OP_RETURN

This script calls your local bitcoin node and will look for any OP_RETURN entries on the current block (or specified block). If suitable entries are found, an image will be generated rendering the text values.

Script Location

The script is installed at ~/nodeyez/scripts/opreturn.py.

Configuration

To manage and configure this script, use the nodeyez-config tool

sudo nodeyez-config

To manually configure this script, edit the ~/nodeyez/config/opreturn.json file

Fields are defined below

field name	description
backgroundColor	The background color of the image expressed as a hexadecimal color specifier. Default #000000
dataRowEvenTextColor	The primary color to use for OP_RETURN text expressed as a hexadecimal color specifier. Default #ff7f00
dataRowOddTextColor	The alternate color to use for OP_RETURN text expressed as a hexadecimal color specifier. Default #dddd00
excludedPatterns	List of regular expression patterns to exclude from rendered output
height	The height, in pixels, to generate the image. Default 320
interval	The amount of time, in seconds, the script should wait before data gathering and image creation again. Default 30
textColor	The color to use for the header expressed as a hexadecimal color specifier. Default #ffffff
width	The width, in pixels, to generate the image. Default 480

Run Directly

Ensure the virtual environment is activated

source ~/.pyenv/nodeyez/bin/activate

Change to the scripts folder

cd ~/nodeyez/scripts

Run it

python opreturn.py

Press CTRL+C to stop the process

Run at Startup

To enable the script to run at startup, as the privileged user run the following

sudo systemctl enable nodeyez-opreturn.service

sudo systemctl start nodeyez-opreturn.service

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