sicher.halowerk.com/v1/provenance-verify

caution grade B x402 endpoint Base found on x402scan found on CDP Bazaar confidence 0.60
https://sicher.halowerk.com/v1/provenance-verify

As of 2026-08-15, sicher.halowerk.com/v1/provenance-verify on Base held a flawless 100.0% uptime across 65 reliability checks since first seen 2026-08-12 (3 days). Responses came back moderate at 241 ms average from a single EU vantage point (so this includes network distance to the endpoint) and it has held its advertised price steady at $0.0050. Its x402-trust grade is B (score 71.7 from a moderate sample, tracked for 3 days), so it warrants caution before relying on it.

Advertised descriptionSearches the Sigstore Rekor log for entries matching an artefact hash and returns what a provenance claim is actually worth: the log index and inclusion time, the signing identity from the certificate, and where available the source repository and workflow reference that produced it. Several entries for one hash are all returned, because a rebuild or a second signer is a fact worth seeing rather than collapsing.(Provider-supplied: an unverified claim, not checked by us. The trust grade above is our independent measurement.)
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Cached snapshot, computed 26 hours ago. This is the full-density trust score computed from every probe, same as the paid API... but it may be up to 24 hours old. For a guaranteed-current answer it re-probes the endpoint live at the moment you ask, adds a confidence band, the full component breakdown, structured risk flags and on-chain settlement proof:
Browser wallet payment, no code required. Agents use POST /v1/x402-trust or the x402_trust_score MCP tool.
30-day uptime
100.0%
Avg latency (EU)
241 ms
moderate · from EU vantage
Confidence
0.60
full-density score
Advertised price
$0.005
USDC
Price stability
Stable
last 30 days
Probes (30d)
65
full record · up to 48/day

Latency is measured from a single EU vantage point; includes network round-trip distance to the endpoint; a geographically distant endpoint reads slower even when its server is fast, so it is only lightly weighted in the score.

↑ 10 better alternatives available

10 better-scored (some cheaper) endpoints serving a semantically similar purpose exist.

We don't reveal which ones here. The ranked list (resource URLs, exact scores, prices & similarity, etc...) is one paid call away. Purchase it right here with a browser wallet, no code required:

A wallet payment page opens first; approve the USDC payment and the ranked JSON list loads right in your browser. Agents use the x402_find_alternatives MCP tool or POST /v1/similar directly.

Full observation record ▾
Trust gradeB (score 71.7)
Recommendationcaution
Confidence0.60, full-density (every probe in the 30-day window)
30-day uptime100.0%
Avg latency (EU vantage)241 ms
Probes (30d)65
Advertised price$0.005 USDC
Price stability (30d)stable
Networkeip155:8453
First seen2026-08-12
Last probed2026-08-14
Statuslisted
Snapshot computed2026-08-14 15:37 UTC
This is the free cached snapshot. Here's what the paid API adds.
  • ✓
    Live probe at decision time:
    We re-check the endpoint the moment you ask (timestamped) and compute the score from all scores up until this moment, instead of this cached snapshot that may be up to 24h old.
  • ✓
    Confidence band, full component breakdown & structured risk flags:
    Exactly why the score is what it is, machine-readable.
  • ✓
    On-chain settlement proof:
    Real USDC volume & distinct-payer count for the payTo wallet: is anyone actually paying it?
  • ✓
    90-day raw history:
    Every listing/price/payTo change and probe result (via POST /v1/x402-history), up to 90 days back.
  • ✓
    The ranked better-scored alternatives:
    The resource URLs, scores & prices we don't reveal above (via POST /v1/similar), if there are better alternatives available.
  • ✓
    Change & liveness alerts:
    Get notified on payTo/price changes, spec regressions or downtime (via POST /v1/watch-endpoint-30d). Connect up to 10 Discord / Slack webhooks or poll regularly with bearer auth. Increases probe-density to every 5 minutes instead of the usual 30 for the watched endpoint.

... Simply give your agents the tools to do all of that for you, with a simple command
$npx -y x402-trust-mcp

Prefer HTTP? Call POST /v1/x402-trust directly (pay-per-call over x402, from $0.005).