{"tier":"nebula","per_attestation_usd":0.0192,"per_attestation_micro_usdc":19200,"currency":"USDC","chain_id":8453,"settlement_protocol":"x402","contract_floor_usd_per_year":200000,"contract_ceiling_usd_per_year":2000000,"regulatory_basis":"FINRA CAT (Rule 613)","notes":"Post-quantum-ready dual-signed (Ed25519 + ML-DSA-65) Swarm-MAPET BFT consensus envelope per attestation. Annual contract pricing tiers by attestation volume and venue coverage."}