I am currently running a pywallet --recover on the entirety of my mac hd that was used since 2013. i previously scanned stuff like the windows VM i used most of the time and a timemachine image from late 2013 and was able to check the balance by tediously grepping solely the addresses into a newline seperated file with only addr's and used the unix split function to create 8 different 1k lists.
I would then import these as watch only into electrum but even with only 1000 electrum takes a really long time to sync (and as far as i can tell theres no log file to allow me to indicate progress. my network monitor often shows no data transfer leading me to believe that electrum is quitting querying)
I would like a solution that is both stable and efficient. You could query online api's but they rate limit real fast and even utilizing multiple ones, you're bound to hit the limit fast on 80% of them pretty quickly.
Also keep in mind that every bitcoin private key has both a compressed and uncompressed address so while pywallet may say 100 keys, its 200 addresses to check.
I also would like to be able to check this every once in a while to see if any of the addresses have seen new activity. Maybe every month or so, so i'm willing to wait an hour to do it but I would like to have some notion of progress and no ambiguous malfunctions like i experienced with electrum.
What I have used so far (and some might find useful for smaller amounts)
- Check Balance chkblnc.jar (bitcointalk '14) download source+jar+Readme It s simple as putting addr's in the folder inside in.txt and it will output balances but it quickly throws an exception because of a 429 (too many requests) even with small numbers of addr's. Maybe I'll code in some fallback alternative api's
- Electrum watch only--problem explained above. Try it yourself with a long list of addresses. No indication of progress being made and often requires constant reopening to finally reach full sync
- Easy Balance Checker (github) A simple html page that returns balances upon entering a list of addresses. Uses blockchain.info as main source and has blockr.io and biteasy as a backup. The problem is that since it's within a browser, putting 15k addresses at once stresses your browser pretty hard.
Does anyone have any solution? Is there a way to download the current state of the entire network address balances? Don't need to be cryptographically sound like building up a db or something because i can check it via third party. Having a list of all addresses with balances would allow for a grep that I could run overnight. While it probably would take a while, at least theres always going to be progress and one can tell where they are at on their list.
Side question: is there a way to convert hex keys en masse (or wif if it takes the extra step of converting back to hex
) to litecoin? I'm going to assume that some of the keys recovered by pywallet are litecoin keys. I would then need the same process for the ltc network which I imagine would be even tougher.
If I find some cash (which I am optimistic about) I will send you 50$ for linking to a solution that fits my needs to all above. At minimum I will pay 25$ even if theres no cash on my end.
wallet, also known as blockchain.info
. The service began in August of 2011, with Android
Blockchain has been plagued with many minor and major security issues, from man-in-the-middle attack vulnerabilities to invalid key generation code. These security oversights have resulted in frequent theft of user funds.
In a 2015 security issue with Blockchain's Android wallet, it was discovered that the App was using unencrypted HTTP connections to the third party web site random.org in order to generate the private keys for the wallet. This exposed funds in the wallet to a variety of attacks: man in the middle attacks where private keys could be stolen by network attackers, third party attacks where the operators of random.org could have stolen funds from the wallet, and service change issues where the random.org could stop returning dependably random numbers. The issue was discovered when funds were in fact lost
, through an unexpected change in the response data from random.org that led to private keys being guessable and therefore funds being left open to theft by third parties.
In a 2014 security issue with Blockchain's web wallet, it was discovered that random number generation was flawed due to bad code commit. White hat hacker Johoe was able to successfully obtain hundreds of Blockchain users' bitcoins
by exploiting this vulnerability.
Up until the end of 2014
, the web wallet had a major security issue with the way that it dealt with failures to connect to its real time data service. When the connection failed, it would retry, but the retry would not be encrypted, allowing man in the middle attacks on the private wallet data: an attacker could push invalid data to the web client causing loss of funds.
In 2012, investor in Blockchain and Bitcoin personality Roger Ver was allowed to have access to the admin panel, which he abused
to publicly reveal private information about someone whom he accidentally sent Bitcoins to in order to motivate them to return the funds. Through this incident, it was also revealed that Blockchain was recording and indexing user information against Blockchain queries, in a way that helped to make compromising user privacy much easier.
The Blockchain wallet offered a service called SharedCoin
to ostensibly improve the privacy of Bitcoins sent through a special sending mechanism. Sending through SharedCoin promised to match multiple users to share a transaction where funds in the transaction were split up and sent to multiple destinations, obscuring the chain of ownership. However this service's privacy protection was proved to be trivial to defeat, as outlined by Kristov Atlas in his report Weak Privacy Guarantees for SharedCoin Mixing Service
The CEO of Blockchain Peter Smith revealed in a blog post in 2016 that his company is monitoring and compiling statistics about the nature and destination of transactions
made by wallet users, indicating that users should not have an expectation of financial privacy in using the service.
Rich Client Security Model
The concept behind the Blockchain wallet is one in which the web client is heavily responsible for the functionality of the wallet, as opposed to the traditional custodial model of web wallets where a server holds the user's account credit information on file and spends and holds from an aggregated set of funds.
The theoretical advantage behind this model is an improvement of security, portability and service legal exposure.
From a security perspective, custodial wallets often suffer from unauthorized movement of funds, due to the inherent complexities of securing large amounts of funds that also must be available to move quickly at a clients' request. Through fire-walling each wallet's funds off from each other by storing the funds in encrypted files, it is theorized that security breaches should be more limited in scope. Unfortunately, for ease of use reasons, the wallet does not encourage or require a very high level of entropy in encrypted wallet funds, meaning the benefits of this security model are somewhat muted and in some cases, actually could be seen to be at a lower level of security than a custodial alternative.
Originally, Blockchain did not mitigate much against the weak encryption scheme, with wallets being protected against arbitrary attacker download through the use of what they called a "wallet identifier", or a uniquely generated id that served as a kind of password. This identifier suffered from a spate of security issues: users forgot their identifier and requested standard usernames, or users didn't keep their identifier secret. Since the knowledge of the identifier or username allowed an attacker to download the wallet, wallets with weak passwords suffered attacks where users lost funds. The scheme was later improved through rate limiting and multiple factor authentication, which mitigated the issue to a large degree.
From a portability perspective, lack of standardization in wallet files and wallet backups has presented problems for the wallet. In recent iterations this issue was improved, but users of previous versions of the wallet were left to the wind regarding their backup files: backup data present, but stored in a format not straightforward to access.
Legally, the concept of a rich client web wallet has yet to be tested, however that may point towards a vindication of this model. The author of the web service can argue: they are separate and apart from any money transmission, funds transferred are authored and executed by other parties, they are merely the neutral software mechanism.
Craig Steven Wright
Australian software enthusiast Craig Steven Wright
, also known as CSW, born in October of 1970
, is notable for making an unsubstantiated claim to be Satoshi Nakamoto in May of 2016.
It is known that Craig Wright is definitely a software enthusiast. He volunteered as an unpaid computer science lecturer at Charles Sturt University and paid to complete various technical certification tests: a GIAC certification in Compliance and Audits, a GSE Malware certification, and a GSECompliance certification.
Craig has claimed to have a doctorate in computer science, although when contacted Charles Sturt University made a statement to the contrary
. CSU further went on to contradict his characterization of his employment there, clarifying that the position he had previously referred to was an unpaid volunteer role.
Craig has often referred to himself as a doctor in software contexts, but his only doctorate claim that is not questioned is that of a theological doctorate with a thesis relating to creationism
Over the years Craig Wright has been mentioned in relationship to various marginal activities. Craig helped create a casino in 1999
. In 2004 he was convicted of contempt of court and sentenced to 28 days in jail
. Craig maintained his innocence, but the charges were held up on two separate appeals.
In recent years Craig has been mentioned in relation to a questionable deal in which his company claimed $54 million in tax rebates from the Australian government
that were earmarked to reward tech industry investment in Australia. The circumstances around that substantial rebate have been called into question, by the Australian authorities and others. There remains a distinct lack of information as to whether the rebates were warranted.
Craig Wright claimed that his claimed government monies were to be used in relation to a Bitcoin related supercomputer project his company Cloudcroft
was creating, in partnership with the well known computing firm SGI. His company circulated a signed letter on SGI letterhead declaring the partnership. But when asked to confirm the partnership directly, the SGI Chief Operating Officer denied any involvement
with the project. He went further, stating that SGI had never even had any contact with Cloudcroft. No proof of the Cloudcroft supercomputer's existence was ever published.
In December of 2015, Craig Wright's house was raided
by the Sydney police in a tax investigation relating to tax rebates. Part of the claims of this tax rebate related to Bitcoin: it was claimed by Craig that he had a large amount of Bitcoin in the makeup of his investments, but no proof of these assertions was ever made available.
Craig was in fact listed as a MTGox customer on leaked customer reports published in 2014
, but only purchasing Bitcoin and after a large media blitz where buying Bitcoin was becoming increasingly well-known. By the leak's numbers Craig spent about five thousand dollars to acquire fifty coins, losing fifteen to the MTGox collapse. This raised a question, why would someone holding over a million bitcoins worth hundreds of millions of dollars spend thousands of dollars over a long stretch of time to buy fifty more?
In December of 2015, around the same time as the heated tax investigation into the veracity of Craig's Bitcoin investment and holding claims, unsourced rumors started to suggest that Craig is Satoshi. If he were Satoshi, it would have given great credence to his tax related claims of large Bitcoin related holdings and investment. Some of these rumors find their way into public stories published by news outlets, but no credible evidence is found, and some evidence that is produced seems to have been fabricated
to mislead people into misinterpretation.
It was revealed by Andrew O'Hagan in the London Review of Books that Craig had been working
with some business associates on the assumption of his secret Satoshi identity. Craig privately claimed, but never showed proof, to many people that he was Satoshi, and had arranged a high stakes business relationship to create a large series of Bitcoin related patents in a very large multimillion dollar deal. As an advance on the anticipated profits, Craig was offered large sums of money, which he spent lavishly on ostentatious cars and clothing, to the chagrin of his business partners.
After 2015, the story died down due to the disproven evidence and dead-end leads. Craig and his partners, with a professional PR company, began to contact news outlets about publishing new evidence to his Satoshi identity, promising them a valuable story on very specific terms. Craig demanded that all involved sign non disclosure agreements
and then go to meet him in a rented conference room
to validate his claim. He demanded that only a computer produced by his assistant
is used to cryptographically sign his proof, a computer that the verifiers are not allowed to keep for an inspection. Craig further demanded that he be allowed to add a modifier of his initials to a signing statement. The signing tool used was the Electrum Bitcoin wallet, but Electrum developers reported
no UK IP downloaded the verifying software signature file that would confirm the software's legitimacy.
The entire setup of these in person proof sessions was created in a suspect way, leading experts to believe that an in-person proof could easily have been stage managed
and faked. The reason stated for the careful controls was to avoid early release of the proof, however this could have been done in a remote way using a method of cryptography where Gavin could have been able to receive a personal proof of a signature that he would still be unable to use to publicly prove to the world was real. It's possible that Gavin was unaware of this cryptographic method, but then the lack of knowledge would imply that Craig and everyone involved in the proving sessions were not very qualified in cryptography related subjects. Gavin has previously stated
that he is not a cryptography expert.
As part of his proof, Craig also reintroduced some of the fabricated evidence that surfaced during the December rumors. To counter the critics who pointed out the uselessness of the evidence, he produced and quoted verbatim a supposedly third party report
substantiating the evidence and personally and separately attacking the people, mainly Greg Maxwell, who called into question the veracity of the evidence. The report in question was sourced from a paid technical evidence consulting agency located in the same city as Craig. This agency, with no known connection or published history with Bitcoin, addressed the unrelated Bitcoin Core project quite specifically and negatively, with views consistent with Craig's previously stated views. The writing style of the report, Craig's ability to repeat it verbatim, and the geological proximity and nature of the firm publishing the report suggested his close involvement with its creation. Although he printed and passed around the report to reporters, Craig did not disclose any relationship with the formation of the report.
In May of 2016 Craig Wright lifted the embargo on the story and declared himself to be Satoshi, with a lengthy blog post about how he could cryptographically sign a statement to prove he is Satoshi. At the top of his post he added a statement to sign stating that he is Satoshi, encoded in an unreadable machine format, as would be fed into the signing process he then went on to describe. At the end of the post describing how to derive a cryptographic signature from a statement, he quoted a cryptographic signature which could be run through the described signature verification to show that it is Satoshi's signature. However the signature at the end of the post did not sign the statement at the beginning of the post. Instead it was a well known and completely unrelated old signature from Satoshi. This fact left unstated by Craig was soon discovered by fact-checkers who referenced the signature against Satoshi's previously known signatures.
Given the missing evidence and suspicious circumstances and history, his claim was widely called a scam
, although Jon Matonis
and Gavin Andresen
maintained their positions, despite the evidence of malfeasance. Gavin did express surprise at the lack of public evidence, implying that he was previously led to believe that the evidence would be public and inspectable beyond the confines of the fixed private demonstration. Even so, when pressed Gavin demurred from backing off his claim. Gavin also does not mention any separate evidence that he said earlier he would demand, such as private correspondence that only he and Satoshi would have been privy to.
One point of skepticism mentioned by evaluators of Craig Wright's published works is that there are no commonalities found between his writing style and that of Satoshi Nakamoto's published works. Even trivial style choices like choosing double spaces after every period, a signature of Satoshi's, was absent from Craig Wright's writings. Suspiciously, after this point was widely mentioned, Craig Wright started going out of his way to add multiple spaces after his periods in his HTML blog posts. HTML by default does not visually display redundant white-space, but Craig added special default override code
to force its display.
After the ensuing the adverse reactions to his claim, Craig Wright contacted the press and put out statements to the effect that he would produce compelling public evidence
, as previously was tacitly promised. He claimed to have evidence that would put to rest any remaining doubt with an extraordinary new proof. He asks Gavin and BBC reporters to send funds to Satoshi's known addresses, so that he can send it back. However as the time ticks down on his promise, he backs out
, with a nonsensical and wandering statement about being worried to provide actual proof.
Gavin and the BBC's money was never returned to them.
There are random generated Bitcoin private keys, converted into WIF format and hashed to addresses. After getting Bitcoin address we check the quantity of transactions (Tx) and get its balance. If you see any address with transactions, we will store this address into leak database and will try to notify the owner. An advanced, custom PHP code checker that searches your code for common, hard to find typos and mistakes; includes a syntax check. Toggle navigation PHP Code Checker. Release Notes; v2.82; About; API; PHP Book; Enter Your Code. We'll perform a syntax check (lint) and a custom check for common errors. PHP Code. PHP 7.3 PHP 5.6. Analyze Clear. PHP Code Checker. This free service performs a line ... Bitcoin Checker. Bitcoin Checker is a FREE app to track the most recent prices of your favourite currency pairs (on over 80 supported exchanges) in many customizable ways (such as rich notifications, TTS voice announcements, Home and Lockscreen widget or multiple alarms).. As you know, the number of virtual currencies is increasing very fast. Currency pairs set on existing exchanges change ... We will give you specifically the following, bitcoin private key finder online tools, These tools will help you to recover lost bitcoin funds from personal/random and dormant wallet addresses and us advise that you do not use our tools the wrong way. Bitcoin private key finder 2020 is the latest version of the available tools and what this tool does differently is that is faster more reliable ... Bitcoin Checker is a FREE app to track the most recent prices of your favourite currency pairs (on over 80 supported exchanges) in many customizable ways (such as rich notifications, TTS voice announcements, Home and Lockscreen widget or multiple alarms). DataModule: Library project that stores ...
Mining Bitcoin is as easy as installing the mining software on the PC you already own and clicking start. Anyone can do this and see the money start rolling ... This ERP project built with PHP, jquery, Ajax, MySQL, etc. In this video, we are showing our ERP system. Please don't forget to subscribe and hit the link bu... If you want to someone to send you money to your Bitcoin account, Give them this address. you may donate to our network via Bitcoin as well :) Bitcoin addres... Access our website and know the code available and our mission with virtual coins. Where are the Codes? In our Virtual Store How do I receive it? After 2 con... Coding a QR code reading program using a library. A very easy to code quick way to get QR code scanned. QR Code Library Link https://github.com/khanamiryan/p...