IMPACT STUDIO 1.1.1 — EXPORT TRANSPARENCY
Implementation and verification statement, 28 September 2026

Impact Studio records known AI involvement in machine-readable export metadata.
WAV, FLAC and MP3 use signed C2PA Content Credentials. AIFF uses a documented
signed annotation. The app records available model/app identifiers and an
export identifier, and provides local verification without uploading audio.
A free standalone checker requires no Impact Studio licence.

The marking is added after audio encoding and does not change audio samples.
The export and drag-out paths use the same provenance mechanism. Batch exports
include separate reports for the mix and individual layers.

VERIFICATION
A reproducible 64-case test combined 0.1, 0.5, 1 and 4-second DSP noise-impact
fixtures, 44.1/48 kHz, mono/stereo and the four export formats. All 64 marked
files verified, all remained valid after renaming, and all decoded sample
arrays were exactly unchanged by marking. All 64 unmarked controls were
reported as having no supported mark. These controls are not a population-wide
false-positive benchmark. Separate tests cover changed signed records, export
routes, key permissions and exclusion of private filenames and prompts.
Results: https://useimpactstudio.com/provenance/verification-1.1.1.json

TECHNICAL SCOPE
Signatures bind the record to the file and establish integrity. They use a
local installation key, not a centrally certified publisher identity or trusted
time service. Metadata is not an embedded waveform watermark. In the 64-case
processing test, gain changes, trimming and fresh WAV encoding removed the
mark. A missing mark therefore does not establish human authorship. Source
history that is unavailable is recorded as unknown.

This statement documents implemented measures and measured behaviour. It is
not a copyright-clearance certificate or independent legal certification of
complete Article 50 conformity. The technical-feasibility and robustness
assessment must account for the limitations described above.

Schema: https://useimpactstudio.com/provenance/v1.json
Free checker: https://useimpactstudio.com/tools/verify-impact-audio.py
Licence and publisher information: https://useimpactstudio.com/rights