A full-stack payment gateway for 22 coins across 8 networks. HMAC-signed webhooks. Deterministic event IDs. Ed25519 settlement receipts. 0.4% flat on settled volume. No KYC, no custody, no monthly retainer.
// $50 invoice — customer pays in BTC-Lightning or USDT-TRC20. curl https://orbchain.io/v1/payment/invoice \ -H "merchant_api_key: mk_live_…" \ -d '{ "amount": 50, "currency": "USD", "accepted_coins": ["BTC_LN", "USDT_TRC20"] }' // → 200 OK { "track_id": "pay_01JR3K9T…", "pay_link": "https://orbchain.io/pay/pay_01JR3K9T…" }
No. Email and password is the signup. No documents, no verification, no volume gates. Ever. This is a founding principle, not a stage we're at.
Only in transit. Every merchant sits on its own BIP-44 branch — never pooled with other merchants — and OrbChain operates the wallet, so funds that have settled but not yet swept do sit in our infrastructure. The fix is built in: auto-sweep forwards every payment to a cold wallet only you control, and you withdraw on demand — no ticket, no approval, no delay.
0.4% flat on settled volume. That is the entire tariff — no monthly retainer, no signup fee, no per-chain surcharge. Withdraw-fee schedule per chain at /pricing.
HMAC-SHA512 of the raw body, keyed on your webhook_secret, compared in constant time against the HMAC header. Reference code in every major language at /docs#webhooks.
No KYC. Non-pooled per-merchant branches with withdraw-on-demand. Ed25519-signed receipts that verify offline. Deterministic event IDs for true webhook idempotency. Native Lightning. 0.4% flat, not 1–1.5%. Full comparisons at /compare/*.
Email and password. No KYC, no monthly retainer — 0.4% flat on settled volume. The entire tariff.