How PSICph is built and verified

PSICph treats official Philippines source layers as the starting point. The PSA publication layer defines the classification structure, the practical workbook layer powers lookup and hierarchy reconstruction, and the BIR layer adds registration context where that context is useful to users.

Companion classifiers such as PSOC, PSCC and PSGC are handled the same way: official source first, practical navigation second, and no invented certainty where the source data is incomplete.

Pages are built at compile time from checked data files. The templates combine hierarchy, code titles, summary explanations, related codes, FAQ, source notes and trust blocks. The site does not depend on a live database to answer standard lookups.

• Only verified fields are rendered
• Missing data causes the relevant block to disappear
• Source-backed numbers are not replaced with estimates
• Titles and descriptions are written to be useful to users first

A page is considered verified when its code, title, hierarchy position and source note are supported by the current official layer used in the build. Crosswalks, risk score, professions and related code blocks are only shown when the corresponding data file contains real evidence.

The dedicated risk-score page documents the 7-factor model used on leaf pages. If the evidence file is missing or incomplete, the score block is omitted rather than guessed.

Open risk-score methodology

If a source changes or a page is found to be unclear, the fix is to update the underlying data and rebuild the affected pages. The site prefers explicit source notes and correction paths over silent edits.

When a source conflict exists, the page should explain the conflict, not smooth it away. That is important for a regulated reference site where users need to know what is official, what is editorial, and what is only a navigational aid.