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xrpl.nfts.backfill_residual_holes
Backfill coverage disclosure: ~95.6% of 2,958,523-ledger range covered — 2,194,433 observed with NFT activity + ~635,090 legitimately empty of NFT tx; ~129,000 residual holes (Clio 503 windows) are the counted-as-missed portion
yellow
Public-infrastructure dependent OR no independent cross-check path yet. Free-tier only until Batch B walker migration lands (post-soak, ~2026-08-31) and/or an independent verification walker is wired for this series.
What this claim says
- label
- Backfill coverage disclosure: ~95.6% of 2,958,523-ledger range covered — 2,194,433 observed with NFT activity + ~635,090 legitimately empty of NFT tx; ~129,000 residual holes (Clio 503 windows) are the counted-as-missed portion
- page
- /nfts
- claim id (yaml)
nfts_backfill_residual_holes- behavior
LEGITIMATELY_FLAT- Layer 3 source
self-attested-only
Risk note
Founding-case-shaped disclosure: coverage stat, not headline stat. Denominator = full range (2,958,523 ledgers). Numerator = observed (2,194,433) + legitimately empty (~635,090). Residual holes (~129,000) count as missed. The 129K estimate was derived from stratified sampling of missing ledgers against s2-clio: 16.1% hole-rate in small-delta gaps, 35.7% in large-delta gaps, weighted ~4.4% of the range. All four numbers move together — a fresh sampling round must update the app.py constants + memo + templates + this label in lockstep. If any number moves without that chain, it has become fiction. Denominator ambiguity flagged in ChatGPT audit #4 (2026-08-12); labeling clarified in commit-of-record, math unchanged.
Evidence — code paths that back this claim
- app.py: _NFT_BACKFILL_RANGE_TOTAL_EST / _OBSERVED_EST / _LEGITIMATELY_EMPTY_EST / _RESIDUAL_HOLES_EST / _COVERAGE_PCT
- templates/nfts.html: known-limitations card
- templates/methodology.html: §nft-data-sources
- memory: project_xrpldashboard_nft_backfill_gap_audit_2026-08-10.md