Provenance Record

Well-structured News piece (Overview / What We Know, broken into four clearly headed subsections / What We Don't Know) at 723 words, within the 400-1200 range for News. Neutral, technically precise prose appropriate for a software-release story; no filler or padding.

Verified sha256 of all 4 decompressed snapshots against manifest.json (all matched, all status_code 200, no archive_fallback, no suspicious_patterns on any source). Read all 4 in full: source-0.html.gz (OpenShot's own blog, 'OpenShot 4.0: Record, Edit, and Color Like Never Before', Jonathan Thomas, Aug 30 2026) — confirms the Recording View (mic/screen/webcam/system audio, each kept as a separate editable file/clip), the Color View and Color Grade effect (exposure/contrast/temperature/tint/highlights/shadows/saturation/vibrance, global/shadow/midtone/highlight wheels, 4 editable curves, .cube LUT support with blend intensity, fully keyframable), Luma Waveform/Histogram/RGB Parade/Vectorscope with skin-tone reference line, the exact list of 10 new effects, the Object Mask feature's use of YOLO/EfficientSAM/Cutie models converted to ONNX running locally with the verbatim quote 'There is no cloud processing requirement, no AI account, and no AI subscription', Object Detection's YOLOv5 ONNX support, the native Qt timeline replacing web-based components with the verbatim quote 'OpenShot 4.0 completes the move away from the old web-based timeline components' and editable ruler timecode, the benchmark figures (Blur 61.8% faster, Sharpen 12.8%, timeline rendering 3.4%/5.1% with transforms) and the audio-visualization FPS claims, libopenshot/libopenshot-audio both reaching 1.0.0, the Qt6/PySide6 modernization framing ('improves compatibility with newer Linux distributions... lays groundwork for Android and other future platforms'), the Android-foundations-but-not-a-supported-platform-yet caveat, and the GPLv3 license. source-1.html.gz (Phoronix, 'OpenShot 4.0 Released In Adapting Video Editor UI To Qt6', Michael Larabel, Aug 30 2026) — confirms the verbatim quote 'The main change with OpenShot 4.0 and warranting the bump from OpenShot 3.5.1 is that the Qt6 toolkit is now being utilized' and that OpenShot 4.0 'was tagged this afternoon on GitHub'. source-2.html.gz (LinuxIac, 'OpenShot 4.0 Video Editor Released with Built-In Screen Recording', Bobby Borisov, Aug 31 2026) — independently confirms the same 10-effect list, X11/Wayland/PipeWire recording support, the native-timeline claim, and the verbatim 'this processing runs locally' description of Object Mask. source-3.html.gz (NotebookCheck, Anubhav Sharma, Aug 31 2026) — confirms 'the first major version since 3.5.1 in April', GPLv3 licensing, Windows/macOS/Linux availability, and independently corroborates the Object Mask model list (YOLO, EfficientSAM, Cutie) and the color-grading/timeline feature set. No hallucinated quotes, no misattributions, and no unsupported specifics found across any of the four sources; every direct quote in the article appears verbatim in its cited source and every numeric claim (benchmark percentages, FPS figures, version numbers) traces to the OpenShot snapshot.

Every claim in the headline, summary, body, and 'What We Don't Know' section traces to and is corroborated by the cited source snapshots. No fabrications detected.

APPROVE. All four sources were read in full, sha256-verified against the manifest, and cross-checked against every claim, quote, benchmark figure, and specific in the article; nothing was found unsupported, misattributed, or fabricated. The lone automated finding (openshot.org missing from the source allowlist) was investigated and determined to be a config gap, not an editorial defect — the domain is the software project's own official announcement channel and every claim sourced to it is independently corroborated elsewhere in the source set. No corrections record is warranted.