Bookbreaker / Overlay — Software Licence
Copyright (c) 2026 Matthew Kerr. All rights reserved.

Version 1.0, 17 August 2026.


WHAT YOU MAY DO

You may download, install and run this software free of charge, on any number
of machines you control, for as long as you like.

You may use it to make money. Placing bets, sizing them, tracking them and
keeping the proceeds are exactly what it is for, and nothing in this licence
limits what you do with your own bankroll or your own winnings. Any profit or
loss is yours.

You may read the source, modify your own copy, and keep those modifications
for yourself.


WHAT YOU MAY NOT DO

You may not redistribute this software, modified or unmodified, in source or
compiled form, to anyone else.

You may not sell it, rent it, sublicense it, or bundle it with something you
sell.

You may not operate it as a service for other people — hosting it, running it
on their behalf, or reselling its output as a product or a subscription.

You may not remove or alter this licence, the copyright notice, or the
provenance labelling in the software's own output.


THAT LAST ONE, AND WHY IT IS HERE

This engine reports where each of its numbers came from: whether a figure was
counted from data or is a stated prior, how many observations sit behind it,
and how stale the inputs are. Those labels are not decoration. A build that
strips them prints the same digits while destroying the only thing that makes
them worth reading, and it would still carry this project's name.


NO WARRANTY

This software is provided "as is", without warranty of any kind, express or
implied, including but not limited to the warranties of merchantability,
fitness for a particular purpose and non-infringement. In no event shall the
author be liable for any claim, damages or other liability, whether in an
action of contract, tort or otherwise, arising from, out of or in connection
with the software or the use or other dealings in the software.

It is a calculator, not advice. It does not know whether a bet is legal where
you are, whether a sportsbook will honour a price, or whether its own priors
apply to your markets. Every figure it prints is conditional on inputs you
supplied and assumptions it labels. Check them.

Gambling carries risk of financial loss. 21+ where applicable. If it stops
being fun, it is not fun — https://www.ncpgambling.org/help-treatment/


ON THIS LICENCE CHANGING

These terms are deliberately narrow, because narrow terms can be widened later
and wide ones cannot be taken back. A future release may be issued under a more
permissive licence; if that happens, it applies to that release forward.
Whatever you have already downloaded stays licensed under the terms it shipped
with, and nothing here is revoked retroactively.

For any permission this licence does not grant, ask: mattkerr09@gmail.com