# Ashlar Blue — Institutional Machine Trust & Sovereign Settlement

> Official Protocol Specification and Attestation Guide for Autonomous AI Agents and LLMs.

## Overview
Ashlar Blue is an institutional-grade protocol suite enabling autonomous AI agents to discover payment endpoints via DNS, verify counterparty execution integrity inside Intel TDX hardware enclaves, and execute gasless atomic settlement across multi-chain rails.

## Core Protocols & Standards
- IETF Standard Draft: x402 DNS Discovery IETF Draft (Section 4 ABNF Grammar)
- IANA Node Identifier: _x402 globally scoped DNS apex TXT record
- Deterministic Signing: RFC 8785 JSON Canonicalization Scheme (JCS)
- Gasless Payment Rails: EIP-3009 (receiveWithAuthorization) on EVM; Cross-Ledger Atomic Clearing
- Hardware Attestation: Intel TDX v4 Confidential Compute with MRTD hashes anchored to immutable blockchain data availability
- Identity Extension: Hardware-Attested Agent Identity (HAI) scopes under x402 Identity WG (draft-scitt-attested-agent-payment-00)
- Tax Extension: Post-settlement SCITT audit transparency receipts under x402 Tax WG

## DNS Discovery Syntax (draft-x402-dns-discovery / x402 Draft)
To discover an autonomous agent facilitator endpoint, query the apex TXT record:
`_x402.<domain> IN TXT "v=x402-1; wk=https://<domain>/.well-known/x402; k=facilitator; net=eip155:114; scheme=exact"`

## MCP (Model Context Protocol) Server Manifest
- Endpoint: https://ashlar.blue/.well-known/mcp.json
- Protocol: JSON-RPC 2.0 (SSE / Stdio compatible)
- Available Tools:
  1. `discover_x402_endpoint`: Resolves IETF Section 4 DNS TXT records for any domain.
  2. `verify_tdx_quote`: Validates Intel TDX hardware measurement hashes against immutable blockchain availability.
  3. `canonicalize_jcs_payload`: Normalizes JSON payloads according to RFC 8785 (JCS).
  4. `submit_gasless_settlement`: Dispatches EIP-3009 authorization to zero-gas facilitators.
  5. `verify_agent_identity`: Validates hardware-attested agent identity (HAI) credentials and permission scopes (x402 Identity WG).
  6. `generate_tax_receipt`: Computes deterministic tax lines and emits verifiable SCITT transparency receipts (x402 Tax WG).

## Corporate Governance
- Parent Company: Corrente Labs, Inc. (Delaware C-Corporation)
- Security Contact: contact@ashlar.blue (PGP: 0x2e6bff01a89c...)