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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:

• Fast, sub-2-second p99 on every session
• Reliable, in production with 1,500+ companies across 220+ countries
• Secure, SOC 2 Type 1, ISO 27001, GDPR-native, and formally attested by Spain's financial regulator as safer than verifying someone in person

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.

Proof of Address is exactly what it sounds like, evidence that the person you're onboarding actually lives at the address they claim. The conventional artefacts are:

• Utility bill, electricity, gas, water, internet, mobile contract
• Bank statement, from a regulated bank, with the user's name and address on it
• Government letter, tax demand, council letter, voter registration
• Lease or mortgage agreement, signed contract for the address

Why regulators care: an address on file is the anchor for anti-money-laundering record-keeping, tax-residency reporting (FATCA / CRS), and the legal jurisdiction of any future enforcement. A typed self-attested address is unverifiable; a Proof of Address backed by a recent document + a cross-check against the ID is the standard. Didit ships the full recipe for $0.20 per check.

Three reasons regulators consistently reject self-attested addresses:

• Fraud, anyone can type any address. Mules and synthetic identities use this routinely to spread the same address across many opened accounts.
• No audit anchor, when the regulator audits the file, there's nothing to point to. A signed Proof of Address is the artefact you can put in the audit pack.
• Tax-residency reporting, under FATCA and the OECD's Common Reporting Standard, banks have to report account-holders' tax residency based on documentary evidence. A typed address doesn't qualify as documentary.

The Proof of Address recipe, capture, OCR, cross-check, registry validation, produces a regulator-grade artefact in under five minutes on the user's phone. $0.20 per check end-to-end.

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.

If you stop at "upload your utility bill", a determined attacker can:

• Photoshop the address on a bill belonging to someone else
• Reuse a bill from a previous tenant at the same address
• Submit a bill from a different person at the same address
• Submit an expired bill (from before they moved)

The Didit recipe catches all four by stacking three layers of validation on top of the OCR:

• Name cross-check, the name on the bill has to match the name on the ID
• Address cross-check, the address on the bill has to match the address on the ID (or the previous Approved address)
• Registry validation, the address is looked up against the country's authoritative address registry (UK Royal Mail PAF, Spain Catastro, France BAN, Germany DATEV, US USPS, etc.)

All three run server-side. The agent never sees a raw upload, only the validated result.

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 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:

• GDPR + UK GDPR, controller / processor split, full Data Processing Agreement published, lead supervisory authority named (Spain''s AEPD).
• AMLD6 + EU AML Single Rulebook, 1,300+ sanctions, politically exposed person, and adverse-media lists screened in real time.
• eIDAS 2.0, EU Digital Identity Wallet aligned; reusable-identity ready.
• MiCA (Markets in Crypto-Assets), ready for crypto on-ramps, exchanges, and custodians.
• DORA, Digital Operational Resilience Act, EU financial-services operational resilience.
• BIPA, CUBI, Washington HB 1493, CCPA / CPRA, US biometric privacy (Illinois, Texas, Washington) and California consumer privacy.
• UK Online Safety Act, age-gating and child-safety obligations.
• FATF Travel Rule, originator and beneficiary data on crypto transfers, IVMS-101 interoperable.

Detailed memo, every certificate, every regulator letter: /security-compliance.

• 60 seconds to a sandbox account at business.didit.me, no credit card.
• 5 minutes to a working verification through Claude Code, Cursor, or any coding agent via our Model Context Protocol (MCP) server.
• A weekend to a production-ready integration with signed-webhook verification, retries, and a remediation flow when a user is declined.

Three integration paths, pick whichever fits your stack:

• Embed natively with our Web, iOS, Android, React Native, or Flutter SDK.
• Redirect the user to the hosted verification page, zero SDK.
• Send a link by email, SMS, WhatsApp, or any channel, zero front-end work.

Same dashboard, same billing, same pay-per-success price for all three. Step-by-step guide at docs.didit.me/integration/integration-prompt.

Most regulators want the Proof of Address document to be dated within the last 90 days at the moment of verification, anything older is treated as stale on the assumption that the user might have moved since.

Didit's OCR reads the document date and checks it against the verification timestamp automatically:

• Within 90 days → within_90_day_window: true → proof passes the recency check
• Older than 90 days → within_90_day_window: false → session flips to In Review and the user is prompted to upload a more recent document

For low-risk customer segments you can configure the workflow to extend the window to 180 days, or drop it to 60 days for high-risk segments. The configuration is per workflow, not per session, so changes apply uniformly. UK Right to Rent uses 90 days; EU AML guidance generally accepts 90-180 days depending on the supervisor.

Most regulators ask for the address on file to be re-confirmed periodically:

• Low-risk customers, every 3 years is typical
• Standard customers, every 1-2 years
• High-risk / EU-PEP customers, annually
• On material event, significant transaction pattern change, address change reported by the customer, new product onboarded

Didit's refresh is the same POST /v3/session/ against your Proof-of-Address workflow with the existing customer's vendor_data. The new document supersedes the previous one in the customer file; both are kept in the audit trail. Schedule the refresh from your customer-data pipeline, Didit doesn't auto-trigger refreshes because the cadence belongs to your risk policy.

Most KYC providers price Proof of Address between $0.50 and $2.00 per check, often as a separate line item on top of a higher KYC base, with per-country surcharges for any registry validation. The Onfido / Jumio / Veriff archetype.

Didit's published price is $0.20 per Proof of Address + $0.15 for the underlying ID Verification (required as the cross-check anchor) = $0.35 for the combined recipe. Database Validation adds variable per-country cost, typically $0.05-$0.20. No floor, no minimum, no per-country surcharge.

That's roughly 3-5× cheaper than the incumbent stack on the same regulatory output. At a 50,000-user month, the saving versus a $1.50-per-POA incumbent is around $65,000 per year. Full pricing at /pricing.