Crypto account activation
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Crypto account activation
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Content:
- 1.1 Introduction
- Everything you need to know about Crypto Trading Bots
- Crypto Wallet
- Thales Crypto Command Center Setup - Step 6 - RoT Activation and License Upload - Video
- Avoiding a cryptocurrency scam
- Bitcoin wallet from Satoshi era mysteriously activates after 11 years
- Goodbye, Staples Center. Hello, Crypto.com Arena
- How to Use Binance Pay to Send Crypto to a Friend Who Doesn't Have a Binance Account?
1.1 Introduction
The Apriorit team always tries to stay on top of the latest industry trends. While blockchain technology is at the peak of popularity, our developers are diving deep into the creation of blockchain-based applications. In this article, we want to share our experience in developing smart contracts for application licensing via blockchain. In addition to cryptocurrency, the blockchain is used for security, smart contracts, and record keeping. In this article, we describe how the blockchain can be applied to build a licensing system for an application.
We decided to use Ethereum as the decentralized platform for creating our smart contract. Using smart contracts for software licensing allows tracking the ownership of the license and moving its value around.
The traditional approach to licensing involves a web service and some central database server that stores information about licenses and users. When an application first starts, the user has to activate the license somehow either by entering a login and password or some generated key and then the application contacts the server to verify the license.
Of course, the database can be replicated and then easily restored, but things can get worse if an attacker modifies some data. This approach differs in that the information about all issued licenses is stored in the form of blocks in a blockchain.
The whole process of getting and activating licenses should generally look the same for the end user. Though the internal architecture differs due to integration with a decentralized ledger, all the additional steps for interacting with the blockchain are performed behind the scenes.
The interaction with the distributed database is performed through the interface of a smart contract. An entity token or license token is used to represent the instance of the license. We can also consider another architecture option that eliminates the necessity for an intermediate web service and is based on direct communication between the application and the blockchain network.
The benefit of such a solution is that the license data is saved directly to the distributed ledger. Therefore, fewer components handle the data and work with the blockchain. However, this approach assumes that the user has some Ether on their account in order to purchase the license. The application also needs to have credentials of the account owner in order to send transactions to the blockchain.
A blockchain-based license is generally purchased on the product website. After purchasing a license, the user receives an activation key. This key is a unique ID of the license token. So to prove that the user has purchased a license, their Ethereum account should contain one token on its balance.
In order to activate a license, the user enters the activation key into the application. Under the hood, the application sends a transaction to the blockchain to mark this license as active using the unique identifier of the transaction.
If the transaction succeeds, the license is activated. During activation, the token is bound to the unique identifier of the device in order to prevent the same license from being used on several devices. If the license has already expired, the token is marked as expired and is no longer valid. The LicenseToken smart contract holds a list of tokens together with information about the user account balance.
Each token is an instance of the LicenseInfo structure, which includes the following information:. In addition to the functions mandatory for ERC, the contract also provides several methods that contain licensing business logic:.
Otherwise, any user of the Ethereum network could manage application licenses. The owner of the contract can be the account from which the contract has been deployed to the network. In the code of a smart contract, we can access the address account that called the contract method. This can be done with the help of the global variable msg.
The concept is to save this address in the constructor of the contract and require certain methods to confirm that the current caller is the owner. Since a smart contract should be deployed to the blockchain network to run, debugging and testing is a little bit complicated.
Nevertheless, in order to check that our smart contract works as expected, we can test it with auto tests using the Truffle framework.
This is a good way to emulate real cases in order to reveal bugs prior to deploying our smart contract to the main or test networks, since Truffle uses an in-memory blockchain. Moreover, Truffle provides ten test accounts with some Ether on them that can be used for testing. To make the application able to interact with a distributed database, we should have already deployed our smart contracts to the blockchain network.
The Infura API can be used too. As you can see, there are significant differences in the use of transactions and calls that should be taken into consideration. Transactions should be signed prior to sending to the blockchain, and there are a couple of ways to achieve this:. For authentication needs, the application has to keep either the private key or the password inside it, which is a potential security hole.
As an alternative, the application can send requests to the web service that will then send transactions to the blockchain.
We think that the blockchain can be considered an alternative to the traditional licensing approach since it provides the following advantages:. We hope this article was helpful for developers who want to leverage blockchain technology for their needs. The Apriorit team has expertise in developing blockchain-based applications for various purposes.
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Everything you need to know about Crypto Trading Bots
Ledger is the latest crypto company working on a debit card that connects directly with a crypto wallet. The company unveiled at its Ledger Op3n conference plans to launch its own debit card called the Crypto Life card. While Ledger is better known for its hardware wallets, the company has been working hard on the software part called Ledger Live. From the Ledger Live app on desktop and mobile, users are not limited to sending and receiving crypto assets.
Crypto Wallet
A programmed waiting period between lock-in and activation has since given node operators and miners time to fully upgrade to the latest version of Bitcoin Core, Only once they do so will they be able to enforce the new rules making it possible to use the new type of transaction. It was first proposed by Greg Maxwell in Taproot upgrades to a different scheme called Schnorr. Every transaction using Taproot will now use this new digital signature scheme, adding capabilities designed to boost the privacy, security and scale of Bitcoin transactions. Taproot will have many positive repercussions for various projects across the ecosystem. For instance, multisignature transactions, which require more than one out of a group of signers to sign a transaction, will be cheaper and will use less data.
Thales Crypto Command Center Setup - Step 6 - RoT Activation and License Upload - Video
The wallet was last used on 17 May, , less than one year before the pseudonymous Satoshi Nakamoto sent their final emails to fellow crypto developers. The semi-anonymous nature of bitcoin means it is possible to track transactions on the public blockchain, however it is not possible to link them to an individual or group. The 50 bitcoins acquired at that time come from the mining reward size, which was 50 BTC per block at that time. Last month, a bitcoin wallet containing BTC also activated after not being used for nearly nine years. Registration is a free and easy way to support our truly independent journalism.
Avoiding a cryptocurrency scam
You can find any announcements from zkSync on Discord opens new window , Telegram opens new window , and Twitter opens new window. Our fees depend on Ethereum Layer 1 L1 gas prices because with every zkSync Layer 2 L2 transaction, we post related data on Layer 1 — this allows us to inherit the security of Ethereum. At peak usage of zkSync, the withdrawal time is about 10 minutes. During lower use, it can take up to 7 hours. Currently, withdrawal times depend on the activity on zkSync, when we finalize blocks, and submit them to L1.
Bitcoin wallet from Satoshi era mysteriously activates after 11 years
Wirex Help Centre. How to activate cryptocurrency accounts? Wirex How To: Activate Your Currency Accounts To activate accounts, please follow these steps: In the Wirex Android and iOS applications On the dashboard, tap the Preferences wheel in the upper right corner Find Accounts, you will be given a catalog of already activated accounts with an option to hide or unhide them Select Add accounts. You will see the list of all the accounts available for use Tap any account from the list to activate it. The selected account will now be displayed in the dashboard In the Wirex Web application On the dashboard click the Preferences wheel in the right upper corner Find Accounts.
Goodbye, Staples Center. Hello, Crypto.com Arena
August 4, During these last 11 years, bitcoin has been used for payments, exchange trading, and as a store of value. Not all mined bitcoins move much after their creation, however. On May 20, , some of the earliest mined bitcoins were moved for the first time in 11 years Crystal article.
How to Use Binance Pay to Send Crypto to a Friend Who Doesn't Have a Binance Account?
RELATED VIDEO: 🔴LIVE~ #BITCOIN FACE BOUNCE DE LA 33K! URMEAZA UN RALIU? ANALIZA#ETH#BNB#ADA#EGLD#LINK#SOL#ATOM#DOTA representation of the virtual cryptocurrency Bitcoin is seen in this picture illustration taken October 19, NEW YORK, Nov 15 Reuters - Bitcoin went through a major upgrade on Sunday that enables its blockchain to execute more complex transactions, potentially widening the virtual currency's use cases and making it a little more competitive with Ethereum for processing smart contracts. Smart contracts are self-executing transactions whose results depend on pre-programmed inputs. The enhancement, called Taproot, is the most significant change to the bitcoin protocol since the SegWit Segregated Witness block capacity change in SegWit effectively increased the amount of transactions that could fit into a block by pulling data on signatures from bitcoin transactions. Noelle Acheson, head of market insights at Genesis, a digital currency prime broker, said bitcoin's potential applications have become broader with Taproot.
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