Bitcoin Forum
December 06, 2023, 12:57:21 AM *
News: Mixers will no longer be allowed after Jan 1
  Home Help Search Login Register More  
  Show Posts
Pages: [1]
1  Bitcoin / Project Development / Inscription project - 1 pixel jpg inscription (1 x 1 pixel) on: February 16, 2023, 11:43:12 PM
Started a new project ... if you are inscribing on the Bitcoin blockchain and want to take part:

1 pixel jpg (1 x 1 pixel), just different colors

1st inscription of the project:
Inscription 123586 - id 411ab2fbc1f4167ae77bd215fedb1a056901b42a8f0750942dc3725583387d5di0
color: black

2nd inscription of the project:
Inscription 123588 - id 7b0b88aa4f568b7f2b3bf1960cfcdbd5f6cd5e4b660d7eba4944d3e2cca1cc2ci0
color: white


#         color                    id

1         black                    411ab2fbc1f4167ae77bd215fedb1a056901b42a8f0750942dc3725583387d5di0
2         white                    7b0b88aa4f568b7f2b3bf1960cfcdbd5f6cd5e4b660d7eba4944d3e2cca1cc2ci0
3         red                      8ebab9420034bf9f039232aed66fa09a7280eae49a81c592455b309609ba49a8i0
4         green                    e157c40a0d2121e0a0740949403d864bfdff213ade81a2fb17cadc6a348f194ei0
5         blue                     6690c10f77668f5fa95d70780c27d7a86e93d166e7f3ebfb166f1cc73460daf8i0

post your "1 pixel jpg inscription" and the color below  Smiley
2  Economy / Collectibles / Bitcoin Punks - Marketplace on: February 12, 2023, 12:39:27 AM
Bitcoin Punks - Marketplace

You can list here your Bitcoin Punk if you want to sell/exchange it or post if you want to buy one.

Bitcoin Punks homepage:


This thread is self-moderated to be able to delete completed listings. Good luck!

Support this thread: 3BmkDAahdu2p43ifrEPoZn32hFgET7TDpC
3  Local / Deutsch (German) / In Mittweida kann man jetzt Snacks mit Bitcoin bezahlen on: January 16, 2023, 11:28:47 PM
In Mittweida kann man jetzt Snacks mit Bitcoin bezahlen

"Matthias Hahn (62) ist sichtlich begeistert: "Das ist absolut krass", sagt er. Am Montagmittag war er der erste, der aus dem Snackautomaten in der Werkbank in Mittweida einen Schokoriegel zog. An diesem bezahlt man mit der Kryptowährung Bitcoin. Was kompliziert klingt, funktioniert im Mittweidaer Coworking-Space Werkbank32 ganz einfach.
Das kann man am Montagnachmittag beim Tag der offenen Tür in dem Haus an der Bahnhofstraße 32 erleben. Dort erklärt Tim Käbisch (25), wie das Gerät funktioniert. Der 25-Jährige hatte zuletzt das Projekt "Bitcoin-Snackautomat" am Blockchain Competence Center der Hochschule geleitet. Wer will, kann den Automaten auch gleich selbst testen."

Der Automat steht hier:
Bahnhofstraße 32
09648 Mittweida
(etwa 20 km nördlich von Chemnitz)

Gibt es mehr davon im Lande?  Smiley

Bitte unten posten.
4  Bitcoin / Project Development / nostr - Meet the Bitcoiners on the new "decentralized twitter" on: December 21, 2022, 06:12:14 PM
Meet the Bitcoiners on the new "decentralized twitter" - nostr

nostr stands for “Notes and Other Stuff Transmitted by Relays” and is an open protocol for censorship-resistant global networks.
nostr is a decentralized network based on cryptographic keypairs and that is not peer-to-peer, it is super simple and scalable and therefore has a chance of working. (some nostr projects)

As it is decentralized, it is an interesting social network among Bitcoiners and some are already testing their skills there:

@jack  82341f882b6eabcd2ba7f1ef90aad961cf074af15b9ef44a09f9d2a8fbfbe6a2
@LOPP  f728d9e6e7048358e70930f5ca64b097770d989ccd86854fe618eda9c8a38106
@ODELL  04c915daefee38317fa734444acee390a8269fe5810b2241e5e6dd343dfbecc9
@jack mallers  c4eabae1be3cf657bc1855ee05e69de9f059cb7a059227168b80b89761cbc4e0
@saylor (MicroStrategy)  a341f45ff9758f570a21b000c17d4e53a3a497c8397f26c0e6d61e5acffc7a98
and others (after you join one, you can see all followers of them and find others)

If you join, don't expect too much. It is like Bitcoin 0.1 ...  Smiley

Some tips & tricks for nostr newcomers: Wink Trying to keep this up to date.
5  Bitcoin / Project Development / old Bitcoin addresses as 'NFT' on the Bitcoin blockchain - 'signature chain' on: December 03, 2022, 12:31:55 PM

'signature chain' - a new type of 'NFT' on the Bitcoin blockchain

The items include the private key of the Bitcoin address for the given 'signature chain' as unlockable content that can only be unlocked and revealed by the new owner of this item.

Don't use these addresses for your private/own transactions. These are just for 'signature chain' transactions. You don't need to transfer the 'signature chain' immediately after purchase. You should understand how it works before transferring it. But if you believe in that project, you can get it now.

Rarity: 'signature chains' that start with early used addresses but also early created 'siganture chains' in that project. We are very early (13/Feb/2023).

How this started:

Recently there was a post with signatures, that used a key of a very old (January 2009) Bitcoin address.

This is the oldest signature  Smiley  (please post if you have a signature with an older address)


signature chain  Smiley


The discussion was "is it Satoshi or not, who is it" and so on.

Then the user yhiaali3 mentioned that it could be used to create an NFT.

Someone may want to convert old BTC addresses into NFT and sell them for large amounts later, this idea may achieve great profits after 10 years have passed, as these old addresses become of archaeological value as they are old Bitcoin addresses.
In this case, it does not matter whether you own the private key or not, because this address will not be used to send or receive bitcoins, but only as an NFT.

And we want to test a new type of 'NFT' here with that project:

--- old Bitcoin addresses as 'NFT' on the Bitcoin blockchain - a signature chain ---
6  Bitcoin / Bitcoin Discussion / Who has/had the oldest mined Bitcoin? on: November 15, 2022, 07:17:37 PM
I want to know if people from the early days of Bitcoin who mined are still here. If you want, you can post here a signature for the text "bitcointalk" with your oldest key so we can check who has/had the oldest mined Bitcoin. Even when the coins were sent (empty address), you can post the signature for that address.
7  Bitcoin / Bitcoin Discussion / Could Bitcoin have launched in the 1990s — Or was it waiting for Satoshi? on: November 08, 2022, 10:52:25 PM
Could Bitcoin have launched in the 1990s — Or was it waiting for Satoshi?

This year, Oct. 31 marked the 14th anniversary of the issuance of one of this century’s most consequential white papers — Satoshi Nakamoto’s “Bitcoin: A Peer-to-Peer Electronic Cash System.” Its 2008 publication set off a “revolution in finance” and “heralded a new era for money, one that did not derive its value from governmental edict but rather from technological proficiency and ingenuity,” as NYDIG celebrated in its Nov. 4 newsletter.

Many aren’t aware, though, that Satoshi’s nine-page white paper was met with some skepticism initially, even among the cypherpunk community where it first surfaced. This reluctance may be understandable since earlier attempts to create a cryptocurrency failed — David Chaum’s Digicash effort in the 1990s, for example — nor at first glance did it appear that Satoshi was bringing anything new to the table in terms of technology.

“It was technically possible to develop Bitcoin in 1994,” Jan Lansky, head of the department of computer science and mathematics at the Czech Republic’s University of Finance and Administration, told Cointelegraph, explaining that Bitcoin is based on three technical improvements that were available at that time: Merkle trees (1979), blockchain data structure (Haber and Stornetta, 1991) and proof of work (1993).

Peter Vessenes, co-founder and chief cryptographer at Lamina1 — a layer-1 blockchain — basically agreed: “We definitely could have been mining Bitcoin” in the early 1990s, at least from a technical perspective, he told Cointelegraph. The necessary cryptography was in hand:

“Bitcoin’s elliptic curve technology is mid-1980s technology. Bitcoin doesn’t need any in-band encryption like SSL; the data is unencrypted and easy to transfer.”
Satoshi sometimes gets credit for establishing the proof-of-work (PoW) protocol used by Bitcoin and other blockchain networks (though no longer Ethereum ) to secure digital ledgers, but here too, he had antecedents. “Cynthia Dwork and Moni Naor suggested the idea of proof of work to combat spam in 1992,” added Vessenes.

PoW, which is also effective in thwarting Sybil attacks, establishes a high economic price for making any changes to the digital ledger. As explained in a 2017 paper on Bitcoin’s origins by Arvind Narayanan and Jeremy Clark, “In Dwork and Naor's design, email recipients would process only those emails that were accompanied by proof that the sender had performed a moderate amount of computational work — hence, ‘proof of work.’” As the researchers further noted:

“Computing the proof would take perhaps a few seconds on a regular computer. Thus, it would pose no difficulty for regular users, but a spammer wishing to send a million emails would require several weeks, using equivalent hardware.”

Elsewhere, “Ralph Merkle invented Merkle trees in the late 1980s — so we had hashing functions that were secure for the times,” Vessenes added.

So, why then did Satoshi succeed while others foundered? Was the world simply not ready for a decentralized digital currency earlier? Were there still technical limitations, like accessible computer power? Or maybe Bitcoin’s true constituency hadn’t yet come of age — a new generation distrustful of centralized authority, especially in light of the Great Recession of 2008?

Establishing ‘trustless’ systems

David Chaum has been called “perhaps the most influential person in the cryptocurrency space.” His 1982 doctoral dissertation, Computer Systems Established, Maintained, and Trusted by Mutually Suspicious Groups, anticipated many of the elements that were to eventually find their way into the Bitcoin network. It also presented the key challenge to be solved, that is:

“The problem of establishing and maintaining computer systems that can be trusted by those who don't necessarily trust one another.”
Indeed, an academic exploration of blockchain technologies’s origins by four University of Maryland researchers lauded “the 1979 work of David Chaum, whose vault system embodies many of the elements of blockchains.”

In an interview with Cointelegraph last week, Chaum was asked if Bitcoin really could have been launched 15 years earlier, as some contend. He agreed with the U. of Maryland researchers that all the key blockchain elements were already present in his 1982 dissertation — with one key exception: Satoshi’s consensus mechanism:

 “The specifics of the [i.e., Satoshi’s] consensus algorithm is unlike, as far as I know, those in the literature on consensus algorithms.”
When pressed for specifics, Chaum was reluctant to say much more other than that the 2008 white paper described a “somewhat ad hoc… crude mechanism” that actually “could be made to work — more or less.”

In a recently published book, University of Oxford social scientist Vili Lehdonvirta also focuses on the uniqueness of that consensus mechanism. Satoshi rotated the cryptocurrency’s record-keepers/validators — better known today as “miners” — roughly every 10 minutes.

Then “the next randomly appointed administrator would take over, double check the previous block of records, and append their own block to it, forming a chain of blocks,” Lehdonvirta writes in Cloud Empires.

The reason for rotating miners, in Lehdonvirta’s telling, was to prevent the system’s administrators from becoming too entrenched and, thus, to avoid the corruption that inevitably comes with a concentration of power.

Even though PoW protocols were well known at this point, the specifics of Satoshi’s algorithm “really came out of nowhere… it wasn’t anticipated,” Chaum told Cointelegraph.

‘Three fundamental breakthroughs’

Vinay Gupta, founder and CEO of startup Mattereum, who also helped to launch Ethereum in 2015 as its release coordinator, agreed that most of Bitcoin’s key components were available for the taking when Satoshi came along, though he differs on some of the chronology. “The parts themselves were simply not ready until at least 2001,” he told Cointelegraph.

“Bitcoin is a combination of three fundamental breakthroughs on top of public key cryptography — Merkle trees, proof-of-work and distributed hash tables,” all developed before Satoshi, said Gupta. There were no problems with network hardware and computer power in the 1990s either. “It’s the core algorithms that were the slow part […]. We just didn’t have all the core building blocks for Bitcoin until 2001. The cryptography was first, and the extremely clever networking layer was last.”

Garrick Hileman, a visiting fellow at the London School of Economics, also cited a later date for Bitcoin’s technical feasibility:

“I’m not sure the early 1990s is a strong claim as some of the prior work referenced in Satoshi’s white paper — e.g. Adam Back’s hashcash/proof of work algorithm — were developed and/or published in the late 1990s or thereafter.”

Awaiting a favorable social climate

What about non-technical factors? Maybe Bitcoin was waiting for a demographic cohort that had grown up with computers/cell phones and distrusted banks and centralized finance generally? Did BTC require a new social-economic consciousness to flourish?

Alex Tapscott, a member of the Millennial generation, writes in his book Financial Services Revolution:

“For many of my generation, 2008 began a lost decade of structural unemployment, sluggish growth, political instability and a corrosion of trust and confidence in many of our institutions. The financial crisis exposed the avarice, malfeasance and plain incompetence that had driven the economy to the brink of collapse and had some asking, ‘How deep did the rot go?’”
In a 2020 interview with Cointelegraph, Tapscott was asked if Bitcoin could have happened without the financial upheaval of 2008. Given the “historically high unemployment rates in countries like Spain, Greece and Italy, there’s not much question that the ensuing lack of trust in institutions led many to view decentralized systems like blockchain more favorably,” he answered.

Lansky seemed to agree. There was no social need or demand for a decentralized payments solution in the 1990s “because we did not have enough experience with the fact that centralized solutions do not work,” he told Cointelegraph.

“Bitcoin was undeniably a cultural product of its times,” added Vessenes. “We wouldn’t have a decentralized push without this DNA of mistrust of central government technology controls.”

Pulling it all together

Overall, one can go back and forth arguing about who contributed what and when. Most agree, though, that most of the pieces were in place by 2008, and Satoshi’s real gift may have been how he was able to pull it all together — in just nine pages. “No single part of Bitcoin’s fundamental mechanics is new,” Gupta reiterated. “The genius is in the combination of these existing three components — Merkle trees, hash cash and distributed hash tables for the networking into a fundamentally new whole.”

But sometimes, the historical environment has to be propitious too. Chaum’s project failed “because there was not enough interest in this service” at the time, among other reasons, according to Lansky. Satoshi Nakamoto, by comparison, had perfect timing. “He came up with Bitcoin in 2008, when the classical financial system was failing,” and the founder’s vanishing from the scene in 2010 “only strengthened Bitcoin, because the development was taken over by its community.”

It should be remembered, too, that technological progress is almost always a collaborative effort. While Satoshi’s system seems “radically different from most other payment systems today,” Narayanan and Clark wrote, “these ideas are quite old, dating back to David Chaum, the father of digital cash.”

Satoshi clearly had forerunners — Chaum, Merkle, Dwork, Naor, Haber, Stornetta and Back, among others. Said Gupta: “Credit where credit is due: Satoshi stood on the shoulders of giants.”


Maybe some of you asked that question too ... therefore I posted it  Smiley
8  Bitcoin / Bitcoin Discussion / US Senator Says 'I Love That Bitcoin Can't Be Stopped' on: October 04, 2022, 09:32:21 AM
US Senator Says 'I Love That Bitcoin Can't Be Stopped'

U.S. Senator Cynthia Lummis says she loves that bitcoin cannot be stopped and that governments cannot just confiscate the cryptocurrency. “It’s actually comforting to know that bitcoin is there,” she said ...

... she said the truth  Smiley
9  Alternate cryptocurrencies / Altcoin Discussion / SEC Charges 2 Firms and 4 Individuals in Crypto Pump-and-Dump Scheme on: October 02, 2022, 06:43:22 PM
SEC Charges 2 Firms and 4 Individuals in Crypto Pump-and-Dump Scheme

They falsely claimed that “the company intended to back each DIG token issued and sold to investors with $1.00 worth of this gold, and that independent accounting firms had performed an ‘audit’ of the gold and verified its existence.”

This allowed them to sell at least $36.8 million of the crypto token, including to U.S. investors, “at prices fraudulently inflated by the public misstatements about the supposed gold acquisition,” the SEC detailed.
10  Bitcoin / Bitcoin Technical Support / 'rounds' or 'iterations' of wallet.dat on: September 22, 2022, 09:46:21 AM
I checked wallet.dat files' hashes and some have the same 'rounds' or 'iteration':

How will the number of rounds (iteration) for the wallet.dat hash be generated?

I am asking, because lots of different wallet.dat hashes have the same rounds (iteration):


EDIT: I found this:
.. a dynamic number of rounds determined by the speed of the machine which does the initial encryption (and is updated based on the speed of a computer which does a subsequent passphrase change)


Still not knowing why so much wallet.dat files that are being sold have the same 'rounds'.

Does someone know, if all numbers (example: 10000, 10001, 10002, ..) can become 'rounds' or is there an algo in the core file that allows only certain numbers? exampe: 10000, 10100,  10200, ..
11  Bitcoin / Bitcoin Discussion / Is it possible to create a fake wallet.dat file? on: September 18, 2022, 05:41:53 PM
There is a huge market for wallet.dat files on the web, where people don't know / forgot the password. I wanted to know if they are fake and checked them, asked the sellers what they know about their files. Most didn't know anything, but they bought it, let's say for 0.01 BTC with a 50 BTC balance and are trying to find the password. After a while sell it to someone else and so on.

My question:

Is it possible to create an encrypted wallet.dat file, that shows a balance and the corresponding address (you don't have the private key) after a rescan with Bitcoin Core, but that is fake?


The answer is: YES

Found the thread: (was created back in 2019)

Fake walle.dat can trick bitcoin core client?

The wallet file isn't fake per se, nor are the transactions it shows. What's fake about it is that it doesn't contain the private keys it claims it does.

The method of identification is to look at the corresponding version of the wallet code, check the data consistency, time, field, type, structure, It looks very complicated.
It actually is not that complicated. You don't need to check any data consistency, time, etc. You don't need to check any of the things you mentioned. You also don't really need to look at the wallet code because the data that they are manipulating doesn't change frequently, if ever. In fact, the specific database fields that are being modified will likely never change in order to maintain backwards compatibility with older wallet versions.

What the authors have done here is simply add fields which represent encrypted keys. These fields contain the pubkey and the encrypted private key which will typically just look like random data (because that's the point of encryption). What the authors have done is just create a field that contains the pubkey and random data (or in this case, a string) as the private key.

It is impossible for anyone (technical or not, professional or not) to identify that the wallet is "fake" by simply looking at it (besides the fact that common sense tells you its a scam). If done correctly, the supposed encrypted key will be garbage data and its veracity cannot be determined without knowing the decryption key. Of course, if it's just zeroes or some other obvious non-random data, then it can be easily determined. You can inspect the data of a wallet.dat file using BDB 4.6's db_dump tool.

Yes, it's possible. In fact, there are many people who fell for such scam tactics.

But what they actually they do are modifying unencrypted part of the wallet.dat to show address which doesn't have it's private key pair.

recently someone is selling fake bitcoin wallet.dat file containing 3050 BTC (
that wallet is my friend wallet and he immediately moved all bitcoin to different address.

scammer send small amount of btc in all such cold wallet and check if wallet is active or not,
 if wallet is inactive then they create fake wallet.dat file and fool other

example wallet.dat:
12  Bitcoin / Bitcoin Discussion / Bitcoin wastes electricity? - No - Heat your home with mining on: September 05, 2022, 10:52:38 AM
Just read this:

By lately some people have been claiming that "Bitcoin's power consumption is a central point of failure - someone can just switch off the electricity and all miners stop". And in particular "Bitcoin will not survive the coming winter". Both of these are wrong.

NotATether is right, look here:

Heating My Home with Crypto Mining
It may be the greenest kind of heat around

Is crypto mining the next home heating trend?


Repurposing Bitcoin mining heat can solve global energy crisis: Arcane

While innovations in chipset manufacturing have helped reduce operational costs related to Bitcoin mining, a report from Arcane reveals the market’s potential to transform the energy industry.  Shocked

13  Bitcoin / Bitcoin Discussion / What will be the Bitcoin price if "self-reporting of every wallet address" on: September 04, 2022, 10:52:13 AM
I just read this in another thread:

I just don't think the US government will allow it to go on forever though. Not for US citizens anyway.
I agree, and the mandatory question right at the top of Form 1040 is just the beginning. No doubt the government will want full self-reporting of every wallet address you control in the future. But the fact remains - if you fail to comply with fiat regulations, then the government can take your fiat out your bank accounts with ease. If you fail to comply with bitcoin regulations, the government can't take anything unless you hand it over to them.

If that happens, what will the price make? Because before that comes, I would sell all my early mined Bitcoin (2010 - 2011). Then Bitcoin wouldn't be Bitcoin as I knew it anymore.
14  Bitcoin / Bitcoin Discussion / 5,000 BTC from Satoshi-Era Wallet Moved on: August 30, 2022, 10:39:38 AM
5000 BTC from Satoshi-Era Wallet Moved, maybe 3 More Wallets Wait to Send Bitcoin as they have the same origin ~21000 BTC.

A bitcoin address that had been dormant for nearly nine years transferred the entire balance of 5,001.51 BTCs to a new wallet on August 28, with a floating profit of more than $96 million.


address: 15n6boxiQj45oHcmDjtNMjh35sFWZX4PBt

What for accounts are these? One might think lost wallet, but the owner proved that it's not.

Also 5,000 BTC isn't that much compared to what some exchanges or funds have..

Another transaction with 5,000 dormant Bitcoin  from 7y ~ 10y age band

This origin (~21000 BTC) is moving all their coins.

One funny detail:

transaction 0219d5bd944889a670687ffdf75e2d265b6066a355118eedd860a6aeb6f2eb32
1 input ~5000 BTC
171 outputs, several outputs with exactly 47.98469209 BTC


Has someone an explanation for these several 47.98469209 BTC? Check the transaction:
Pages: [1]
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!