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$ curl -X POST https://verification.didit.me/v3/transactions/ \
-H "x-api-key: $DIDIT_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"wallet_address": "0xRecipient...",
"currency": "ETH",
"direction": "OUTBOUND"
}'{ "risk_score": 87, "severity": "CRITICAL" }// Your endpoint receives a signed wallet-screening result
app.post("/webhooks/didit", (req, res) => {
const sig = req.headers["x-signature-v2"];
const expected = crypto.createHmac("sha256", SECRET)
.update(req.rawBody).digest("hex");
if (sig !== expected) return res.sendStatus(401);
const { status, decision, txn_id } = req.body;
// status: APPROVED | IN_REVIEW | DECLINED | AWAITING_USER
res.sendStatus(200);
});{ webhook_type: "transaction.status.updated", status: "APPROVED" }# Didit Wallet Screening (KYT) — integrate in 5 minutes
You are integrating Didit's Wallet Screening / Know Your Transaction (KYT)
module into <my_stack>. Follow these steps exactly. Every URL, header,
and enum value below is canonical — do not paraphrase or "improve" them.
Wallet Screening produces a standardised risk payload regardless of
which underlying provider sits behind it:
- Risk score 0-100 + severity (LOW, MEDIUM, HIGH, CRITICAL)
- Source of funds breakdown across 14+ categories
- Exposure table (counterparty entities, direct vs indirect hops)
- Network graph metrics
- Sanctions / darknet / mixer flags as discrete signals
## 1. Provision an account
- Sign up: https://business.didit.me (no credit card required).
- Or provision programmatically: POST https://apx.didit.me/auth/v2/programmatic/register/
## 2. Choose a screening source
- Wallet Screening runs at $0.15 per check on Didit's own on-chain
risk data — nothing to configure, it works out of the box.
- Or bring your own screening provider and run it inside Didit: open
Transactions > Settings > Provider Preferences in the Business
Console (https://business.didit.me) and paste your existing
provider API key. The screening result payload is identical
whichever source you use.
## 3. Two integration paths — pick one
### Path A — Workflow / Transactions API (recommended)
Best when you want Wallet Screening chained into the Transaction
Monitoring rules engine so flagged transactions automatically generate
review cases.
POST https://verification.didit.me/v3/transactions/
Headers:
x-api-key: <your-api-key>
Content-Type: application/json
Body (outbound pre-transfer screen, screens the destination wallet):
{
"transaction_id": "withdrawal-001",
"transaction_category": "finance",
"include_crypto_screening": true,
"transaction_details": {
"direction": "OUTBOUND",
"amount": "0.25",
"currency": "ETH",
"currency_kind": "crypto",
"action_type": "withdrawal"
},
"subject": {
"entity_type": "individual",
"vendor_data": "user-123",
"full_name": "John Doe"
},
"counterparty": {
"entity_type": "unhosted_wallet",
"full_name": "John Doe",
"payment_method": {
"method_type": "crypto_wallet",
"account_id": "0xRecipientWallet..."
}
}
}
Direction rules — required:
- INBOUND pre-transfer -> screens counterparty.payment_method.account_id
- INBOUND post-transfer -> screens the tx hash scoped to subject.payment_method.account_id
- OUTBOUND pre-transfer -> screens counterparty.payment_method.account_id
- OUTBOUND post-transfer -> screens the tx hash scoped to counterparty.payment_method.account_id
For post-transfer screening, also include
transaction_details.payment_reference_id -> the blockchain tx hash
### Path B — Standalone wallet-screening API
Best when you want a one-off wallet-risk lookup without writing a full
transaction. Same screening source, same $0.15 per check price.
POST https://verification.didit.me/v3/transactions/
Headers:
x-api-key: <your-api-key>
Content-Type: application/json
Body:
{
"wallet_address": "0xRecipientWallet...",
"currency": "ETH",
"direction": "OUTBOUND"
}
Synchronous JSON response — no webhook required for the standalone call.
Use Path A whenever the screening result needs to flow into the rules
engine, case management, or the auto-remediation loop.
## 4. Webhooks
Register one webhook destination per workspace:
POST https://verification.didit.me/v3/webhook/destinations/
Body: { "url": "https://yourapp.com/didit/webhooks",
"events": ["transaction.status.updated"] }
Every delivery carries an X-Signature-V2 Hash-based Message Authentication
Code (HMAC) header. HMAC-SHA256 verification MUST run against the raw body bytes (the raw payload as Didit sent it) BEFORE any JSON parsing — re-serialising the parsed body changes whitespace and key order, which invalidates the signature.Verify it before trusting the payload:
signature = hmac_sha256(secret, raw_body).hex()
if signature != request.headers["X-Signature-V2"]:
return 401
## 5. Reading the result
Every screening returns a standardised risk object:
- risk_score (0-100, higher = more exposure)
- severity ("LOW", "MEDIUM", "HIGH", "CRITICAL")
- source_of_funds (array of { category, percentage })
- exposure (array of { entity, hop_distance, received, sent, risk })
- flags (array including "sanctioned", "darknet_market", "mixer",
"ransomware", "child_exploitation", "scam", and others)
- network_graph (nodes, edges, centrality, depth)
Feed flagged transactions into the Transaction Monitoring rules engine
so high-risk hits automatically generate cases at the published
$0.02 per transaction inspection rate.
## 6. Travel Rule (FATF Recommendation 16)
For Virtual Asset Service Provider (VASP) to VASP transfers, include
the Travel Rule payload alongside the transaction body:
"travel_rule": {
"originator_vasp": {...},
"beneficiary_vasp": {...},
"originator": { "full_name", "date_of_birth", ... },
"beneficiary": { "full_name", "wallet_address" }
}
Didit handles the structured-message exchange with supported counterparty
VASPs. Reference: https://docs.didit.me/transaction-monitoring/travel-rule
## 7. Hard rules — do not change
- Base URL stays https://verification.didit.me (NOT apx.didit.me).
- Auth header stays x-api-key (lowercase, hyphenated).
- Webhook signature header stays X-Signature-V2 (NOT X-Signature).
- currency_kind is always "crypto" for wallet screening.
- direction is always UPPERCASE ("INBOUND" or "OUTBOUND").
- severity casing stays UPPERCASE: LOW, MEDIUM, HIGH, CRITICAL.
## 8. Pricing reference
- $0.15 per wallet screening on Didit's own on-chain risk data — or
bring your own screening provider and run it inside Didit.
- $0.02 per transaction inspected by the Transaction Monitoring rule
engine. AML on flagged transactions at $0.20 per check.
- 500 free verifications every month on every account, forever.
- No minimums, no contracts. Volume discounts above 100k screenings
per month — see https://didit.me/pricing.
## 9. Verify your integration
1. Create a sandbox API key at https://business.didit.me.
2. Post the example outbound transaction above against a known-flagged
tutorial wallet — the response should have severity "CRITICAL" and
carry a "sanctioned" flag.
3. Confirm the webhook fires with transaction.status.updated and the
X-Signature-V2 header verifies cleanly.
4. Open Case Management in the console — the transaction should land
in the queue with source PROVIDER and severity CRITICAL.
Done. Wallet Screening is live. Reach out to support@didit.me with the
workspace id if you hit a wall.$0 / месяц. Кредитная карта не требуется.
Платите только за то, что используете. Более 25 модулей. Публичные цены за модуль, без минимальной ежемесячной платы.
Индивидуальные MSA и SLA. Для больших объемов и регулируемых программ.
Начните бесплатно → платите только за выполненные проверки → переходите на Enterprise для индивидуального контракта, SLA или размещения данных.
Didit is infrastructure for identity and fraud, the platform we wished existed when we were building products ourselves: open, flexible, and developer-friendly, so it works as a real part of your stack instead of a black box you integrate around.
One API covers verifying people (KYC, know your customer), verifying businesses (KYB, know your business), screening crypto wallets (KYT, know your transaction), and monitoring transactions in real time, on a stack built to be:
The footprint underneath: 14,000+ document types in 48+ languages, 1,000+ data sources, and 200+ fraud signals on every session. The Didit infrastructure dynamically learns from every session and gets better every day.
Wallet Screening, also called Know Your Transaction (KYT), assesses on-chain risk on a crypto wallet address or transaction hash. Sanctions exposure, darknet markets, ransomware wallets, mixers, stolen-funds counterparties, scam wallets, terrorist financing, surfaced as a risk score, a severity tier, a source-of-funds breakdown, and discrete flags you can route on in real time.
$0.15 per check screened end to end inside Didit, or bring your own screening provider and run it inside Didit on the same /v3/ Application Programming Interface (API) contract, with unified casework and audit.
Full reference: docs.didit.me/core-technology/wallet-screening/overview.
$0.15 per check screened end to end inside Didit, one public price, no separate analytics contract to manage.
If you already have a screening provider you prefer, you can bring your own screening provider and run it inside Didit, paste your provider key into the Business Console, every screening Didit dispatches uses your key, and the screening counts against your existing provider contract.
No minimums, no contract, no overage surprises. Switch between modes per workspace at Transactions → Settings → Provider Preferences.
The full flow normally takes under 30 seconds end-to-end, pick up the ID, snap the document, snap the selfie, done. That is the fastest in the market. Legacy KYC providers usually take more than 90 seconds for the same flow.
On the back end, Didit returns the result in under two seconds at p99, measured from the moment the user finishes the selfie to the moment your webhook fires. Mobile capture is tuned for slow phones and slow networks: progressive image compression, lazy software development kit load, and a one-tap hand-off from desktop to phone via QR code if the user starts on web.
A standardised payload regardless of which provider sits behind it.
risk_score, 0–100, higher means greater exposure.severity, LOW, MEDIUM, HIGH, CRITICAL.source_of_funds, breakdown across 14+ categories (sanctioned wallet, terrorist financing, child exploitation, ransomware, stolen funds, darknet markets, mixers, scams, high-risk exchanges, gambling, regulated exchanges, peer-to-peer, unidentified services).exposure, counterparty entities with direct vs indirect hop distance, plus received and sent amounts.network_graph, centrality and depth metrics.flags, discrete signals like sanctioned, darknet_market, mixer, ransomware.Same shape lands inside the Transaction Monitoring response.
Every session lands on one of seven clear statuses, so your code always knows what to do:
Approved, every check passed. Move the user forward.Declined, one or more checks failed. You can allow the user to resubmit the specific failed step (for example, re-take the selfie) without re-running the whole flow.In Review, flagged for compliance review. Open the case in the console, see every signal, decide approve or decline.In Progress, user is mid-flow.Not Started, link sent, user has not opened it yet. Send a reminder if it sits too long.Abandoned, user opened the link but did not finish in time. Re-engage or expire.Expired, the session link aged out. Create a new session.A signed webhook fires on every status change, so your database always stays in sync. Abandoned and declined sessions are free.
Production data is processed and stored in the European Union by default, on Amazon Web Services. Enterprise contracts can request alternative regions for jurisdictions whose regulators require it.
Encryption everywhere. AES-256 at rest across every database, object store, and backup. Transport Layer Security 1.3 in transit on every API call, webhook, and Business Console session. Biometric data is encrypted under a separate Customer Master Key.
Retention is yours to control. Default retention is indefinite (unlimited) unless you configure shorter, between 30 days and 10 years per application, and you can delete any individual session at any time from the dashboard or the API.
Certifications: SOC 2 Type 1 (Type 2 audit in progress), ISO/IEC 27001:2022, iBeta Level 1 Presentation Attack Detection (PAD), and a public attestation from Spain''s Tesoro / SEPBLAC / CNMV that Didit''s remote identity verification is safer than verifying someone in person. Full report at /security-compliance.
Didit ships compliant by default for the regulators that matter to identity infrastructure:
Detailed memo, every certificate, every regulator letter: /security-compliance.
Three integration paths, pick whichever fits your stack:
Same dashboard, same billing, same pay-per-success price for all three. Step-by-step guide at docs.didit.me/integration/integration-prompt.
Единый API для KYC, KYB, мониторинга транзакций и проверки кошельков. Интеграция за 5 минут.