16-Chain Finality & Reorg Engineering · Risk SLA Planner

Block Confirmation & Finality SLA Calculator.

Model exact confirmation counts, end-to-end webhook latency, and reorg safety policies across all 16 XPayr blockchain rails based on your invoice ticket size and fulfillment risk profile.

🛡️ Zero-Conf Risk Engine 🌐 Explore All 16 Networks 🔔 Polling vs Webhooks 🟢 Live RPC Status

1. Select Blockchain, Order Value & Risk Posture

2. Recommended Confirmation Policy & Webhook SLA

Recommended Confirmations 1 Finalized Checkpoint
On-Chain + Webhook SLA ~1.5 – 3.0 sec
Finality Architecture Deterministic DAG
Total Buyer Wait (incl. Source) ~3 sec
XPayr Risk Engine Policy JSON 

        

    


    

        

            FAQ
            
Questions about block confirmations & finality SLAs

        

        

                            

                    
Why do Sui, Aptos, XRPL, and Circle Arc finalize faster than probabilistic PoW/EVM chains?

                    
Deterministic BFT/DAG consensus protocols (Sui Mysticeti ~400ms, Aptos Block-STM <1s, Circle Arc ~1s, XRPL 3.5s) finalize transactions irreversibly on ledger close without multi-block reorg windows, making them ideal for instant POS and API fulfillment.

                

                            

                    
How does XPayr scale confirmation requirements by invoice ticket size?

                    
Low-ticket digital goods (<$100) can fulfill rapidly on fast L2 soft-confirmations or Bitcoin mempool risk-scoring (/developers/zero-conf-risk-engine), whereas high-ticket B2B wholesale or luxury orders ($10,000+) automatically wait for finalized L1/checkpointed blocks before firing payment.completed.

                

                            

                    
How fast does XPayr poll RPCs and block explorers for Direct Exchange QR transfers?

                    
XPayr runs redundant multi-provider RPC listeners and 6-second explorer verification cycles, emitting signed HMAC-SHA256 webhooks as soon as the chain finality threshold is satisfied.

                

                            

                    
Should our backend fulfill orders on payment.pending or payment.completed?

                    
Show an instant "Payment Detected — Confirming on-chain" UI state on payment.pending, and unlock downloadable goods, credits, or server provisioning strictly on payment.completed or payment.underpaid_accepted (/developers/status-vs-webhooks).