Developer sandbox (simulation only)
Prototype the moving parts of an on-chain payment flow before you choose a provider: payment requests, invoices, webhook handling and the lifecycle from mempool to finality.
Payment request & QR generator
Build BIP-21 and EIP-681 payment-request URIs on testnets and render them as QR codes in your browser. Simulation only: no funds, no keys, no custody.
Open the sandbox →SIMInvoice builder
Draft an invoice with line items, GST/HST or PST by province and an optional stablecoin equivalent at a rate you enter. Export JSON, CSV or PDF.
Open the sandbox →SIMWebhook payload explorer
Explore illustrative payment-event webhooks (detected, confirming, confirmed, underpaid, expired), then sign and verify them with HMAC-SHA256 locally.
Open the sandbox →SIMTransaction lifecycle visualizer
Step through a payment from request to mempool, confirmations, finality and settlement, including dropped transactions, underpayments and re-organisations.
Open the sandbox →What it does
Builds standard payment URIs and QR codes, invoice JSON with Canadian sales tax, illustrative webhook payloads with HMAC signatures, and lifecycle timelines with failure paths.
What it never does
Create wallets, hold or move funds, connect to mainnet, sign transactions, or collect keys, recovery phrases or personal data. Nothing you type is sent to a server.
What comes next
Take what you learned to a provider’s own test environment, then use the vendor checklist before any live integration.