Crypto infrastructure for on ramps and payments

Every LP you integrate brings its own REST or WebSocket API, its own quote format, its own settlement window (anywhere from seconds to T+2), and its own failure behavior when volume spikes. Provider A returns rates in basis points while Provider B uses absolute spreads. One settles in USDC, another in USDT, a third only in EURC. When a provider goes down mid transaction, you need instant failover without double spending or orphaned orders. Stitching this together with custom glue code does not scale past two providers.

The solution includes a normalized LP abstraction layer that maps every provider to a single interface for quoting, execution, and settlement confirmation. The routing engine selects the optimal provider per transaction based on spread, settlement speed, stablecoin preference, and provider health score. Failover logic replays incomplete transactions against the next available provider while the reconciliation service tracks both attempts. You add new LPs by writing an adapter, not by rewiring your payment flow.

A EUR corridor into Nigeria has completely different KYC document requirements, AML screening thresholds, and transaction limits than a USD corridor into the Philippines. When you expand to a new market, you discover that your verification vendor does not cover that country's ID types, your sanctions screening misses the local watchlist, and your transaction monitoring rules trigger false positives because the thresholds were set for a different region. Most payment platforms treat compliance as a single global layer and pay for it every time they enter a new corridor.

The architecture includes a compliance engine where every rule, threshold, document requirement, and screening source is parameterized by jurisdiction and corridor. KYC flows dynamically select the right verification provider and document set for the user's country. AML screening queries the correct sanctions lists for both the sending and receiving jurisdictions. Transaction monitoring applies corridor specific limits and velocity checks. Adding a new market means updating a configuration set, not rewriting compliance logic.

A user sends USD through your platform. Your fiat processor confirms the debit. The LP converts to USDC. The on chain transfer confirms three blocks later. Now you have a transaction represented in three separate systems with three different timestamps and three different reference IDs. If any leg fails silently, you discover the mismatch hours or days later when someone runs a batch report. By then, the user has already filed a support ticket and your ops team is manually tracing the flow across dashboards.

The solution includes a reconciliation engine that ingests events from your fiat processor, LP settlement callbacks, and on chain transaction receipts into a single transaction graph. Matching runs continuously, not in overnight batches. The moment any leg of a transaction goes unmatched beyond its expected settlement window, the system flags it, classifies the exception type, and routes it to the right team. Your operations dashboard shows real time payment flow health across every corridor, not a spreadsheet you hope is current.