xrpl.nfts.freshness_stamp

Freshness stamp: 'Live · updated Ns ago' (age of most recent close_time in nft_activity)

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.

Machine-readable status: /claims/xrpl.nfts.freshness_stamp.json or send Accept: application/json on this URL. URI is permanent — safe to cite.

What this claim says

label: Freshness stamp: 'Live · updated Ns ago' (age of most recent close_time in nft_activity)
page: /nfts
claim id (yaml): nfts_freshness_stamp
behavior: CONTINUOUS_WIGGLE
Layer 3 source: self-attested-only

Risk note

If activity-mode walker stops but the page cache holds a value, the stamp will keep ticking up. Coverage handoff to R3 via walker_health(worker='nft_activity_walker'). Any staleness > cadence×3 is a signal, not a fluctuation.

Evidence — code paths that back this claim

app.py:3411-3412 freshness_seconds computed from MAX(close_time)
templates/nfts.html: hero freshness chip

Verify

CLAIMS.yaml on GitHub signed snapshot chain methodology · for AI agents

Sovereignty classification derives from the claim's Layer 3 source per /methodology. Last verified 2026-09-19. This surface is documented in docs/PAID_MACHINE_TIER_DESIGN.md § 3.1.