Michal Čihař - Bitcoin


To support Bitcoin network I've decided to run Bitcoin Core daemon and ElectrumX server. You can freely use those services.

If you are interested in running similar service, you might follow instructions I've used to set this up.

The service is provided for free, however I welcome donations to keep it runninng on following addresses.

Bitcoin: 3KPccmPtejpMczeog7dcFdqX4oTebYZ3tF

Litecoin: MJF9wDV94HBfuy7yiHbPBcHreDULMKov7w

Recent blog posts about cryptocurrencies

Frequenty asked questions

How to use this server?

You can configure your Electrum client to use btc.cihar.com as a server.

My transaction is still unconfirmend, can you do something about that?

You probably have sent the transaction with low fee or the Bitcoin network is congested. The server shows fee estimates on console during connection, but Electrum usually uses these so unless you set the fee manually or very low, the transaction should be included in blockchain in reasonable time.

If you want to check current network status and size of mempool (where not processed transactions are stored), you can look at Johoe's Bitcoin Mempool Statistics which can give you good idea how long transactions with certain fee are waiting.

To speed up the transaction you can use one of the transaction accelerators available, for example ViaBTC Transaction Accelerator (please note that they accept limited number of transactions for free every hour).

My funds were stolen and I was last connected to your server

The server has no control over your funds, as the Electrum server is not holding your private keys, these are stored only in your client. To send transaction it has to be signed by your private key, so most likely it has been stolen from your system (check for malware) or you've shared the private key with some online service which abused it. There is no way to recover from this, please handle your private key carefully.

The best way to store your private keys is to use hardware wallet, for example Trezor. With it the key is stored securely outside your computer and no funds can be sent without physical access to the hardware (you have to confirm transaction by pressing button on the device).

Links to products or services which you might find useful

These links include my refereal code, any bonus obtained this way will be used to improve this service.

Support this project

Do you like this project? You can contribute to it either using your work (patches are welcome) or you can donate to the author.