It costs money to write to any of the popular blockchains. The cost is calculated in Dollars ($) or Satoshi's (100 milionth of 1 Bitcoin) per byte. The coss vary per blockchain and MOMENT, sometimes the cost is higher than a little while later. We use bitinfocharts.com to calculate the cost.
|Bitcoin (BTC)||Transaction fee chart|
|Bitcoin SV (BSV)||Transaction fee chart|
|Bitcoin Cash (BCH)||Transaction fee chart|
|Ethereum||Transaction fee chart|
|Gulden||Transaction fee chart|