,.,bitcoins que significa,.,bitcoin,.,q significa,.,bitcoin,.,rate,.,bitcoin,.,reddit,.,bitcoin,.,review,.,bitcoin,.,rival,.,bitcoin,.,rate gbp,.,bitcoin,.,rise,.,bitcoin,.,regulation,.,bitcoin,.,rich list,.,bitcoin,.,rate history,.,bitcoin,.,regulation uk,.,r,.,bitcoinmarkets,.,r,.,bitcoin,.,uk,.,r,.,bitcoin,.,canada,.,r,.,bitcoin,.,cash,.,r,.,bitcoin,.,package,.,r,.,bitcointalk,.,r,.,bitcoin,.,mining,.,r,.,bitcoin,.,abc,.,r,.,bitcoin,.,analysis,.,bitcoinxt,.,bitcoin,.,share price,.,bitcoin,.,stock,.,bitcoin,.,split,.,bitcoin,.,segwit,.,bitcoin,.,stock price,.,bitcoin,.,shares,.,bitcoin,.,symbol,.,bitcoin,.,suisse,.,bitcoin,.,scams,.,bitcoin,.,stock market,.,bitcoins value,.,bitcoin,.,s curve,.,bitcoin,.,miners,.,gh/s,.,bitcoin,.,th/s,.,bitcoin,.,th/s,.,bitcoin,.,miner,.,mh/s,.,bitcoin,.,1th/s,.,bitcoin,.,miner,.,10th/s,.,bitcoin,.,miner,.,20th/s,.,bitcoin,.,miner,.,bitcoin,.,trading,.,bitcoin,.,to dollar,.,bitcoin,.,transaction,.,bitcoin,.,to £,.,bitcoin,.,ticker,.,bitcointalk,.,bitcoin,.,transaction fee,.,bitcoin,.,t shirt,.,bitcoin,.,t shirt uk,.,bitcoin,.,t shirt india,.,bitcoin,.,t shirt store,.,alpha-t,.,bitcointalk,.,bb&t,.,bitcoin,.,t-110,.,bitcoin,.,mining system,.,bitcoin,.,miner t720,.,bitcoin,.,usd,.,bitcoin,.,uk,.,bitcoin,.,unlimited,.,bitcoin,.,unconfirmed transaction,.,bitcoin,.,usd price,.,bitcoin,.,uk price,.,bitcoin,.,uasf,.,bitcoin,.,uk tax,.,bitcoin,.,update,.,bitcoin,.,uk exchange,.,why u,.,bitcoin,.,billionaire,.,bitcoin,.,u bosni,.,bitcoin,.,miner.u,.,bitcoin,.,u crnoj gori,.,bitcoin,.,youtube,.,bitcoin,.,u dinarima,.,wii u,.,bitcoin,.,utorrent,.,bitcoin,.,u.s.,.,bitcoin,.,exchange,.,bitcoin,.,u kune,.,bitcoin,.,value,.,,.,bitcoin,.,value chart,.,bitcoin,.,value history,.,bitcoin,.,value gbp,.,bitcoin,.,vs ethereum,.,bitcoin,.,vs usd,.,bitcoin,.,volatility,.,bitcoin,.,vs litecoin,.,bitcoin,.,value 2010,.,bitcoin,.,vs gold,.,bitcoin,.,v litecoin,.,bitcoin,.,v dollar,.,bitcoin,.,v euro,.,bitcoin,.,v gold,.,bitcoin,.,v blockchain,.,bitcoin,.,v onecoin,.,bitcoin,.,hack v.2,.,bitcoin,.,worth,.,bitcoin,.,wiki,.,bitcoin,.,wallet uk,.,bitcoin,.,what is it,.,bitcoinwisdom,.,bitcoin,.,whitepaper,.,bitcoin,.,wallet online,.,bitcoin,.,wallet address,.,bitcoin,.,wallet download,.,bitcoin,.,miner.w,.,bitcoin,.,w polsce,.,bitcoiny w polsce,.,bitcoin,.,w niemczech,.,bitcoin,.,w chmurze,.,bitcoin,.,w żabce,.,bitcoin,.,w polsce legalny,.,bitcoin,.,w chinach,.,bitcoin,.,w prawie polskim,.,bitcoin,.,w górę,.,bitcoin,.,xe,.,bitcoin,.,xbt,.,bitcoin,.,xt,.,bitcoin,.,xbte,.,bitcoin,.,xapo,.,bitcoin,.,xrp,.,bitcoin,.,xt price,.,bitcoin,.,xpub,.,x,.,bitcoin,.,generator,.,bitcoin,.,yahoo finance,.,bitcoin,.,year chart,.,bitcoin,.,year,.,bitcoin,.,yield,.,bitcoin,.,ytd,.,bitcoin,.,yubikey,.,bitcoin,.,yoda,.,bitcoin,.,yahoo finance chart,.,ybitcoin,.,magazine,.,bitcoin,.,y control de cambio,.,y combinator,.,bitcoin,.,ecuador y,.,bitcoin,.,bitcoin,.,by paypal,.,bitcoin,.,y el lavado de dinero,.,bitcoin,.,y deep web,.,bitcoin,.,y lavado de dinero,.,bitcoin,.,y litecoin,.,bitcoin,.,and blockchain,.,bitcoin,.,zebra,.,bitcoin,.,zerohedge,.,bitcoin,.,zimbabwe,.,bitcoin,.,zar,.,bitcoin,.,zcash,.,bitcoin,.,zapwallettxes,.,bitcoin,.,zarabianie,.,bitcoin,.,zug,.,bitcoin,.,zero,.,bitcoin,.,zero confirmations,.,bitcoin,.,z value,.,titan z,.,bitcoin,.,mining,.,titan z,.,bitcoin,.,z cash,.,bitcoin,.,nvidia titan z,.,bitcoin,.,mining,.,nvidia titan z,.,bitcoin,.,nakup zlata z,.,bitcoini,.,sklep z,.,bitcoinami,.,trgovanje z,.,bitcoini,.,co z,.,bitcoinem,.,bitcoin,.,0 confirmations,.,bitcoin,.,0.1,.,bitcoin,.,0.1.0,.,bitcoin,.,0 active connections,.,bitcoin,.,0 transaction fee,.,bitcoin,.,0 fee,.,0.15,.,bitcoins,.,0 25,.,bitcoins,.,0.05,.,bitcoin,.,in euro,.,bitcoin,.,2.0,.,0.1,.,bitcoins,.,0.21,.,bitcoins,.,bitcoin,.,1st august,.,bitcoin,.,1 million,.,bitcoin,.,101,.,bitcoin,.,10 year chart,.,bitcoin,.,10000,.,bitcoin,.,148,.,,.,bitcoin,.,10 year prediction,.,bitcoin,.,100k,.,bitcoin,.,100 dollars,.,bitcoin,.,10 years ago,.,1,.,bitcoin,.,in gbp,.,1,.,bitcoin,.,in pounds,.,1,.,bitcoin,.,in £,.,1,.,bitcoin,.,to dollar,.,1,.,bitcoin,.,in inr,.,1,.,bitcoin,.,to euro,.,1,.,bitcoin,.,in gdp,.,1,.,bitcoin,.,in eur,.,1,.,bitcoin,.,to myr,.,1,.,bitcoin,.,in sterling,.,bitcoin,.,2010,.,bitcoin,.,2017,.,bitcoin,.,2020,.,bitcoin,.,2018,.,bitcoin,.,2009,.,bitcoin,.,2013,.,bitcoin,.,21 million,.,bitcoin,.,2012,.,bitcoin,.,2014,.,2,.,bitcoin,.,to usd,.,2,.,bitcoin,.,price,.,2,.,bitcoin,.,to inr,.,2,.,bitcoin,.,wallets,.,2,.,bitcoins to dollars,.,2,.,bitcoins free,.,2,.,bitcoins a month,.,2,.,bitcoin,.,qt,.,bitcoin,.,2 year chart,.,bitcoin,.,2 paypal,.,bitcoin,.,3000,.,bitcoin,.,31st july,.,bitcoin,.,3 confirmations,.,bitcoin,.,3.0,.,bitcoin,.,3 year chart,.,bitcoin,.,3 month chart,.,bitcoin,.,300,.,bitcoin,.,365 club,.,bitcoin,.,3000 usd,.,bitcoin,.,30 confirmations,.,3,.,bitcoins in gbp,.,3,.,bitcoins,.,3,.,bitcoins to usd,.,3,.,bitcoin,.,in euro,.,3,.,bitcoin,.,to eur,.,bitcoin,.,3 unlimited,.,bitcoin,.,3 day chart,.,bitcoin,.,3 address,.,bitcoin,.,4000,.,bitcoin,.,4chan,.,bitcoin,.,4 billion,.,bitcoin,.,401k,.,bitcoin,.,4 backpage,.,bitcoin,.,43,.,bitcoin,.,40000,.,bitcoin,.,4k,.,bitcoin,.,4 year chart,.,bitcoin,.,48,.,4,.,bitcoins,.,4,.,bitcoins to usd,.,4,.,bitcoins in gbp,.,4,.,bitcoin,.,to eur,.,bitcoins 4 backpage,.,bitcoin,.,4 igaming,.,bitcoin,.,4 u,.,bitcoin,.,4 november,.,bitcoin,.,4 cash,.,bitcoin,.,5 year chart,.,bitcoin,.,51 attack,.,bitcoin,.,500,.,bitcoin,.,5 year,.,bitcoin,.,500 000,.,bitcoin,.,5000,.,bitcoin,.,50000,.,bitcoin,.,5 year price,.,bitcoin,.,5 years ago,.,bitcoin,.,5 year forecast,.,5,.,bitcoins in pounds,.,5,.,bitcoins,.,5,.,bitcoins to usd,.,5,.,bitcoin,.,free,.,5,.,bitcoin,.,in euro,.,bitcoin,.,5 years,.,bitcoin,.,5 minutes,.,bitcoin,.,5 min,.,bitcoin,.,5 unlimited generator,.,bitcoin,.,666,.,bitcoin,.,6 months,.,bitcoin,.,6 confirmations,.,bitcoin,.,6 month chart,.,bitcoin,.,6000,.,bitcoin,.,60 minutes,.,bitcoin,.,6 confirmations time,.,bitcoin,.,6 month price,.,bitcoin,.,6 years ago,.,bitcoin,.,60 day chart,.,6,.,bitcoin,.,network confirmations,.,,.,
submitted by besterse to BestCryptoPlatform [link] [comments]

Are we overlooking pgp verification of wallet installation files?

I am curious how many people use pgp to verify the new version of their favorite wallet software every time a new version comes out? To me it seems like pgp verification isn't taken very seriously. Most, but not all vendors will put out new pgp signature files with each new release however if you are relatively unaware of security this could mean you are unknowingly missing a very important step. Importing the authors pgp key, downloading the associated signature file and then verifying the executable isn't very obvious to those who aren't security savvy. However it is an obvious security hole and a potential honeypot for anyone looking for some easy coin. One thing I find disturbing is how few of the major wallet developers put any significant effort into educating their users on the first step of securing their hot wallet. Multibit and armory are the only two clients I know of that give any information on pgp verification, but even multibit misses this important step on their "How to install" page. Electrum doesn't even provide a signature file for their linux version instead providing a hyperlink with an md5 hash appended to it. Bitcoin-qt from what I can tell only provides sha256 hashes of their files with zero instruction on how to use them. To me it seems like the pgp step of securing a wallet is looked at as the boring minor tidbit that you have to have that nobody really wants to put time into resulting in most vendors throwing up some hashes/signatures with little to no information on how to use them. I think that all vendors should have a section with instructions on how to verify their software, put this as the second step in getting started with their software right after the download step and make sure to provide pgp signatures for each installer package and not just hashes. For me, not being a security expert, I feel much safer verifying a pgp signature vs checking that a hash matches. With bitcoins being targeted on a daily basis through incredibly creative means this seems to me like a giant gaping hole that could be fought with a very small amount of education. Just a thought.
Edit: because I suck at the grammar Edit: after digging around I found the electrum signature files for linux. There is no direct link to the page from their website but they can be found here: http://download.electrum.org/
submitted by bitmagi to Bitcoin [link] [comments]

I screwed up: installed bitcoin core as my wallet a year and a half ago, now I'm running out of hard drive space.

So, I am trying to free up space on my hard drive and I realized that the blockchain file from my bitcoin QT is taking up more space than I want. I installed it a year and a half ago when I was first learning about bitcoin and didn't understand the implications of downloading the bitcoin core vs. a basic wallet app.
The problem is, I don't want to just delete it because then every time I use my wallet I will be forced to wait hours while it downloads again. This isn't too big of a problem, because I mostly use a mobile wallet and web-based wallets now, so worst case scenario is that I delete the file and then simply don't run the bitcoin core program until I need to use any of those private keys... which I can't imagine I would (no coins stored there) - only a few old cloud miners with payout addresses pointed at it.
Is there a middle ground? Can I limit the amount of space that the blockchain takes up, ie, only downloading the most 100 recent confirmations or some other pruned-blockchain variant? I know Satoshi said that might be possible in the white paper, but I don't know if it is a feature yet.
If not, could someone let me know how to SAFELY delete the file from my drive or get all the private keys from that wallet so I can simply uninstall it?
Thanks
submitted by bobthereddituser to BitcoinBeginners [link] [comments]

If bitcoins became a real player in the world currency, wouldn't the blockchains be ridiculously large?

I am trying to decide which is better for me, electrum vs. armory. With my limited knowledge, it appears that armory requires a local blockchain vs. electrum, which uses blockchain.info's servers. Satoshidice doesn't really help that much either.
If in, say, 5 years.. the blockchain has grown astronomically... wouldn't it be a pain to maintain a local blockchain? If i reformat my computer, for example, it would likely take days to fully re-download and re-verify. If my bitcoin QT client goes down, how would I go about recovering my coins? and if electrum's blockchain went down, how would i go about recovering my coins?
submitted by misterrunon to Bitcoin [link] [comments]

A call to all streamers: use bitcoin!

(Cross-posting from TL)
All you need is to overlay something like this qr code to your stream, and that's it! Now anyone in the world that sees it and holds some bitcoin, can donate some to you.
As far as I know, the options we currently have to donate some money in support to our favourite players are restricted to two: to subscribe to their twitch channel, or to donate using paypal. While these modes of payment might suit some, I feel that streamers are loosing on a potential source of income by not enabling bitcoin donations. Its quite easy to set up, and it has zero costs.
Awesome! How do I do it?
Now it's trivial for anyone in the world holding bitcoin to send you some. They just need to scan the qr code or copy the written address, and use it to send from their wallet.
ESPORTS!!
Bitcoin can also be as easily used in a tournament setting. For instance, in TotalBiscuit's Shoutcraft America series, he set up a tip jar paypal account for every contestant, so that people could send tips to their favourite players. I thought that was a brilliant idea, but felt that the lack of a bitcoin option was a missed opportunity. Would have been as easy as to embed the 2 player qr codes at each side of the hud during each match for anyone to instantly be able to tip the players.
In other news, TotalBiscuit announced at the end of his last Shoutcraft America tournament that he'll be hosting a bo7 showmatch between NaNiwa and Scarlett, for the price of 12 bitcoin. I have already seen talk of people wanting to add their own bitcoins to that prizepool (as if it is not high enough!) as soon as he makes the price address public. And I think having the ability to do so is awesome!
Some more examples of qr awesomeness
Stuff you should also probably read
Wallet security is an important topic. The money people send to the receiving address can be spent by anyone knowing the private key that generated the wallet. This means that yes, online wallet providers can theoretically rob you of all your coins. The blockchain wallet is considered to be the safest of the online wallets, since it hands you the private keys and allows for two factor authentication wallet management, but the safest option is still an offline private wallet. Personally I like Electrum, but you can also use Armory or the bitcoin-qt original client. TL;DR: use online wallets for pocket change, and store any meaningful balance cautiously.
Also it's worth noting that anyone that knows your receiving address can see your live balance (for instance you can see the current balance and all past transactions of the wallet I just created for this post here ); another reason in favour of moving your funds around if they get meaningful.
But wait a second... What is this bitcoin thing you're talking about?? Is it edible?
Nope, but you can apparently buy pizza with it! I'm sure most of you have already heard about it, with the current price bubble news, the announcement that Team Liquid is now accepting bitcoin for the store and TL+ subscriptions, or if you have seen the bitcontip bot in action in some subreddits. However bitcoin is a pretty complex topic and there is a good amount of misinformation floating around, so if you want to learn the facts you can watch this video or visit these webpages or the bitcoin wiki.
Are you a cyberpunk cryptoanarchist neoliberal technocapitalist nerd new world order reptilian illuminati conspiracy-theorist drug dealer anonymous and freemason member?
Yes! And on top of that I also am an avid SC2 fan and a bitcoin enthusiast. And I think esports could greatly benefit from bitcoin, and that bitcoin could greatly benefit from esports; they are made one for the other. This is my attempt at playing matchmaker!
Disclamer: Please use this post to discuss the involvement of bitcoin within the SC2 and esports community. To discuss about fundamental bitcoin issues, please use head to bitcoin. Thanks.
submitted by Ender985 to starcraft [link] [comments]

Hopefully some Peercoin help, thank you

Hi everyone,
I've been reading all I can about Peercoin, and I'm planning on getting started (slowly accumulating BTC to convert) with Peercoin as soon as I can.
I have some questions relating to offline wallet setup that I haven't been able to find the answers to, and I would really appreciate any assistance. I've been lurking peercoin for a while, as well as peercointalk.org.
1 - I notice there are https ways of generating bitcoin/litecoin addresses, but only http for the analogous peercoin site:
https://www.bitaddress.org/ http://primecoin.org/bitaddress
It's funny - I'm satisfied it's 'safe' to download and run the https website on a LiveCD to generate an offline wallet (for bitcoin), but I'm not sure about the http version (for peercoin). Is there really any appreciable difference in risk? Could someone compromise the code hosted on http vs. https?
2 - If I can't use an unsecured http site to generate offline wallets, then I can certainly download the ppcoin-qt client and run that in LiveCD. I can get a receiving address, but I can't figure out how to input the analogous command to dumpprivkey that I see referenced for Bitcoin-qt. Is this command prompt not available in the current version, or do I have to setup a ppcoin.conf file in order to access the command prompt?
I would want to write down (on paper) the private key associated with my wallet.dat file generated in the liveCD environment just in case I completely mess up any backing up/copying I do of the wallet.dat
2.5 - Which brings me to: Does it matter? Is it easier to just back up the wallet in the liveCD environment, and then store it on a truecrypt volume on a USB key? And then later just mount the truecrypt drive and import the wallet when I want access to the coins?
My goal with ppcoin is to buy a few peercoins and then come back a few years later to see what's happened. I want everything to be offline until then.
3 - Can I use blockchain.info to find out about balances at peercoin addresses, or is that just for bitcoin? Is there an analogous service for peercoin? I would just want to check periodically that my offline address still has my peercoins, to satisfy my paranoia.
Thank you very very much for any help. I feel like I could set myself up nicely with bitcoin, but I'm just not completely comfortable with peercoin's software just yet. Though I much prefer the idea of holding a few ppc compared to btc.
submitted by ragerob to peercoin [link] [comments]

Downloading the Core - Qt Wallet (Litecoin) Bitcoin Tutorial - download bitcoin core Download Bitcoin Arbitrage Software (Full Automated Bot ... Bitcoin And Other Money 9. bitcoind

Bitcoin Core là phần mềm mã nguồn mở dùng để quản lý tiền ảo Bitcoin. Bitcoin Core trước đây có tên gọi là Bitcoin-QT, cho phép sử dụng miễn phí trên nền tảng Windows. windows Version: 0.15.0.1 Bitcoin-Qt is the so – called" official " client of the network, which is developed and promoted by Bitcoin Foundation, a non-profit organization uniting core developers and responsible for the community's contacts with corporations and governments.Bitcoin Foundation branches are opened in several dozens of countries around the world. DOWNLOADS QT WALLET (WINDOWS) QT WALLET (OTHER) Electrum wallet mining Bitcoin Core (formerly Bitcoin-Qt) is the third Bitcoin client, developed by Wladimir van der Laan based on the original reference code by Satoshi Nakamoto. It has been bundled with bitcoind since version 0.5. Bitcoin-Qt has been rebranded to Bitcoin Core since version 0.9.0 .. Bitcoin Core can be used as a desktop client for regular payments or as a server utility for merchants and other ... This means that to fully verify your download, you need to ask people you trust to confirm that the key fingerprint printed above belongs to the Bitcoin Core Project's release signing key. Linux verification instructions. Click the link in the list above to download the release for your platform and wait for the file to finish downloading.

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Downloading the Core - Qt Wallet (Litecoin)

Credit: TechCrunch ( Check it out ) Ethereums Blockchain Trust Disrupted Bitcoin and the Blockchain (Pics: https://media.coindesk.com/uploads/2016/04/Screen-... Bitcoin Tutorial - download bitcoin core Take time to educate yourself Bitcoin is different from what you know and use every day. Before you start using Bitcoin for any serious transaction, be ... In this video I show you how to download the Litecoin Core Wallet, also sometimes called the Litecoin Qt wallet. I make a mistake early on in the video when I say I "install" the wallet from terminal. 4 Stocks I'm Buying This Week During This Stock Market Crash - Duration: 10:55. ... Buy Bitcoin VS Mine Bitcoins - pros / cons - Duration: 8:47. How Much? 44,918 views. 8:47. Science Of The Soul ... Bitcoin JSON-RPC Tutorial 4 - Command Line Interface - Duration: 5:14. m1xolyd1an Recommended for you. 5:14. Bitcoin Lightning Network Tutorial Part 1 - Setup Bitcoind - Duration: 15:10. ...

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