Where can I find records of blockchain branches?


There may be websites that index them, however, as blocks only get propagated once they get accepted as new best chain, such branches don't get relayed universally, and every node on the network can get a different view.

Bitcoin Core can be queried for known branches through the getchaintips RPC command.

For example, the output on my node is currently: { "height": 405040, "hash": "0000000000000000030014f0c61351fe2f9e744d4d1c111cca03c94b7dc831f0", "branchlen": 0, "status": "active" }, { "height": 404812, "hash": "0000000000000000010f42545dadcf1262ceebcade6629b16282eb59265c937d", "branchlen": 1, "status": "valid-fork" }, { "height": 404548, "hash": "0000000000000000010edc4bee21e25e976eb0515da5740d54d060d1579479fa", "branchlen": 1, "status": "valid-fork" }, { "height": 404145, "hash": "0000000000000000014fc67e896071d9cc5345fea4d04795ff6ee8f9ae142268", "branchlen": 1, "status": "valid-fork" }, { "height": 404120, "hash":...

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In Settings -> Addresses, you can organize the funds in your wallet.

This section of your wallet is also where you can view and manage individual addresses.

Organizing your funds

You can organize funds in your wallet however you like. Common ways to organize your funds include dividing them up into categories like spending, savings, or business-related expenses.


Your wallet automatically manages your bitcoin addresses for you by generating a new one each time you need one to receive a payment. You can click on Manage to the right of a category to see all of the individual addresses that have been generated for that specific category.

To create a new address, navigate to the right category, then click on Manage -> Add New Address. Each new address will display below, and you can generate an unlimited number in each category.

Labels for new addresses can be created by clicking Add a Label to the right of each...

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Are Bitcoin and blockchain the same thing? No, they aren’t. However, they are closely related. When Bitcoin was released as open source code, blockchain was wrapped up together with it in the same solution. And since Bitcoin was the first application of blockchain, people often inadvertently used “Bitcoin” to mean blockchain. That’s how the misunderstanding started. Blockchain technology has since been extrapolated for use in other industries, but there is still some lingering confusion.

How are Bitcoin and blockchain different?

Bitcoin is a type of unregulated digital currency that was first created by Satoshi Nakamoto in 2008. Also known as a “cryptocurrency,” it was launched with the intention to bypass government currency controls and simplify online transactions by getting rid of third-party payment processing intermediaries. Of course, accomplishing this required more than just the money itself. There had to be a secure way to make...

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There’s been a bit of a buzz recently about using blockchains, one of the approaches used within the Bitcoin protocol, to support things other than the bitcoin currency.

Honduras is reportedly piloting a land register using blockchain technologies. On a smaller scale, the Isle of Man is piloting a registry of digital currency companies, again using blockchain. There are articles and videos that claim that blockchain can be used in the internet of things, for health records, and to track votes.

I want to dig a bit deeper and try to work out the practical application of blockchain for sharing registries, with a particular eye on open data. But before I can start looking at how those kinds of applications might work, I needed to understand how the Bitcoin blockchain works, at a technical level.

Note that this is written based only on a couple of days of research. I might well have missed things and certainly haven’t gotten into the arguments and subtleties within...

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The early internet dealt with intangibles. You sent or received emails, corresponded on forums, read and distributed articles. This modern internet deals with assets, your most valuable immediate items that you can touch and want to protect. These assets are stored in encoded form on a network-to-network chain called the blockchain or ledger, where each participant sees who you do business with. This not only protects your business dealings and prevents theft, but, also, simplifies your affairs, quickens the process, reduces errors, and saves you from hiring a third party.

This decentralized blockchain system is going to change your life from the way you transact business or manage assets, to the way you use your machines, vote, rent a car, and even prove who you are. Along the way, it will transform banks and other financial institutions, hospitals,...

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Transaction data is permanently recorded in files called blocks. They can be thought of as the individual pages of a city recorder's recordbook (where changes to title to real estate are recorded) or a stock transaction ledger. Blocks are organized into a linear sequence over time (also known as the block chain). New transactions are constantly being processes by miners into new blocks which are added to the end of the chain and can never be changed or removed once accepted by the network (although some software will remove orphaned blocks).

Block structure


Each block contains, among other things, a record of some or all recent transactions, and a reference to the block that came immediately before it. It also contains an answer to a difficult-to-solve mathematical puzzle - the answer to which is unique to each block. New blocks cannot be submitted to the network without the correct answer - the process of "mining" is essentially the process of...

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Imagine living in the world when there are be no bank documents, stamps, or purchase receipts. When people no longer need to validate the process of selling or buying, and register the cash transaction with the legal entity. All acts of selling or purchasing will be kept as records in one place.

This scenario is possible with emerging crypto-currency such as Bitcoin, which is already accepted as valid currency by the PayPal payment system, many chain stores, internet shops and even the Universities. With the rapid transformation of the banking system and the emerging popularity of non-card digital payment systems, people around the globe routinely use digital payments in everyday life. What all current payment methods have in common is the complexity, traditional credit card authentication methods, cryptography, and tokenization, as well as their dependence on financial institution products to process payments. Eventually, a new payment method should have been originated....

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Whenever we talk about blockchain, immutability is the next thing that comes up. There are different views on the topic, but when it comes down to it, everyone is looking for an answer to a single question – are blockchain and Bitcoin immutable? The short answer is – No, blockchains and Bitcoins cannot be changed. The long answer is that you still need to know the reasons behind that answer in order to understand the implications.

Before diving into the topic, it is important to understand the basics of blockchain. However, we will not get into core technical details, since it is a topic in itself. So, what is blockchain? Many people interchangeably use the term blockchain and Bitcoin, but they are not the same. Blockchain is a concept, an idea. Bitcoin is the first and major implementation of that idea. There can be other different implementations on top of blockchain which are nowhere related to Bitcoin. In fact, there has been decent progress in other areas such as smart...

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Every future-oriented company now wants to jump on a bandwagon of blockchain. However, no matter how innovative and game-changing the technology is, it can’t be applied to each business case. Not only can it be inefficient but it can even turn out to be ridiculous and futile, and a mere waste of money. According to our blockchain developers’ advice, before using blockchain technology, you need to understand its underlying functionality and application areas and establish whether they map with your specific business strategies.

There is a discrepancy between what is said about blockchain applications and the practical reality. As a technology, blockchain should be used as the best solution to a certain problem. Instead, we often search for a problem we could solve with blockchain only to join the trend and to be among its first adopters. However, the attempts to apply the technology to a case where it doesn’t make sense will usually cost you a fortune.

Though media...

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So far, Blockchain technology has been mostly implemented in real use cases in finance and the economy, while other spheres remained underexploited. But as time goes by, more and more projects begin cropping up in industries unrelated to finance.

Cointelegraph has already published articles on the use of Blockchain technology in the food, tourism, healthcare and energy industries and even distributed computation. Some of these use cases are quite raw and need a lot of work before they become feasible.

Let’s instead take a look at the cases where Blockchain solutions are more fleshed out.


The first sphere that deserves our attention is medicine. No doubt, just thinking about all the piles of paperwork that you have to deal with when taking care of your health, it’s enough to make you actually sick - and that’s just your paperwork. Now imagine how many patients attend any given hospital and how many files are being stored and managed there. The...

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Be sure, that link once created will always point to original location

URL shorteners (e.g. bit.ly) are useful in our online life. But did it occur to you that those links may not always lead where they're supposed to? Using short links is a great way for hackers and malware operators to send you to a phishing or malware-infected site, instead of your favorite cookie recipe. Chainy.link solves this problem with the help of an Ethereum smart contract (

how it works?


If you are a moderator of content submitted by different users, you need to make sure users can't replace the short links included with their submitted content. If you know the shortened URL in the article today leads to Forbes.com, you want to make sure that long after publication this link won't lead users somewhere else. Replacing linked shortened with third-party services, after content has been approved and published, is the most common way to get unexpecting traffic to bad sites. Using Chainy...

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What is Blockchain?

Blockchain is a data structure that allows for a secure digital ledger to be produced and shared among a network of various computers/devices. The ledger can be accessed securely across the network, without the need for one central authority. Once data has been added to the ledger, it is intended to remain there. As such, all users of the network must approve transactions before they are recorded and verified. Blockchain offers transparency, as all users of the network may access the most up-to-date version of the ledger. In Mckinsey & Company’s “Blockchain in Insurance – opportunity or threat” white paper they note that whilst insurance generally lags behind the banking sector technologically, it is uniquely positioned to benefit from the use of Blockchain.

How will Blockchain help the insurance industry in the future?

Insurers manage many large and complex transactions on a daily basis and Blockchain could provide a solution for...

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1. What is a database?

A database is a collection of data that is stored for a specific purpose and organized in a manner that allows its contents to be easily accessed, managed, and updated. Although this definition includes stored data collections such as libraries, file cabinets, and address books, when we talk about databases we almost invariably mean a collection of data that is stored on a computer. There are two basic categories of database. The most commonly encountered category is the transactional database, used to store dynamic data, such as inventory contents, which is subject to change on an ongoing basis. The other category is the analytical database, used to store static data, such as geographical or chemical test results, which is rarely altered.

Strictly speaking, a database is just the stored data itself, although the term is often used, erroneously, to refer to a database and its management system (DBMS).

A brief history of the...

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