CryptoCoinsInfoClub.com

Where Is The Bitcoin Blockchain Stored On My Computer

How To Delete The Bitcoin Blockchain From Your Computer? : Bitcoin

How To Delete The Bitcoin Blockchain From Your Computer? : Bitcoin

Do not use URL shortening services: always submit the real link. Begging/asking for bitcoins is absolutely not allowed, no matter how badly you need the bitcoins. Only requests for donations to large, recognized charities are allowed, and only if there is good reason to believe that the person accepting bitcoins on behalf of the charity is trustworthy. News articles that do not contain the word "Bitcoin" are usually off-topic. This subreddit is not about general financial news. Submissions that are mostly about some other cryptocurrency belong elsewhere. For example, /r/CryptoCurrency is a good place to discuss all cryptocurrencies. Promotion of client software which attempts to alter the Bitcoin protocol without overwhelming consensus is not permitted. Trades should usually not be advertised here. For example, submissions like "Buying 100 BTC" or "Selling my computer for bitcoins" do not belong here. /r/Bitcoin is primarily for news and discussion. Please avoid repetition /r/bitcoin is a subreddit devoted to new information and discussion about Bitcoin and its ecosystem. New merchants are welcome to announce their services for Bitcoin, but after those have been announced they are no longer news and should not be re-posted. Aside from new merchant announcements, those interested in advertising to our audience should consider Reddit's self-serve advertising system . Do not post your Bitcoin address unless someone explicitly asks you to. Be aware that Twitter, etc. is full of impersonation. Continue reading >>

Where Is The Blockchain Stored?

Where Is The Blockchain Stored?

You are at: Home Questions Where is the blockchain stored? I keep hearing that the blockchain holds all of the Bitcoin transactions from the beginning of time. Where exactly is this file stored? The blockchain is indeed a file that holds every Bitcoin transaction. Its stored on many computers of Bitcoin users around the world, also known as Bitcoin nodes . Thats what makes Bitcoin decentralized theres a copy of the whole system on thousands of computers. So no scammercan get one copy and rewrite it. In order to create such an attack you will need to rewrite thousand of copies. If youre using the Bitcoin core wallet then you too hold a copy of the blockchain on your computer. Continue reading >>

Six Main Disadvantages Of Bitcoin And The Blockchain Kaspersky Lab Official Blog

Six Main Disadvantages Of Bitcoin And The Blockchain Kaspersky Lab Official Blog

Blockchain: so cool, what a breakthrough soon almost everything will be based on blockchain technology. If you bought all of that, then I might just disappoint you. This article will discuss the version of blockchain technology that is used for Bitcoin cryptocurrency. There are other implementations, and they may have eliminated some of the disadvantages of the classic blockchain, but usually everything is built around the same principles. Load image I consider the Bitcoin technology itself revolutionary. Unfortunately, Bitcoin has been used for criminal activities far too often, and as an information security specialist, I strongly dislike that practice. Yet, technologically speaking, Bitcoin is an obvious breakthrough. The Bitcoin protocol components and built-in ideas arent new; generally, they were all known before 2009, but only the authors of Bitcoin managed to piece them together to make it work back in 2009. Since then, for almost nine years, only one critical vulnerability has been found in its implementation, when one malefactor snagged 92 billion bitcoins. Fixing that required rolling back the entire financial record by 24 hours. Nevertheless, just one vulnerability in nine years is praiseworthy. Hats off to the creators. The authors of Bitcoin faced the challenge of making it all work with no central system and no one trusting anyone else. The creators rose to the challenge and made electronic money an operational currency. Nevertheless, some of their decisions were devastating in their ineffectiveness. I am not here to discredit blockchain, a useful technology that has shown many remarkable uses. Despite its disadvantages, it has unique advantages as well. However, in the pursuit of the sensational and revolutionary, many people concentrate on the upsides Continue reading >>

(solved) Where Are Ethereum Blockchains Stored On My Windows Pc?

(solved) Where Are Ethereum Blockchains Stored On My Windows Pc?

edited August 2016 in Protocol and Client discussion I have run multiple ethereum programs, mist, ethereum wallet, geth.exe, and I can't seem to find where these applications are storing the blockchain data. I have a feeling that some of them have duplicate copies of the blockchain and taking up way too much space. Could it be the hardfork has caused some of my programs to use different chains? I really want to clear the mess and just stick with ETH. My wallet for example is running very sluggishly (I can't even get it to load the blockchain) and I'm having disk space issues. I would like to uninstall everything and start fresh but I don't want to lose my wallet address's and I don't know where they are either. I'm much more familiar with bitcoin storage structure but ethereum is a little different. Thanks for any help. I backed up my address's from the keystores file under the ethereum folder which, in Windows, is stored at C:\Users\YOU\AppData\Roaming\Ethereum . My hard drive layout is a smaller SSD for C drive and a larger HDD for main storage drive. The nifty thing I found is to put a link at that location to some other folder where the files actually go (such as on my HDD). I backed up my keys, deleted all ethereum files, created a link between the default location and the location on my HDD drive where I want the blockchain stored, and redownloading the new hard-forked chain. Continue reading >>

How Is A Hyperledger Fabric Blockchain Stored On A Pc?

How Is A Hyperledger Fabric Blockchain Stored On A Pc?

I'm trying to get my head around blockchain and I'm finding it difficult to get a straight forward answer to this. Say I create a web application that interacts with a blockchain. A user opens my web app, logs in and uses that web application and so a transaction occurs and a new block is added to the chain. How is that blockchain stored on their PC, since the point of blockchain is that it is stored on every participating node? In what format is it stored? Continue reading >>

Blockchain - Where Are The User's Bitcoins Actually Stored? - Bitcoin Stack Exchange

Blockchain - Where Are The User's Bitcoins Actually Stored? - Bitcoin Stack Exchange

Where are the user's bitcoins actually stored? Where does that information reside that tells others and me how much bitcoins I have? I assume it can't be on my PC because I could easily hack the file that contains that data and get myself more bitcoins, right? It seems like what's called for here is a basic explanation of two of Bitcoin's big concepts: the wallet and the blockchain: A "wallet" is a collection of ECDSA keypairs. For those not familiar with cryptography, a keypair consists of a "public key" and a "private key" which can be used to encrypt or sign bits of data. The public key, as the name suggests, is known to everyone and can be used to encrypt messages in such a way that the holder of the private key alone may decrypt them. The private key may also be used to sign messages in such a way that anyone holding the public key may verify that the message truly came from you. Every Bitcoin address consists of such a keypair - the "address" you send people is the public half and the private half resides in your wallet.dat file. The "blockchain" is a constantly growing database of transaction information which is sent out to all nodes in the Bitcoin network. When you perform a transaction, that transaction is distributed to the network and assuming the transaction is valid, will be included in the next "block." This is where the coins themselves are stored. When you initiate a transaction, all previous transactions to or from that address are scanned and a balance is calculated. If your transaction exceeds this available balance, it will be rejected by the network and will not be included in a block. It's also important to note that the blockchain technically doesn't store "coins" it stores transaction information. The coins themselves are not discrete things wh Continue reading >>

Data Directory - Bitcoin Wiki

Data Directory - Bitcoin Wiki

The data directory is the location where Bitcoin's data files are stored, including the wallet data file. Go to Start -> Run (or press WinKey+R) and run this: Bitcoin's data folder will open. For most users, this is the following locations: C:\Documents and Settings\YourUserName\Application data\Bitcoin (XP)C:\Users\YourUserName\Appdata\Roaming\Bitcoin (Vista and 7) "AppData" and "Application data" are hidden by default. You can also store Bitcoin data files in any other drive or folder. If you have already downloaded the data then you will have to move the data to the new folder.If you want to store them in D:\BitcoinData then click on "Properties" of a shortcut to bitcoin-qt.exe andadd -datadir=D:\BitcoinData at the end as an example: "C:\Program Files (x86)\Bitcoin\bitcoin-qt.exe" -datadir=d:\BitcoinData Start Bitcoin, now you will see all the files are created in the new data directory. By default Bitcoin will put its data here: You need to do a "ls -a" to see directories that start with a dot. If that's not it, you can do a search like this: find / -name wallet.dat -print 2>/dev/null By default Bitcoin will put its data here: Bitcoin's verbose log file. Automatically trimmed from time to time. Storage for keys, transactions, metadata, and options. Please be sure to make backups of this file. It contains the keys necessary for spending your bitcoins. Storage for ip addresses to make a reconnect easier Storage for peer information to make a reconnect easier. This file uses a bitcoin-specific file format, unrelated to any database system [1] . fee_estimates.dat [Versions v0.10.0 and later] Statistics used to estimate fees and priorities. Saved just before program shutdown, and read in at startup. The data, index and log files are used by Oracle Berkeley DB , the embe Continue reading >>

8 Answers - Where Is The Blockchain Ledger Of Bitcoin Transactions Stored And How Is It Being Backed Up? - Quora

8 Answers - Where Is The Blockchain Ledger Of Bitcoin Transactions Stored And How Is It Being Backed Up? - Quora

Where is the blockchain ledger of bitcoin transactions stored and how is it being backed up? The answer to this question is what basically makes blockchains so popular/revolutionary. The ledger i.e. blockchain is stored on every computer (node) that partakes in the network. As such there is no central hub that manages everything; it is a decentralized network that cannot be taken down at any specific point; it cannot be 'muted'. To partake in the network you could just download the Core ( Open source P2P money ) or a Bitcoin wallet. Thus the beauty of this system is that it is backed up by every single participant in the network. That is the point of blockchains, really; they record events and engrave them into digital, unerodable rock. Blockchain is stored on all the computers running Bitcoin node. There are thousands of computers running full node. Each of these node record every new transaction in the blockchain. All of these nodes run as backup for the blockchain. You can also run a Bitcoin node and backup it in your computer: Go to Start -> Run (or press WinKey+R) and run this: Bitcoin's data folder will open. For most users, this is the following locations: C:\Documents and Settings\YourUserName\Application data\Bitcoin (XP)C:\Users\YourUserName\Appdata\Roaming\Bitcoin (Vista and 7) "AppData" and "Application data" are hidden by default. You can also store Bitcoin data files in any other drive or folder. By default Bitcoin will put its data here: You need to do a "ls -a" to see directories that start with a dot. If that's not it, you can do a search like this: find / -name wallet.dat -print 2>/dev/null By default Bitcoin will put its data here: Content Director For Cryptosomniac (Cryptocurrencies) #1 Cryptocurrency FaceBook Group: Log into Facebook | Facebook Continue reading >>

Guide | The Blockchain

Guide | The Blockchain

The blockchain is a file that contains a list of every bitcoin transaction ever made. Everyone on the bitcoin network shares a copy of this file, and it updates regularly with the latest transactions. The Bitcoin Network: Everyone sharing a file of transactions (called the blockchain). The blockchain tells you how many bitcoins each person owns. This is because having a complete list of transactions allows you to work out how many bitcoins are located at each address. Therefore, you can figure out how many bitcoins each person has. The blockchain is like a logbook, or a ledger. Ledger a book in which the monetary transactions of a business are posted in the form of debits and credits. Because transactions arent added to the file individually. Instead, they are bunched together and added in blocks. Hence, blockchain. Also, these blocks are linked together, so any changes made to a block lower down the chain will change the blocks above it. So _linked_blocks, or blockchain. Transactions are added to in blocks, and these blocks are chained together. The block-ing of transactions makes it easier for everyone to share a copy of the blockchain. With the Internet connection speeds weve got, its much easier to share a file that updates once every 10 minutes, than one that updates multiple times a second. The _chain_ing of transactions is a security feature. It makes it difficult to tamper with the blockchain without anyone noticing. The blockchain is shared by the nodes on the bitcoin network , in the same way a totally legit and non-copyrighted video file might be shared on the BitTorrent network . Bitcoin peer-to-peer file sharing of the blockchain. If my file hasnt got the latest blocks of transactions, someone will share them with me. P2P file sharing is a topic of its own Continue reading >>

Blockchain - Wikipedia

Blockchain - Wikipedia

For other uses, see Block chain (disambiguation) . Blockchain formation. The main chain (black) consists of the longest series of blocks from the genesis block (green) to the current block. Orphan blocks (purple) exist outside of the main chain. A blockchain [1] [2] [3] originally block chain [4] [5] is a continuously growing list of records , called blocks, which are linked and secured using cryptography . [1] [6] Each block typically contains a hash pointer as a link to a previous block, [6] a timestamp and transaction data. [7] By design, blockchains are inherently resistant to modification of the data. Harvard Business Review defines it as "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way." [8] For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority. Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance . Decentralized consensus has therefore been achieved with a blockchain. [9] This makes blockchains potentially suitable for the recording of events, medical records, [10] [11] and other records management activities, such as identity management , [12] [13] [14] transaction processing , documenting provenance , or food traceability . [15] The first blockchain was conceptualised in 2008 by an anonymous person or group known as Satoshi Nakamoto and implemented in 2009 as a core component of bitcoin where it serves as the public ledger for all transactions. Continue reading >>

Client - Where Is The Data Folder For Bitcoin-qt? - Bitcoin Stack Exchange

Client - Where Is The Data Folder For Bitcoin-qt? - Bitcoin Stack Exchange

I see questions which answer this for particular operating systems, but would like an answer to be able to point to that works for any supported OS. Chris Moore Jun 20 '12 at 2:37 bitcoin.stackexchange.com/q/1350/659 has the OSX path. Chris Moore Jun 20 '12 at 2:54 This is not an exact duplicate, but asking about how to change the default storage location has been posted many, many times. The future canonical question is probably Bitcoin-Qt setup: Change block-chain file location, settings? documentation? . Peter Mortensen Aug 1 '14 at 12:37 To be fair I asked this almost a year before that other question was asked. Chris Moore Aug 1 '14 at 17:06 Also the question you linked to doesn't have any information that answers my question. There's no mention on the MacOS path, for instance. Chris Moore Aug 1 '14 at 17:10 Continue reading >>

Blockchain For Dummies! A Gentle Introduction.

Blockchain For Dummies! A Gentle Introduction.

Blockchain for Dummies! A gentle introduction. This article is one of several articles in which I explain in a very simple way what a blockchain is. What is the difference between Bitcoin and Blockchain? Blockchain is the technology behind bitcoin: bitcoin cannot exist without a blockchain. It is like Internet and Facebook: Facebook cannot exist without Internet. A Blockchain is a kind of database where you can save any type of data you want. While a normal database is located on a server, a blockchain is distributed among the software users. For example, the Facebooks database is located on a protected server and no one can access the information. The Bitcoins blockchain instead is located on servers and computers (called nodes) of all the Bitcoin users. All the transactions that occur between ewallets are stored on the bitcoins blockchain. All the servers and the computers that are using bitcoin have the same copy of the blockchain stored on their hard disk. There are many kinds of blockchain with different features, like Ethereum , Hyperledger , Ripple . Some of them are more suitable to handle currency, others are used to store files. You dont need to download all the blockchain to your computer in order to use Bitcoin (or any other blockchain technology) as the current size of Bitcoins blockchain is over 135 GB and it can easily drain the resources of your computer. To avoid this issue there are different types of e-wallets (we will talk about them later). If the bitcoins blockchain is on my computer, can I add 1 million of bitcoins in my ewallet? The blockchain is famous for its security: once the data is there it is impossible to modify it. The blockchain consists of a chain of blocks, where every block contains data (for instance a money transaction, a file or Continue reading >>

Where Is The Blockchain Stored?

Where Is The Blockchain Stored?

Following my previous article where I talked about what a blockchain is, taking the example of the Bitcoin blockchain, a natural question comes to mind: where is that blockchain (the big spreadsheet storing all the transactions ever made) stored? Well as you have probably heard, a blockchain is decentralized. Thus there cannot be a single place where the blockchain is stored (that would make it centralized). Blockchains are stored in a lot of peoples computers. These people are called nodes. They can be simple users or miners (more on that later) Ok, so each node has a copy of all transactions ever made. So what happens when a new transaction is written to the blockchain (added to the spreadsheet)? Well, all computers storing the blockchain have to update it! Alice sends 1 bitcoin to Bob. She creates a transaction and sends it to every computer that she knows are running the Blockchain (they are called nodes). Alices bitcoin wallet has a pre-filled list of other nodes so she does not have to worry about actually knowing other users. This process is transparent to her. Each node that receives the transaction now knows that Alice is sending 1 bitcoin to Bob. They all send the transaction to all the other nodes they know which will in turn do the same until the whole network knows about the transaction. Some of these nodes are miners and are tasked to verify the transaction. But that is for another time. The time it takes for the transaction to propagate to the whole network is around 15 seconds, which is pretty fast. This can be seen here (in transaction 90th percentile, which is the time it takes for a transaction to reach 90% of the nodes). This time can vary day-to-day. I like to think I suffer from attention disorder so not only I cant read long articles, but I cant Continue reading >>

How Do Bitcoin Transactions Work? - Coindesk

How Do Bitcoin Transactions Work? - Coindesk

Bitcoin transactions are sent from and to electronic bitcoin wallets , and are digitally signed for security. Everyone on the network knows about a transaction, and the history of a transaction can be traced back to the point where the bitcoins were produced. Holding onto bitcoins is great if you’re a speculator waiting for the price to go up, but the whole point of this currency is to spend it, right? So, when spending bitcoins, how do transactions work? There are no bitcoins, only records of bitcoin transactions Here’s the funny thing about bitcoins: they don’t exist anywhere, even on a hard drive. We talk about someone having bitcoins, but when you look at a particular bitcoin address, there are no digital bitcoins held in it, in the same way that you might hold pounds or dollars in a bank account. You cannot point to a physical object, or even a digital file, and say “this is a bitcoin”. Instead, there are only records of transactions between different addresses, with balances that increase and decrease. Every transaction that ever took place is stored in a vast public ledger called the block chain. If you want to work out the balance of any bitcoin address, the information isn’t held at that address; you must reconstruct it by looking at the blockchain. If Alice sends some bitcoins to Bob, that transaction will have three pieces of information: An input. This is a record of which bitcoin address was used to send the bitcoins to Alice in the first place (she received them from her friend, Eve). An amount. This is the amount of bitcoins that Alice is sending to Bob. An output. This is Bob's bitcoin address. To send bitcoins, you need two things: a bitcoin address and a private key. A bitcoin address is generated randomly, and is simply a sequence of lett Continue reading >>

Where Is The Blockchain Stored On My Computer?

Where Is The Blockchain Stored On My Computer?

Where is the Blockchain stored on my computer? I was wondering where the blockchain was stored on a normal windows computer. I believe it is in the temp folder as it isn't in the bitcoin-qt folders. I only question this as I would like to move all this data from two different drives to one drive set just for bitcoin. I have the blockchain on one drive, and the wallet itself on another drive. I'm just wondering because I am expecting a larger ledger in the next couple of years (maybe even months). Quote from: ezeminer on April 15, 2015, 04:49:48 PM I was wondering where the blockchain was stored on a normal windows computer. I believe it is in the temp folder as it isn't in the bitcoin-qt folders. I only question this as I would like to move all this data from two different drives to one drive set just for bitcoin. I have the blockchain on one drive, and the wallet itself on another drive. I'm just wondering because I am expecting a larger ledger in the next couple of years (maybe even months). Continue reading >>

More in bitcoin