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Posted on • Originally published at qbitflow.app

QBitFlow Now Supports Base: Ethereum Security at L2 Prices

Today we're announcing support for Base — Coinbase's Layer 2 network built on the OP Stack. QBitFlow merchants can now accept payments on Base alongside Ethereum and Solana.

The short version: same non-custodial security, same API, same 1.5% fee — but gas costs drop from dollars to fractions of a cent.

Why Base Matters for Payments

If you've ever processed a crypto payment on Ethereum, you know the pain. A simple USDC transfer can cost $0.50 to $5 in gas fees. For a $10 product, that's a 5-50% surcharge just to move money — before any processing fees.

Base changes the math entirely.

Ethereum Base Difference
Gas per USDC transfer $0.50 – $5.00 $0.001 – $0.01 ~100x cheaper
Block time ~12 seconds ~2 seconds 6x faster
Security model L1 consensus Ethereum L1 settlement Same security guarantees

Base inherits Ethereum's security through L1 settlement while running transactions at a fraction of the cost. For payment processing, this is the sweet spot: you get Ethereum's trust model without Ethereum's gas bills.

What's Supported

Tokens on Base:

  • USDC (native) — The most widely used stablecoin on Base, with over 8.6 million holders
  • USDT — Tether's stablecoin, bridged to Base
  • WETH — Wrapped ETH for merchants who want to accept ETH-denominated payments

Payment types:

  • One-time payments
  • Subscriptions with spending caps
  • Pay-as-you-go billing

Everything that works on Ethereum and Solana now works on Base. Same SDK, same API, same webhooks.

How to Accept Payments on Base

If you're already using QBitFlow, there's nothing to change. Base appears automatically as an option on your hosted checkout page. Your customers choose their preferred chain and token — the payment goes directly to your wallet.

from qbitflow import QBitFlow

client = QBitFlow(api_key="your_api_key")

session = client.one_time_payments.create_session(
    product_name="Premium Plan",
    price=49.99,
    description="Awesome features",
    webhook_url="https://yoursite.com/webhook",
    success_url="https://yoursite.com/success",
    cancel_url="https://yoursite.com/cancel"
)

# Customers see Base as an option on the checkout page
print(session.link)
Enter fullscreen mode Exit fullscreen mode

That's it. No separate integration for each chain. One API call, and your customers can pay on Ethereum, Solana, or Base.

The Cost Comparison Nobody Asked For

Let's run the numbers on a $50 payment:

Processor Merchant Fee Customer Gas Total Merchant Cost
Stripe $1.75 (2.9% + $0.30) $1.75
PayPal $1.79 (3.49% + $0.49) $2.24
BitPay $1.25 (2% + $0.25) $1.25
QBitFlow (Ethereum) $0.75 (1.5%) ~$2.00 $0.75
QBitFlow (Base) $0.75 (1.5%) ~$0.005 $0.75
QBitFlow (Solana) $0.75 (1.5%) ~$0.001 $0.75

With QBitFlow, the merchant always pays 1.5% flat — that's it. Gas fees are paid by the customer as part of the transaction, just like any on-chain transfer.

On Base and Solana, gas is negligible for customers too — under a cent per transaction. On Ethereum, gas is higher, which is exactly why L2 support matters.

The result: merchants pay less than half of what Stripe charges, and nobody can freeze your funds, reverse your payments, or shut down your account.

The Timing

We won't pretend the timing is a coincidence.

Coinbase shut down Commerce on March 31, 2026. Over 8,000 merchants lost their crypto payment processor overnight. The replacement — Coinbase Business — is custodial, requires KYC, and only works in the US and Singapore.

One week later, QBitFlow deploys on Base — Coinbase's own Layer 2.

Non-custodial. Global. No seed phrases. No deplatforming risk.

If you're one of those 8,000 merchants looking for a new home, we built one. And it runs on the same chain Coinbase built.

Three Chains, One Philosophy

QBitFlow now supports three chains, each with different strengths:

Ethereum — Maximum security and liquidity. Best for high-value transactions where settlement guarantees matter most.

Solana — Fastest confirmations and lowest absolute fees. Best for high-frequency, lower-value payments.

Base — Ethereum's security model at L2 prices. Best for merchants who want the Ethereum ecosystem without the gas costs.

The philosophy stays the same across all three: non-custodial, open-source smart contracts, funds go directly to your wallet. We don't touch your money. We just make it easy for your customers to send it to you.

What's Next

Base is our first L2, but it won't be the last. We're evaluating Arbitrum, Polygon, and Optimism based on merchant demand and ecosystem maturity.

We're also working on x402-compatible payment infrastructure for AI agent transactions — but that's a post for another day.

For now: if you're building on Base, accepting payments just got a lot simpler.

Get started: qbitflow.app
API docs: qbitflow.app/docs/api
GitHub: github.com/QBitFlow


QBitFlow is non-custodial crypto payment infrastructure. 1.5% flat fee. No withdrawal fees. No chargebacks. Ethereum, Solana, and Base supported.

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