# Licensing

Default for this repository: **MIT**, `Copyright (c) 2026 AERE Network`. See `LICENSE`.

The papers, proofs, results and verification records in this repository are MIT. Two groups of
files are not, and both are marked in their own headers. Where a file has its own
`SPDX-License-Identifier`, **that header governs, not the repository default.**

This page was produced by reading the `SPDX-License-Identifier` line of every file in the tree.

## Java sources — Apache-2.0

| File | SPDX |
| --- | --- |
| `precompiles/HashToPointPrecompiledContract.java` | `Apache-2.0` |
| `precompiles/MLKEM768PrecompiledContract.java` | `Apache-2.0` |
| `precompiles/Sp1StarkVerifierPrecompiledContract.java` | `Apache-2.0` |
| `pq-stark/FriQueryIndexSelfTest.java` | `Apache-2.0` |
| `pq-stark/Sp1StarkVerifierKat.java` | `Apache-2.0` |

These are AERE Network's copyright, but they are written to compile inside a Hyperledger Besu tree
and they sit in Besu's own package namespace, `org.hyperledger.besu.evm.precompile`. Besu is
Apache-2.0. Licensing them Apache-2.0 is what makes them usable where they are meant to be used,
and it is what their headers have always said.

## Improvement proposals — CC0

Every file under `aips/`, including `aip-template.md`, ends with:

> Released to the public domain (CC0). No rights reserved.

That dedication stands. It follows the convention Ethereum uses for EIPs, and it is a wider grant
than MIT, so it takes nothing away from a reader of `LICENSE`. It is recorded here because a reader
who sees only `LICENSE` would otherwise not know these documents are freer than the rest.

## What `bench/` is

`bench/AereFalcon512VerifierHTP.sol` is `MIT`, the repository default. It is listed only so the
count below adds up.

## Counts, as measured

| SPDX identifier | Files carrying the header |
| --- | ---: |
| `Apache-2.0` | 5 |
| `MIT` | 1 |

Files without an SPDX header, which is most of this repository, are covered by `LICENSE`, except
the `aips/` documents described above.