League of Traders API integration (leaderboards, copy trading, multi-exchange OpenData)

Leaderboard ingestion

Pull the public leaderboard at configurable intervals — minute-level for the final week of a competition, hourly the rest of the month. Each row carries trader handle, profit rate, follower count, and a privacy flag (some traders hide everything except profit rate and token names). Used to drive sponsor leaderboards, "trader of the month" widgets, and ROI back-tests.

Follower notification fan-out

Mirror the in-app real-time notification a user receives when a followed trader opens or closes a position. The captured event includes symbol, side, size, leverage (where available), and timestamp. Pipe it into your alerting bus, a Slack webhook, or a copy-trade router that re-issues the order on your own exchange account.

Portfolio & token distribution

For traders who keep their profile public, expose the same token distribution and current positions the app shows on the trader profile screen. Standardised into a JSON schema so a downstream OLAP can compute concentration, sector tilt, or correlation against your own book.

Cross-exchange balance reconciliation

League of Traders already accepts read-only API keys for Binance, Bybit, BitMEX, Coinbase and Bitget. We deliver an integration layer that re-uses that key material (with explicit user consent), reads the same balances directly, and produces a reconciled "true balance" so exchange downtime never leaves the dashboard stale.

News & community timeline

The in-app timeline carries posts, competition updates, and editorial news. Convert it into an RSS / JSON feed for your trading desk's morning brief, or fan it into a research index alongside CoinMarketCap and CoinGecko streams.

PRO subscription gate

Subscriptions are pre-paid, non-refundable, and tied to a user's billing cycle. We can wrap that lifecycle in a clean entitlements API so your B2B customer dashboard sees a single "is_pro" boolean, the renewal date, and dedicated-IP routing flags without re-implementing the IAP receipt logic.

Auth handshake (mobile-style OAuth + device binding)

POST /api/v1/lot/session
Content-Type: application/json
X-Device-Id: <UUID>
X-App-Build: 3.3.0

{
  "email": "trader@example.com",
  "password_hash": "<argon2id>",
  "captcha_token": "<optional>"
}

200 OK
{
  "access_token": "...",
  "refresh_token": "...",
  "expires_in": 3600,
  "pro": false,
  "linked_exchanges": ["binance","bybit","coinbase"]
}

Leaderboard snapshot

GET /api/v1/lot/leaderboard?window=30d&page=1&size=50
Authorization: Bearer <ACCESS_TOKEN>

200 OK
{
  "snapshot_at": "2026-05-09T08:00:00Z",
  "window": "30d",
  "rows": [
    {
      "rank": 1,
      "trader_id": "u_8412",
      "handle": "alpha_kiwi",
      "roi_pct": 312.4,
      "pnl_usd": 481200.55,
      "followers": 5934,
      "token_top3": ["BTC","ETH","SOL"],
      "private_profile": false,
      "pro": true
    }
  ],
  "next_page": 2
}

Trade-event websocket (follower stream)

WS /api/v1/lot/stream?topic=trader.u_8412
Authorization: Bearer <ACCESS_TOKEN>

← {
    "type": "trade.open",
    "trader_id": "u_8412",
    "venue": "binance.futures",
    "symbol": "BTCUSDT",
    "side": "long",
    "size": 0.85,
    "leverage": 5,
    "entry_price": 64210.4,
    "ts": 1747900132511
  }

Portfolio reconciliation (multi-exchange)

POST /api/v1/lot/portfolio/reconcile
Authorization: Bearer <ACCESS_TOKEN>

{
  "user_id": "u_8412",
  "venues": ["binance","bybit","coinbase","bitget"],
  "as_of": "2026-05-09T00:00:00Z"
}

200 OK
{
  "true_balance_usd": 482039.10,
  "discrepancies": [
    {"venue":"bybit","delta_usd":-128.55,"reason":"funding-fee-in-flight"}
  ],
  "positions": [ ... ]
}

// Errors follow RFC 7807 problem+json:
// {"type":"https://errors.openfinance-lab.com/rate-limited","status":429,"retry_after":12}

Regulatory alignment

Crypto data flows that touch EU users fall under the EU Markets in Crypto-Assets Regulation (MiCA). We map exposed fields to the ESMA standardised JSON schema for orders and trades, attach Travel Rule sender/receiver context where transfers are involved, and observe the CASP transition window that runs through 30 June 2026. For US-resident data we follow FinCEN guidance on virtual-asset service providers and apply GDPR-style data-minimization for any EU end-users captured through follower lists.

Privacy by design

League of Traders already lets a user mark a profile private, in which case only profit rate and token names are visible. Our integrations honor that flag — private profiles never leak position sizes or balance figures to a downstream caller. Read-only exchange API keys are stored encrypted at rest, scoped to the smallest required permission set, and rotated on a schedule. Consent records (who allowed what, when, for which scopes) are written to an append-only log so an audit can reconstruct any data flow.

About OpenFinance Lab

We are an independent studio focused on App interface integration and authorized API integration. The team has shipped protocol-analysis and OpenData work for fintech, payment, and exchange clients across Asia, the Middle East, the EU, and the Americas, and we deliver runnable source code that survives in production rather than slideware.

• Crypto exchanges, copy-trading apps, and OpenFinance gateways
• Mobile protocol analysis on Android and iOS, including TLS pinning
• Custom Python / Node.js / Go SDKs and signed webhook clients
• Full pipeline: protocol analysis → build → validation → compliance review
• Source code delivery from $300 — runnable API source code and full documentation; pay after delivery upon satisfaction
• Pay-per-call API billing — call our hosted endpoints and pay only per call, no upfront cost; ideal for teams that prefer usage-based pricing

Contact

Send us the target app and the data you actually need (leaderboard rows, follower events, portfolio snapshots). We respond with a scope and a quote, usually within one business day.

Open contact page

Engagement workflow

1. Scope confirmation: which surfaces (leaderboards, copy-trade events, portfolios) and which exchanges.
2. Protocol analysis and API design (2–5 business days, complexity-dependent).
3. Build, sandbox testing, and replay of historical leaderboard windows (3–8 business days).
4. Documentation, sample clients, and an automated test pack (1–2 business days).
5. Typical first delivery: 5–15 business days; multi-exchange copy-trade pipelines may extend timelines.

FAQ

What inputs do you need to start a League of Traders integration?

How long does the first delivery take?

How do you stay compliant with crypto rules like MiCA?

Can you pull historical leaderboard or follower data?