Missing USD-M 1m markPriceKlines and indexPriceKlines rows across multiple symbols

[Ekra0904]

Hello Binance public-data maintainers,

While validating the official USD-M Futures 1-minute mark and index price
archives, I found synchronized missing candle rows across multiple symbols.

Affected data

• Market: USD-M Futures (data/futures/um)
• Data types: markPriceKlines, indexPriceKlines
• Interval: 1m
• Symbols: BTCUSDT, ETHUSDT, XRPUSDT, LINKUSDT, SOLUSDT, DOGEUSDT
• Missing rows: 603 symbol/data-type minutes
  • markPriceKlines: 305
  • indexPriceKlines: 298
• Distinct missing open times: 66
• Contiguous symbol/data-type gap ranges: 48

UTC date	Missing symbol/data-type minutes	Distinct missing open times
2020-01-19	232	29
2020-12-17	288	24
2022-07-12	58	10
2022-07-13	1	1
2024-08-12	24	2

Checks performed

1. Checked 43 affected official monthly ZIP files and verified
   their published .CHECKSUM files.
2. Checked the corresponding official daily ZIP files:
   40 were downloaded with verified checksums and
   4 returned NOT_AVAILABLE.
3. Queried the exact 48 missing ranges through the public
   /fapi/v1/markPriceKlines or /fapi/v1/indexPriceKlines endpoint. Every
   response was the empty JSON array [].
4. Re-ran Binance's own download-futures-markPriceKlines.py and
   download-futures-indexPriceKlines.py scripts at repository commit
   5c7f3197591c0d54d85dc43066226bc4c671d47a for all affected dates. The scripts downloaded and verified
   52 ZIP files, but
   recovered 0 of the 603 missing rows.
5. No interpolation or third-party values were used.

The synchronized gaps include:

• 2020-01-19 13:09–13:37 UTC
• 2020-12-17 07:32–07:55 UTC
• scattered minutes on 2022-07-12 and 2022-07-13
• 2024-08-12 10:02–10:03 UTC

Attachments

binance_usdm_mark_index_missing_minutes.csv
binance_usdm_mark_index_gap_ranges.csv
evidence_manifest.json
official_downloader_probe.json

• binance_usdm_mark_index_missing_minutes.csv: every missing symbol,
  data type, and 1-minute open time
• binance_usdm_mark_index_gap_ranges.csv: surrounding present timestamps,
  archive URLs/statuses/checksums, exact public API URLs, and empty-response
  SHA256 evidence
• evidence_manifest.json: counts and SHA256 hashes for the two CSV files
• official_downloader_probe.json: Binance's official downloader commit,
  request scope, checksum verification, and timestamp-only comparison result

Could you please confirm whether these candles can be recovered and republish
corrected monthly/daily archives and .CHECKSUM files? If the underlying
records are permanently unavailable, an explicit confirmation would also help
downstream users apply a documented missing-data policy.

Thank you.