usptact

How to convert private key to WIF

0. Overview

WIF = base58check encode ([version byte][private key][checksum])

version byte = 80 for mainnet, ef for testnet and regtest

checksum = first 4 bytes of double SHA256 of private key

usptact

$ find . -maxdepth 1 -type d \( ! -name . \) -exec bash -c "cd '{}' && git pull" \;

usptact

System: MacOS Sonoma 14.1.2

First, try to unplug and plug back the Yubikey.

Second, try rebooting the system.

Make sure `opensc` package is up to date. I am using Macports to install utilities/libraries and other command-line utils.
```
$ sudo port upgrade opensc
```

usptact

$ gst-launch-1.0 -e v4l2src device=/dev/video0 do-timestamp=true ! 'video/x-raw, width=640, height=480, framerate=30/1' ! tee name=t \
    t. ! queue ! videoconvert ! autovideosink \
    t. ! queue leaky=downstream ! videoconvert ! x264enc tune=zerolatency speed-preset=ultrafast key-int-max=30 byte-stream=true ! splitmuxsink muxer=mp4mux location=output.mp4

Notes:
x264enc appears to be not playing nice with streams. Removing its options blocks the pipeline. Replacing it with vaapih264enc works but then splitmuxsink has to be replaced with filesink for some reason...

vaapih264enc enables hardware acceleration on systems with Intel hardware. The plugin is available if you install an extra package: sudo apt install gstreamer1.0-vaapi 

usptact

from sqlalchemy import create_engine, MetaData, Table, Column, Integer, String, Date, insert, select
import datetime

# Create in-memory SQLite engine
engine = create_engine("sqlite:///:memory:", echo=False, future=True)

# Define table
metadata = MetaData()
cities = Table(
    'cities',