xka0085

On-chain delivery receipts for x402 payments on Solana. After an x402 settlement, ReceiptRail anchors a SHA-256 digest of the delivered content into a public PDA, so a buyer agent, auditor or regulator can independently prove what was delivered - offline, zero trust in the seller. Tools: issue_receipt (pay-per-receipt 0.001 USDC), verify_receipt, get_receipt, verify_x402_receipt (official x402 offer-receipt extension). Remote MCP endpoint: https://agenttoll-receipts.app.workbuddy.host/mcp - also