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How to confirm transaction any altcoin PHP

I’m working on a webapp right now (for me personally) and I now come to the part where I want to validate if someone send me a certain amount of altcoin, lets say Verge, and if I received said amount in my Verge wallet. I looked around to check if there are maybe some APIs […]

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CoverUS helps pay for your health insurance by using blockchain technology to securely broker your health data

CoverUS (pronounced “cover us”) is a blockchain-based, pre-launch healthcare startup that plans to reward its members with cryptocurrency in exchange for the right to broker their healthcare data. The startup won the Blockchain for Social Impact Hackathon in the Financial Inclusion category in November, and was featured in a FastCompany article earlier this month. Although no date is set for… […]

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How to generate a valid hash for a bip39 seed phrase?

I’m trying to prove to myself that I understand how bip39 seed phrases work… I’m doing most of this in a spreadsheet because I thought it would be easier but I’m having trouble with the checksum value… These are the steps I’m taking: I start with a valid 24 word seed then change each word […]

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bitcoin volatility and transaction fees

We know that the Bitcoin currency is volatile, but does the transaction fees correlate with it’s volatility? Is it right to assert that if there is high level of Bitcoin demand, then the currency goes up, and then if the demand comes from a great amount of person, then the network size increases and so […]

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How to fix DNS problems after upgrading Ubuntu 17.10 from ubuntu 17.04/16.10/16.04

One of my friend recently upgraded his ubuntu 17.04 to ubuntu 17.10 and after the upgrade my DNS stopped working. Use one of the solutions to fix DNS issue on Ubuntu 17.10 Solution 1 Add the google DNS server in /etc/systemd/resolved.conf file sudo nano /etc/systemd/resolved.conf add the following line DNS=8.8.8.8 FallbackDNS=8.8.4.4 Save and exit the […]

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How mine cloned altcoin new algorithm?

Hi there i will created new clone for practice. Changed algo at cloned one For example nist5 to skein. I created genensis block. Created daemon and qt and nodes are connected. Everything is well to here. But i can’t start mining new coin. Stratum some times not starting. Sometimes it is starting and not working […]

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I used the wallet out of sync and cannot find my adress

This is the first time I am buying BTC, I used my bitcoin core wallet out of sync to generate and address and then I shut down the PC after the full sync has been made. Now I cannot find the address in the file anywhere. I still have the address and if I search […]

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Disable netplan on Ubuntu 17.10

Netpaln is default network configuration tool introduced in ubuntu 17.10 and if you want to disable this to go back to old ways of configuring network use the following procedure. Netplan is a YAML network configuration abstraction for various backends (NetworkManager, networkd). It is a utility for easily configuring networking on a system. It can […]