Research dataset builder

Define the market. Freeze the information set. Keep the manifest.

Generate the exact API request and reproducibility record for stocks, crypto, bStocks, tokenized securities, or TradFi perpetuals. Nothing is downloaded until you run the authenticated request.

The point-in-time difference

Move the cutoff. Watch tomorrow disappear.

A latest-value API returns the final story at every historical timestamp. DataCedar applies the cutoff before resolving versions, so a backtest sees only evidence that was actually knowable. This event is illustrative; the time semantics are the production contract.

As-of cutoff
16:02ET

Filing accepted

The 8-K becomes public, but normalized facts are not available yet.

GET /v3/stocks/ACME/events
  ?as_of=2026-07-16T16:02:00-04:00

Eligible information set

2 / 4 records

Earnings scheduled after close

event history

known_at 09:14

8-K filing accepted

SEC accession

known_at 16:02

Reported revenue fact

XBRL fact

not knowable yet

Post-release 1m bar

market observation

not knowable yet

Later versions remain stored. They are excluded from this result, not deleted from history.

Dataset specification
Availability note. Full held daily history is archived to R2 as it completes. Public one-minute stock data follows Yahoo's rolling eight-day upstream window.
Reproducible request
DataCedar API v3

Request

curl --request GET \
  --url "https://api.datacedar.com/v3/stocks/AAPL/bars?timeframe=1Day&start=2026-07-13T00%3A00%3A00Z&end=2026-07-20T23%3A59%3A59Z&limit=1000" \
  --header "X-API-Key: $DATACEDAR_API_KEY"

Evidence bundle

https://api.datacedar.com/v3/stocks/AAPL/coverage?timeframe=1Day
https://api.datacedar.com/v3/stocks/AAPL/events
https://api.datacedar.com/v3/stocks/AAPL/fundamentals

Research manifest

{
  "schema_version": "v3",
  "specification_snapshot_at": "2026-07-19T22:36:23.746Z",
  "coverage_snapshot_at": "2026-07-19T22:36:23.746Z",
  "information_cutoff": "latest eligible at request time",
  "dataset": {
    "market": "stocks",
    "native_symbol": "AAPL",
    "source": "yahoo_finance",
    "interval": "1Day",
    "start": "2026-07-13T00:00:00Z",
    "end": "2026-07-20T23:59:59Z"
  },
  "requests": {
    "bars": "https://api.datacedar.com/v3/stocks/AAPL/bars?timeframe=1Day&start=2026-07-13T00%3A00%3A00Z&end=2026-07-20T23%3A59%3A59Z&limit=1000",
    "related_evidence": [
      "https://api.datacedar.com/v3/stocks/AAPL/coverage?timeframe=1Day",
      "https://api.datacedar.com/v3/stocks/AAPL/events",
      "https://api.datacedar.com/v3/stocks/AAPL/fundamentals"
    ]
  },
  "preserve_with_result": [
    "request_id",
    "pagination cursors",
    "coverage state",
    "source",
    "known_at",
    "schema version",
    "raw or export manifest hashes"
  ]
}