Provenance Record

Clear, careful science News piece (642 words) that distinguishes the demonstrated result from the speculative applications and is appropriately hedged about what the reachable coverage does not reveal.

All 3 snapshots read from disk (source-1 Phys.org came via Archive.org fallback). ScienceDaily (s0) confirms verbatim all four quotes — Chi Li ('Until now, we could generate or detect these signals … create, route and read this information with very high precision'), Kaijian Xing ('We employ a straightforward stacking approach …'), Haoran Ren ('This is a significant step toward scalable, chip-based technologies …'), and Maier ('This is an important step toward fully integrated valleytronic systems …') — plus the 2D-materials/metasurfaces stacking method, the author roles, AND the full paper citation with title 'An on-chip programmable valley optoelectronic nanocircuit' and DOI 10.1038/s41566-026-01916-0. Phys.org (s1) confirms the Nature Photonics publication, the 'two different images simultaneously' demonstration, and Ren's ARC Future Fellow / NanoMeta and Maier's Head-of-School descriptions. The Quantum Insider (s2) confirms the 'valley degree of freedom' framing, the room-temperature operation, and the author names with lead/co-first/senior roles.

Every quote is verbatim and every specific is accurate. ONE attribution error: the quote-marked paper title 'An on-chip programmable valley optoelectronic nanocircuit' is attributed to The Quantum Insider, but that string appears in the ScienceDaily release (with the DOI and full author list), not in the cited Quantum Insider article. The title is correct and verifiable; only its source label is wrong. The author names/roles in the same sentence ARE carried by The Quantum Insider. The 'two separate images' wording is an out-of-quotes paraphrase of Phys.org's 'two different images' — acceptable.

Substantively accurate, fully-quoted science piece with a single recoverable citation error. APPROVE_WITH_CORRECTIONS.