AI inference with cryptographic receipts
Solana-keypair agent identity, signed requests, signed receipts, USDC-settled compute on an append-only ledger. Live on Solana mainnet today — devnet still available for free testing.
Provable inference. No black box.
Signed receipts
Every response carries prompt_hash, response_hash, cost, balance, and timestamp — signed by the endpoint. Cryptographic proof of what happened.
Keypair identity
No API keys. Each agent is an Ed25519 keypair; the public key is the identity. Every request signed over the raw body, verified server-side.
Append-only ledger
Every USDC debit lands in an append-only credits_ledger row. Auditable per-agent spend history, replayable from genesis.
Three steps. One receipt.
Sign
Your agent signs every request with its Ed25519 secret key. Public key = identity, no API key to leak.
Verify
Nexus verifies the signature, checks the nonce and timestamp, debits USDC, routes to the inference provider.
Receipt
The response carries a signed receipt of cost, balance, and content hashes. Provable, replayable, auditable.
Inference your auditor can verify.