Financial Commerce Infrastructure
Pay with crypto.Keep your holdings.
Issue virtual Visa cards funded from isolated spend balances, lock checkout rates
for 15 minutes on digital transactions, and reconcile every balance against an immutable ledger.
Issue virtual Visa cards funded from isolated spend balances, lock checkout rates
for 15 minutes on digital transactions, and reconcile every balance against an immutable ledger.
Standard crypto cards liquidate your assets at point of sale, triggering taxable events and unexpected conversion fees. Chaen isolates card spending to pre-funded USD and USDC balances so your primary vault remains completely untouched.
Authorizations clear at exact local fiat parity. Transactions will never decline at the terminal due to sudden 2% market dips during clearance.
Network congestion and intra-block price swings shouldn't disrupt payments. Chaen guarantees your exact conversion quote for 15 minutes across verified digital products, settling without slippage or underpayment errors.
Institutional research covering cross-venue market depth, stablecoin flows, and derivative funding rates.
Production Python execution client featuring WebSocket orderbook reconstruction and automated rebalancing.
Cryptographic signature verification, replay prevention, and idempotency middlewares for financial APIs.
Inspect liquidity depth, technical structures, and on-chain metrics across major trading pairs. Upload chart captures or query live order books by voice, with strict architectural boundaries ensuring account credentials and balances never enter conversational context.
Every deposit, authorization hold, and merchant settlement records across balanced debit and credit legs. State transitions execute atomically, preventing fractional reserves and unauthorized balance mutations.
| Account Name | Role | Asset | Debit | Credit |
|---|---|---|---|---|
| Customer Spend Pocket | card_subaccount | USD | 50.000000000000000000 | — |
| Segregated Card Hold Reserve | card_hold_reserve | USD | — | 50.000000000000000000 |
| Zero-Sum Balance Proof | Σ Debits: $50.00 | Σ Credits: $50.00 | ||
Calculates asset balances to full token precision, eliminating rounding discrepancies and residual dust across transactions.
Card spending allocations remain partitioned from primary vault custody until point-of-sale settlement confirmation.
Multi-legged ledger operations succeed or roll back as single database transactions, guaranteeing zero orphaned entries.
Access digital content and public market tools immediately with standard credentials. Verification requirements scale strictly with financial surface area, unlocking payment cards and banking rails only when requested.
Immediate access with email or WebAuthn passkey.
KYC-cleared virtual card issuance and expanded volume.