One API. You parametize each call.
Attestyx is one API. You call it before, during, or after a payment. You indicate which tiers to run. We respond in milliseconds with a verdict, a charge, and a signed receipt. We never hold, route, or transmit the payment. The validation flow and the money flow are separate.
Sign up to first real call in under a day.
- Sign up free.Email and entity name. KYB starts. Sandbox key issued immediately.
- Run unlimited sandbox traffic.Full API surface, realistic fixtures. No clock, no card.
- Pass KYB and get a production key.Most legitimate entities clear in under 24 hours.
- Fund a balance.USDC prepaid, USD prepaid wire, or postpaid invoice with card fallback.
- Make your first real call. First 100 Tier 1 calls per month are free. After that, the meter runs.
The meter runs on every call.
Tier 1 is the price of admission to the network and what makes the cross-network bad-actor registry compound. 39 deterministic, automatable, globally applicable checks. Sub-200ms p95. Signed receipt anchored to CourtChain.
Tier 1 produces a verdict (CONFIRMED, WARN, BLOCK), a category-by-category breakdown, and a signed receipt. Hard block on confirmed sanctions and confirmed bad-actor registry hits. Soft warning with policy-defined override on everything else. Receipt is light, machine-verifiable, and permanent.
When you need depth, opt in per call.
Some payments warrant more than 39 checks. Foundation grants. Regulated payouts. Cross-border high-value transfers. Payments to recipients who have never been seen before on the network. For these, you parametize the call to include Tier 2.
Tier 2 adds the deeper signal layers that round out the full 148-check institutional verification: enhanced beneficial-ownership tracing, deep adverse-media review, financial integrity analysis, governance review, and full operating-posture review. Tier 2 also produces a CREB attestation bundle, the court-portable evidence package admissible under FRE 902(14) and equivalent international frameworks.
Tier 2 is flat-fee. It is reusable: once a recipient has a Tier 2 verification on file, future Tier 1 calls reference the verification without paying for it again. The verification expires after twelve months and can be re-run with a single API call.
See the Tier 2 catalog →For forensic work and active recovery.
Tier 3 is engagement-priced, bespoke, and used in active recovery, regulator response, and complex investigations. Deep on-chain forensics, cluster analysis, litigation review, expert testimony support, recovery evidence packages. Three standard scopes (Small, Mid, Forensic) plus custom scopes negotiated per engagement.
See the Tier 3 scopes →Attestyx never touches money. Pick the mode that fits your workflow.
Authorize-then-execute via banking partner
Use this when you want the validation to be the gating event before the rail releases funds.
- Submit a payment intent through
POST /v1/validate. - If verdict is CONFIRMED or WARN-with-override, response includes a signed authorization payload (Ed25519 + Dilithium-III hybrid).
- Your banking partner executes the payment against the signed authorization.
- Banking partner posts settlement back via webhook.
- Receipt is finalized. CREB bundle generated if Tier 2 was requested.
We never see the money. We sign the integrity check. The bank moves the funds.
Pay-then-attest
Use this when you pay through your own rails and want to attach the validation evidence afterward.
- You pay the recipient through your own bank, ACH, wire, SWIFT, RTP, FedNow, SEPA, or crypto rail.
- Call
POST /v1/validatewith payment metadata (rail, transaction reference, settled timestamp), tiers, and recipient details. - We run the validation. Receipt is generated. CREB bundle if Tier 2.
Mode B is what most fintechs and processors use for high-volume async traffic. Mode A is what foundations and treasury teams use when validation must gate the disbursement. Both modes produce identical CREB output.
Attestyx sits underneath your existing payment workflow.
We are built to add to what you already use, not replace it. We integrate with:
- Card and acquiring: Stripe (Connect, Issuing, Treasury, Direct), Adyen, Worldpay, Fiserv, Global Payments
- Issuer-processors:Marqeta, Galileo, Lithic, Highnote
- Banking and BaaS:Cross River, Column, Increase, Mercury, Brex Treasury, Modern Treasury
- Networks:Visa Direct, Mastercard Send, RTP, FedNow, ACH, SWIFT, SEPA SCT and SCT Inst
- Crypto rails:USDC and major stablecoins on the leading chains
- Grant management:Fluxx, SmartSimple, Foundant, Submittable, GivingData, Bonterra
- ERP and AP:SAP, Oracle, NetSuite, Workday, custom internal systems via REST API and webhooks
Most customers are running real traffic in under 24 hours.
Every call makes every other call smarter.
Every Tier 1 call contributes anonymized signals back to the cross-network bad-actor registry, which makes every other call on the network smarter. This is a network effect, and it is the reason Attestyx gets more accurate the more it runs.
Customer privacy is enforced cryptographically. Recipient-level signals are never disclosed to other customers. Aggregate signals (a recipient appears on the bad-actor registry, a recipient has been flagged across multiple foundations, a wallet cluster has shown high mixer exposure) are shared.
Read the registry →Free to start. The meter runs at scale.
- Free Forever. Unlimited sandbox. First 100 Tier 1 calls per month free. Unlimited reads of bad-actor registry and sanctions tables.
- Tier 1 meter. 5 bps of transaction value, $0.25 minimum per call. Volume discounts kick in at scale.
- Tier 2.Flat-fee per recipient or per disbursement.
- Tier 3.Engagement-priced.
No annual minimum. No commitment. No percentage of payment volume in Tier 2 or Tier 3. No contingency on recovery. Cancel anytime.