This exploratory supplement tests how much original-versus-phase landmark matching remains after event timing is randomized within one-second bins while retaining local counts. Across six previously exposed people and twelve existing blocks, mean block raw F1 is 0.8477986, the mean block-null median is 0.6634331, and the equal-person mean difference is 0.1843655 at 25 ms tolerance.
The result is descriptive. This null also breaks fine spacing, synchrony and waveform constraints, so the gap does not establish neural origin, semantic meaning or an audio-interference mechanism. The analysis adds no people, recordings or source hours, and does not change earlier Experiment 012/013 endpoints.
The metadata-only EESM19 audit identifies nine remaining ear-only candidate people (108 sessions), or nineteen candidates using ear contacts in PSG sessions (76 sessions). These are unqualified metadata upper bounds. Nine is an attainable significance floor for the prior two-sided exact participant sign-flip test with eight-test Bonferroni correction, not an adequate-power conclusion.
The archive has 98 explicitly selected files, including public derived events, unchanged source receipts, the original scientific runner, and a relocation-only replay adapter. It excludes raw waves, model weights, private EEG/media and vendor correspondence. Offline replay exactly reproduced all twelve scientific rows, all 99 timing draws at each of three tolerances, the person-level summary and the metadata capacity audit. Independent scientific and release reviews accompany the results. Historical candidate/draft labels in frozen receipts are retained deliberately; later review and approval receipts establish acceptance.
Verify the archive and companions against eegt-v0.11.0-SHA256SUMS.txt, then follow the reproduction guide. The bounded replay used 197.085428 CPU seconds and 477,675,520 bytes peak RSS on the recorded runtime. No DOI has been issued for this supplement.