The mismatch
Global trade settles on promises: a letter of credit, a notarised PDF, an inspector's signature, a 60-day net term. Blockchains settle on cryptographic facts that anyone can independently verify. The two languages don't meet.
General-purpose chains were designed for crypto-native primitives like token transfers, swaps, and lending positions, where every input is already digital. The moment you try to push real-world evidence onto them, the costs explode and the auditing trail breaks: a temperature log for a refrigerated container is too heavy to live on-chain, and a PDF certificate of analysis has nowhere to live at all.
EDMA is built for the opposite problem. The chain doesn't store the evidence; it stores the hash of the evidence, the attestations from independent verifiers, and the state transitions that follow. Big files (BL photos, customs paperwork, seal images) live off-chain under access control. Anyone authorised can retrieve them via signed URLs; everyone, authorised or not, can verify the hash matches.
Three design choices
Purpose-built for evidence
Every transaction carries a canonical-JSON dossier (RFC 8785 inspired) representing the real event. The same facts always produce the same byte string and the same hash. One dossier, one hash, one truth.
Anchored to Ethereum
EDMA executes on its own L2 for low-cost throughput; final lineage anchors to Ethereum mainnet via EIP-4844 blobs roughly every 2-10 minutes. Block finality on L2 for operations; L1 for permanence.
Fail-safe by default
If a verification fails, expires, or is revoked, dependent assets freeze automatically. The default outcome under uncertainty is no mint, no settle. Money does not move until reality is verified.
What gets fixed
Gas costs ~$5-50 per operation; meter-readings or inspection certificates uneconomical.
Sub-cent gas for proof mints. Settlement is where EDM fees apply.
Storing PDFs and images on-chain is impossible at scale; teams resort to off-chain URLs that break.
Files live off-chain under access control; chain stores SHA-256 commitments and Merkle roots. Tamper-evident, retrievable, private.
Letters of credit, 30/60/90-day terms, paper-based dispute resolution.
Each milestone (production → inspection → loading → customs → receipt) triggers a verified release of locked stablecoin.
For whom this matters
Importers and exporters stop pre-funding 100% of orders three months before delivery. Funds release at each verified milestone, not on a Bill of Lading photocopy.
Financiers underwrite cash flows backed by evidence-bound events instead of promises. Working-capital risk drops because the data is the same data the operation runs on.
Corporates and auditors get ESG and trade-finance claims they can defend. Audits become review, not reconstruction. Greenwashing risk collapses because every claim is rooted in a verified evidence hash.
Regulators get a machine-readable, immutable lineage from source evidence to settlement. No reliance on PDFs or intermediaries.
