TECH BRIEF · RAILS & RECON

Follow value from ledger
to network settlement.

Architecture notes for engineers and operators: authorization messages, webhook timing, collateral calls, and where PCI scope usually stops. Iron Sight publishes text only—no SDK downloads, sandbox keys, or live wallet hooks on this domain.

Reference only · Not legal or compliance advice

THE LIBRARY

Three briefs teams bookmark.

Conversion & pricing feeds

How programs source FX, what latency to expect between auth and on-chain sell, and why receipt totals diverge from index prices during volatility.

Webhooks & idempotency

Typical event order from processor to program core, retry semantics, and reconciling partial captures against custodial balances.

Scope & key material

Where PAN data usually lives, what stays in HSM boundaries, and why embedding keys in mobile clients breaks common SAQ paths.

Scope note. Examples are illustrative. Network rules, licensing, and PCI obligations vary by jurisdiction and sponsor bank. Engage qualified counsel before production launch.

FAQ

Operator FAQ

  • Do you host APIs or issue test PANs?

    No. Documentation is static HTML. Integrations happen on vendor or sponsor infrastructure, not this site.

  • Can you review our architecture?

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CONTACT

Docs & privacy.

Payload errors, stale network references, or accessibility issues: [email protected].

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