fx-gap-v2
A reproducible comparison between an applicable UN Operational Rate of Exchange (UNORE) and one named observable reference. The result is decision evidence, not a transaction quote or route recommendation.
Tracked
32 countries
28 currencies
Comparison status
31 comparable
0 unavailable · 1 excluded
Selected-source mix
USDC 18 · USDT 9 · spot 4
Latest calculation 2026-07-13
UNORE is used for applicable agency accounting and transactions. Whether a specific payment is converted at UNORE depends on the organisation, funding instrument and treasury process; the tracker does not assume universal use.
The selected observable reference follows the public best_available policy: USDC, then USDT, then reliable international spot FX. A P2P rate is a retail asking-price proxy. It does not demonstrate an available
institutional quote, completed trade, payout method, fees, volume or compliance outcome.
Rates use local-currency units per USD-equivalent unit. Percentage spread and cents per USD use different denominators and must not be substituted for one another.
Worked example
UNORE 621.53 and selected reference 802.33 produce 621.53 → 802.33 = 29.09% spread, 22.53¢/$, $225,344/$1M. The 29.09% rate spread is not 29.09 cents per dollar.
Published by UN Treasury. The API exposes the effective date separately from the daily calculation date. SOS comparisons are excluded because the published operational rate is not a reliable benchmark for that currency in this dataset.
Collectors request up to 20 returned ads per side from Binance and Bybit. Each platform midpoint uses the buy and sell medians. One-sided observations, fewer than 3 ads in total, or more than 25% symmetric width between the two medians are suppressed. The selected asset rate averages all included Binance and Bybit platform mids; one platform is not silently preferred over the other.
The provider order is ExchangeRate-API, then Open ER-API. Spot is suppressed from the selected comparison when its divergence from usable P2P evidence crosses the reliability threshold. Spot remains an international reference and may not describe an in-country route.
Responses identify metric_version: fx-gap-v2 and selection policy best_available. CSV preserves existing columns and appends the canonical fields.
Scroll horizontally to review every column on a narrow screen.
| Field | Meaning |
|---|---|
| headline_source | Selected source key: usdc, usdt or spot. |
| headline_source_label | Human-readable selected source. |
| headline_rate | Selected observable reference rate. |
| headline_observed_at | Exact contributing observation time where provenance proves it. |
| headline_spread_pct | Rate spread using the UNORE denominator. |
| gap_cents_per_usd | USD-equivalent gap in cents using the reference denominator. |
| gap_per_million_usd | Rounded USD-equivalent difference per USD 1 million. |
| comparison_status | comparable, unavailable or excluded. |
| exclusion_reason | Public reason for unavailable or excluded rows. |
| estimated_value_loss_pct | deprecated compatibility field; do not use for new displays. |
GET /api/fx/rates/{ISO}/provenance lists included and suppressed platform
observations, liquidity status, ad counts, width, provider, timestamp and aggregation method so
a selected rate can be reproduced.
