Bag DocsFinance
Payment Methods
Stablecoins and card payments supported by Bag.
Payment Methods
Bag supports two payment methods: stablecoin (USDC) and credit/debit cards. Merchants can enable one or both.
Stablecoins (USDC)
USDC is the primary stablecoin accepted across all Bag payment flows.
Supported Networks
| Network | Token Standard | Confirmation Time | Typical Gas Fee |
|---|---|---|---|
| Base | ERC-20 | ~2 seconds | < $0.01 |
| Polygon | ERC-20 | ~2 seconds | < $0.01 |
| Ethereum | ERC-20 | ~12 seconds | $1–5 |
| Solana | SPL | ~400ms | < $0.01 |
How Stablecoin Payments Work
- Customer selects USDC and their preferred network at checkout
- Bag generates a payment address or smart contract interaction
- Customer approves the USDC transfer from their wallet (MetaMask, Coinbase Wallet, Phantom, etc.)
- Bag monitors the blockchain for confirmation
- Once confirmed, the transaction is finalized and a webhook is sent
KYT Screening
All stablecoin transactions undergo real-time KYT (Know Your Transaction) screening for AML and sanctions compliance. Flagged transactions are held for review. See KYT & AML Screening for details.
Card Payments
Supported Card Networks
| Network | Coverage |
|---|---|
| Visa | 200+ countries |
| Mastercard | 200+ countries |
| American Express | 130+ countries |
How Card Payments Work
- Customer enters card details at checkout
- Bag processes the payment through our card infrastructure
- Authorization and capture happen in real time
- Settlement follows standard card network timelines (1–3 business days)
Compliance
Bag handles all card payment compliance:
- PCI-DSS — Card data is processed in our PCI-compliant environment; it never touches your servers
- 3D Secure — Supported for additional fraud prevention where required
- Chargeback management — Bag absorbs chargeback liability as the Merchant of Record
Choosing a Payment Method
| Consideration | Stablecoins (USDC) | Cards |
|---|---|---|
| Settlement speed | Minutes (on-chain confirmation) | 1–3 business days |
| Transaction fees | Network gas fees (< $0.01 on L2s) | 2–3% + processing fee |
| Chargeback risk | None (blockchain finality) | Yes (managed by Bag) |
| Customer reach | Crypto-native users | Broad consumer audience |
| Geographic coverage | Global (non-sanctioned jurisdictions) | Card network coverage |