Tax-Ready NFT Receipts
for Crypto Payments

Apocha (from Greek "receipt") is a service that generates tax-compliant NFT receipts for cryptocurrency transactions on Solana. Each receipt is minted as a compressed NFT (cNFT) containing all the metadata required for CARF (Crypto-Asset Reporting Framework) compliance, including DTIF codes, transaction types, and jurisdiction information. Our receipts are designed to meet global tax reporting standards including the US 1099-DA requirements.

x402 is a payment protocol designed for the agentic economy - enabling AI agents and applications to pay for API calls programmatically. When you request a receipt, you receive a 402 Payment Required response with payment details (amount, wallet, network). Your application sends a USDC payment transaction, then retries the request with the transaction signature in the X-Payment header. Ownership is verified via the payment itself - no interactive wallet signing required.

Yes! Transactions with an amount under $1 USDC do not require payment. This free tier is designed to support micropayments and the x402 ecosystem. The receipt NFT is still minted with full tax compliance metadata.

CARF (Crypto-Asset Reporting Framework) is the OECD's global standard for crypto tax reporting, adopted by 50+ countries. Our receipts include all CARF-required fields: asset name, DTIF code (Digital Token Identifier), gross proceeds, transaction date, wallet addresses, and transaction type. For US users, this also satisfies 1099-DA requirements (effective 2026).

Receipts must be minted within 48 hours of the original transaction. This ensures receipts are contemporaneous records created near the time of the transaction, which strengthens their validity for tax and compliance purposes. Retroactive receipt generation for old transactions is not supported.

Each receipt attribute is marked with its source. Chain-verified data (amount, wallets, timestamp, token) is fetched directly from the Solana blockchain and cannot be falsified. Self-reported data (service type, invoice ID, description) is provided by the user for convenience but is not verified by Apocha. This distinction is clearly marked in the receipt metadata.

Your privacy is a priority. The on-chain NFT includes a Domestic_Sale boolean (true/false) for tax classification, but no specific country codes are stored in the NFT metadata. We detect payer jurisdiction via IP at transaction time - these details (actual country codes) are stored in our private database and only accessible to sellers for tax reporting. Payers never see location data in their wallet. This approach gives sellers the tax compliance info they need while protecting payer privacy on-chain.

Your receipt data is preserved in three places: (1) The NFT metadata on Arweave is permanent and immutable - it exists forever even if the NFT is burned. (2) Our database maintains a record of all minted receipts, preventing duplicate minting and enabling receipt lookup. (3) The original blockchain transaction is always verifiable. If you burn your NFT, you cannot mint another receipt for the same transaction.

Pay-per-use charges 0.1% of the transaction value (min $0.10, max $5) via x402 micropayment. Transactions under $1 are free. Subscriptions ($49/month or $400/year) give you unlimited receipts with no per-receipt fee. Subscriptions are tied to your wallet address and checked automatically when you include the X-Wallet-Address header in your requests.

Compressed NFTs use Solana's state compression via Metaplex Bubblegum to store NFT data in a Merkle tree, reducing on-chain storage costs by over 99%. This allows us to mint receipts for approximately $0.0005 in network fees while maintaining full NFT functionality. Metadata is permanently stored on Arweave via Irys, ensuring your receipts exist forever.

Absolutely! Our REST API is designed for easy integration. Use the /mint endpoint to create receipts, /verify to check transactions, and /wallet to retrieve receipt history. With a subscription, your application can generate unlimited receipts for your users. Check the API documentation for details.

We support all major tokens with registered DTIF codes for accurate tax reporting. This includes stablecoins (USDC, USDT, PYUSD, DAI), major cryptocurrencies (SOL, ETH, BTC, and their wrapped versions), and popular DeFi tokens (JUP, RAY, ORCA, JTO, BONK). For tokens without a registered DTIF code, we generate a unique identifier based on the token address.