Protocol reference

Fossa’s Solana program enforces the on-chain rules for offers, bookings, and settlement. The address below is the program ID used by the client. Solscan provides its account details and transaction history.

Instruction data starts with a one-byte opcode followed by its payload. All integers are little-endian; payload offsets exclude the opcode. Account lists use w for writable and s for signer; unmarked accounts are read-only. Payment amounts use six decimal places, and token rates are atomic payment units per million tokens.

Contract reference

• Provider registration — Profile identities, metadata commitments, and admission.
• Model markets — Canonical model accounts, books, and market discovery.
• Offers — Prices, capacity, offer updates, and provider collateral.
• User accounts — User storage, vault authorities, deposits, and withdrawals.
• Orders — Booking generations, order payloads, matching, and expiry.
• Settlement — Usage claims, receipt accumulators, and finalization.
• Disputes — Receipt challenges, dispute cases, and bond-funded refunds.
• Reference — Storage reuse, transaction costs, market initialization, and errors.