Bitcoin Wallet - Bitcoin Wiki

Here's my suggested new Trezor setup checklist.

  1. Read the manual: https://wiki.trezor.io/
  2. Upgrade FW to the latest release
  3. Initialize it and write down your seed
  4. Create a 5 or 6 word passphrase using BIP39, or diceware
  5. Ensure your passphrase is less than 50 characters
  6. Enable PIN and passphrase on your device and write it down as well.
  7. (Optional) Create a guessable pin and enable it as your wipe PIN
  8. Enable Account Labeling as a safeguard to mistyped passphrases.
  9. Create a guessable second passphrase (with labeling) as your decoy wallet)
  10. Print your xpub) and keep it with your seed / pin / passphrase
  11. Do a dry-run recovery to ensure your wrote the seed down correctly.
  12. Perform a wipe-device to ensure that recovery brings the proper labeling / xpubs back.
  13. Set up Trezor Password Manager to hold your passwords.
  14. Add Trezor as your U2F device (security key) for your exchanges
  15. Create some SSH keys with your Trezor
  16. (Linux only) Create a GPG key with your Trezor
  17. Move 10% of your coins off of the exchange to your Trezor decoy wallet.
  18. Move the other 90% of your coins to the real (non-decoy) wallet
  19. If thieves ask for your pin and passphrase, give the wipe-pin or decoy-passphrase.
submitted by brianddk to TREZOR [link] [comments]

TKEYSPACE — blockchain in your mobile

TKEYSPACE — blockchain in your mobile

https://preview.redd.it/w8o3bcvjrtx41.png?width=1400&format=png&auto=webp&s=840ac3872156215b30e708920edbef4583190654
Someone says that the blockchain in the phone is marketing. This is possible for most applications, but not for Tkeycoin. Today we will talk about how the blockchain works in the TkeySpace app.
Who else is not in the topic, TkeySpace is a financial application for decentralized and efficient management of various cryptocurrencies, based on a distributed architecture without using a client-server.
In simple words, it is a blockchain in the user’s mobile device that excludes hacking and hacker attacks, and all data is encrypted using modern cryptographic methods.
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Blockchain

Let’s start with the most important thing — the blockchain works on the principles of P2P networks, when there is no central server and each device is both a server and a client, such an organization allows you to maintain the network performance with any number and any combination of available nodes.
For example, there are 12 machines in the network, and anyone can contact anyone. As a client (resource consumer), each of these machines can send requests for the provision of some resources to other machines within this network and receive them. As a server, each machine must process requests from other machines in the network, send what was requested, and perform some auxiliary and administrative functions.
With traditional client-server systems, we can get a completely disabled social network, messenger, or another service, given that we rely on a centralized infrastructure — we have a very specific number of points of failure. If the main data center is damaged due to an earthquake or any other event, access to information will be slowed down or completely disabled.
With a P2P solution, the failure of one network member does not affect the network operation in any way. P2P networks can easily switch to offline mode when the channel is broken — in which it will exist completely independently and without any interaction.
Instead of storing information in a single central point, as traditional recording methods do, multiple copies of the same data are stored in different locations and on different devices on the network, such as computers or mobile devices.

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This means that even if one storage point is damaged or lost, multiple copies remain secure in other locations. Similarly, if one part of the information is changed without the consent of the rightful owners, there are many other copies where the information is correct, which makes the false record invalid.
The information recorded in the blockchain can take any form, whether it is a transfer of money, ownership, transaction, someone’s identity, an agreement between two parties, or even how much electricity a light bulb used.
However, this requires confirmation from multiple devices, such as nodes in the network. Once an agreement, otherwise known as consensus, is reached between these devices to store something on the blockchain — it can’t be challenged, deleted, or changed.
The technology also allows you to perform a truly huge amount of computing in a relatively short time, which even on supercomputers would require, depending on the complexity of the task, many years or even centuries of work. This performance is achieved because a certain global task is divided into a large number of blocks, which are simultaneously performed by hundreds of thousands of devices participating in the project.

P2P messaging and syncing in TkeySpace

TkeySpace is a node of the TKEY network and other supported networks. when you launch the app, your mobile node connects to an extensive network of supported blockchains, syncs with full nodes to validate transactions and incoming information between nodes, so the nodes organize a graph of connections between them.
You can always check the node information in the TkeySpace app in the ⚙ Settings Contact and peer info App Status;

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TkeySpace creates initiating connections to servers registered in the blockchain Protocol as the main ones, from these servers it gets the addresses of nodes to which it can join, in turn, the nodes to which the connection occurred share information about other nodes.

https://i.redd.it/m21pw88srtx41.gif
TkeySpace sends network messages to nodes from supported blockchains in the app to get up-to-date data from the network.
The Protocol uses data structures for communication between nodes, such as block propagation over the network, so before network messages are read, nodes check the “magic number”, check the first bytes, and determine the type of data structure. In the blockchain, the “magic number” is the network ID used to filter messages and block traffic from other p2p networks.
Magic numbers are used in computer science, both for files and protocols. They identify the type of file/data structure. A program that receives such a file/data structure can check the magic number and immediately find out the intended type of this file/data structure.
The first message that your node sends is called a Version Message. In response, the node waits for a Verack message to establish a connection between other peers. The exchange of such messages is called a “handshake”.

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After the “handshake” is set, TkeySpace will start connecting to other nodes in the network to determine the last block at the end of the required blockchain. At this point — nodes request information about blocks they know using GetBlock messages — in response, your node receives an inv (Inventory Message) from another node with the information that it has the information that was requested by the TkeySpace node.
In response to the received message, inv — TkeySpace sends a GetData message containing a list of blocks starting immediately after the last known hash.

https://preview.redd.it/lare5lsurtx41.png?width=768&format=png&auto=webp&s=da8d27110f406f715292b439051ca221fab47f77

Loading and storing blocks

After exchanging messages, the block information is loaded and transactions are uploaded to your node. To avoid storing tons of information and optimize hard disk space and data processing speed, we use RDBMS — PostgreSQL in full nodes (local computer wallet).
In the TkeySpace mobile app, we use SQLite, and validation takes place by uploading block headers through the Merkle Tree, using the bloom filter — this allows you to optimize the storage of your mobile device as much as possible.
The block header includes its hash, the hash of the previous block, transaction hashes, and additional service information.
Block headers in the Tkeycoin network=84 bytes due to the extension of parameters to support nChains, which will soon be launched in “combat” mode. The titles of the Bitcoin block, Dash, Litecoin=80 bytes.

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And so, let’s continue — application nodes receive information from the blockchain by uploading block headers, all data is synchronized using the Merkle Tree, or rather your node receives and validates information from the Merkle root.
The hash tree was developed in 1979 by Ralph Merkle and named in his honor. The structure of the system has received this name also because it resembles a tree.
The Merkle tree is a complete binary tree with leaf vertexes containing hashes from data blocks, and inner vertexes containing hashes from adding values in child vertexes. The root node of the tree contains a hash from the entire data set, meaning the hash tree is a unidirectional hash function. The Merkle tree is used for the efficient storage of transactions in the cryptocurrency blockchain. It allows you to get a “fingerprint” of all transactions in the block, as well as effectively verify transactions.

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Hash trees have an advantage over hash chains or hash functions. When using hash trees, it is much less expensive to prove that a certain block of data belongs to a set. Since different blocks are often independent data, such as transactions or parts of files, we are interested in being able to check only one block without recalculating the hashes for the other nodes in the tree.
https://i.redd.it/f7o3dh7zrtx41.gif
The Merkle Tree scheme allows you to check whether the hash value of a particular transaction is included in Merkle Root, without having all the other transactions in the block. So by having the transaction, block header, and Merkle Branch for that transaction requested from the full node, the digital wallet can make sure that the transaction was confirmed in a specific block.

https://i.redd.it/88sz13w0stx41.gif
The Merkle tree, which is used to prove that a transaction is included in a block, is also very well scaled. Because each new “layer” added to the tree doubles the total number of “leaves” it can represent. You don’t need a deep tree to compactly prove transaction inclusion, even among blocks with millions of transactions.

Statistical constants and nChains

To support the Tkeycoin cryptocurrency, the TkeySpace application uses additional statistical constants to prevent serialization of Merkle tree hashes, which provides an additional layer of security.
Also, for Tkeycoin, support for multi-chains (nChains) is already included in the TkeySpace app, which will allow you to use the app in the future with most of the features of the TKEY Protocol, including instant transactions.

The Bloom Filter

An additional level of privacy is provided by the bloom filter — which is a probabilistic data structure that allows you to check whether an element belongs to a set.

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The bloom filter looks for whether a particular transaction is linked to Alice, not whether Alice has a specific cryptocurrency. In this way, transactions and received IDs are analyzed through a bloom filter. When “Alice wants to know about transaction X”, an ID is requested for transaction X, which is compared with the filled segments in her bloom filter. If “Yes” is received, the node can get the information and verify the transaction.

https://preview.redd.it/gjpsbss3stx41.png?width=1093&format=png&auto=webp&s=4cdcbc827849d13b7d6f0b7e7ba52e65ddc03a82

HD support

The multi-currency wallet TkeySpace is based on HD (or hierarchical determinism), a privacy-oriented method for generating and managing addresses. Each wallet address is generated from an xPub wallet (or extended public key). The app is completely anonymous — and individual address is generated for each transaction to accept a particular cryptocurrency. Even for low-level programming, using the same address is negative for the system, not to mention your privacy. We recommend that you always use a new address for transactions to ensure the necessary level of privacy and security.
The EXT_PUBLIC_KEY and EXT_SECRET_KEY values for DASH, Bitcoin, and Litecoin are completely identical. Tkeycoin uses its values, as well as other methods for storing transactions and blocks (RDBMS), and of course — nChains.

Secret key

Wallets in the blockchain have public and private keys.
https://preview.redd.it/br9kk8n5stx41.png?width=840&format=png&auto=webp&s=a36e4c619451735469a9cff57654d322467e4fba
Centralized applications usually store users’ private keys on their servers, which makes users’ funds vulnerable to hacker attacks or theft.
A private key is a special combination of characters that provides access to cryptocurrencies stored on the account. Only a person who knows the key can move and spend digital assets.
TkeySpace — stores the encrypted key only on the user’s device and in encrypted form. The encrypted key is displayed as a mnemonic phrase (backup phrase), which is very convenient for users. Unlike complex cryptographic ciphers, the phrase is easy to save or write. A backup keyword provides the maximum level of security.
A mnemonic phrase is 12 or 24 words that are generated using random number entropy. If a phrase consists of 12 words, then the number of possible combinations is 204⁸¹² or 21¹³² — the phrase will have 132 security bits. To restore the wallet, you must enter the mnemonic phrase in strict order, as it was presented after generation.

Result

Now we understand that your application TkeySpace is a node of the blockchain that communicates with other nodes using p2p messages, stores block headers and validate information using the Merkle Tree, verifies transactions, filters information using the bloom filter, and operates completely in a decentralized model. The application code contains all the necessary blockchain settings for communicating with the network, the so-called chain parameters.
TkeySpace is a new generation mobile app. A completely new level of security, easy user-friendly interfaces and all the necessary features that are required to work with cryptocurrency.
submitted by tkeycoin to Tkeycoin_Official [link] [comments]

BCH is now live on Blockonomics !

Service Link https://bch.blockonomics.co/
What is Blockonomics Blockonomics is an existing service for BTC running since 2014. This update provides a bunch services to the BCH ecosystem:
Feel free to get back to us with any suggestions/queries
submitted by blockonomics_co to btc [link] [comments]

Notes on a first quick test of NTumblebit, on Linux and regtest.

I just thought I'd jot down a few notes on the experience of trying out the current NTumbleBit code.
This is testing on regtest, done for the simple reason that you don't have to wait for testnet blocks (nor sync testnet which is mildly annoying). At this stage I just wanted to learn how this works.
Your starting point is this wiki page.

Installation

You need to download Bitcoin Core. Use at least 0.13.1 - this turned out to be only major blocking point in the whole test, funnily enough, for me - it took me a few hours(!) in debugging to realize that the reason my wallet's coins were not being recognized was simply because 0.12.1 didn't support the necessary RPC syntax. (Note to devs: is there a way to expose errors/exception to the user in the client to help with under-the-hood errors like that? RPC configuration errors are exposed, so that's good of course).
Since this is regtest, that's it: you don't need to sync any blockchains :)
However, you do of course have to configure and start it. Put a bitcoin.conf somewhere (if you're currently running a node it's easiest to make a separate one from your main ~/.bitcoin/bitcoin.conf one, of course. I put one in ~/bitcoin.conf with these settings:
rpcuser=bitcoinrpc rpcpassword=123456abcdef 
(you'll need those values again in a minute) and then run with
~/bitcoininstallationdibitcoind -regtest -daemon -conf=homedibitcoin.conf 
(I didn't need to add server=1 to config).
Note that coins are not available until maturity, so you need to use the generate command to mine blocks, like this:
~/bitcoininstallationdibitcoin-cli -regtest -rpcuser=bitcoinrpc -rpcpassword=123456abcdef generate 101 
Now your regtest bitcoind is running, you can move on to Tumblebit. Follow the instructions in the wiki page mentioned at the start; install .Net Core - the Microsoft instructions are easy to follow, just a couple of apt-gets and install the *.deb. Next, clone the github repo and run the Unit Tests. They passed first time for me.

Running

Next, start up the server, following the instructions in the wiki, except note you're using regtest, so:
cd NTumbleBit.TumblerServer dotnet run -regtest 
The first start up will compile but also set up RSA keys, all that is fine without changes, but you'll need to edit the config so that the RPC is pointing at your regtest instance properly. In this case it (the new config should be located in ~/.ntumblebit/RegTest/server.config) should be edited to look like:
rpc.url=http://localhost:18332/ rpc.user=bitcoinrpc rpc.password=123456abcdef #rpc.cookiefile=yourbitcoinfolde.cookie 
Then restart and check you get no RPC errors. Leave that console open, it's running a server loop.
Next, configure and start the client. Note, we are still following the wiki page, except for the regtest element, so:
cd NTumbleBit.CLI dotnet run -regtest 
You'll most likely get an RPC error again, before it shuts down. Now we need to edit the ~/.ntumblebit/RegTest/client.config file. The server can be left as the default localhost:5000, but you need the right RPC settings:
rpc.url=http://localhost:18332/ rpc.user=bitcoinrpc rpc.password=123456abcdef #rpc.cookiefile=yourbitcoinfolde.cookie tumbler.server=http://localhost:5000 outputwallet.extpubkey= outputwallet.keypath=0 
the last two fields are the important bit, which the wiki page explains in some detail for the testnet case.

Details on setting up a receiving wallet (for this test!)

What you need is a BIP32 based wallet (HD) that supports testnet, and can be run against regtest here (which in most cases will be the same thing to a wallet, as long as it can connect via RPC to sync itself). The good news is the wallet doesn't need to contain any coins. The details of the following probably won't be suitable for most (if you've never used joinmarket it's a bit convoluted), so you'll probably want to find another easy to use wallet; the wiki page should be a good starting point.
For my test I used joinmarket; all we need to do is (a) hook it up to the regtest instance, and (b) extract the BIP32 xpub key that we'll be sending coins to. So in my case the flow of coins is:
Regtest Bitcoin Core wallet (containing 'mined' coins) one branch of my BIP32 joinmarket wallet, configured to sync against the same regtest instance.
I used my new joinmarket code but it's the same for the main joinmarket code. I overwrote joinmarket.cfg to have regtest settings (use this file; only the highlighted settings matter, those are the right ones for this test), then just run python wallet-tool.py randomseed. "randomseed" there can be literally anything, it's read as a brainwallet style seed for the bip32 wallet (because testnet, we don't care about its insecurity). The tpub.. keys seen for each branch are the "xpub" public keys at that branch of the BIP32 wallet. Tumblebit is going to send to a branch below whatever xpub we need, so the simplest is to add a print statement to print the xpub key above that; e.g. add this code:
for i in range(max_mix_depth): print('master for index: ' + str( i) + ' : ' + btc.bip32_privtopub(mixing_depth_keys[i])) 
immediately above this line. Then run again python wallet-tool.py randomseed.
Extract an xpub for any one of the "mixdepths", e.g. I chose:
master for index: 3 : tpubDBFGvUbWtEPKXeWPeG7rUh98iV9GuXSDbnk6ZrZHjcmp134BPByT293HPPQ93DktrVFKpZeAU1ULSdyfmwWuUGvUVLP19JkdUq2mzNKFJPR 
and put that tpub.. key into the field pubkey in the above mentioned 'client.config':
outputwallet.extpubkey=tpubDBFGvUbWtEPKXeWPeG7rUh98iV9GuXSDbnk6ZrZHjcmp134BPByT293HPPQ93DktrVFKpZeAU1ULSdyfmwWuUGvUVLP19JkdUq2mzNKFJPR outputwallet.keypath=0 
Now save and quit.

Running the tumble

Restart the client. If RPC is right, it'll start running, waiting for blocks. Your regtest Core instance will have coins (after the previous generate 101), and those coins will be automatically tumbled, one coin at a time, into the output wallet (in my case, the branch m/0/3/0 which is labelled there 'mixdepth 3, external').
Now you can test and watch the process! Open up a third console and repeatedly generate blocks:
/path/to/bitcoin/bin/bitcoin-cli -regtest -rpcpassword=123456abcdef generate 1 
As each block is generated you'll see the state in the client terminal window updating, showing the phases. A new 'epoch' (right term?) is started every N blocks (I haven't investigated the timing yet), and several epochs run concurrently. In each one, the client can pay in 1 Bitcoin (from Core) and eventually get out 1 coin - fees to the destination (Joinmarket in my case, any other BIP32 in yours). You can replace generate 1 with generate N but I'm not sure if the code will always correctly handle you mining lots of blocks at once! After a large enough number of blocks you'll start to see 'ClientCashout phase' occurring, and txids being printed out. You can go back to your (JM or other) wallet and see the coins arriving; here's what I see after a few epochs have gone through (using my python wallet-tool.py randomseed command):
for mixdepth=2 balance=0.00000000btc mixing depth 3 m/0/3/ external addresses m/0/3/0 tpubDDMAxSHJmxzeXwDnATuvtDizqNSsQKpXGufBDnER44BzEbHy7kg485zZwHqvzprgf6yEQYg9qYYfsLYS1HMmdSuXDzQb2dJSiga9geyM62R m/0/3/0/007 mw9s7tYucxB9yr2L6HkqeDVsh3wdgMdcyK used 0.99995750 btc m/0/3/0/008 mq5TgTNgwYHv88Q4T7wL6kTb1MBSPE3mqK used 0.99995750 btc m/0/3/0/009 mhzQFY8FNvux6SKWKLKmhBB3Sw4MLaSnyu used 0.99995750 btc m/0/3/0/010 mrYECmCf5UKa1BBRMuzprVugsCi9z7oiHo new 0.00000000 btc m/0/3/0/011 mopUNXmHT8ngfBymM3c3EYMg7RLZAf6Zc6 new 0.00000000 btc m/0/3/0/012 mmaVXVfQP4UAYJPhMpQ3FhgXfHzujaxyw4 new 0.00000000 btc m/0/3/0/013 mzYD1AcUFz8SVwJM8EjVCfEM6pcYnHooBR new 0.00000000 btc m/0/3/0/014 my5unLCEMWQBkXBdeJ75VVGk1wrMrT8iDE new 0.00000000 btc m/0/3/0/015 muA76YSTtKKmD6HnVKYhkd9K9TZnPLh8pp new 0.00000000 btc internal addresses m/0/3/1 for mixdepth=3 balance=2.99987250btc 
As you can see, 3 coins have arrived.
submitted by waxwing to TumbleBit [link] [comments]

The ID Struggle is Real & DID will solve it!

Given that a pretty secure banking system exists in the world, it’s a little concerning how the same diligence, advancement and investment hasn’t been made by authorities and governments worldwide to secure identity information.
ID fraud, fake passports and fake police officers are a daily occurance all over the world. And let me once again point towards the banks in comparison: their data, transactions and “memberships” are more secure than your Govt’s ID cards. And that’s the truth.
 How will DID’s BOCA certificates solve the ID issuance problem: 
For the User: We have a 2-Way trust mechanism. Before you provide any type of ID/data, you get to check the authenticity of the requesting party. We call it BOCA: Blockchain Originated Certificate of Authenticity. For the Govt: Finally, a scheme and a way forward. The BOCA certificate has the capacity to provide an authenticated ID request for any department under a Govt/Organisation/Authority.
 The magic is in the crypto! What exactly is a BOCA certificate? (Warning! not for the technically-challenged) 
(See the original idea: https://decentralized.id/slides/) BOCA was supposed to be issued like an SSL certificate; now, it has become something totally different. It still acts like an SSL certificate for the blockchain by the way. A BOCA “certificate” is simply an xpub key shared with us/DID-no-profit foundation. Using the magic of hierarchical deterministic keys, all children/paths derived under the key get authenticated. Therefore, the authority needs to register with us with one account and all possible derivations under that key become automatically related.
The BOCA contract in our Beta release is turning out to be a trusted exchange on the Ethereum network. Users imply send encrypted ID nuggets to the contract. The Crypto-unit (implementing on Blockchain results in $1800 txn fee) makes sure that the subscriber’s key falls under the xpub registed with us. The implementaion of HD keys is done by the user and by the ID issuing authority autonomulsy.
To learn more about HD keys: https://www.w3.org/2016/04/blockchain-workshop/interest/robles.html https://en.bitcoin.it/wiki/Deterministic_wallet
submitted by DID_COMMS_ADMIN to DecentralizedID [link] [comments]

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calculator,.,bitcoin,.,guiminer,.,ghash,.,bitcoin,.,g coin,.,bitcointalk,.,g cash to,.,bitcoin,.,bitcoin,.,miner.g,.,bitcoin,.,hard fork,.,bitcoin,.,hardware wallet,.,bitcoin,.,history,.,bitcoin,.,historical price,.,bitcoin,.,hack,.,bitcoin,.,how to buy,.,bitcoin,.,halving,.,bitcoin,.,how it works,.,bitcoin,.,hashrate,.,bitcoin,.,hardware wallet uk,.,bitcoin,.,h/s,.,c&h,.,bitcoin,.,main.h,.,bitcoin,.,hash.h,.,bitcoin,.,coins.h,.,bitcoin,.,best b#$h -,.,bitcoin,.,best b#$h -,.,bitcoin,.,lyrics,.,h&r block,.,bitcoin,.,h-not-zero,.,bitcoin,.,bitcoin,.,investment,.,bitcoin,.,in gbp,.,bitcoin,.,investment trust,.,bitcoin,.,index,.,bitcoin,.,inventor,.,bitcoin,.,in usd,.,bitcoin,.,india,.,bitcoin,.,inflation,.,bitcoin,.,in dollars,.,bitcoin,.,investment uk,.,i,.,bitcoin,.,in usd,.,i,.,bitcoin,.,in inr,.,i,.,bitcoin,.,to pkr,.,i,.,bitcoin,.,to dollar,.,i,.,bitcoin,.,to naira,.,i,.,bitcoin,.,in rs,.,i,.,bitcoin,.,= satoshi,.,i,.,bitcoin,.,is equal to,.,i,.,bitcoin,.,berapa rupiah,.,i,.,bitcoin,.,in inr in 2009,.,bitcoin,.,japan,.,bitcoin,.,jobs,.,bitcoin,.,japan legal,.,bitcoin,.,jesus,.,bitcoin,.,jobs london,.,bitcoin,.,jobs uk,.,bitcoin,.,july 2017,.,bitcoin,.,jokes,.,bitcoin,.,june 2017,.,bitcoin,.,jihan,.,bitcoin,.,j,.,bitcoinj tutorial,.,bitcoinj micropayments,.,mary j,.,bitcoin,.,belle,.,mary j,.,bitcointalk,.,j maurice,.,bitcoin,.,mary j,.,bitcoin,.,j p morgan,.,bitcoin,.,,.,bitcoin,.,j vty,.,обменник,.,bitcoin,.,bitcoin,.,kurs,.,bitcoin,.,kraken,.,bitcoin,.,koers,.,bitcoin,.,knots,.,bitcoin,.,key,.,bitcoin,.,kopen,.,bitcoin,.,korea,.,bitcoin,.,knowledge,.,bitcoin,.,kaufen,.,bitcoin,.,kurz,.,bitcoin,.,k line,.,bitcoin,.,k,.,bitcoin,.,k value,.,bitcoin,.,k chart,.,john k,.,bitcoin,.,bitcoin,.,k-market,.,k-market jätkäsaari,.,bitcoin,.,k čemu,.,bitcoin,.,bitcoin,.,live price,.,bitcoin,.,latest news,.,bitcoin,.,login,.,bitcoin,.,logo,.,bitcoin,.,ledger,.,bitcoin,.,live,.,bitcoin,.,local,.,bitcoin,.,lottery,.,bitcoin,.,london,.,bitcoin,.,loan,.,bitcoin,.,l-39,.,l-39,.,bitcoin,.,jet,.,bitcoin,.,l'altra faccia della moneta,.,l'ambassade,.,bitcoin,.,l'avenir du,.,bitcoin,.,l'histoire du,.,bitcoin,.,l'inventeur du,.,bitcoin,.,l'évolution du,.,bitcoin,.,l'avenir des,.,bitcoins,.,l'origine du,.,bitcoin,.,bitcoin,.,market,.,bitcoin,.,millionaire,.,bitcoin,.,mining software,.,bitcoin,.,meaning,.,bitcoin,.,mining hardware,.,bitcoin,.,machine,.,bitcoin,.,mining pool,.,bitcoin,.,magazine,.,bitcoin,.,mining rig,.,m,.,bitcoin,.,meaning,.,m.bitcoin2048,.,bitcoin,.,m of n,.,bitcoin,.,m of n transactions,.,siriusxm,.,bitcoin,.,triple m,.,bitcoin,.,m lhuillier,.,bitcoin,.,m pesa vs,.,bitcoin,.,m.bitcoin2048.com отзывы,.,mercado,.,bitcoin,.,bitcoin,.,news uk,.,bitcoin,.,network,.,bitcoin,.,net worth,.,bitcoin,.,news reddit,.,bitcoin,.,nodes,.,bitcoin,.,network fee,.,bitcoin,.,near me,.,bitcoin,.,nedir,.,bitcoin,.,news india,.,bitcoin.n,.,bitcoin,.,n.ireland,.,n&p,.,bitcoin,.,consulting,.,shares in,.,bitcoin,.,piotr_n,.,bitcointalk,.,piotr_n,.,bitcoin,.,m of n,.,bitcoin,.,bitcoinspot.n,.,bitcoin,.,or ethereum,.,bitcoin,.,owner,.,bitcoin,.,online,.,bitcoin,.,original price,.,bitcoin,.,offline wallet,.,bitcoin,.,online wallet,.,bitcoin,.,outlook,.,bitcoin,.,official site,.,bitcoin,.,on amazon,.,o,.,bitcoin,.,e seguro,.,o,.,bitcoinu,.,bitcoin,.,o'reilly,.,bitcoin,.,to aud,.,bitcoin,.,o'reilly pdf,.,bitcoin,.,to euro,.,bitcoin,.,to btc,.,sve o,.,bitcoin,.,o'reilly,.,bitcoin,.,and the blockchain,.,bitcoin,.,price gbp,.,bitcoin,.,predictions,.,bitcoin,.,price uk,.,bitcoin,.,price prediction,.,bitcoin,.,paper wallet,.,bitcoin,.,pizza,.,,.,bitcoin,.,price live,.,p np,.,bitcoin,.,r.i.p.,.,bitcoin,.,p-free,.,bitcoin,.,win32/bitcoinminer.p,.,bitcoin,.,qt,.,bitcoin,.,qr code,.,bitcoin,.,quote,.,bitcoin,.,quantum computing,.,bitcoin,.,que es,.,bitcoin,.,quora,.,bitcoin,.,questions,.,bitcoin,.,qt update,.,bitcoin,.,qt wallet location,.,bitcoin,.,quantum,.,bitcoin,.,q,.,bitcoin,.,q es,.,q son,.,bitcoins,.,q es un,.,bitcoin,.,q son los,.,bitcoins,.,q es el,.,bitcoin,.,q comprar con,.,bitcoins,.,bitcoins que significa,.,bitcoin,.,q significa,.,bitcoin,.,rate,.,bitcoin,.,reddit,.,bitcoin,.,review,.,bitcoin,.,rival,.,bitcoin,.,rate gbp,.,bitcoin,.,rise,.,bitcoin,.,regulation,.,bitcoin,.,rich list,.,bitcoin,.,rate history,.,bitcoin,.,regulation uk,.,r,.,bitcoinmarkets,.,r,.,bitcoin,.,uk,.,r,.,bitcoin,.,canada,.,r,.,bitcoin,.,cash,.,r,.,bitcoin,.,package,.,r,.,bitcointalk,.,r,.,bitcoin,.,mining,.,r,.,bitcoin,.,abc,.,r,.,bitcoin,.,analysis,.,bitcoinxt,.,bitcoin,.,share price,.,bitcoin,.,stock,.,bitcoin,.,split,.,bitcoin,.,segwit,.,bitcoin,.,stock price,.,bitcoin,.,shares,.,bitcoin,.,symbol,.,bitcoin,.,suisse,.,bitcoin,.,scams,.,bitcoin,.,stock market,.,bitcoins value,.,bitcoin,.,s 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chart,.,bitcoin,.,value history,.,bitcoin,.,value gbp,.,bitcoin,.,vs ethereum,.,bitcoin,.,vs usd,.,bitcoin,.,volatility,.,bitcoin,.,vs litecoin,.,bitcoin,.,value 2010,.,bitcoin,.,vs gold,.,bitcoin,.,v litecoin,.,bitcoin,.,v dollar,.,bitcoin,.,v euro,.,bitcoin,.,v gold,.,bitcoin,.,v blockchain,.,bitcoin,.,v onecoin,.,bitcoin,.,hack v.2,.,bitcoin,.,worth,.,bitcoin,.,wiki,.,bitcoin,.,wallet uk,.,bitcoin,.,what is it,.,bitcoinwisdom,.,bitcoin,.,whitepaper,.,bitcoin,.,wallet online,.,bitcoin,.,wallet address,.,bitcoin,.,wallet download,.,bitcoin,.,miner.w,.,bitcoin,.,w polsce,.,bitcoiny w polsce,.,bitcoin,.,w niemczech,.,bitcoin,.,w chmurze,.,bitcoin,.,w żabce,.,bitcoin,.,w polsce legalny,.,bitcoin,.,w chinach,.,bitcoin,.,w prawie polskim,.,bitcoin,.,w górę,.,bitcoin,.,xe,.,bitcoin,.,xbt,.,bitcoin,.,xt,.,bitcoin,.,xbte,.,bitcoin,.,xapo,.,bitcoin,.,xrp,.,bitcoin,.,xt price,.,bitcoin,.,xpub,.,x,.,bitcoin,.,generator,.,bitcoin,.,yahoo finance,.,bitcoin,.,year 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fee,.,0.15,.,bitcoins,.,0 25,.,bitcoins,.,0.05,.,bitcoin,.,in euro,.,bitcoin,.,2.0,.,0.1,.,bitcoins,.,0.21,.,bitcoins,.,bitcoin,.,1st august,.,bitcoin,.,1 million,.,bitcoin,.,101,.,bitcoin,.,10 year chart,.,bitcoin,.,10000,.,bitcoin,.,148,.,,.,bitcoin,.,10 year prediction,.,bitcoin,.,100k,.,bitcoin,.,100 dollars,.,bitcoin,.,10 years ago,.,1,.,bitcoin,.,in gbp,.,1,.,bitcoin,.,in pounds,.,1,.,bitcoin,.,in £,.,1,.,bitcoin,.,to dollar,.,1,.,bitcoin,.,in inr,.,1,.,bitcoin,.,to euro,.,1,.,bitcoin,.,in gdp,.,1,.,bitcoin,.,in eur,.,1,.,bitcoin,.,to myr,.,1,.,bitcoin,.,in sterling,.,bitcoin,.,2010,.,bitcoin,.,2017,.,bitcoin,.,2020,.,bitcoin,.,2018,.,bitcoin,.,2009,.,bitcoin,.,2013,.,bitcoin,.,21 million,.,bitcoin,.,2012,.,bitcoin,.,2014,.,2,.,bitcoin,.,to usd,.,2,.,bitcoin,.,price,.,2,.,bitcoin,.,to inr,.,2,.,bitcoin,.,wallets,.,2,.,bitcoins to dollars,.,2,.,bitcoins free,.,2,.,bitcoins a month,.,2,.,bitcoin,.,qt,.,bitcoin,.,2 year chart,.,bitcoin,.,2 paypal,.,bitcoin,.,3000,.,bitcoin,.,31st july,.,bitcoin,.,3 confirmations,.,bitcoin,.,3.0,.,bitcoin,.,3 year chart,.,bitcoin,.,3 month chart,.,bitcoin,.,300,.,bitcoin,.,365 club,.,bitcoin,.,3000 usd,.,bitcoin,.,30 confirmations,.,3,.,bitcoins in gbp,.,3,.,bitcoins,.,3,.,bitcoins to usd,.,3,.,bitcoin,.,in euro,.,3,.,bitcoin,.,to eur,.,bitcoin,.,3 unlimited,.,bitcoin,.,3 day chart,.,bitcoin,.,3 address,.,bitcoin,.,4000,.,bitcoin,.,4chan,.,bitcoin,.,4 billion,.,bitcoin,.,401k,.,bitcoin,.,4 backpage,.,bitcoin,.,43,.,bitcoin,.,40000,.,bitcoin,.,4k,.,bitcoin,.,4 year chart,.,bitcoin,.,48,.,4,.,bitcoins,.,4,.,bitcoins to usd,.,4,.,bitcoins in gbp,.,4,.,bitcoin,.,to eur,.,bitcoins 4 backpage,.,bitcoin,.,4 igaming,.,bitcoin,.,4 u,.,bitcoin,.,4 november,.,bitcoin,.,4 cash,.,bitcoin,.,5 year chart,.,bitcoin,.,51 attack,.,bitcoin,.,500,.,bitcoin,.,5 year,.,bitcoin,.,500 000,.,bitcoin,.,5000,.,bitcoin,.,50000,.,bitcoin,.,5 year price,.,bitcoin,.,5 years ago,.,bitcoin,.,5 year forecast,.,5,.,bitcoins in pounds,.,5,.,bitcoins,.,5,.,bitcoins to usd,.,5,.,bitcoin,.,free,.,5,.,bitcoin,.,in euro,.,bitcoin,.,5 years,.,bitcoin,.,5 minutes,.,bitcoin,.,5 min,.,bitcoin,.,5 unlimited generator,.,bitcoin,.,666,.,bitcoin,.,6 months,.,bitcoin,.,6 confirmations,.,bitcoin,.,6 month chart,.,bitcoin,.,6000,.,bitcoin,.,60 minutes,.,bitcoin,.,6 confirmations time,.,bitcoin,.,6 month price,.,bitcoin,.,6 years ago,.,bitcoin,.,60 day chart,.,6,.,bitcoin,.,network confirmations,.,,.,
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Building Bitcoin Websites - YouTube Michael Bloomberg breaks silence on Bitcoin! Step 7.3 Connecting your Wallet to BTCPay Server with xpub Ledger Nano S or other like Electrum How to create a Bitcoin Wallet and get its xpub Hierarchical Deterministic Wallets (HD) - BIP32 generating master xprv xpub from seed

Since version 4.0 Bitcoin Wallet supports HD Wallets and derives keys from a master node in the BIP32 format. Since version 4.18 it provides a simple export functionality [3] for the key in the format: Bitcoin ABC has scheduled a Bitcoin Cash protocol change via hard fork on November 15th.Feb 27, 2018 - The Bitcoin Core development team has released client Version however major companies and wallet providers have been slow When bitcoin address is generated, a private key is created with the address. From the Internet I learned about Bitcoin. Bitcoin Address allowed by our tool are base58 or xpub format. Our tool will check the final / current balance, number of transactions and total amount received up to 50 addresses by query, if you want to check more than 50 addresses, please divide your list and check up to 50 addresses at a time. The acronyms are "xpriv" and "xpub" because the base58 check prefix results in those 4 characters for a mainnet extended pub/priv key. The difference between a extended public key and a normal public key is that it also contains information about the bip32 chain (deterministic chain/hierarchy). Blockchain-based currencies use encoded strings, which are a Base58Check encoding of some hash, typically that of a public key. The encoding includes a prefix (traditionally a single version byte), which affects the leading symbol(s) in the encoded result.The following is a list of some prefixes which are in use in the reference Bitcoin codebase.

[index] [27324] [19889] [26141] [28762] [4594] [13126] [14455] [23285] [20391] [11568]

Building Bitcoin Websites - YouTube

Continuation of bitcoin python series, this time I'm generating master extended private (xprv) and master extended public (xpub) keys using python3. I am going through the implementation of BIP32 ... Bitcoin is a cryptocurrency and a digital payment system invented by an unknown programmer or a group of programmers under the name Satoshi Nakamoto It was released as open source software in The s... This is a step 7.3 of "How to build an e-commerce store and accept Bitcoin series. In this video, I will show you how you can accept Bitcoin payments to your WooCommerce store for free, by ... Use the code R8avSs and get 3% every time you purchase hashpower to mine Bitcoin and Ethereum and a ton of other Cryptocurrencies at https://www.genesis-mining.com 3% discount code: R8avSs My BTC ... Xpub Bitcoin Receiving Addresses with SmartBit API - Duration: 7:21. m1xolyd1an 3,504 views. 7:21. Blockchain Receive Payments API v2 HD BIP32 xpub - Duration: 11:36.

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