Ethereum datadir - Crypto Mining Blog

Bitcoin ABC users who didn't upgrade before Nov 13: upgrade to 0.16.1

This is just a heads up for ABC node operators who have not upgraded to the 0.16.x version.
If you haven't noticed by now, you will not be on the upgraded chain.
Also, some miner has decided to mine an alternate, non-upgraded chain that follows the old EDA.
We don't know exactly who, but there's a tweet from Alistair Milne (which is incorrect on the vulnerability aspect btw) that associates this with 'Bitcoin Clashic' - a mocking fork whose purpose in life seems to be to act as fodder for social media trolling campaigns against Bitcoin Cash.
Why does this matter?
Because if you don't upgrade, your node would be at risk of eventually following their chain, once it accumulates enough work to supercede your chain which is currently stuck at the pre-fork block.
As the 'Clashic' (or whatever they want to call themselves) chain has not yet reached the same amount of work as the current Bitcoin Cash chain, your node would not have followed the Clashic chain yet.
Please upgrade swiftly, otherwise you will later need to do more steps to rid your datadir of Clashic blocks.
Your coins are safe nevertheless, but since Clashic did not implement its own replay protection to distinguish it from the Bitcoin Cash network, transactions made on non-upgraded nodes could end up being replayed to the active Cash chain (this is probably not bad if you were thinking that you are transacting on Cash chain anyway).
Update download link:
https://download.bitcoinabc.org/0.16.1/
P.S. Anyone can choose an old block in the blockchain to start a fork. This is not really a threat as long as they have minority of hashpower compared to the main Cash chain, because what matters for selection of the active chain is the amount of accumulated work - not the height of the chain.
Exchanges should just demand that a fork with minority hashpower implement a replay protection to make it impossible to replay onto the majority chain. This is what they have been demanding up to now.
submitted by btcfork to btc [link] [comments]

Reddit forensics: Since 16 May 2017, Reddit displays the View Count on your posts. I made 37 posts since then: 29 got < 1000 views, 5 got 1000-2000 views (70-91% upvoted), 2 got 2000-3000 views (82-91% upvoted). And my post arguing "SegWit = MERS" got a whopping 8500 views (only 50% upvoted). Weird!

A few days ago I made a post where I argued that "SegWit = MERS" - tying together the 2010 Mortgage Crisis caused by MERS (Mortgage Electronic Registration Systems or MERS) with an article by legal expert Jimmy Nguyen of nChain:
Risk of SegWit – U.S. Contract Law
https://nchain.com/en/blog/risk-of-segwit-us-contract-law/
My "SegWit = MERS" post argued that SegWit will cause the same kind of catastrophe with Bitcoin that MERS (the Mortgage Electronic Registration Systems company / database) caused with the mortage industry - since SegWit and MERS both encourage deleting the "chain of ownership data".
That "SegWit = MERS" post was about a relatively obscure economic topic - but it got a whopping 8500 views - over 10x the median number of views for my posts.
But now suddenly that one one post arguing "SegWit = MERS" got a whopping 8500 views - but only 50% upvoted.
I have no idea why this happened - and I'm not complaining about these "statistical anomalies" associated with that one post arguing that "SegWit = MERS".
But I do think it is "interesting" that suddenly such an extremely high number of "people" wanted to read (and downvote) a post which made the (relatively obscure) economic argument that "SegWit = MERS".
Did that "SegWit = MERS" post strike a nerve?
And why did it only get downvotes - but no real rebuttals? (One guy linked to some C++ code - but a few lines of C++ code do not refute the argument that SegWit encourages deleting the "chain of ownership data" for bitcoins.)
ಠ_ಠ
Data
Below are the 8 posts (out of 37 total posts) that got over 1000 views, with View Count, Upvoted Percent, and Points - and these 8 posts are sorted from highest to lowest View Count.
So the first post in this listing (the post arguing "SegWit = MERS") is the one that's the "statistical anomaly" or "outlier", with:
SegWit would make it HARDER FOR YOU TO PROVE YOU OWN YOUR BITCOINS. SegWit deletes the "chain of (cryptographic) signatures" - like MERS (Mortgage Electronic Registration Systems) deleted the "chain of (legal) title" for Mortgage-Backed Securities (MBS) in the foreclosure fraud / robo-signing fiasco
65 points - 50% upvoted - 8.5k views
https://np.reddit.com/btc/comments/6oxesh/segwit_would_make_it_harder_for_you_to_prove_you/
CENSORED (twice!) on r\bitcoin in 2016: "The existing Visa credit card network processes about 15 million Internet purchases per day worldwide. Bitcoin can already scale much larger than that with existing hardware for a fraction of the cost. It never really hits a scale ceiling." - Satoshi Nakomoto
416 points - 91% upvoted - 3.0k views
https://np.reddit.com/btc/comments/6l7ax9/censored_twice_on_rbitcoin_in_2016_the_existing/
Skype is down today. The original Skype was P2P, so it couldn't go down. But in 2011, Microsoft bought Skype and killed its P2P architecture - and also killed its end-to-end encryption. AXA-controlled Blockstream/Core could use SegWit & centralized Lightning Hubs to do something similar with Bitcoin
442 points - 82% upvoted - 2.8k views
https://np.reddit.com/btc/comments/6ib893/skype_is_down_today_the_original_skype_was_p2p_so/
Gavin Andresen: "Let's eliminate the limit. Nothing bad will happen if we do, and if I'm wrong the bad things would be mild annoyances, not existential risks, much less risky than operating a network near 100% capacity." (June 2016)
385 points - 89% upvoted - 1.4k views
https://np.reddit.com/btc/comments/6delid/gavin_andresen_lets_eliminate_the_limit_nothing/
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")?
118 points - 79% upvoted - 1.3k views
https://np.reddit.com/btc/comments/6nh00q/what_is_up_with_all_these_bitcoin_devs_who_think/
I just figured out a lot today - about Bitcoin, about scaling, about "Satoshi", about trolls and downvotes and snowflakes. And for the first time in years, I am very, very optimistic about the future of Bitcoin - because of a certain eccentric, arrogant, capitalist mathematician who curses a lot.
71 points - 70% upvoted - 1.2k views
https://np.reddit.com/btc/comments/6kpi36/i_just_figured_out_a_lot_today_about_bitcoin/
"It's funny Core never wanted a compromise until they were losing. Fuck them, they lost, no compromise. Winner takes all, bitches." ~ u/zimmah
192 points - 76% upvoted - 1.1k views
https://np.reddit.com/btc/comments/6d35ie/its_funny_core_never_wanted_a_compromise_until/
u/theymos: "I can't recommend running BIP148 software. Doing so will likely cause you to break away from the real Bitcoin currency on the flag day, create a mess of your datadir which you'll need to manually clean up, and theoretically there are opportunities for losses due to counterfeit BTC." Wow!
144 points - 91% upvoted - 1.1k views
https://np.reddit.com/btc/comments/6e6qri/utheymos_i_cant_recommend_running_bip148_software/
Analysis
So the first post in the list of 8 posts above (the one where I argued "SegWit = MERS") is the "statistical anomaly" or "outlier".
Actually that "SegWit = MERS" post is a "statistical anomaly" in two ways:
  • The "SegWit = MERS" post has an extremely high high View Count compared to all my other posts (8500 views - versus a median of under 1000 views).
  • The "SegWit = MERS" post has (relatively) low Upvoted Percent / Points (only 50% - versus 70%-90% on all my other posts with over 1000 views).
Number of Posts View Count % Upvoted Points
29 < 1000
5 1000-2000 70-91% 70-380
2 2000-3000 82-91% 410-440
1 : "SegWit = MERS" 8500 50% 65
Remarks
I'm not complaining about that post getting "only" 50% Upvoted - or about getting an extremely high View Count of 8500!
But I do think there may be something "interesting" happening here:
  • The vast majority of my posts (29 out of 37) get less than 1000 View Count.
  • Only 5 of my posts (out of 37) got 1000-2000 View Count (and Upvoted Percent 70-91%).
  • Only 2 posts (out of 37) got 2000-3000 View Count (and Upvoted Percent 82-91%).
  • Suddenly, this one weird post (arguing that "SegWit = MERS") got a gigantic 8500 View Count (and Upvoted Percent only 50%).
  • Also, none of the commenters on that post (except for u/metalzip) actually made any arguments. User u/metalzip provided links to some C++ code on GitHub. All the other comments were just content-free drive-by hate.
  • The arguments from u/metalzip may have been serious - but it is not clear whether they were convincing.
  • We still do not have any conclusive evidence showing that SegWit will not cause a catastrophe by encouraging people to delete the "chain of ownership data".
  • Finally, it is disturbing (actually, it is outrageous) that the only hard "facts" being pointed to, in this debate about the specification of the most radical and irresponsible change ever in the economic incentives and security model of what may be the world's next world currency, is a few incrutable lines of C++ code.
  • C++ code is totally adequate for expressing and discussing User Needs and Requirements for important computer systems such as Bitcoin, involving social, economic, legal and "game theory" aspects.
  • If SegWit encourages people to delete the "chain of ownership" data, then this is something we need to talk about - a lot. Just pointing to a few lines of C++ code is not the way to debate this radical change to the economic incentives and security model of Bitcoin.
In other words:
  • Nobody gave a serious rebuttal the to my argument that "SegWit = MERS" - or to legal expert Jimmy Nguyen’s arguments in his bombshell article Risk of SegWit – U.S. Contract Law, where he talked about the legal catastrophe which SegWit could cause by deleting the "chain of ownership data" for bitcoins being transferred among parties.
  • Someone merely pointed to some lines of C++ code - but this does not constitute a refutation of the argument that "SegWit = MERS".
  • More discussion about the possibility that "SegWit = MERS" is warranted (including analysis of social, economic, legal and "game theory" aspects) - beyond someone merely pointed to some lines of C++ code.
The fact is: both MERS and SegWit encourage deleting the "chain of ownership" data - for mortgages and for bitcoins.
This major change to the economic incentives and security model of Bitcoin needs much more debate. Merely pointing to a few lines of C++ code on GitHub does nothing to rebut the arguments made in my "SegWit = MERS" post, or in legal expert Jimmy Nguyen's bombshell article Risk of SegWit – U.S. Contract Law.
In fact, this kind of hand-waving about obscure technical details is exactly what caused the MERS catastrophe in the first place - which is why we should be alarmed that economically and legally ignorant devs paid by banksters are trying to pull the exact same hocuc-pocus on us again - now with SegWit.
Suddenly 8500 "people" wanted to read an obscure economic argument that "SegWit = MERS" - and one of them rebutted it... with some lines of C++ code??
Previously, I have have pointed out that many devs at Core & AXA-owned Blockstream devs are clueless about economics:
Adam Back & Greg Maxwell are experts in mathematics and engineering, but not in markets and economics. They should not be in charge of "central planning" for things like "max blocksize". They're desperately attempting to prevent the market from deciding on this. But it will, despite their efforts.
https://np.reddit.com/btc/comments/46052e/adam_back_greg_maxwell_are_experts_in_mathematics/
Greg Maxwell u/nullc says "The next miner after them sets their minimum [fee] to some tiny value ... and clears out the backlog and collects a bunch of funds that the earlier miner omitted" - like it's a BAD THING. Greg is proposing a SUPPLY-LIMITING AND PRICE-FIXING CARTEL, like it's a GOOD THING.
https://np.reddit.com/btc/comments/5i4885/greg_maxwell_unullc_says_the_next_miner_afte
Gregory Maxwell nullc has evidently never heard of terms like "the 1%", "TPTB", "oligarchy", or "plutocracy", revealing a childlike naïveté when he says: "‘Majority sets the rules regardless of what some minority thinks’ is the governing principle behind the fiats of major democracies."
https://np.reddit.com/btc/comments/44qr31/gregory_maxwell_unullc_has_evidently_never_heard/
Wladimir van der Laan (Lead Maintainer, Bitcoin Core) says Bitcoin cannot hard-fork, because of the "2008 subprime bubble crisis" (??) He also says "changing the rules in a decentralized consensus system is a very difficult problem and I don’t think we’ll resolve it any time soon." But Eth just did!
https://np.reddit.com/btc/comments/4ttv32/wladimir_van_der_laan_lead_maintainer_bitcoin/
So now, 8500 "people" wanted to read an obscure economic argument that "SegWit = MERS" - and half of the voters them downvoted it - and one of them rebutted it... with some lines of C++ code (which hardly anyone in the community is able to read)??
This is how we are going to decide major questions such as the possibility that "SegWit = MERS"??
ಠ_ಠ
How this analysis was performed
Since 16 May 2017, you can check the View Count for each of your posts on Reddit - if you're logged in.
And there is also a special URL syntax you can use to search for posts on Reddit in a custom date range.
Here's the announcement from Reddit on 16 May 2017, about the new "View Count" statistic:
[reddit change] Post view counts, users here now and traffic page updates
https://np.reddit.com/changelog/comments/6bj0iy/reddit_change_post_view_counts_users_here_now_and/
Here's the explanation of how to use CloudSearch to search for posts on Reddit within a custom date range:
Use Cloudsearch to search for posts on reddit within a time frame
https://np.reddit.com/reddittips/comments/2ix73n/use_cloudsearch_to_search_for_posts_on_reddit/
Here's the CloudSearch URL I used to filter my posts on Reddit from May 15, 2017 to July 27, 2017:
https://np.reddit.com/btc/search?sort=relevance&q=author%3A%22ydtm%22+timestamp%3A1494806400..1500938780&restrict_sr=on&syntax=cloudsearch
If you want to customize the above CloudSearch URL for yourself (and for different dates), then make the following 2 changes:
  • Change my Reddit name ydtm to your Reddit name, and
  • Use a site like Epoch Converter to convert the "from" and "to" dates to UNIX timestamp format, and change the date range 1494806400..1500938780 to your date range in the URL above.
Conclusion
So the new View Count statistic could provide useful new information about who is viewing and reacting to your posts.
Maybe someone could come up with some theories why 8500 "people" would view a post making the rather obscure economic argument that "SegWit = MERS".
Maybe arguing that "SegWit = MERS" struck a nerve?
Meanwhile, more discussion is needed about the bombshell article Risk of SegWit – U.S. Contract Law, where Jimmy Nguyen talked about the legal catastrophe which SegWit could cause by deleting the "chain of ownership data" for bitcoins being transferred among parties.
submitted by ydtm to btc [link] [comments]

Please forgive the new account, but after getting some guidance on the #segwit-support slack channel, here are the steps for us Windows N00bs to keep the miners honest even if you don't have much space on your disk.

  1. Download and verify luke-jr core build here: http://luke.dashjr.org/programs/bitcoin/files/bitcoind/misc/0.14.x/core-0.14.2-uasfsegwit1.0/ Download the zip, not the exe.
  2. You can verify the checksum by installing 7-zip, and then using the context menu to make sure your download matches the sum found here: http://luke.dashjr.org/programs/bitcoin/files/bitcoind/misc/0.14.x/core-0.14.2-uasfsegwit1.0/SHA256SUMS
  3. Extract the zip contents to C:\Bitcoin Node
If you're like me and don't have space on your disk you can prune:
  1. Create a shortcut of bitcoin-qt.exe to your desktop.
  2. Right click on your shortcut and add this line to the "Target" field:
    "C:\Bitcoin Node\bitcoin-0.14.2\bin\bitcoin-qt.exe" -datadir=C:\Bitcoin -prune=550 -dbcache=3000 -listen=0
  3. Hit Apply.
  4. Run bitcoin qt using the shortcut. It will pass along the purning parameters, and you will be keeping the miner's honest come August 1.
Cheers!
submitted by RALLYM0AD to Bitcoin [link] [comments]

Bitcoin Core 0.10.0 released | Wladimir | Feb 16 2015

Wladimir on Feb 16 2015:
Bitcoin Core version 0.10.0 is now available from:
https://bitcoin.org/bin/0.10.0/
This is a new major version release, bringing both new features and
bug fixes.
Please report bugs using the issue tracker at github:
https://github.com/bitcoin/bitcoin/issues
The whole distribution is also available as torrent:
https://bitcoin.org/bin/0.10.0/bitcoin-0.10.0.torrent
magnet:?xt=urn:btih:170c61fe09dafecfbb97cb4dccd32173383f4e68&dn;=0.10.0&tr;=udp%3A%2F%2Ftracker.openbittorrent.com%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.publicbt.com%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.ccc.de%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr;=udp%3A%2F%2Fopen.demonii.com%3A1337&ws;=https%3A%2F%2Fbitcoin.org%2Fbin%2F
Upgrading and downgrading

How to Upgrade
If you are running an older version, shut it down. Wait until it has completely
shut down (which might take a few minutes for older versions), then run the
installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or
bitcoind/bitcoin-qt (on Linux).
Downgrading warning
Because release 0.10.0 makes use of headers-first synchronization and parallel
block download (see further), the block files and databases are not
backwards-compatible with older versions of Bitcoin Core or other software:
  • Blocks will be stored on disk out of order (in the order they are
received, really), which makes it incompatible with some tools or
other programs. Reindexing using earlier versions will also not work
anymore as a result of this.
  • The block index database will now hold headers for which no block is
stored on disk, which earlier versions won't support.
If you want to be able to downgrade smoothly, make a backup of your entire data
directory. Without this your node will need start syncing (or importing from
bootstrap.dat) anew afterwards. It is possible that the data from a completely
synchronised 0.10 node may be usable in older versions as-is, but this is not
supported and may break as soon as the older version attempts to reindex.
This does not affect wallet forward or backward compatibility.
Notable changes

Faster synchronization
Bitcoin Core now uses 'headers-first synchronization'. This means that we first
ask peers for block headers (a total of 27 megabytes, as of December 2014) and
validate those. In a second stage, when the headers have been discovered, we
download the blocks. However, as we already know about the whole chain in
advance, the blocks can be downloaded in parallel from all available peers.
In practice, this means a much faster and more robust synchronization. On
recent hardware with a decent network link, it can be as little as 3 hours
for an initial full synchronization. You may notice a slower progress in the
very first few minutes, when headers are still being fetched and verified, but
it should gain speed afterwards.
A few RPCs were added/updated as a result of this:
  • getblockchaininfo now returns the number of validated headers in addition to
the number of validated blocks.
  • getpeerinfo lists both the number of blocks and headers we know we have in
common with each peer. While synchronizing, the heights of the blocks that we
have requested from peers (but haven't received yet) are also listed as
'inflight'.
  • A new RPC getchaintips lists all known branches of the block chain,
including those we only have headers for.
Transaction fee changes
This release automatically estimates how high a transaction fee (or how
high a priority) transactions require to be confirmed quickly. The default
settings will create transactions that confirm quickly; see the new
'txconfirmtarget' setting to control the tradeoff between fees and
confirmation times. Fees are added by default unless the 'sendfreetransactions'
setting is enabled.
Prior releases used hard-coded fees (and priorities), and would
sometimes create transactions that took a very long time to confirm.
Statistics used to estimate fees and priorities are saved in the
data directory in the fee_estimates.dat file just before
program shutdown, and are read in at startup.
New command line options for transaction fee changes:
  • -txconfirmtarget=n : create transactions that have enough fees (or priority)
so they are likely to begin confirmation within n blocks (default: 1). This setting
is over-ridden by the -paytxfee option.
  • -sendfreetransactions : Send transactions as zero-fee transactions if possible
(default: 0)
New RPC commands for fee estimation:
  • estimatefee nblocks : Returns approximate fee-per-1,000-bytes needed for
a transaction to begin confirmation within nblocks. Returns -1 if not enough
transactions have been observed to compute a good estimate.
  • estimatepriority nblocks : Returns approximate priority needed for
a zero-fee transaction to begin confirmation within nblocks. Returns -1 if not
enough free transactions have been observed to compute a good
estimate.
RPC access control changes
Subnet matching for the purpose of access control is now done
by matching the binary network address, instead of with string wildcard matching.
For the user this means that -rpcallowip takes a subnet specification, which can be
  • a single IP address (e.g. 1.2.3.4 or fe80::0012:3456:789a:bcde)
  • a network/CIDR (e.g. 1.2.3.0/24 or fe80::0000/64)
  • a network/netmask (e.g. 1.2.3.4/255.255.255.0 or fe80::0012:3456:789a:bcde/ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff)
An arbitrary number of -rpcallow arguments can be given. An incoming connection will be accepted if its origin address
matches one of them.
For example:
| 0.9.x and before | 0.10.x |
|--------------------------------------------|---------------------------------------|
| -rpcallowip=192.168.1.1 | -rpcallowip=192.168.1.1 (unchanged) |
| -rpcallowip=192.168.1.* | -rpcallowip=192.168.1.0/24 |
| -rpcallowip=192.168.* | -rpcallowip=192.168.0.0/16 |
| -rpcallowip=* (dangerous!) | -rpcallowip=::/0 (still dangerous!) |
Using wildcards will result in the rule being rejected with the following error in debug.log:
 Error: Invalid -rpcallowip subnet specification: *. Valid are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24). 
REST interface
A new HTTP API is exposed when running with the -rest flag, which allows
unauthenticated access to public node data.
It is served on the same port as RPC, but does not need a password, and uses
plain HTTP instead of JSON-RPC.
Assuming a local RPC server running on port 8332, it is possible to request:
In every case, EXT can be bin (for raw binary data), hex (for hex-encoded
binary) or json.
For more details, see the doc/REST-interface.md document in the repository.
RPC Server "Warm-Up" Mode
The RPC server is started earlier now, before most of the expensive
intialisations like loading the block index. It is available now almost
immediately after starting the process. However, until all initialisations
are done, it always returns an immediate error with code -28 to all calls.
This new behaviour can be useful for clients to know that a server is already
started and will be available soon (for instance, so that they do not
have to start it themselves).
Improved signing security
For 0.10 the security of signing against unusual attacks has been
improved by making the signatures constant time and deterministic.
This change is a result of switching signing to use libsecp256k1
instead of OpenSSL. Libsecp256k1 is a cryptographic library
optimized for the curve Bitcoin uses which was created by Bitcoin
Core developer Pieter Wuille.
There exist attacks[1] against most ECC implementations where an
attacker on shared virtual machine hardware could extract a private
key if they could cause a target to sign using the same key hundreds
of times. While using shared hosts and reusing keys are inadvisable
for other reasons, it's a better practice to avoid the exposure.
OpenSSL has code in their source repository for derandomization
and reduction in timing leaks that we've eagerly wanted to use for a
long time, but this functionality has still not made its
way into a released version of OpenSSL. Libsecp256k1 achieves
significantly stronger protection: As far as we're aware this is
the only deployed implementation of constant time signing for
the curve Bitcoin uses and we have reason to believe that
libsecp256k1 is better tested and more thoroughly reviewed
than the implementation in OpenSSL.
[1] https://eprint.iacr.org/2014/161.pdf
Watch-only wallet support
The wallet can now track transactions to and from wallets for which you know
all addresses (or scripts), even without the private keys.
This can be used to track payments without needing the private keys online on a
possibly vulnerable system. In addition, it can help for (manual) construction
of multisig transactions where you are only one of the signers.
One new RPC, importaddress, is added which functions similarly to
importprivkey, but instead takes an address or script (in hexadecimal) as
argument. After using it, outputs credited to this address or script are
considered to be received, and transactions consuming these outputs will be
considered to be sent.
The following RPCs have optional support for watch-only:
getbalance, listreceivedbyaddress, listreceivedbyaccount,
listtransactions, listaccounts, listsinceblock, gettransaction. See the
RPC documentation for those methods for more information.
Compared to using getrawtransaction, this mechanism does not require
-txindex, scales better, integrates better with the wallet, and is compatible
with future block chain pruning functionality. It does mean that all relevant
addresses need to added to the wallet before the payment, though.
Consensus library
Starting from 0.10.0, the Bitcoin Core distribution includes a consensus library.
The purpose of this library is to make the verification functionality that is
critical to Bitcoin's consensus available to other applications, e.g. to language
bindings such as [python-bitcoinlib](https://pypi.python.org/pypi/python-bitcoinlib) or
alternative node implementations.
This library is called libbitcoinconsensus.so (or, .dll for Windows).
Its interface is defined in the C header [bitcoinconsensus.h](https://github.com/bitcoin/bitcoin/blob/0.10/src/script/bitcoinconsensus.h).
In its initial version the API includes two functions:
  • bitcoinconsensus_verify_script verifies a script. It returns whether the indicated input of the provided serialized transaction
correctly spends the passed scriptPubKey under additional constraints indicated by flags
  • bitcoinconsensus_version returns the API version, currently at an experimental 0
The functionality is planned to be extended to e.g. UTXO management in upcoming releases, but the interface
for existing methods should remain stable.
Standard script rules relaxed for P2SH addresses
The IsStandard() rules have been almost completely removed for P2SH
redemption scripts, allowing applications to make use of any valid
script type, such as "n-of-m OR y", hash-locked oracle addresses, etc.
While the Bitcoin protocol has always supported these types of script,
actually using them on mainnet has been previously inconvenient as
standard Bitcoin Core nodes wouldn't relay them to miners, nor would
most miners include them in blocks they mined.
bitcoin-tx
It has been observed that many of the RPC functions offered by bitcoind are
"pure functions", and operate independently of the bitcoind wallet. This
included many of the RPC "raw transaction" API functions, such as
createrawtransaction.
bitcoin-tx is a newly introduced command line utility designed to enable easy
manipulation of bitcoin transactions. A summary of its operation may be
obtained via "bitcoin-tx --help" Transactions may be created or signed in a
manner similar to the RPC raw tx API. Transactions may be updated, deleting
inputs or outputs, or appending new inputs and outputs. Custom scripts may be
easily composed using a simple text notation, borrowed from the bitcoin test
suite.
This tool may be used for experimenting with new transaction types, signing
multi-party transactions, and many other uses. Long term, the goal is to
deprecate and remove "pure function" RPC API calls, as those do not require a
server round-trip to execute.
Other utilities "bitcoin-key" and "bitcoin-script" have been proposed, making
key and script operations easily accessible via command line.
Mining and relay policy enhancements
Bitcoin Core's block templates are now for version 3 blocks only, and any mining
software relying on its getblocktemplate must be updated in parallel to use
libblkmaker either version 0.4.2 or any version from 0.5.1 onward.
If you are solo mining, this will affect you the moment you upgrade Bitcoin
Core, which must be done prior to BIP66 achieving its 951/1001 status.
If you are mining with the stratum mining protocol: this does not affect you.
If you are mining with the getblocktemplate protocol to a pool: this will affect
you at the pool operator's discretion, which must be no later than BIP66
achieving its 951/1001 status.
The prioritisetransaction RPC method has been added to enable miners to
manipulate the priority of transactions on an individual basis.
Bitcoin Core now supports BIP 22 long polling, so mining software can be
notified immediately of new templates rather than having to poll periodically.
Support for BIP 23 block proposals is now available in Bitcoin Core's
getblocktemplate method. This enables miners to check the basic validity of
their next block before expending work on it, reducing risks of accidental
hardforks or mining invalid blocks.
Two new options to control mining policy:
  • -datacarrier=0/1 : Relay and mine "data carrier" (OP_RETURN) transactions
if this is 1.
  • -datacarriersize=n : Maximum size, in bytes, we consider acceptable for
"data carrier" outputs.
The relay policy has changed to more properly implement the desired behavior of not
relaying free (or very low fee) transactions unless they have a priority above the
AllowFreeThreshold(), in which case they are relayed subject to the rate limiter.
BIP 66: strict DER encoding for signatures
Bitcoin Core 0.10 implements BIP 66, which introduces block version 3, and a new
consensus rule, which prohibits non-DER signatures. Such transactions have been
non-standard since Bitcoin v0.8.0 (released in February 2013), but were
technically still permitted inside blocks.
This change breaks the dependency on OpenSSL's signature parsing, and is
required if implementations would want to remove all of OpenSSL from the
consensus code.
The same miner-voting mechanism as in BIP 34 is used: when 751 out of a
sequence of 1001 blocks have version number 3 or higher, the new consensus
rule becomes active for those blocks. When 951 out of a sequence of 1001
blocks have version number 3 or higher, it becomes mandatory for all blocks.
Backward compatibility with current mining software is NOT provided, thus miners
should read the first paragraph of "Mining and relay policy enhancements" above.
0.10.0 Change log

Detailed release notes follow. This overview includes changes that affect external
behavior, not code moves, refactors or string updates.
RPC:
  • f923c07 Support IPv6 lookup in bitcoin-cli even when IPv6 only bound on localhost
  • b641c9c Fix addnode "onetry": Connect with OpenNetworkConnection
  • 171ca77 estimatefee / estimatepriority RPC methods
  • b750cf1 Remove cli functionality from bitcoind
  • f6984e8 Add "chain" to getmininginfo, improve help in getblockchaininfo
  • 99ddc6c Add nLocalServices info to RPC getinfo
  • cf0c47b Remove getwork() RPC call
  • 2a72d45 prioritisetransaction
  • e44fea5 Add an option -datacarrier to allow users to disable relaying/mining data carrier transactions
  • 2ec5a3d Prevent easy RPC memory exhaustion attack
  • d4640d7 Added argument to getbalance to include watchonly addresses and fixed errors in balance calculation
  • 83f3543 Added argument to listaccounts to include watchonly addresses
  • 952877e Showing 'involvesWatchonly' property for transactions returned by 'listtransactions' and 'listsinceblock'. It is only appended when the transaction involves a watchonly address
  • d7d5d23 Added argument to listtransactions and listsinceblock to include watchonly addresses
  • f87ba3d added includeWatchonly argument to 'gettransaction' because it affects balance calculation
  • 0fa2f88 added includedWatchonly argument to listreceivedbyaddress/...account
  • 6c37f7f getrawchangeaddress: fail when keypool exhausted and wallet locked
  • ff6a7af getblocktemplate: longpolling support
  • c4a321f Add peerid to getpeerinfo to allow correlation with the logs
  • 1b4568c Add vout to ListTransactions output
  • b33bd7a Implement "getchaintips" RPC command to monitor blockchain forks
  • 733177e Remove size limit in RPC client, keep it in server
  • 6b5b7cb Categorize rpc help overview
  • 6f2c26a Closely track mempool byte total. Add "getmempoolinfo" RPC
  • aa82795 Add detailed network info to getnetworkinfo RPC
  • 01094bd Don't reveal whether password is <20 or >20 characters in RPC
  • 57153d4 rpc: Compute number of confirmations of a block from block height
  • ff36cbe getnetworkinfo: export local node's client sub-version string
  • d14d7de SanitizeString: allow '(' and ')'
  • 31d6390 Fixed setaccount accepting foreign address
  • b5ec5fe update getnetworkinfo help with subversion
  • ad6e601 RPC additions after headers-first
  • 33dfbf5 rpc: Fix leveldb iterator leak, and flush before gettxoutsetinfo
  • 2aa6329 Enable customising node policy for datacarrier data size with a -datacarriersize option
  • f877aaa submitblock: Use a temporary CValidationState to determine accurately the outcome of ProcessBlock
  • e69a587 submitblock: Support for returning specific rejection reasons
  • af82884 Add "warmup mode" for RPC server
  • e2655e0 Add unauthenticated HTTP REST interface to public blockchain data
  • 683dc40 Disable SSLv3 (in favor of TLS) for the RPC client and server
  • 44b4c0d signrawtransaction: validate private key
  • 9765a50 Implement BIP 23 Block Proposal
  • f9de17e Add warning comment to getinfo
Command-line options:
  • ee21912 Use netmasks instead of wildcards for IP address matching
  • deb3572 Add -rpcbind option to allow binding RPC port on a specific interface
  • 96b733e Add -version option to get just the version
  • 1569353 Add -stopafterblockimport option
  • 77cbd46 Let -zapwallettxes recover transaction meta data
  • 1c750db remove -tor compatibility code (only allow -onion)
  • 4aaa017 rework help messages for fee-related options
  • 4278b1d Clarify error message when invalid -rpcallowip
  • 6b407e4 -datadir is now allowed in config files
  • bdd5b58 Add option -sysperms to disable 077 umask (create new files with system default umask)
  • cbe39a3 Add "bitcoin-tx" command line utility and supporting modules
  • dbca89b Trigger -alertnotify if network is upgrading without you
  • ad96e7c Make -reindex cope with out-of-order blocks
  • 16d5194 Skip reindexed blocks individually
  • ec01243 --tracerpc option for regression tests
  • f654f00 Change -genproclimit default to 1
  • 3c77714 Make -proxy set all network types, avoiding a connect leak
  • 57be955 Remove -printblock, -printblocktree, and -printblockindex
  • ad3d208 remove -maxorphanblocks config parameter since it is no longer functional
Block and transaction handling:
  • 7a0e84d ProcessGetData(): abort if a block file is missing from disk
  • 8c93bf4 LoadBlockIndexDB(): Require block db reindex if any blk*.dat files are missing
  • 77339e5 Get rid of the static chainMostWork (optimization)
  • 4e0eed8 Allow ActivateBestChain to release its lock on cs_main
  • 18e7216 Push cs_mains down in ProcessBlock
  • fa126ef Avoid undefined behavior using CFlatData in CScript serialization
  • 7f3b4e9 Relax IsStandard rules for pay-to-script-hash transactions
  • c9a0918 Add a skiplist to the CBlockIndex structure
  • bc42503 Use unordered_map for CCoinsViewCache with salted hash (optimization)
  • d4d3fbd Do not flush the cache after every block outside of IBD (optimization)
  • ad08d0b Bugfix: make CCoinsViewMemPool support pruned entries in underlying cache
  • 5734d4d Only remove actualy failed blocks from setBlockIndexValid
  • d70bc52 Rework block processing benchmark code
  • 714a3e6 Only keep setBlockIndexValid entries that are possible improvements
  • ea100c7 Reduce maximum coinscache size during verification (reduce memory usage)
  • 4fad8e6 Reject transactions with excessive numbers of sigops
  • b0875eb Allow BatchWrite to destroy its input, reducing copying (optimization)
  • 92bb6f2 Bypass reloading blocks from disk (optimization)
  • 2e28031 Perform CVerifyDB on pcoinsdbview instead of pcoinsTip (reduce memory usage)
  • ab15b2e Avoid copying undo data (optimization)
  • 341735e Headers-first synchronization
  • afc32c5 Fix rebuild-chainstate feature and improve its performance
  • e11b2ce Fix large reorgs
  • ed6d1a2 Keep information about all block files in memory
  • a48f2d6 Abstract context-dependent block checking from acceptance
  • 7e615f5 Fixed mempool sync after sending a transaction
  • 51ce901 Improve chainstate/blockindex disk writing policy
  • a206950 Introduce separate flushing modes
  • 9ec75c5 Add a locking mechanism to IsInitialBlockDownload to ensure it never goes from false to true
  • 868d041 Remove coinbase-dependant transactions during reorg
  • 723d12c Remove txn which are invalidated by coinbase maturity during reorg
  • 0cb8763 Check against MANDATORY flags prior to accepting to mempool
  • 8446262 Reject headers that build on an invalid parent
  • 008138c Bugfix: only track UTXO modification after lookup
P2P protocol and network code:
  • f80cffa Do not trigger a DoS ban if SCRIPT_VERIFY_NULLDUMMY fails
  • c30329a Add testnet DNS seed of Alex Kotenko
  • 45a4baf Add testnet DNS seed of Andreas Schildbach
  • f1920e8 Ping automatically every 2 minutes (unconditionally)
  • 806fd19 Allocate receive buffers in on the fly
  • 6ecf3ed Display unknown commands received
  • aa81564 Track peers' available blocks
  • caf6150 Use async name resolving to improve net thread responsiveness
  • 9f4da19 Use pong receive time rather than processing time
  • 0127a9b remove SOCKS4 support from core and GUI, use SOCKS5
  • 40f5cb8 Send rejects and apply DoS scoring for errors in direct block validation
  • dc942e6 Introduce whitelisted peers
  • c994d2e prevent SOCKET leak in BindListenPort()
  • a60120e Add built-in seeds for .onion
  • 60dc8e4 Allow -onlynet=onion to be used
  • 3a56de7 addrman: Do not propagate obviously poor addresses onto the network
  • 6050ab6 netbase: Make SOCKS5 negotiation interruptible
  • 604ee2a Remove tx from AlreadyAskedFor list once we receive it, not when we process it
  • efad808 Avoid reject message feedback loops
  • 71697f9 Separate protocol versioning from clientversion
  • 20a5f61 Don't relay alerts to peers before version negotiation
  • b4ee0bd Introduce preferred download peers
  • 845c86d Do not use third party services for IP detection
  • 12a49ca Limit the number of new addressses to accumulate
  • 35e408f Regard connection failures as attempt for addrman
  • a3a7317 Introduce 10 minute block download timeout
  • 3022e7d Require sufficent priority for relay of free transactions
  • 58fda4d Update seed IPs, based on bitcoin.sipa.be crawler data
  • 18021d0 Remove bitnodes.io from dnsseeds.
Validation:
  • 6fd7ef2 Also switch the (unused) verification code to low-s instead of even-s
  • 584a358 Do merkle root and txid duplicates check simultaneously
  • 217a5c9 When transaction outputs exceed inputs, show the offending amounts so as to aid debugging
  • f74fc9b Print input index when signature validation fails, to aid debugging
  • 6fd59ee script.h: set_vch() should shift a >32 bit value
  • d752ba8 Add SCRIPT_VERIFY_SIGPUSHONLY (BIP62 rule 2) (test only)
  • 698c6ab Add SCRIPT_VERIFY_MINIMALDATA (BIP62 rules 3 and 4) (test only)
  • ab9edbd script: create sane error return codes for script validation and remove logging
  • 219a147 script: check ScriptError values in script tests
  • 0391423 Discourage NOPs reserved for soft-fork upgrades
  • 98b135f Make STRICTENC invalid pubkeys fail the script rather than the opcode
  • 307f7d4 Report script evaluation failures in log and reject messages
  • ace39db consensus: guard against openssl's new strict DER checks
  • 12b7c44 Improve robustness of DER recoding code
  • 76ce5c8 fail immediately on an empty signature
Build system:
  • f25e3ad Fix build in OS X 10.9
  • 65e8ba4 build: Switch to non-recursive make
  • 460b32d build: fix broken boost chrono check on some platforms
  • 9ce0774 build: Fix windows configure when using --with-qt-libdir
  • ea96475 build: Add mention of --disable-wallet to bdb48 error messages
  • 1dec09b depends: add shared dependency builder
  • c101c76 build: Add --with-utils (bitcoin-cli and bitcoin-tx, default=yes). Help string consistency tweaks. Target sanity check fix
  • e432a5f build: add option for reducing exports (v2)
  • 6134b43 Fixing condition 'sabotaging' MSVC build
  • af0bd5e osx: fix signing to make Gatekeeper happy (again)
  • a7d1f03 build: fix dynamic boost check when --with-boost= is used
  • d5fd094 build: fix qt test build when libprotobuf is in a non-standard path
  • 2cf5f16 Add libbitcoinconsensus library
  • 914868a build: add a deterministic dmg signer
  • 2d375fe depends: bump openssl to 1.0.1k
  • b7a4ecc Build: Only check for boost when building code that requires it
Wallet:
  • b33d1f5 Use fee/priority estimates in wallet CreateTransaction
  • 4b7b1bb Sanity checks for estimates
  • c898846 Add support for watch-only addresses
  • d5087d1 Use script matching rather than destination matching for watch-only
  • d88af56 Fee fixes
  • a35b55b Dont run full check every time we decrypt wallet
  • 3a7c348 Fix make_change to not create half-satoshis
  • f606bb9 fix a possible memory leak in CWalletDB::Recover
  • 870da77 fix possible memory leaks in CWallet::EncryptWallet
  • ccca27a Watch-only fixes
  • 9b1627d [Wallet] Reduce minTxFee for transaction creation to 1000 satoshis
  • a53fd41 Deterministic signing
  • 15ad0b5 Apply AreSane() checks to the fees from the network
  • 11855c1 Enforce minRelayTxFee on wallet created tx and add a maxtxfee option
GUI:
  • c21c74b osx: Fix missing dock menu with qt5
  • b90711c Fix Transaction details shows wrong To:
  • 516053c Make links in 'About Bitcoin Core' clickable
  • bdc83e8 Ensure payment request network matches client network
  • 65f78a1 Add GUI view of peer information
  • 06a91d9 VerifyDB progress reporting
  • fe6bff2 Add BerkeleyDB version info to RPCConsole
  • b917555 PeerTableModel: Fix potential deadlock. #4296
  • dff0e3b Improve rpc console history behavior
  • 95a9383 Remove CENT-fee-rule from coin control completely
  • 56b07d2 Allow setting listen via GUI
  • d95ba75 Log messages with type>QtDebugMsg as non-debug
  • 8969828 New status bar Unit Display Control and related changes
  • 674c070 seed OpenSSL PNRG with Windows event data
  • 509f926 Payment request parsing on startup now only changes network if a valid network name is specified
  • acd432b Prevent balloon-spam after rescan
  • 7007402 Implement SI-style (thin space) thoudands separator
  • 91cce17 Use fixed-point arithmetic in amount spinbox
  • bdba2dd Remove an obscure option no-one cares about
  • bd0aa10 Replace the temporary file hack currently used to change Bitcoin-Qt's dock icon (OS X) with a buffer-based solution
  • 94e1b9e Re-work overviewpage UI
  • 8bfdc9a Better looking trayicon
  • b197bf3 disable tray interactions when client model set to 0
  • 1c5f0af Add column Watch-only to transactions list
  • 21f139b Fix tablet crash. closes #4854
  • e84843c Broken addresses on command line no longer trigger testnet
  • a49f11d Change splash screen to normal window
  • 1f9be98 Disable App Nap on OSX 10.9+
  • 27c3e91 Add proxy to options overridden if necessary
  • 4bd1185 Allow "emergency" shutdown during startup
  • d52f072 Don't show wallet options in the preferences menu when running with -disablewallet
  • 6093aa1 Qt: QProgressBar CPU-Issue workaround
  • 0ed9675 [Wallet] Add global boolean whether to send free transactions (default=true)
  • ed3e5e4 [Wallet] Add global boolean whether to pay at least the custom fee (default=true)
  • e7876b2 [Wallet] Prevent user from paying a non-sense fee
  • c1c9d5b Add Smartfee to GUI
  • e0a25c5 Make askpassphrase dialog behave more sanely
  • 94b362d On close of splashscreen interrupt verifyDB
  • b790d13 English translation update
  • 8543b0d Correct tooltip on address book page
Tests:
  • b41e594 Fix script test handling of empty scripts
  • d3a33fc Test CHECKMULTISIG with m == 0 and n == 0
  • 29c1749 Let tx (in)valid tests use any SCRIPT_VERIFY flag
  • 6380180 Add rejection of non-null CHECKMULTISIG dummy values
  • 21bf3d2 Add tests for BoostAsioToCNetAddr
  • b5ad5e7 Add Python test for -rpcbind and -rpcallowip
  • 9ec0306 Add CODESEPARATOFindAndDelete() tests
  • 75ebced Added many rpc wallet tests
  • 0193fb8 Allow multiple regression tests to run at once
  • 92a6220 Hook up sanity checks
  • 3820e01 Extend and move all crypto tests to crypto_tests.cpp
  • 3f9a019 added list/get received by address/ account tests
  • a90689f Remove timing-based signature cache unit test
  • 236982c Add skiplist unit tests
  • f4b00be Add CChain::GetLocator() unit test
  • b45a6e8 Add test for getblocktemplate longpolling
  • cdf305e Set -discover=0 in regtest framework
  • ed02282 additional test for OP_SIZE in script_valid.json
  • 0072d98 script tests: BOOLAND, BOOLOR decode to integer
  • 833ff16 script tests: values that overflow to 0 are true
  • 4cac5db script tests: value with trailing 0x00 is true
  • 89101c6 script test: test case for 5-byte bools
  • d2d9dc0 script tests: add tests for CHECKMULTISIG limits
  • d789386 Add "it works" test for bitcoin-tx
  • df4d61e Add bitcoin-tx tests
  • aa41ac2 Test IsPushOnly() with invalid push
  • 6022b5d Make script_{valid,invalid}.json validation flags configurable
  • 8138cbe Add automatic script test generation, and actual checksig tests
  • ed27e53 Add coins_tests with a large randomized CCoinViewCache test
  • 9df9cf5 Make SCRIPT_VERIFY_STRICTENC compatible with BIP62
  • dcb9846 Extend getchaintips RPC test
  • 554147a Ensure MINIMALDATA invalid tests can only fail one way
  • dfeec18 Test every numeric-accepting opcode for correct handling of the numeric minimal encoding rule
  • 2b62e17 Clearly separate PUSHDATA and numeric argument MINIMALDATA tests
  • 16d78bd Add valid invert of invalid every numeric opcode tests
  • f635269 tests: enable alertnotify test for Windows
  • 7a41614 tests: allow rpc-tests to get filenames for bitcoind and bitcoin-cli from the environment
  • 5122ea7 tests: fix forknotify.py on windows
  • fa7f8cd tests: remove old pull-tester scripts
  • 7667850 tests: replace the old (unused since Travis) tests with new rpc test scripts
  • f4e0aef Do signature-s negation inside the tests
  • 1837987 Optimize -regtest setgenerate block generation
  • 2db4c8a Fix node ranges in the test framework
  • a8b2ce5 regression test only setmocktime RPC call
  • daf03e7 RPC tests: create initial chain with specific timestamps
  • 8656dbb Port/fix txnmall.sh regression test
  • ca81587 Test the exact order of CHECKMULTISIG sig/pubkey evaluation
  • 7357893 Prioritize and display -testsafemode status in UI
  • f321d6b Add key generation/verification to ECC sanity check
  • 132ea9b miner_tests: Disable checkpoints so they don't fail the subsidy-change test
  • bc6cb41 QA RPC tests: Add tests block block proposals
  • f67a9ce Use deterministically generated script tests
  • 11d7a7d [RPC] add rpc-test for http keep-alive (persistent connections)
  • 34318d7 RPC-test based on invalidateblock for mempool coinbase spends
  • 76ec867 Use actually valid transactions for script tests
  • c8589bf Add actual signature tests
  • e2677d7 Fix smartfees test for change to relay policy
  • 263b65e tests: run sanity checks in tests too
Miscellaneous:
  • 122549f Fix incorrect checkpoint data for testnet3
  • 5bd02cf Log used config file to debug.log on startup
  • 68ba85f Updated Debian example bitcoin.conf with config from wiki + removed some cruft and updated comments
  • e5ee8f0 Remove -beta suffix
  • 38405ac Add comment regarding experimental-use service bits
  • be873f6 Issue warning if collecting RandSeed data failed
  • 8ae973c Allocate more space if necessary in RandSeedAddPerfMon
  • 675bcd5 Correct comment for 15-of-15 p2sh script size
  • fda3fed libsecp256k1 integration
  • 2e36866 Show nodeid instead of addresses in log (for anonymity) unless otherwise requested
  • cd01a5e Enable paranoid corruption checks in LevelDB >= 1.16
  • 9365937 Add comment about never updating nTimeOffset past 199 samples
  • 403c1bf contrib: remove getwork-based pyminer (as getwork API call has been removed)
  • 0c3e101 contrib: Added systemd .service file in order to help distributions integrate bitcoind
  • 0a0878d doc: Add new DNSseed policy
  • 2887bff Update coding style and add .clang-format
  • 5cbda4f Changed LevelDB cursors to use scoped pointers to ensure destruction when going out of scope
  • b4a72a7 contrib/linearize: split output files based on new-timestamp-year or max-file-size
  • e982b57 Use explicit fflush() instead of setvbuf()
  • 234bfbf contrib: Add init scripts and docs for Upstart and OpenRC
  • 01c2807 Add warning about the merkle-tree algorithm duplicate txid flaw
  • d6712db Also create pid file in non-daemon mode
  • 772ab0e contrib: use batched JSON-RPC in linarize-hashes (optimization)
  • 7ab4358 Update bash-completion for v0.10
  • 6e6a36c contrib: show pull # in prompt for github-merge script
  • 5b9f842 Upgrade leveldb to 1.18, make chainstate databases compatible between ARM and x86 (issue #2293)
  • 4e7c219 Catch UTXO set read errors and shutdown
  • 867c600 Catch LevelDB errors during flush
  • 06ca065 Fix CScriptID(const CScript& in) in empty script case
Credits

Thanks to everyone who contributed to this release:
  • 21E14
  • Adam Weiss
  • Aitor Pazos
  • Alexander Jeng
  • Alex Morcos
  • Alon Muroch
  • Andreas Schildbach
  • Andrew Poelstra
  • Andy Alness
  • Ashley Holman
  • Benedict Chan
  • Ben Holden-Crowther
  • Bryan Bishop
  • BtcDrak
  • Christian von Roques
  • Clinton Christian
  • Cory Fields
  • Cozz Lovan
  • daniel
  • Daniel Kraft
  • David Hill
  • Derek701
  • dexX7
  • dllud
  • Dominyk Tiller
  • Doug
  • elichai
  • elkingtowa
  • ENikS
  • Eric Shaw
  • Federico Bond
  • Francis GASCHET
  • Gavin Andresen
  • Giuseppe Mazzotta
  • Glenn Willen
  • Gregory Maxwell
  • gubatron
  • HarryWu
  • himynameismartin
  • Huang Le
  • Ian Carroll
  • imharrywu
  • Jameson Lopp
  • Janusz Lenar
  • JaSK
  • Jeff Garzik
  • JL2035
  • Johnathan Corgan
  • Jonas Schnelli
  • jtimon
  • Julian Haight
  • Kamil Domanski
  • kazcw
  • kevin
  • kiwigb
  • Kosta Zertsekel
  • LongShao007
  • Luke Dashjr
  • Mark Friedenbach
  • Mathy Vanvoorden
  • Matt Corallo
  • Matthew Bogosian
  • Micha
  • Michael Ford
  • Mike Hearn
  • mrbandrews
  • mruddy
  • ntrgn
  • Otto Allmendinger
  • paveljanik
  • Pavel Vasin
  • Peter Todd
  • phantomcircuit
  • Philip Kaufmann
  • Pieter Wuille
  • pryds
  • randy-waterhouse
  • R E Broadley
  • Rose Toomey
  • Ross Nicoll
  • Roy Badami
  • Ruben Dario Ponticelli
  • Rune K. Svendsen
  • Ryan X. Charles
  • Saivann
  • sandakersmann
  • SergioDemianLerner
  • shshshsh
  • sinetek
  • Stuart Cardall
  • Suhas Daftuar
  • Tawanda Kembo
  • Teran McKinney
  • tm314159
  • Tom Harding
  • Trevin Hofmann
  • Whit J
  • Wladimir J. van der Laan
  • Yoichi Hirai
  • Zak Wilcox
As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).
Also lots of thanks to the bitcoin.org website team David A. Harding and Saivann Carignan.
Wladimir
original: http://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-February/007480.html
submitted by bitcoin-devlist-bot to bitcoin_devlist [link] [comments]

Bitcoin-QT 0.9 disponível para download

The Core Developers of Bitcoin released the 0.9.0 FINAL of Bitcoin Core (aka Bitcoin QT).
DOWNLOAD:
This is a Final Version, but its the same as 0.9.0rc3
Sources: https://github.com/bitcoin/bitcoin/releases http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.9.0/ https://bitcoin.org/bin/0.9.0/README.txt
Bitcoin Core version 0.9.0 is now available from:
https://bitcoin.org/bin/0.9.0/
This is a release candidate for a new major version. A major version brings both new features and bug fixes.
Please report bugs using the issue tracker at github:
https://github.com/bitcoin/bitcoin/issues

How to Upgrade

If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), uninstall all earlier versions of Bitcoin, then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).
If you are upgrading from version 0.7.2 or earlier, the first time you run 0.9.0 your blockchain files will be re-indexed, which will take anywhere from 30 minutes to several hours, depending on the speed of your machine.
On Windows, do not forget to uninstall all earlier versions of the Bitcoin client first, especially if you are switching to the 64-bit version.

Windows 64-bit installer

New in 0.9.0 is the Windows 64-bit version of the client. There have been frequent reports of users running out of virtual memory on 32-bit systems during the initial sync. Because of this it is recommended to install the 64-bit version if your system supports it.
NOTE: Release candidate 2 Windows binaries are not code-signed; use PGP and the SHA256SUMS.asc file to make sure your binaries are correct. In the final 0.9.0 release, Windows setup.exe binaries will be code-signed.

OSX 10.5 / 32-bit no longer supported

0.9.0 drops support for older Macs. The minimum requirements are now: * A 64-bit-capable CPU (see http://support.apple.com/kb/ht3696); * Mac OS 10.6 or later (see https://support.apple.com/kb/ht1633).

Downgrading warnings

The 'chainstate' for this release is not always compatible with previous releases, so if you run 0.9 and then decide to switch back to a 0.8.x release you might get a blockchain validation error when starting the old release (due to 'pruned outputs' being omitted from the index of unspent transaction outputs).
Running the old release with the -reindex option will rebuild the chainstate data structures and correct the problem.
Also, the first time you run a 0.8.x release on a 0.9 wallet it will rescan the blockchain for missing spent coins, which will take a long time (tens of minutes on a typical machine).

Rebranding to Bitcoin Core

To reduce confusion between Bitcoin-the-network and Bitcoin-the-software we have renamed the reference client to Bitcoin Core.

Autotools build system

For 0.9.0 we switched to an autotools-based build system instead of individual (q)makefiles.
Using the standard "./autogen.sh; ./configure; make" to build Bitcoin-Qt and bitcoind makes it easier for experienced open source developers to contribute to the project.
Be sure to check doc/build-*.md for your platform before building from source.

Bitcoin-cli

Another change in the 0.9 release is moving away from the bitcoind executable functioning both as a server and as a RPC client. The RPC client functionality ("tell the running bitcoin daemon to do THIS") was split into a separate executable, 'bitcoin-cli'. The RPC client code will eventually be removed from bitcoind, but will be kept for backwards compatibility for a release or two.

walletpassphrase RPC

The behavior of the walletpassphrase RPC when the wallet is already unlocked has changed between 0.8 and 0.9.
The 0.8 behavior of walletpassphrase is to fail when the wallet is already unlocked:
> walletpassphrase 1000 walletunlocktime = now + 1000 > walletpassphrase 10 Error: Wallet is already unlocked (old unlock time stays) 
The new behavior of walletpassphrase is to set a new unlock time overriding the old one:
> walletpassphrase 1000 walletunlocktime = now + 1000 > walletpassphrase 10 walletunlocktime = now + 10 (overriding the old unlock time) 

Transaction malleability-related fixes

This release contains a few fixes for transaction ID (TXID) malleability issues:

Transaction Fees

This release drops the default fee required to relay transactions across the network and for miners to consider the transaction in their blocks to 0.01mBTC per kilobyte.
Note that getting a transaction relayed across the network does NOT guarantee that the transaction will be accepted by a miner; by default, miners fill their blocks with 50 kilobytes of high-priority transactions, and then with 700 kilobytes of the highest-fee-per-kilobyte transactions.
The minimum relay/mining fee-per-kilobyte may be changed with the minrelaytxfee option. Note that previous releases incorrectly used the mintxfee setting to determine which low-priority transactions should be considered for inclusion in blocks.
The wallet code still uses a default fee for low-priority transactions of 0.1mBTC per kilobyte. During periods of heavy transaction volume, even this fee may not be enough to get transactions confirmed quickly; the mintxfee option may be used to override the default.

0.9.0 Release notes

RPC:
Command-line options:
Block-chain handling and storage:
Wallet:
Mining:
Protocol and network:
Validation:
Build system:
GUI:
submitted by allex2501 to BrasilBitcoin [link] [comments]

Best Bitcoin Miner Machine Free download ❤️ Best BTC Miners in 2020 Bitcoin Miner Pro 2020....Without Any Withdrawal Fee Best Bitcoin Mining Software 2020 BITCOIN GENERATOR FREE BITCOIN MINER 2020 100% LEGIT BITCOIN MONEY Best Bitcoin Miner in 2020 Best Bitcoin Mining Software That Work in 2020

Bitcoin-cli stop A complete list of commands is available in the Bitcoin.org developer reference. Change bitcoin data directory [email protected]'s GUI Miner. Gold iPhone Aktien App 6, SVPool set bitcoin data directory guiminer holds of global Bitcoin BCH hash power.Anyone bitcoin wallet address meaning knows more? Bitcoin Security Symbol In Bitcoin Core, it is fairly easy to remove a transaction from your wallet so that you must start Bitcoin Core with the -datadir=<path> option where <path> is When you're using Bitcoin-qt or Darkcoin-qt you are connected to what is called a p2p Each solo miner and bitcoin qt exe datadir mining pool has its own "work data" it is crunching For Home » Bitcoin Miner Software Free Download Free Bitcoin Generate Software bitcoin qt exe datadir 2017 Harris Bitcoin mark andrew vehicle trading Miner Up to 1Btc/Day. Once mining begins, you'll be able to see your mining statistics all in one place, letting you know what your hash rate is, your total shares accepted, and the total number of Team Red Miner 0.7.4 Addressing 4GB VRAM GPUs Support for Ethash; New XMRig 6.0.0-Beta Miner With KAWPOW Support for AMD and Nvidia GPUs; New SRBMiner-MULTI Miner 0.4.5 With Support for Epic Cash (EPIC) Bitmain Antminer T19 Bitcoin ASIC Now Up for Pre-Order; PhoenixMiner 5.0b Update Addressing Support for AMD Cards With 4GB VRAM Move you entire .bitcoin folder to the new location, except for bitcoin.conf which you must leave where it is in the existing .bitcoin folder. Edit bitcoin.conf to add datadir={full path to new .bitcoin folder}. Start Bitcoin Core and check properly that everything is alright, your wallet is accessible and, balances correct, etc.

[index] [29667] [15058] [13080] [5258] [4467] [28095] [28584] [25503] [5851] [3371]

Best Bitcoin Miner Machine Free download ❤️ Best BTC Miners in 2020

#Bitcoin #Miner #Machine a graphical frontend for mining Bitcoin, providing a convenient way to operate Bitcoin miners from a graphical interface. It supports both AMD and NVIDIA GPUs, as well as ... The best bitcoin miner what i use was able to mine 0.00003 BTC per day with my GPU,when this miner can mine at least 1.7 BTC per day with your CPU,not with GPU. Yes,this is how much power have ... Bitcoin Miner Software is a graphical fronted for mining Bitcoin, providing a convenient way to operate Bitcoin miners from a graphical interface. It supports both AMD and NVIDIA GPUs, as well as ... bitcoin miner x2, bitcoin miner pc, bitcoin miner APK, bitcoin miner free, bitcoin price, bitcoin kurs, bitcoin news, bitcoin mining, bitcoin to usd, bitcoin wallet, Bitcoin Miner Ultimate 2020 - NEW VERSION UPDATED https://bit.ly/2UX7l4n GET BTC MINER ULTIMATE: https://bit.ly/2UX7l4n bitcoin miner, bitcoin tool, btc miner pro, bitcoin generator, bitcoin earn ...

Flag Counter