About this site
Sources, cadence, and the lines this site does not cross.
Melt Value Check computes what the metal in U.S. coins is worth. One person maintains it; everything on it is arithmetic from public inputs, and this page is the complete list of them.
Sources
- Gold and silver spot: Swissquote's public quote feed (best bid/ask mid for XAU/USD and XAG/USD), fetched at build time. Fallback: COMEX front-month futures closes via Yahoo Finance, labelled when used.
- Copper: COMEX front-month (HG=F) in USD per pound, via Yahoo Finance.
- Nickel and zinc: IMF global monthly benchmarks via FRED (PNICKUSDM, PZINCUSDM), used only on the base-metal pages and labelled monthly.
- Coin specifications: U.S. Mint published weights and fineness - constants, recomputed and cross-checked on every build.
- Price history: ten years of weekly and six months of daily closes via Yahoo Finance, cached against outages.
Update cadence
The site rebuilds several times each trading day; every page carries the exact price and UTC timestamp it was computed from. If a source fails its integrity checks, the previous build stays live - this site never renders partial or stale-labelled-as-fresh data.
What this site does not do
No appraisals, no dealer quotes, no buy/sell recommendations, no price predictions, no affiliate links to bullion dealers. Melt value is a floor computed from public numbers; what a coin actually sells for is between you and a market.
Contact
Corrections and questions: contact@meltvaluecheck.com.