Download - Bitcoin

Gridcoin 5.0.0.0-Mandatory "Fern" Release

https://github.com/gridcoin-community/Gridcoin-Research/releases/tag/5.0.0.0
Finally! After over ten months of development and testing, "Fern" has arrived! This is a whopper. 240 pull requests merged. Essentially a complete rewrite that was started with the scraper (the "neural net" rewrite) in "Denise" has now been completed. Practically the ENTIRE Gridcoin specific codebase resting on top of the vanilla Bitcoin/Peercoin/Blackcoin vanilla PoS code has been rewritten. This removes the team requirement at last (see below), although there are many other important improvements besides that.
Fern was a monumental undertaking. We had to encode all of the old rules active for the v10 block protocol in new code and ensure that the new code was 100% compatible. This had to be done in such a way as to clear out all of the old spaghetti and ring-fence it with tightly controlled class implementations. We then wrote an entirely new, simplified ruleset for research rewards and reengineered contracts (which includes beacon management, polls, and voting) using properly classed code. The fundamentals of Gridcoin with this release are now on a very sound and maintainable footing, and the developers believe the codebase as updated here will serve as the fundamental basis for Gridcoin's future roadmap.
We have been testing this for MONTHS on testnet in various stages. The v10 (legacy) compatibility code has been running on testnet continuously as it was developed to ensure compatibility with existing nodes. During the last few months, we have done two private testnet forks and then the full public testnet testing for v11 code (the new protocol which is what Fern implements). The developers have also been running non-staking "sentinel" nodes on mainnet with this code to verify that the consensus rules are problem-free for the legacy compatibility code on the broader mainnet. We believe this amount of testing is going to result in a smooth rollout.
Given the amount of changes in Fern, I am presenting TWO changelogs below. One is high level, which summarizes the most significant changes in the protocol. The second changelog is the detailed one in the usual format, and gives you an inkling of the size of this release.

Highlights

Protocol

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

GUI

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

Blockchain

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

Summary Changelog

Accrual

Changed

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

Removed

Beacons

Added

Changed

Removed

Unaltered

As a reminder:

Superblocks

Added

Changed

Removed

Voting

Added

Changed

Removed

Detailed Changelog

[5.0.0.0] 2020-09-03, mandatory, "Fern"

Added

Changed

Removed

Fixed

submitted by jamescowens to gridcoin [link] [comments]

Even More Satoshi-era Bitcoin Moves—What's Going on?

Even More Satoshi-era Bitcoin Moves—What's Going on?


Even More Satoshi-era Bitcoin Moves—What's Going on?
Another batch of 50 Bitcoin (BTC)—that has been lying dormant since 2010 and is worth around $570,000 today—was moved today, according to Blockchain.com.
The block explorer’s data shows that these 50 coins were first transferred to the address on November 9, 2010, as a coinbase transaction. This means the Bitcoin was a block reward received by a miner.
The wallet hadn’t received or sent any other transactions—until today. The only exception is 0.00000547 BTC that was sent to the address in late August as part of a spam-like transaction aimed at over 300 different wallets. Most likely, that was a so-called “dusting attack” primarily used by malicious actors to trace BTC movements.
Today, the coins have been transferred to three different addresses: two Bech32 (a SegWit format) and one P2SH, mainly used for multi-signature and non-native SegWit transactions.
The transfers were 30.16, 12.48 and 7.34 BTC, in size. Upon confirmation, the new wallets split the coins into 2–3 additional transactions each and sent them further down the line.
As Decrypt reported, increasingly more coins from the earliest days of Bitcoin are “waking up” lately. Since the start of October, two large caches—50 BTC ($570,000) and 1,000 BTC ($11.4 million)—were moved out of their deep slumber. Prior to that, another batch of 50 BTC was transferred in May.
Yet, not everyone thinks this is a big deal. Referring to today's movement of coins, Ingo Fiedler, co-founder of Blockchain Research Lab, told Decrypt, "Those coins were minted nearly two years after network launch. I would not consider them satoshi-era Bitcoin and do not see any significance in them moving."
It's not as though Satoshi is returning, right?
📷 Telegram TOTBTC: https://t.me/TOTBTCofficial 📷 Register at: https://www.totbtc.com/register
#TOTBTC #BTC #BTCPMOVES #SATOSHI
submitted by TOTBTC-Official to u/TOTBTC-Official [link] [comments]

In early 2013, it became a common belief that new Bitcoin users should not be recommended Bitcoin-QT, the full node client. Bitcoin.org was changed to no longer exclusively recommend it. Two years later, the block size conservatives are saying the drop in full node count was due to block size

I distinctly remember that the recommending of Bitcoin-QT to new Bitcoin users became a faux pas in early 2013. It was claimed that regular people should download and install an SPV client like Multibit.
Predictably, there was a large drop in the full node count, as the wallet market became dominated by a large number of new, light clients, and the most trafficked Bitcoin website, bitcoin.org, stopped exclusively recommending people to install Bitcoin-QT.
Now, we have important developers like Luke-Jr claiming that this 95% drop in full node count can be mainly attributed to the growing size of the block chain, despite the fact that the drop began right when light clients began being recommended..
EDIT to add some data:
This is the image that GMaxwell and Peter Todd, two individuals who are conservative about the block size (in particular Peter Todd, who's been warning about increasing the 1 MB size limit since 2013), have linked to to make their point about the full node count:
http://i.imgur.com/EL0zHRe.jpg
Up until at least March 18, 2013, the only client recommended to visitors of bitcoin.org was Bitcoin-QT, and an installation link for it was provided right on the landing page:
https://web.archive.org/web/20130318211940/http://bitcoin.org/
The WayBack Machine shows that by March 25th, 2013, this had changed, and a 'Choose Your Wallet' button appeared on Bitcoin.org/:
https://web.archive.org/web/20130513214959/http://bitcoin.org/en/
From March 25th 2013 onward, the number of non-full-node wallets recommended by bitcoin.org increased, in response to a general increase in the number of high quality and/or well marketed light and mobile wallets on the market.
Now a days, Bitcoin-QT is one of twelve clients displayed on bitcoin.org's Choose Your Wallet page:
https://bitcoin.org/en/choose-your-wallet
Other than Bitcoin-QT and Bitcoin Armory, all of them are non-full-node clients.
This shift, from a wallet market where only Bitcoin-QT was available and recommended to one that is increasingly diverse and dominated by light clients, coincides with the point (Spring 2013) where we start seeing a rapid decline in the full node count.
submitted by aminok to Bitcoin [link] [comments]

Reddcoin (RDD) 02/20 Progress Report - Core Wallet v3.1 Evolution & PoSV v2 - Commits & More Commits to v3.1! (Bitcoin Core 0.10, MacOS Catalina, QT Enhanced Speed and Security and more!)

Reddcoin (RDD) Core Dev Team Informal Progress Report, Feb 2020 - As any blockchain or software expert will confirm, the hardest part of making successful progress in blockchain and crypto is invisible to most users. As developers, the Reddcoin Core team relies on internal experts like John Nash, contributors offering their own code improvements to our repos (which we would love to see more of!) and especially upstream commits from experts working on open source projects like Bitcoin itself. We'd like tothank each and everyone who's hard work has contributed to this progress.
As part of Reddcoin's evolution, and in order to include required security fixes, speed improvements that are long overdue, the team has up to this point incorporated the following code commits since our last v3.0.1 public release. In attempting to solve the relatively minor font display issue with MacOS Catalina, we uncovered a complicated interweaving of updates between Reddcoin Core, QT software, MacOS SDK, Bitcoin Core and related libraries and dependencies that mandated we take a holistic approach to both solve the Catalina display problem, but in doing so, prepare a more streamlined overall build and test system, allowing the team to roll out more frequent and more secure updates in the future. And also to include some badly needed fixes in the current version of Core, which we have tentatively labeled Reddcoin Core Wallet v3.1.
Note: As indicated below, v3.1 is NOT YET AVAILABLE FOR DOWNLOAD BY PUBLIC. We wil advise when it is.
The new v3.1 version should be ready for internal QA and build testing by the end of this week, with luck, and will be turned over to the public shortly thereafter once testing has proven no unexpected issues have been introduced. We know the delay has been a bit extended for our ReddHead MacOS Catalina stakers, and we hope to have them all aboard soon. We have moved with all possible speed while attempting to incorproate all the required work, testing, and ensuring security and safety for our ReddHeads.
Which leads us to: PoSV v2 activation and the supermajority on Mainnet at the time of this writing has reached 5625/9000 blocks or 62.5%. We have progressed quite well and without any reported user issues since release, but we need all of the community to participate! This activation, much like the funding mechanisms currently being debated by BCH and others, and employed by DASH, will mean not only a catalyst for Reddcoin but ensure it's future by providing funding for the dev team. As a personal plea from the team, please help us support the PoSV v2 activation by staking your RDD, no matter how large or small your amount of stake.
Every block and every RDD counts, and if you don't know how, we'll teach you! Live chat is fun as well as providing tech support you can trust from devs and community ReddHead members. Join us today in staking and online and collect some RDD "rain" from users and devs alike!
If you're holding Reddcoin and not staking, or you haven't upgraded your v2.x wallet to v3.0.1 (current release), we need you to help achieve consensus and activate PoSV v2! For details, see the pinned message here or our website or medium channel. Upgrade is simple and takes moments; if you're nervous or unsure, we're here to help live in Telegram or Discord, as well as other chat programs. See our website for links.
Look for more updates shortly as our long-anticipated Reddcoin Payment Gateway and Merchant Services API come online with point-of-sale support, as we announce the cross-crypto-project Aussie firefighter fundraiser program, as well as a comprehensive update to our development roadmap and more.
Work has restarted on ReddID and multiple initiatives are underway to begin educating and sharing information about ReddID, what it is, and how to use it, as we approach a releasable ReddID product. We enthusiastically encourage anyone interested in working to bring these efforts to life, whether writers, UX/UI experts, big data analysts, graphic artists, coders, front-end, back-end, AI, DevOps, the Reddcoin Core dev team is growing, and there's more opportunity and work than ever!
Bring your talents to a community and dev team that truly appreciates it, and share the Reddcoin Love!
And now, lots of commits. As v3.1 is not yet quite ready for public release, these commits have not been pushed publicly, but in the interests of sharing progress transparently, and including our ReddHead community in the process, see below for mind-numbing technical detail of work accomplished.
e5c143404 - - 2014-08-07 - Ross Nicoll - Changed LevelDB cursors to use scoped pointers to ensure destruction when going out of scope. *99a7dba2e - - 2014-08-15 - Cory Fields - tests: fix test-runner for osx. Closes ##4708 *8c667f1be - - 2014-08-15 - Cory Fields - build: add funcs.mk to the list of meta-depends *bcc1b2b2f - - 2014-08-15 - Cory Fields - depends: fix shasum on osx < 10.9 *54dac77d1 - - 2014-08-18 - Cory Fields - build: add option for reducing exports (v2) *6fb9611c0 - - 2014-08-16 - randy-waterhouse - build : fix CPPFLAGS for libbitcoin_cli *9958cc923 - - 2014-08-16 - randy-waterhouse - build: Add --with-utils (bitcoin-cli and bitcoin-tx, default=yes). Help string consistency tweaks. Target sanity check fix. *342aa98ea - - 2014-08-07 - Cory Fields - build: fix automake warnings about the use of INCLUDES *46db8ad51 - - 2020-02-18 - John Nash - build: add build.h to the correct target *a24de1e4c - - 2014-11-26 - Pavel Janík - Use complete path to include bitcoin-config.h. *fd8f506e5 - - 2014-08-04 - Wladimir J. van der Laan - qt: Demote ReportInvalidCertificate message to qDebug *f12aaf3b1 - - 2020-02-17 - John Nash - build: QT5 compiled with fPIC require fPIC to be enabled, fPIE is not enough *7a991b37e - - 2014-08-12 - Wladimir J. van der Laan - build: check for sys/prctl.h in the proper way *2cfa63a48 - - 2014-08-11 - Wladimir J. van der Laan - build: Add mention of --disable-wallet to bdb48 error messages *9aa580f04 - - 2014-07-23 - Cory Fields - depends: add shared dependency builder *8853d4645 - - 2014-08-08 - Philip Kaufmann - [Qt] move SubstituteFonts() above ToolTipToRichTextFilter *0c98e21db - - 2014-08-02 - Ross Nicoll - URLs containing a / after the address no longer cause parsing errors. *7baa77731 - - 2014-08-07 - ntrgn - Fixes ignored qt 4.8 codecs path on windows when configuring with --with-qt-libdir *2a3df4617 - - 2014-08-06 - Cory Fields - qt: fix unicode character display on osx when building with 10.7 sdk *71a36303d - - 2014-08-04 - Cory Fields - build: fix race in 'make deploy' for windows *077295498 - - 2014-08-04 - Cory Fields - build: Fix 'make deploy' when binaries haven't been built yet *ffdcc4d7d - - 2014-08-04 - Cory Fields - build: hook up qt translations for static osx packaging *25a7e9c90 - - 2014-08-04 - Cory Fields - build: add --with-qt-translationdir to configure for use with static qt *11cfcef37 - - 2014-08-04 - Cory Fields - build: teach macdeploy the -translations-dir argument, for use with static qt *4c4ae35b1 - - 2014-07-23 - Cory Fields - build: Find the proper xcb/pcre dependencies *942e77dd2 - - 2014-08-06 - Cory Fields - build: silence mingw fpic warning spew *e73e2b834 - - 2014-06-27 - Huang Le - Use async name resolving to improve net thread responsiveness *c88e76e8e - - 2014-07-23 - Cory Fields - build: don't let libtool insert rpath into binaries *18e14e11c - - 2014-08-05 - ntrgn - build: Fix windows configure when using --with-qt-libdir *bb92d65c4 - - 2014-07-31 - Cory Fields - test: don't let the port number exceed the legal range *62b95290a - - 2014-06-18 - Cory Fields - test: redirect comparison tool output to stdout *cefe447e9 - - 2014-07-22 - Cory Fields - gitian: remove unneeded option after last commit *9347402ca - - 2014-07-21 - Cory Fields - build: fix broken boost chrono check on some platforms *c9ed039cf - - 2014-06-03 - Cory Fields - build: fix whitespace in pkg-config variable *3bcc5ad37 - - 2014-06-03 - Cory Fields - build: allow linux and osx to build against static qt5 *01a44ba90 - - 2014-07-17 - Cory Fields - build: silence false errors during make clean *d1fbf7ba2 - - 2014-07-08 - Cory Fields - build: fix win32 static linking after libtool merge *005ae2fa4 - - 2014-07-08 - Cory Fields - build: re-add AM_LDFLAGS where it's overridden *37043076d - - 2014-07-02 - Wladimir J. van der Laan - Fix the Qt5 build after d95ba75 *f3b4bbf40 - - 2014-07-01 - Wladimir J. van der Laan - qt: Change serious messages from qDebug to qWarning *f4706f753 - - 2014-07-01 - Wladimir J. van der Laan - qt: Log messages with type>QtDebugMsg as non-debug *98e85fa1f - - 2014-06-06 - Pieter Wuille - libsecp256k1 integration *5f1f2e226 - - 2020-02-17 - John Nash - Merge branch 'switch_verification_code' into Build *1f30416c9 - - 2014-02-07 - Pieter Wuille - Also switch the (unused) verification code to low-s instead of even-s. *1c093d55e - - 2014-06-06 - Cory Fields - secp256k1: Add build-side changes for libsecp256k1 *7f3114484 - - 2014-06-06 - Cory Fields - secp256k1: add libtool as a dependency *2531f9299 - - 2020-02-17 - John Nash - Move network-time related functions to timedata.cpp/h *d003e4c57 - - 2020-02-16 - John Nash - build: fix build weirdness after 54372482. *7035f5034 - - 2020-02-16 - John Nash - Add ::OUTPUT_SIZE *2a864c4d8 - - 2014-06-09 - Cory Fields - crypto: create a separate lib for crypto functions *03a4e4c70 - - 2014-06-09 - Cory Fields - crypto: explicitly check for byte read/write functions *a78462a2a - - 2014-06-09 - Cory Fields - build: move bitcoin-config.h to its own directory *a885721c4 - - 2014-05-31 - Pieter Wuille - Extend and move all crypto tests to crypto_tests.cpp *5f308f528 - - 2014-05-03 - Pieter Wuille - Move {Read,Write}{LE,BE}{32,64} to common.h and use builtins if possible *0161cc426 - - 2014-05-01 - Pieter Wuille - Add built-in RIPEMD-160 implementation *deefc27c0 - - 2014-04-28 - Pieter Wuille - Move crypto implementations to src/crypto/ *d6a12182b - - 2014-04-28 - Pieter Wuille - Add built-in SHA-1 implementation. *c3c4f9f2e - - 2014-04-27 - Pieter Wuille - Switch miner.cpp to use sha2 instead of OpenSSL. *b6ed6def9 - - 2014-04-28 - Pieter Wuille - Remove getwork() RPC call *0a09c1c60 - - 2014-04-26 - Pieter Wuille - Switch script.cpp and hash.cpp to use sha2.cpp instead of OpenSSL. *8ed091692 - - 2014-04-20 - Pieter Wuille - Add a built-in SHA256/SHA512 implementation. *0c4c99b3f - - 2014-06-21 - Philip Kaufmann - small cleanup in src/compat .h and .cpp *ab1369745 - - 2014-06-13 - Cory Fields - sanity: hook up sanity checks *f598c67e0 - - 2014-06-13 - Cory Fields - sanity: add libc/stdlib sanity checks *b241b3e13 - - 2014-06-13 - Cory Fields - sanity: autoconf check for sys/select.h *cad980a4f - - 2019-07-03 - John Nash - build: Add a top-level forwarding target for src/ objects *f4533ee1c - - 2019-07-03 - John Nash - build: qt: split locale resources. Fixes non-deterministic distcheck *4a0e46e76 - - 2019-06-29 - John Nash - build: fix version dependency *2f61699d9 - - 2019-06-29 - John Nash - build: quit abusing AMCPPFLAGS *99b60ba49 - - 2019-06-29 - John Nash - build: avoid the use of top and abs_ dir paths *c8f673d5d - - 2019-06-29 - John Nash - build: Tidy up file generation output *5318bce57 - - 2019-06-29 - John Nash - build: nuke Makefile.include from orbit *672a25349 - - 2019-06-29 - John Nash - build: add stub makefiles for easier subdir builds *562b7c5a6 - - 2020-02-08 - John Nash - build: delete old Makefile.am's *066120079 - - 2020-02-08 - John Nash - build: Switch to non-recursive make
Whew! No wonder it's taken the dev team a while! :)
TL;DR: Trying to fix MacOS Catalina font display led to requiring all kinds of work to migrate and evolve the Reddcoin Core software with Apple, Bitcoin and QT components. Lots of work done, v3.1 public release soon. Also other exciting things and ReddID back under active dev effort.
submitted by TechAdept to reddCoin [link] [comments]

Creamcoin 0.18.0.0 – following Bitcoin’s tale

Creamcoin 0.18.0.0 – following Bitcoin’s tale

06/08/2019 3 min read📷216SHARES216VIEWSShare on Twitter
When new Creamcoin was designed, we had in mind not only a coin that would hold parity with any cryptocurrency, but something that would demonstrate the extra-special capabilities of a decentralized ledger, capable to introduce, help and bring it further to the regular people. Blockchain developing is unstoppable complex process with endless possibilities. Integration of applications on such a technology could achieve better, secure pass of value.
0.18.0.0

On August 5th, 2019 Creamcoin code was successfully updated to the latest Bitcoin version 0.18.0
https://github.com/creamcoin/cream/
With this latest release, we proved that Creamcoin itself it’s not a sort of a tenant to the Bitcoin. Much easier to apply and to pursue the main purpose of existence and to create further innovations in our Cream Line. The new release brings tremendous performance improvements, as well as integration will be much easier for any platform, exchange or integrator. Wallets are available to Releases tab on github
WALLETS

Multi-wallet support

Cream Core now supports loading multiple, separate wallets. The wallets are completely separated, with individual balances, keys and received transactions. Multi-wallet is enabled by using more than one -wallet argument when starting Creamcoin, either on the command line or in the Cream config file. In Creamcoin-Qt, only the first wallet will be displayed and accessible for creating and signing transactions. GUI selectable multiple wallets will be supported in a future version. This feature will continue to be refined with later updates, as there are still some known issues in using the GUI to access the “multiwallet” command. The most notable is that you can’t use coin control features with multiple wallets loaded, or else you will likely retain the wrong wallet when attempting to switch wallets.
When running Cream Core with multi-wallet, wallet-level RPC methods must specify the wallet for which they’re intended in every request. HTTP RPC requests should be send to the :/wallet// endpoint, for example 127.0.0.1:8332/wallet/wallet1.dat/. bitcoin-cli commands should be run with a -rpcwallet option, for example [bitcoin-cli -rpcwallet=wallet1.dat getbalance] A new node-level [listwallets] RPC method is added to display which wallets are currently loaded. Starting command for both wallets should look like this: [creamd -daemon -wallet=wallet1.dat -wallet=wallet2.dat]

Hardware Wallet native compatibility

With a new release of Cream Core the possibility is added in the form of use hardware wallets (Ledger, Trezor, Digital BitBox, KeepKey, Coldcard), but this process is manual and involves the use of Hardware Wallet Interaction (HWI) tool and it needs HW support and addition of Cream in the future, which is not excluded from roadmap. This is a great news for everyone who use Cream Core, and want extra security. Only applies to those who can use command line/CLI (for now), and when some of Hardware wallets actually supports Cream.

SegWit 4MB limit

SegWit replacing the block size limit with a block “weight” limit, allowing up to 4 megabytes of transaction data, and giving a substantial boost in the transaction capacity of the Cream network.

www.creamcoin.com

In the same with the new code update, Creamcoin Team is doing major shifting power, migrating the marketing and promotion activities, from our news site cream.technology to our main page www.creamcoin.com. We will come up with additional statement in this matter, so our supporters and followers have better perspective of Cream Line and the products of it.
In the meantime we are looking into new ways that developers can enhance the capabilities of the Creamcoin protocol, integration of decentralized exchange functionality, lightning network and number of other options that would allow for different types of conditional sends of Creamcoin assets. We are inviting any individual, platform, exchange or integrator who would like to submit recommendations or feature requests, feel free to contribute to the Creamcoin Github.
By Cream Team
submitted by creamcointeam to u/creamcointeam [link] [comments]

I support allowing very large blocks, as long as they grow under conditions of rising fee pressure (provided by an elastic block size cap), but this image linked to by GMaxwell deserves serious consideration

I support allowing very large blocks, as long as they grow under conditions of rising fee pressure (provided by an elastic block size cap), but this image linked to by GMaxwell deserves serious consideration submitted by aminok to Bitcoin [link] [comments]

Groestlcoin 6th Anniversary Release

Introduction

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?

Windows
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.
OSX
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.
Ubuntu
http://groestlcoin.org/forum/index.php?topic=441.0

Other Linux

http://groestlcoin.org/forum/index.php?topic=97.0

Download

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

Source

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.

Features

Download

iOS
Android

Source

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.

Features

Download

Main Release (Main Net)
Testnet Release

Source

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.

Features

Live Version (Not Recommended)

https://www.groestlcoin.org/recovery/

Download

https://github.com/Groestlcoin/mnemonic-recovery/archive/master.zip

Source

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).

Features

Usage

https://github.com/Groestlcoin/VanitySearch#usage

Download

Source

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).

Features

Download

Source

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.

Features

Remastered Improvements

Download

Source

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.

Features

Download

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

Source

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.

Features

Download

Windows
Linux / OSX (Instructions)

Source

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.

Changes

Download

Main Net
Main Net (FDroid)
Test Net

Source

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.

Changes

Download

Source

UPDATED – P2Pool Test Net

Changes

Download

Pre-Hosted Testnet P2Pool is available via http://testp2pool.groestlcoin.org:21330/static/

Source

submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

Gridcoin 4.0.5.0-Leisure "Elizabeth" Release

The core developers are pleased to present the 4.0.5.0 Elizabeth milestone leisure release. This is a leisure release primarily aimed at non-mandatory items and bug fixes leading up to the Fern mandatory milestone release.
This release also enables us to whitelist teams other than Gridcoin as a stepping stone for the implementation of no team requirement in Fern.
Enjoy!
https://github.com/gridcoin-community/Gridcoin-Research/releases/tag/4.0.5.0
Changelog...

Added

Changed

Removed

Fixed

submitted by jamescowens to gridcoin [link] [comments]

[For Hire] Skilled, Experienced Back-End Developer -- Your Imagination is the Only Limit

Free weekend, available for development work, any size or scope, and your imagination is the only limit. 38 year old Canadian, 19 years high paced professional experience, innovative, ambitious, and easy to work with.
PHP, Python, Perl, Qt / C++, excellent with LINUX server administration, SQL and database administration, source code control, cloud computing, virtualization, bitcoin / blockchain technology, and others. Excellent at dashboards, and fully functional online operations.
Work example is Apex at: https://apex-platform.org/
Took two years, and check the video on the home page to see I'm indeed a decent developer. Personal intro also at: https://youtu.be/xNmBYtfaf2M
$40/hour, can start immediately, and would love to take care of your project. Contact me at [email protected].
submitted by Envrin to forhire [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]

A collection of evidence regarding Bitcoin's problem and takeover (January 2018)

REPOSTED FOR MORE VISIBILITY, EDITED A FEW MISTAKES AND INCLUDED NO.1-39 also.*
On November 22th I posted this
On December 27th I posted [this](https://np.reddit.com/btc/comments/7mg4tm/updated_dec_2017_a_collection_of_evidence/
I have added a lot more links now, please give feedback on what else I could add for next time I will add (few weeks/month).
1 The history between btc and bitcoin
Archive link
yours.org link
2 A brief and incomplete history of censorship in /Bitcoin
Archive link
3 User posts on bitcoin about 6900 BTC that theymos stole, post gets removed.
Archive link
4 Go to /noncensored_bitcoin to see posts that have been censored in /bitcoin
5 Theymos caught red-handed - why he censors all the forums he controls, including /bitcoin
Archive link
6 User gets banned from /bitcoin for saying "A $5 fee to send $100 is absolutely ridiculous"
Archive link
7 Greg Maxwell caught using sockpuppets
Archive link
8 Wikipedia Admins: "[Gregory Maxwell of Blockstream Core] is a very dangerous individual" "has for some time been behaving very oddly and aggressively"
Archive link
9 Remember how lightening network was promised to be ready by summer 2016? https://coinjournal.net/lightning-network-should-be-ready-this-summe
Archive link
10 rBitcoin moderator confesses and comes clean that Blockstream is only trying to make a profit by exploiting Bitcoin and pushing users off chain onto sidechains
Archive link
11 "Blockstream plans to sell side chains to enterprises, charging a fixed monthly fee, taking transaction fees and even selling hardware" source- Adam Back Blockstream CEO
Archive link
Twitter proof
Twitter Archive link
12 September 2017 stats post of bitcoin censorship
Archive link
13 Evidence that the mods of /Bitcoin may have been involved with the hacking and vote manipulation "attack" on /Bitcoin.
Archive link
14 bitcoin mods removed top post: "The rich don't need Bitcoin. The poor do"
Archive link
15 In January 2017, someone paid 0.23 cents for 1 transaction. As of December 2017, fees have peaked $40.
16 Told to kill yourself by Bitcoin for cashing out
17 Bitcoin is a captured system
18 Bot attack against bitcoin was allegedly perpetrated by its own moderator and Blockstream’s Greg Maxwell
19 Remember: Bitcoin Cash is solving a problem Core has failed to solve for 6 years. It is urgently needed as a technical solution, and has nothing to do with "Roger" or "Jihan".
20 Bitcoin Cash has got nothing new.
21 How the Bilderberg Group, the Federal Reserve central bank, and MasterCard took over Bitcoin BTC
More evidence
22 Even Core developers used to support 8-100MB blocks before they work for the Bankers
Proof
23 /Bitcoin loves to call Bitcoin Cash "ChinaCoin", but do they realize that over 70% of BTC hashrate comes from China?
24 /bitcoin for years: No altcoin discussion, have a ban! /bitcoin now: use Litecoin if you actually need to transact!
25 First, they said they want BCH on coinbase so they could dump it. Now they are crying about it because it's pumping.
26 Luke-Jr thinks reducing the blocksize will reduce the fees..
27 Core: Bitcoin isn't for the poor. Bitcoin Cash: we'll take them. Our fees are less than a cent. Core: BCash must die!
28 How The Banks Bought Bitcoin. The Lightning Network
29 Big Blocks Can Scale, But Will It Centralize Bitcoin?
30 "Fees will drop when everyone uses Lightning Networks" is the new "Fees will drop when SegWit is activated"
31 Adam Back let it slip he hires full-time teams of social media shills/trolls
32 The bitcoin civil war is not about block size; it's about freedom vs. authoritarianism
33 Why BCH is the real Bitcoin
34 We don't need larger blocks, since lightning will come someday™, the same way we don't need cars or planes since teleporters will come someday™
35 We don't need larger blocks, since lightning will come someday™, the same way we don't need cars or planes since teleporters will come someday™
36 Facts about Adam Back (Bitcoin/Blockstream CEO) you heard it right, he himself thinks he is in charge of Bitcoin.
37 A explaination why Core's vision is different from the real Bitcoin vision
38 The dangerously shifted incentives of SegWit
39 Lighting Network was supposed to be released in 2016
40 You can now store a year's worth of continuously full 8MB blocks for the cost of a single BTC transaction
41 They say we are trying to Kill Bitcoin. No, we are not. We are trying to save it, and make it usable for everyone, and everything. Not tomorrow. Not 6 months from now, Not 18 Months from now. NOW. That's what's going on Here.
42 Miners that want to pull out daily have to switch to BCH due to the fees
43 At $25 #BTC tx fees, if miners want to withdraw their revenue daily, they require a minimum of $140,000 worth of mining hardware to reduce the tx fee to less than 1% of their outgoings. At a $100 tx fee it requires min $560,000. Which is the centralising coin again?
44 Core developer : Bitcoin fees too high? You have invested in early tech! Have faith. Give us time.
45 A redditor even predicted the /bitcoin front page
46 Elizabeth Stark of Lightning Labs admits that a hostile actor can steal funds in LN unless you broadcast a transaction on-chain with a cryptographic proof that recovers the funds. This means LN won't work without a block size limit increase. @8min17s
47 /bitcoin is in uproar about Coinbase not implementing Segwit -> mempool mooning is single handedly Coinbase' fault. So all it takes to bring bitcoin to its knees is a single corporate entity not implementing segwit? Me thinks its not Coinbase there's something wrong with.
48 /bitcoin for years: No altcoin discussion, have a ban! /bitcoin now: use Litecoin if you actually need to transact!
49 $BCH has been attacked in every way possible since it's creation. Exchanges listing it with deceiving names and abbreviations; being dumped by bitcoin holders for over 6 months; and it still managed to close every month positively, while adding numerous new wallet/exchange pairs
50 theymos claims that the whitepaper is a historical artifact not worthy of being on the sidebar of bitcoin
51 Even a Bitcoin conference can't use Bitcoin because of it's high fees
52 185% Growth in Active Addresses for BCH in 1 month, 125% for ETH, -5% for BTC
53 Shapeshift: "Sub-$100 fees unadvisable on BTC." Core supporters: "Implement Segwit already!" Shapeshift: "We did. We're the biggest user of Segwit."
54 How btc and Bitcoin see each other
55 Man who vandalized Bitmain's office hired by Blockstream
56 Bitcoin Cash vs Bitcoin Core compared. Just the facts
57 It was obvious from the very beginning that #Bitcoin transactions were meant to be as cheap as possible. Bitcoin Core has destroyed Bitcoin's usefulness as money by creating a system where $30 fees are celebrated. - @Bitcoin
58 User explains why Core's vision is not the real Bitcoin vision
59 Fake Tweet from the president bashes BCH on /bitcoin front page. Calling it exactly what it is will get you banned.
60 A public appeal to Michael Marquardt the original Theymos.
61 Now they are angry at the CEO of Coinbase for supporting BCH. It's like you are not allowed to have your own opinion without getting attacked.
62 bitcoin user says Bitcoin should not be used as a cryptocurrency
63 The five stages of grief, transaction fees
64 A brief history of the attempted takeover of Bitcoin by BlockstreamCore/The legacy banking systems/The Powers That Be
65 Warning! Theymos admitted he 'misled millions of people' yet he wanna 'leave the text as it is' to mislead more people!
66 "Wait. What? My private keys need to be on an internet-connected computer in order to use Lightning Network?"
67 a year ago Adam Back accused u/Jacktenz of exaggerated claims about fees. The truth is the claims were understated!
68 Roger Ver was not selling explosives, he was selling firecrackers.
69 Core devs pop champaigne, and openly celebrate high fees. Now core supporters blame coinbase for high fees?
70 Now that we've had a few 8MB blocks, let's dispel this centralisation myth once and for all.
71 Reddit admin sodypop on censorship in /Bitcoin: "We generally allow moderators to run their communities how they like as long as they are within our site-wide rules and moderator guidelines." Blatant censorship, hacking, vote manipulation, and brigading are "within [Reddit's] site-wide rules".
72 Another obvious sockpuppet account being used to push Blockstream's agenda.
73 Totally organic grassroots support for the #NO2X "movement." Definitely not a purchased sockpuppet account, you guys.
74 Charlie Lee [Litecoin creator]: "I have sold and donated all my LTC [...] Litecoin has been very good for me financially, so I am well off enough that I no longer need to tie my financial success to Litecoin’s success"
75 If it’s inaccessible to the poor it’s neither radical nor revolutionary.
76 BSCoretabs shills are vandalizing Wikipedia to smear Roger Ver with false quoting, missparaphrasing and accusations.
77 Introducing dipshit extraordinaire Warren Togami, the link between Theymos and BlockStream
78 Debunking: "Blockstream is 3 or 4 developers out of hundreds of developers at Core" - Tone Vays
79 This blockchain debate is purely political and is not about scaling but about control. X-Post from /bitcoin
80 A profile to look at for more evidence
81 What exactly is Blockstream Core's excuse for causing a year of stagnation in Bitcoin with no end in sight?
82 We have a way to build bank-like services.
83 "There is a reason why things are done in a certain way in the financial system, and Bitcoin will be doing something similar"
84 Some thoughts about the possible Bitcoin Segwit, Bilderberg/AXA/BockStream/Core, In-Q-Tel, CIA connection.
85 Theymos on Bitcoin XT
86 (If this is not allowed mods, please remove this text) I cannot verify this yet, but a source has given me information about theymos. theymos is known as Michael Marquardt, from Wisconsin and is a graduate from the University of Wisconsin as a computer-science student.
submitted by thepaip to btc [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]

Run a 0.14 Full-Node on RaspberryPi3 Pruned(less than 16GB SD needed)

Hi!
Happy if this guide helps you.
Tip if you want: 19656Uwdwko5RjtnuwQENpjBwE3ChzD59v
UPDATE 04/06/17
Add 'uacomment=UASF-SegWit-BIP148' into your bitcoin.conf if you want to signal UASF.
UPDATE 03/13/17
ADDED a tl;dr; Version at the end of this Post.
UPDATE 03/12/17:
Just to test it - I reinstalled all on 8GB SD and it works as well. But maybe you should use at least 16GB for the beginning.
Using a 128GB card for the first version was a little bit stupid - so I reinstalled everything on a 8GB SD card. Including Linux and a pruned blockchain - and it works.
I used prune=550 and Jessie Lite (headless / command line) - without wallet and gui.
The SD is almost full, but it works so far
I also updated the whole manual a bit to make things more clear. Thank you for all your feedback!
Just started my Bitcoin Node today and wanted to share the way I did it with people who are interested in running their own full node. It took some time to write everything down - hopefully correct so far.
I am sure, many people around bitcoin are way more informed and educated as I am - I am the noob. So I wrote this manual to help users like me - noobs, to get started with a cheap, simple bitcoin node on raspberry pi.
Have fun!
I wanted to get my Raspberry Pi 3 working as a node to support the network. Actually the process of installing and running the node was more or less easy - but for Noobs (like I am) it might be a bit tricky to start the whole thing, because there are different ways.
Did you - like me - think you would need +120GB on the raspi, external USB HDD to be a full node? You won't!
If you have a Raspberry and you know what Bitcoin is, I guess, you are a little bit aware of linux, networks and of course bitcoin - so I won't go into detail too much.
This guide is just a little helper to get a full node running on your raspberry pi. Thanks to the help of the nice people in this sub and of course the documentation by the developers, I got it working - and of course also special thanks to raspnode.com - as I followed their tutorial to start - I went some other ways here and there - so please read carefully.
For the Part 2 I would suggest to have http://raspnode.com/diyBitcoin.html open and read through my manual.
I split the tutorial in 2 Parts - PART ONE is about installing the client on your PC and downloading the Blockchain.
PART TWO is about the setup of the raspberryPi and transferring the pruned blockchain to the pi and run it as a full node!
The first thing to be aware of is: You actually need to download the whole blockchain to get this working - if you already have your bitcoin client synced on the PC / MAC great you can reuse it!
Now you might think "but you said less than 16GB in the title!"
Yes, but the good thing is you won't need to download it on your Raspberry, neither you need to sync it completely on your raspberry which took ages (weeks!) before. When you finished this Guide, you will just have a max. 4GB Blockchain on your Raspberry Pi - but it still is a full node! The magic word is Pruning.
Maybe even a 8GB SD Card works just fine including Linux (jessie lite)!
So, if you already have a full node on your PC - Great you can almost skip PART ONE - BUT have at how to Prune in PART ONE if you don't know about it.
For PART TWO you'll need a Raspberry Pi 2 or 3 (I used 3) min. 8GB (works also) or better 16GB SD Card. (I used a 128GB for the first version of this manual - which is way too big)

PART ONE

This is the manual how to get started on you PC / MAC / Linux (I did it on Win7)
Go to: https://bitcoin.org/en/download and download the core Client for your Machine (I used win64).
Install it and configure it to save the Blockchaindata to the directory of your choice - so instead getting 120GB on your C drive, I would suggest to download it to another place like a USB drive.
You can set this up during the install. Standard folder for the blockchain folder is "%APPDATA%\Bitcoin" on Windows.
or you can do it after the install by creating a bitcoin.conf file inside your installation folder / or %APPDATA%\Bitcoin and add
datadir=l:\yourfolder
to the file. Line by line.
By the way here you could also just add dbcache - to use more memory to speed up the process a bit:
dbcache=4096
if you don't want to use the settings inside the program. (you can also set this inside the program under settings! If you have this inside the bitcoin.conf you will see the amount you set there from inside the program - it overrides the values)
You can check inside the windows client under settings, if you can see a manual dbcache is set by having a look at the left footer area. When your dbcache value shows up, everything is fine.
So the Blockchain download process will take time - maybe a few days! Depending on your machine, internet connection and HDD.
The Blockchain is huge as it contains every single transaction of the past until today. You won't need to keep your PC running all the time, you can turn it off and on and it will resync automatically when you start bitcoin-qt.exe!
Make sure to close the client always via "quit" - ctrl+q.
After you have your bitcoin core installed, the blockchain downloaded and synced - you are ready to PRUNE!
First - close the Client and let it close smoothly. After it is really closed you can follow these steps:
By pruning, your blockchain will dramatically shrink. From 120GB to just a few GB.
Be aware, that you will lose your Downloaded Blockchain as pruning will erase a big chunk of it! If you have enough space, you could of course keep the full blockchain saved somewhere on another HDD.
You can prune by editing your bitcoin.conf file by adding:
prune=550
I used prune=1024 - not sure where the differences are right now (min. prune=550). (for my 8GB version I used 550! I suggest to use this.)
Save the bitcoind.conf file and restart your windows client.
It will now clean up the Blockchain. So just the latest blocks are saved. The client should start without any problems. Maybe it takes some time to prune the blockchain data.
Check if everything works normally (the client opens as usual, you can see an empty wallet) than close the client.
Inside the Bitcoin Folder, you'll find two folders called:
blocks chainstate
those are the interesting folders containing the important data (now pruned) - and we will transfer those two to the raspberry later!
Now you are good to start the raspi transfer explained in the next part.

PART 2

Here is what I did:
1) I installed Raspian Pixel (https://www.raspberrypi.org/downloads/raspbian/) using a 128 GB SD - which is not needed because of "Pruning" - I think a 16GB card might work, too! (You can also install Raspian Jessie Lite - which saves you even more space, as it runs headless - only command line) (Updated: It is better to use Jessie Lite to save a lot of space - when you are fine with only command line)
2) I followed partly this tutorial to get everything running and setup:
http://raspnode.com/diyBitcoin.html
Please have a look at it - I have copied the Headlines in capitals to let you know what I did, and what I skipped.
On Tutorial Page: Start with RASPBIAN (OPTIONAL) CONFIG OPTIONS.
Set You RasPi up including "EDITING FILES" to save your Layout at the tutorial page and come back here.
I skipped the CONFIGURE USB AND SET AUTOMOUNT process, as we are going to use PRUNING to reduce the 120GB to a tiny filesize - so USB Devices are not needed here!
It was necessary to ENLARGE SWAP FILE to install bitcoin core - otherwise it didn't went through which ended in a frozen raspi.
So have a close look by following the raspnode tutorial at: ENLARGE SWAP FILE.
I have my raspi running via cable to router - but you can also WiFi setup everything described under NETWORKING ON THE RASPBERRY PI.
Now comes the interesting part: Follow the steps at DOWNLOADING BITCOIN CORE DEPENDENCIES - they work fine for 0.14.0 too. Git should be on Board already when you installed Pixel - otherwise you would need to install it.
sudo apt-get install git -y (only jessy lite)
I skipped the next command lines - as I don't use bitcoin-qt wallet. If you want to use it as wallet - do the step.
mkdir ~/bin cd ~bin
Now you are in the folder you want your bitcoin core data be downloaded to via git. I didn't Downloaded the Berkeley Database source code - so I also skipped the whole next command lines
[email protected]~/bin$ wget http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz [email protected]~/bin$ tar -xzvf db-4.8.30.NC.tar.gz [email protected]~/bin$ cd db-4.8.30.NC/build_unix/ [email protected]~/bin/db-4.8.30.NC/build_unix$ ../dist/configure --enable-cxx [email protected]~/bin/db-4.8.30.NC/build_unix$ make -j4
and went on with "INSTALLING BITCOIN"!
I followed the first part but instead downloading 0.13 I took of course the latest version:0.14
git clone -b 0.14 https://github.com/bitcoin/bitcoin.git cd bitcoin ./autogen.sh
this might take some time to start.
If you have trouble with hanging RESOLVING DELTAS - just restart the Raspberry Pi and remove the bitcoin folder inside /~bin using
rm -rf bitcoin
this command will delete the folder and you can reuse
git clone -b 0.14 https://github.com/bitcoin/bitcoin.git

For some reason RESOLVING DELTAS is a common problem with different downloads - so just retry it and at least after 3 times it should work!

as I didn't use the GUI/ Wallet, I ran
./configure --enable-upnp-default --disable-wallet
as I don't need the wallet functionality.
I didn't need to use "MAKE" which saves you maybe up to 2.5 hours.
instead you can just go ahead with:
sudo make install
(If I am wrong in doing so - please let me know)
The install takes some time - and just a heads up: when it gets stuck somewhere - just redo the installation process - it took three times to went through - stuck at some processing.
After the installation took place you can finally get your Raspberry Pi Node running in no time!
To test if the the installation went through - you can just start bitcoind using:
bitcoind &
than check if everything is working so far:
bitcoin-cli getinfo
after a few seconds you should see version: etc...
if not, something went wrong. Try to redo the steps in the raspnode tutorial.
(don't give up if it failed - retry! Ask your questions here)
IMPORTANT: you need to stop bitcoin on your raspberry now!
bitcoin-cli stop
If you don't need an external USB Drive - what I hope - as we are going to use pruning just go ahead and skip the USB part and create a file inside (or follow the raspnode tutorial on how to setup the USB drive):
cd .bitcoin
sudo nano bitcoin.conf
and enter the exact same pruning size you have used on your Desktop Machine to prune. I used 1024 but the minimum is 550. (used 550 for the 8GB SD card on PC and Raspberry)
prune=550
That's it for the raspi.
update: To signal UASF enter in a new line:
uacomment=UASF-SegWit-BIP148

TRANSFER

Now you have to transfer the two folders CHAINSTATE and BLOCKS from your PC bitcoind directory to your raspberry.
I am using a program called "WINSCP" - it is free and easy to use: https://winscp.net/eng/download.php
We need this to transfer the files to the Raspberry pi. Pretty sure you can also do it via SSH - but I am the noob. So let's keep it simple.
Open Winscp and put in the IP Address of your Raspberry Pi, User and Password (same as in SSH)
You should now see the directories on your Raspberry Pi. There is a folder called
.bitcoin
enter it and you will see the two folders
blocks & chainstate
you can delete them on the raspberry as they have some data from your previous test inside.
Make sure you can also see the bitcoin.conf file in that directory, which needs to contain the exact same prune line, like the one on your desktop machine. If not, make sure to edit it via SSH. The line "datadir=l:\yourfolder" is obviously not needed in the Raspberry bitcoin.conf file.
Now grab the two folders CHAINSTATE and BLOCKS from your PC and copy them to your .bitcoind folder.
I also copied banlist.dat, fee_estimation.dat, mempool.dat and peers.dat to the folder - not really knowing if needed! Not needed.
The whole copy process might take some minutes (against some weeks in the old way).
After copying is finished, you can now start bitcoind on the Raspberry.
bitcoind &
the & symbol let you still use the command line while the process is running btw.
The process - if succesfull - will take some time to finish.
bitcoin-cli getinfo
Will give you some informations what is going on right now. When you can see, that it is checking the blocks, this is good!
If you get an error - double check - if you have the correct prune size (same as on desktop machine) - in bitcoin.conf and that this file is inside .bitcoin on RaspberryPi. It took me some time, to find my mistakes.
Congrats! You are almost a part of the network!
To make your node now a fullnode, you will need to go to your router (often 192.168.1.1) and enable portforwarding for your raspberry pi - and open ports 8333 - that's it!
You can now go to: https://bitnodes.21.co/nodes/
scroll down to "JOIN THE NETWORK" and check check if your node IP is connected!
It will show up as soon as the blocks are checked and the raspi is running.
Well done!
Now you are running a full node, with a small Blockchain and got it working in Minutes, not weeks!
I really hope, my little tutorial worked for you and your are part of the Node network now.
If you have problems or I made a mistake in this helper tut, just let me know and I will try to make it better.
Have fun and NODL!
the noob
tl;dr; (if you are a real noob start with the non-tl;dr version!)
tl;dr; PART ONE
1) Download & install / setup bitcoincore @ https://bitcoin.org/de/download
2) change dbcache to something smaller than your memory and download the whole Blockchain (120GB).
3) create a file called bitcoin.conf put the line prune=550 (or higher) in to activate pruning on win inside %appData%/bitcoin
4) Open ports 8333 on your Router to make this a full node with a smaller Blockchain.
You are running a full node on your PC.
tl;dr; PART TWO
1) Install jessie lite and the needed dependencies on your SDCard - Raspberry
( >git clone -b 0.14 https://github.com/bitcoin/bitcoin.git )
  • see tutorial for more info.
2) create a file called bitcoin.conf inside .bitcoin and add the same prune=Number you had on your PC.
3) transfer the pruned folders BLOCKS and CHAINSTATE to the Raspberry Folder .bitcoin
4)Start "bitcoind &"
5) let everything sync
6) Make sure you have port 8333 opened on your router.
You are running a full node on your Raspberry with a super small Blockchain (I put all on a 8GB SDcard)
Tip if you want : 19656Uwdwko5RjtnuwQENpjBwE3ChzD59v
updated 03/12 - will update more, soon.
updated 03/12.2 - I updated the whole process a bit and also added some improvements.
updated 03/14/ Added a tl;dr version at the end.
submitted by I-am-the-noob to Bitcoin [link] [comments]

Bitcoin Block Size: Larger or smaller blocks? Resolve Bitcoin Core Blockchain size problem When Will Bitcoin Raise the Block Size Limit? The Ultimate Bitcoin (BTC) Review - Best Cryptocurrency to ... How to prune the blockchain in Bitcoin-Qt - YouTube

Bitcoin-QT does have a way to change the blockchain save location, as pointed out by many other replies to this thread. What it needs is the ability to specify the location of the wallet.dat and associated files, and to run without access to the wallet file. The blockchain can live in general bulk storage, but I'm very unhappy unless my wallet.dat lives in something like a Truecrypt container. Actual Bitcoin blockchain have size 231.54 GB and located in two torrent seeds: Torrent blockchain.torrent (monthly update) contain: folder blockchain\blocks; files in folder blocks: blk00000.dat - blk01357.dat; rev00000.dat - rev01357.dat; torrent updated on the first day of each month; Torrent update.torrent (daily update) contain: folder blockchain\blocks\index; folder blockchain\chainstate ... There are two variations of the original bitcoin program available; one with a graphical user interface (usually referred to as just “Bitcoin”), and a 'headless' version (called bitcoind).They are completely compatible with each other, and take the same command-line arguments, read the same configuration file, and read and write the same data files. Die Erstsynchronisierung von Bitcoin Core dauert sehr lange und lädt eine große Menge Daten herunter. Sie sollten sicherstellen, dass Sie ausreichend Bandbreite und Speicherplatz für die volle Größe der Blockchain (über 350GB) zur Verfügung haben. Falls Sie eine gute Internetverbindung haben, können Sie dabei helfen, das Netzwerk zu stärken, indem Sie auf Ihrem PC Bitcoin Core - mit ... This should only exist when bitcoin-qt is currently running. It contains information (BDB state) relating to your wallet. peers.dat Unknown whether this contains personally identifiable data. It may be safely deleted. Other files and folders (blocks, blocks/index, chainstate) may be safely transferred/archived as they contain information pertaining only to the public blockchain ...

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Bitcoin Block Size: Larger or smaller blocks?

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