Prepared from the capture at 2026-10-10T19:20:14.503085+00:00.
The evaluation sample contains four currencies and twenty published observations per currency. All eighty values matched the ECB source in this capture. This validates the selected sample and its transformation; it does not validate complete history, scheduled recurrence or independent adoption.
| Series | Retained-history rows | First retained date | Last retained date | Checked sample |
|---|---|---|---|---|
| ECBFX_USD | 7111 | 1999-01-04 | 2026-10-09 | 20/20 |
| ECBFX_GBP | 7111 | 1999-01-04 | 2026-10-09 | 20/20 |
| ECBFX_JPY | 7111 | 1999-01-04 | 2026-10-09 | 20/20 |
| ECBFX_INR | 4551 | 2009-01-02 | 2026-10-09 | 20/20 |
observation_date identifies the reference date; source_retrieved_at records Seiche collection; sample_captured_at records this evaluator capture. first_available_at is null because the original historical release time has not been reconstructed. These clocks cannot be substituted for each other.
Non-publication days remain absent. A missing observation is not zero and is not forward-filled. A current upstream revision can change a historical row. A model claiming historical knowledge must use an independently verified vintage archive; this sample does not provide one.
The sample is suitable for schema, attribution, unit and current-observation evaluation. Native warehouse sharing, uptime/SLA, full-history parity and point-in-time backtest suitability remain unverified. The next useful check is a second working-day capture and a real analyst review.
Source: European Central Bank. Original reference data is available free from the ECB. Informational reference rates, not executable quotes.
ECB policy: https://www.ecb.europa.eu/services/using-our-site/disclaimer/html/index.en.html
Seiche transforms ECB XML values into dated CSV/JSON rows. Values are not interpolated, inverted or economically adjusted. Preserve the free-source notice wherever accessed and before any payment. This scope covers only the four specified numerical reference series.
Publisher: LIQUILENS PRIVATE LIMITED. Support: mrinal@liquilens.in. Independent of the ECB; no endorsement is implied.