How to install a pruned Bitcoin full node on Ubuntu VPS If you want to run a Bitcoin full node to use bitcoin-cli or support the Bitcoin network, you don't need to setup and maintain a physical server,

If you are a web developer and use Google Recaptcha (or any service that uses Google Recaptcha like Cloudflare or Incapsula), you unintentionally lock out and delay many potential and existing users. This

If you want to run a full node or CLI wallet for an altcoin, you may decide to use a Linux VPS. Most standard VPS come with RAM between 512 MB - 2 GB and storage between 10-40 GB. This is enough for an

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How to buy and sell Bitcoin without KYC (without ID/passport) in 2019 The original vision for Bitcoin is peer to peer electronic cash, secured by cryptography and without the need to trust a centralized

If you need to write in multiple languages, use certain symbols or if a key breaks, you can customize your keyboard map with xmodmap. To edit the keyboard map, open ~/.Xmodmap with your favorite editor

Many people already know how to use GPG/PGP to encrypt emails, messages and files with asymmetric public key encryption. However there are times when symmetric (password) encryption may be a better option.

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If you make bitcoin transactions regularly, you may notice the option "Replace by fee". Replace by fee (RBF) means that the sender can resend the transaction with a higher fee, if they accidentally

If you have a long list of bitcoin addresses and want to find out the balance of each address but don't want to check each address manually, you have multiple options. To check only the balance of your

Calculate the prices of Bitcoin, Ethereum, Monero and other cryptocurrencies in fiat (USD, EUR, etc) with the Web4Crypto crypto <-> fiat calculator. Clearnet: Onion hidden service: Works without

Are you a developer? Do you want to integrate bitcoin or other cryptocurrencies into your website, app or program? Here are 5 useful APIs for developers. These APIs return JSON and can be used with PHP,

Although many people claim that bitcoin is anonymous, bitcoin is only pseudonymous, because it has a transparent blockchain. This means that anyone can see that an address contains x bitcoin, to where

Tx not confirmed yet? "Unconfirmed" since hours? Set a too low fee? Don't worry. You can use a free transaction accelerator and get confirmations within one hour. Use the free transaction accelerator

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