itemtradegroupfromnpc.dbss
Binary layout, empty-table framing, byte coverage, and exact snapshot evidence for the itemtradegroupfromnpc.dbss decoder in calpheonlabs.
Investigation status
| Status | Value |
|---|---|
| Coverage | 100% |
| Iteration | 3 |
| Review state | BSD migration reconciled |
| Last reviewed | 2026-07-31 |
| Captures examined | Build 2938; installed pad00000.meta SHA-256 b7eefe6059818f84c0545f10020fe93bd3bd5d0647e043120caf78726ccafe8f; 4-byte primary SHA-256 df3f619804a92fdb4057192dc43dd748ea778adc52bc498ce80524c014b81119; zero rows; normalized SHA-256 11bb2244d3693b19ebad11e18bc0fa9fe58b818cd6e21c9e5b19eccc9dbefda2 |
| Decoder | packages/scraper/src/tables/itemtradegroupfromnpc.dbss.ts |
| Remaining blockers | None |
See Decoder methodology for the confidence scale and evidence rules.
Field ledger
| Field/path | Offset and width | Representation | Claimed meaning | Physical confidence | Representation confidence | Semantic confidence | Evidence | Status |
|---|---|---|---|---|---|---|---|---|
recordCount |
+0, 4 (entire file) |
retained u32().is(0) |
Empty captured table count | Certain | Certain | Certain | Both payload and offset files are exactly four zero bytes; strict decode rejects trailing bytes | Closed |
Active assumptions
Findings
| ID | Finding | Evidence | Schema/documentation impact | Status |
|---|---|---|---|---|
| ITGF-01 | No non-empty row grammar is present in the capture. | The complete file contains only the required zero count | Decoder intentionally supports only the physically proven representation | Closed |
| ITGF-02 | The BSD output exactly matches the complete reference output. | Normalized SHA-256 11bb2244d3693b19ebad11e18bc0fa9fe58b818cd6e21c9e5b19eccc9dbefda2 |
No offset dependency or compatibility adapter exists | Closed |