Observed arrival · 2026-09-16
MeltLedger Checks the Paper Trail Behind Steel
A certificate-review tool that extracts heat numbers, grades, and origin claims from mill test certificates and links each result back to the source PDF.
Field notes
MeltLedger separates suggested extraction from reviewer confirmation and leaves unsupported fields unresolved rather than treating them as facts. Its example uses a steel certificate with heat number H-008419 and shows why a stated manufacturing country does not establish melt-and-pour origin. Reviews can be compared against shipment references and exported as CSV, evidence JSON, and source files. The site states that PDFs may contain up to 10 pages and 10 MB.
Observed signals
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Editorial observations of this landing page, not a rating.
One card from the complete issue