// appeal infrastructure
Your filter flagged someone. Now what?
Most Sybil-detection vendors sell a score. Almost none of them sell what happens after a real contributor gets caught in it. SybilShield's public appeal endpoint, 48-hour response policy, and append-only audit log work standalone — you can point flagged users at it even if your primary filter isn't SybilShield's own scoring.
The gap
When a distribution flags real users, teams improvise. CARV's own public post-mortem on their airdrop's Sybil detection offered flagged accounts two paths: a manual re-review via Nansen (“may take about four to eight weeks”), or a third-party KYC process (“approximately two to four weeks”) — both ad hoc, both assembled after the fact, neither a product anyone could point to in advance.
Source: CARV's own public statement, cited as an example of the industry gap — not a claim about any vendor's detection accuracy.
What SybilShield gives you, standalone
Public appeal endpoint
POST /v1/appeals — no API key required. Anyone can dispute a flag on their own wallet.
48-hour response policy
Every appeal is acknowledged within 48 hours — a stated SLA, not “we'll get to it.”
Immutable audit log
Every appeal and every reversal writes an append-only row to evidence_audit_log — exportable via GET /v1/audit-log.
Free, no vendor lock-in
No account required to submit an appeal. No dependency on SybilShield being your primary scoring system.
Using it alongside a different filter
If your primary Sybil filter is a competitor's scoring, an in-house script, or a manual review — link your flagged users straight to /appeal. They submit their case, you get an audit-logged, timestamped record you can point to if the decision is ever disputed publicly. It costs nothing and doesn't require adopting SybilShield's scores.
curl -X POST https://api.sybilshield.org/v1/appeals \
-H 'content-type: application/json' \
-d '{
"address": "0x...",
"chain": "ethereum",
"reason": "Owned this wallet since 2019, active Snapshot voter, funded from my own CEX withdrawal."
}'Get started
The appeal form is live and public — no setup, no account, no cost.