Mandatory Attribution Notice:
Engineered under the DTLMF Architecture Blueprint. Original Concept and Intellectual Property © 2025–2026 Solomon Brokerage OÜ (Tallinn, Republic of Estonia). Sole Founder & Strategic Architect: Alejandro De La Parra Solomon. Licensed under MIT / CC BY 4.0.
DISCLAIMER:
DTLMF operates strictly as a voluntary B2B trade finance enablement utility outside the mandatory B2A platform certification scope of Regulation (EU) 2020/1056 Articles 11–13.
This repository provides architectural specifications and cryptographic routines for multi-chain data interoperability, client-side envelope encryption, Merkle batch anchoring, and bi-directional cross-chain relaying between Polkadot Substrate Layer 1 compliance ledgers and Arbitrum Layer 2 EVM financial clearing rollups.
This interoperability framework synchronizes the production DTLMF execution engines:
- Layer 1 Substrate Compliance Core:
polkadot-efti-compliance-core– Substrate FRAME pallets (pallet-did-registry,pallet-efti-anchor-vc) and XCMP KILT dispatchers. - Layer 2 Arbitrum Settlement Engine:
arbitrum-shariah-settlement-engine– AAOIFI-compliant Murabaha, Musharakah, and Takaful EVM settlement contracts. - Client-Side Canonicalizer SDK:
dtlmf-efti-jcs-sdk– Open RFC 8785 JSON Canonicalization Scheme and SHA-256 digest generator. - European Digital Trade Center (CLTD) Portal: https://solomonbrokerage.com/cltd/
+---------------------------------------------------------------------------------------------------+
| Multi-Chain Dualism Architecture |
+---------------------------------------------------------------------------------------------------+
| |
| POLKADOT SUBSTRATE (LAYER 1) ARBITRUM ANYTRUST (LAYER 2) |
| [Regulatory Compliance & Identity] [Financial Clearing & Liquidity] |
| |
| +-------------------------------------+ +-------------------------------------+ |
| | pallet-efti-anchor-vc | | DTLMFSettlement.sol (Murabaha) | |
| | - eFTI Movement State Machine | | - Title Transfer & Escrow Release | |
| | - SHA-256 RFC 8785 Root Hashes | | - Supply-Elastic DAT Token Burn | |
| +------------------+------------------+ +------------------+------------------+ |
| ^ | |
| | v |
| +------------------+------------------+ +------------------+------------------+ |
| | pallet-did-registry | | SubstrateOracle.sol | |
| | - eIDAS SR25519 Verified DIDs | | - Dispute Timelock (6,000 blocks) | |
| | - Pre-Dispatch Sybil Interception | | - Relayer Cryptographic Proofs | |
| +------------------+------------------+ +------------------+------------------+ |
| | ^ |
| +-----------------------+-------------------------+ |
| | |
| v |
| +-----------------------------------------------+ |
| | TypeScript Event Relayer Engine | |
| | - Bi-directional event synchronization | |
| | - WebSocket GRANDPA Finality Listener | |
| | - ECDSA / EIP-712 Settlement Dispatcher | |
| +-----------------------------------------------+ |
+---------------------------------------------------------------------------------------------------+
To guarantee that commercial secrets, pricing terms, and shipper identities are never exposed in plaintext, documents undergo client-side AES-GCM-256 envelope encryption:
[Raw Freight Manifest JSON-LD]
|
v
[Generate 256-Bit Data Encryption Key (DEK)]
|
+--------------------------+--------------------------+
| |
v v
[AES-GCM-256 Encrypt Payload] [AWS KMS / PKCS#11 Hardware HSM]
- Authenticated ciphertext - Encrypt DEK with Key Encryption Key (KEK)
- 12-byte initialization vector (IV) - Returns ciphertext blob of encrypted DEK
- 16-byte authentication tag (GCM) |
| |
+--------------------------+--------------------------+
|
v
[Construct Envelope Object: Encrypted_Payload + Encrypted_DEK + IV + Tag]
|
v
[Generate JCS RFC 8785 Canonical Digest for On-Chain Anchoring]
Authorized customs inspectors or financing institutions receive an unwrap grant allowing their verified DID to request KMS key unwrapping via the Authority Access Gateway (AAG).
For high-frequency logistics corridors generating thousands of consignment movements per hour, individual on-chain anchoring extrinsics introduce unnecessary blockchain state bloat.
The framework employs cryptographic Merkle Tree Batching:
- High-frequency manifest SHA-256 digests form the leaves of a balanced binary Merkle tree.
- Only the 32-byte Merkle Root is anchored to
pallet-efti-anchor-vcin a single Substrate extrinsic. - Individual freight forwarders or customs officers verify individual documents off-chain by generating and evaluating standard
$O(\log n)$ Merkle inclusion proofs against the finalized on-chain root, reducing Layer 1 transaction overhead by up to 1,000x.