Transaction Science Open Standards
Copyright (c) 2026 Transaction Science, Inc.

This repository contains three open standards. The Apache License,
Version 2.0 at the root applies to:

  openpay/     — the OpenPay reference payment-acceptance stack.

The following subdirectories are licensed differently. See each
subdirectory's LICENSE file for the applicable terms:

  smart-byte/  — Creative Commons Attribution 4.0 International (CC-BY-4.0)
  eoc/         — Creative Commons Attribution 4.0 International (CC-BY-4.0)
  aac/         — reference code Apache-2.0 (aac/LICENSE); specification
                 text CC-BY-4.0 (aac/LICENSE-SPEC); and the language pack
                 DATA in aac/aac-rs/data/lang/ (and any copy an app serves
                 as public/lang/), which is NOT Apache-2.0: each pack is
                 CC BY-SA 4.0 or CC0 1.0 as stated in its header,
                 index.json and aac/aac-rs/data/lang/LICENSE.md, with the
                 attribution given there.

Third-party material under Creative Commons Attribution-ShareAlike 4.0
International (CC-BY-SA-4.0), adapted from Mulberry Symbols, OpenMoji and
Blissymbolics (BCI-AV); attribution and each set's conditions are in
aac/aac-rs/crates/aac-web/public/symbols/LICENSES.md:

  aac/aac-rs/crates/aac-web/public/symbols/*.svg
  aac/aac-rs/tools/symbols/review/*.png
  aac/aac-rs/tools/symbols/mapping-review.md

The wire format and the right to fork are public. Transaction Science
writes the reference implementation and runs the optional hosted
services — the protocols themselves are owned by no one.

See CHARTER.md for the stewardship pattern that applies to every
standard in this repository.