OSINT challenge solve challenge

생성일: 2026년 5월 11일

답변에 사용된 모델 GPT-5.5 Thinking by Chat01

질문

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OSINT challenge
solve challenge

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Final adjustment on W3W and OSM comparison

The W3W location is slightly off by 1.3 meters west from OSM coordinates, but "safe.cheering.riding" works for the OSM location. I’m considering whether to mention hidden metadata pointing to Charlie Jacobs and explore the connection to Belgium, but it’s not directly public. Also, W3W seems confirmed as "safe.cheering.riding."

Thought for 23m 43s

답변

Solved.

The image metadata gives Belgium via the Google Saint-Ghislain data-center location, matching Google’s Belgian data-center/solar site. (Sustainability) The hidden artist value is Charlie Jacobs, which points to Hotel Jacobs in Bruges; the official hotel page lists Hotel Jacobs Brugge at Baliestraat 1, 8000 Brugge. (Hotel Jacobs)

For the exact hotel point, OpenStreetMap’s node for Jacobs gives 51.2146747, 3.2262796. (OpenStreetMap) I interpreted the “language of the country they are really based in” as English, since What3words Limited’s registered office is in London. (find-and-update.company-information.service.gov.uk)

Flag:

text
RMCTF{//safe.cheering.riding-Hotel Jacobs}

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