Receipts, not vibes.
The truth layer for prediction markets
See who’s actually good at prediction markets.
Verify any trader’s real record — live from Polymarket and Kalshi. No screenshots, no lies.
What TAIL has read
Sample dataData from Polymarket · Kalshi
The corpus behind every number on this site — open any of it and check the arithmetic.
- fills ingested
- 14
- receipts minted
- 3
- traders tracked
- 8
Who’s good, and what just settled
Sample dataThe board, one receipt and the last three settlements — the same rows every other page here renders, with nothing to sign up for.
Will France win the 2026 World Cup?
TOP 1% · CUP CALLER
+412%
- Position
- YES19¢ → 97¢
- Record
- POLYMARKET · SAMPLE DATA
0x4f2a…e91dCAL 0.71tailtrades.com/r/worldcup-whale-1
What you get
Three beats, no account: look someone up, read the evidence, then follow the ones worth following.
- 1Look up any traderA Polymarket wallet or a TAIL handle. Nothing is signed and no funds move.
- 2See verified receiptsEvery fill re-read from the exchange and priced at VWAP, with the losses beside the wins — never self-reported, never a screenshot.
- 3Follow & get alertsKeep the good ones on a list and hear when they fill or settle, not a week later.
The tools
All three read the same record. What is free stays free — a badge appears only where a tool is Pro at launch or is not built yet.
- ScannerPro · SoonUnusual size, hot streaks and cold runs, ranked as they print.Not built yet — the free account gets you everything that is.
- TerminalProAsk the tape in plain words, with the receipt behind every claim.Pro at launch. Nothing is on sale yet, and the account is free.
- AuditorFreePaste a wallet or a TAIL handle and read the record back, fill by fill.
What it costs
Everything above is free and stays free. One paid tier, one flat price — and nothing on this page is on sale yet.
Free
$0forever
- Search any wallet or handle
- Every profile, every receipt
- The whole leaderboard — no row locked
- Auditor
Pro
$29.99per month · flat forever
- Unlimited follows
- Real-time alerts
- Scanner — not built yet
- Terminal
Prices are set for launch and nothing is on sale — no card is asked for anywhere on this site.
Every tier, in fullQuestions
What people ask before they type an address — answered here, rather than after signing up.
- Do I have to connect a wallet?
- No. An audit is a read: paste an address or a handle and the record is rebuilt from data the exchange has already published. Nothing is signed, no key is asked for, and no funds move.
- Where do the numbers come from?
- Data from Polymarket · Kalshi — every fill re-read from the exchange, priced at VWAP, and a receipt minted only once the market resolves. Nothing on this site is self-reported.
- Are these real traders?
- Not all of them yet. Venue ingestion is not switched on across the site, so some of what you see is illustrative sample data — and it says so where it stands: anything invented is stamped Sample data wherever it is printed, and a row without that stamp is rebuilt from venue data.
- What does it cost?
- Free is $0 forever. Pro is $29.99 per month · flat forever — and nothing is on sale yet, so no card is asked for anywhere on this site.
- Is TAIL affiliated with Polymarket or Kalshi?
- No. TAIL has no relationship with any venue: it reads the same public exchange data anyone else can. The full statement is at the foot of this page.
Free, and no card.
An account is only needed to follow someone or claim a record as yours — looking anyone up needs nothing at all.
Create free account