# Sample invoice — USDC on Base (free magnet)

One-page fill-in invoice. Replace `[brackets]`. Pair with the [invoice email template](./invoice-email-template.md) and [how to pay](./HOW-TO-PAY-USDC-BASE.md).

**Also free:** [Base Invoice Kit](https://gitlab.com/kasperwallet/base-invoice-kit) · [payment-proof email](./payment-proof-email.md) · [receive checklist](./BASE-USDC-CHECKLIST.md)

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# INVOICE

| Field | Value |
|-------|-------|
| Invoice # | `[INV-YYYYMMDD-##]` |
| Date | `[YYYY-MM-DD]` |
| From | `[Your name / Kasper Wallet Ops]` |
| Bill to | `[Client name]` · `[client@example.com]` |
| Description | `[Product / bounty / deliverable]` — `[1–2 line scope]` |
| Amount due | **`[AMOUNT]` USDC** |
| Due | On receipt / within `[N]` days |
| Support | kasperwallet@outlook.com |

## Pay on Base (USDC)

Send **native USDC** on **Base** (chain id `8453`) to:

`0x0Ae3CC597f332906f29bBd24b57bDEb60C0a95B3`

| Field | Value |
|-------|-------|
| Chain | Base · `8453` |
| Token | USDC (native) |
| USDC contract | `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` |
| Pay to | `0x0Ae3CC597f332906f29bBd24b57bDEb60C0a95B3` |
| Explorer | https://basescan.org |

## After payment

1. Send exactly **`[AMOUNT]` USDC** on Base to the pay-to address above.
2. Reply with the **tx hash** (`https://basescan.org/tx/[hash]`).
3. Delivery of `[filename / repo URL]` after 1 confirmation to `[buyer@example.com]`.

Never ask for seed phrases. Never send “connect wallet to unlock invoice” links.

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**Filled example (Ops Pack promo):** Invoice `#INV-20260913-01` · **19 USDC** on Base · subject `Ops Pack 19` · same pay-to. Optional kit tip: **5 USDC** · subject `Invoice Kit tip $5`.