OnchainInvoice

Introduction to OnchainInvoice

OnchainInvoice is a tool designed for individuals and small teams who accept cryptocurrency payments but still need clean, defensible fiat accounting. It allows users to invoice in fiat currency and receive payments in crypto, automatically capturing the exact fiat value at the moment of payment. This eliminates the need for manual exchange-rate lookups, spreadsheets, and retroactive reconciliation.

The platform generates accountant-ready, cryptographically signed, tamper-evident receipts for every invoice, ensuring transparency and auditability. It is ideal for those who want the speed and global reach of crypto payments without the complexity of traditional bookkeeping. OnchainInvoice is built on Solana and Ethereum, leveraging the security and reliability of these blockchains to provide a seamless invoicing experience.

Takeaways

• Invoicing in fiat, receiving payments in crypto
• Automatic capture of fiat value at payment time
• Cryptographically signed, tamper-evident receipts
• Eliminates manual exchange-rate lookups and spreadsheets
• Designed for individuals and small teams
• Supports multiple blockchain networks and tokens
• Provides audit-ready documentation for tax and accounting purposes

How OnchainInvoice Works

OnchainInvoice simplifies the process of accepting crypto payments while maintaining clean accounting records. The process involves three main steps:

1. Create Invoice: Users create an invoice in their local currency, adding line items, due dates, and branding. The client receives a professional payment link.
2. Client Pays (Their Choice): Clients can pay using a variety of cryptocurrencies such as SOL, USDC, ETH, and more. The price snapshot is recorded at settlement time.
3. You Get Notified Instantly: Once a payment is detected on-chain, the invoice is marked as paid, and a PDF receipt with the fiat equivalent is generated. This receipt is audit-ready and accountant-friendly.

Core Benefits and Applications

Why This Works

OnchainInvoice is built on the principle of auditability. Every receipt is generated deterministically from on-chain payment data and the documented FX rate at the moment of payment. The receipt is then cryptographically signed to ensure tamper evidence. This ensures that all financial records are accurate, verifiable, and ready for audit.

Key features include:

• Fiat value captured at payment time
• Exchange rate source documented per receipt
• Deterministic receipt generation
• Cryptographic signing and tamper evidence
• Accountant-ready structure