Agroasys (Agri Operations and Systems) is a B2B marketplace that coordinates agricultural commodity trade, matching suppliers/aggregators with buyers and handling the operational rails: logistics coordination, quality checks, documents, and trade execution. We have built the “Web2 coordination layer,” but settlement is still stuck in bank rails (SWIFT, LCs, manual compliance), creating a major trust and speed bottleneck.
We are requesting $56,000 to build the Agroasys Web3 Layer on Polkadot Asset Hub: a non-custodial settlement engine that uses escrow + Ricardian contracts and settles in native USDC, enabling delivery-versus-payment style trade execution, without forcing enterprises or individuals to become crypto experts. USDC is natively issued on Asset Hub , and we aim to be early practical testers of PolkaVM (RISC-V) for complex trade logic that is costly/rigid on traditional EVM stacks.
We are an operational B2B trade coordination marketplace in the agri-commodity sector. In practical terms, we:
The Global agricultural value chains represent massive annual revenue opportunity, for example, the African Development Bank’s “Feed Africa” strategy highlights annual revenue opportunities around ~US$85B in selected value chains by 2025 (often rounded to the low/mid-$80B range).
Yet the sector still runs on a fragile split between:
International commodity trade suffers from a structural mismatch:
The industry often resolves this with Letters of Credit (LCs) and bank intermediation, effective but expensive and slow. LC issuance and related costs are typically percentage-based and can range roughly around ~0.75%–5%+ depending on structure/country risk, with additional costs for confirmed LCs and amendments.
Commodity trades aren’t “send money, done.” They include:
This is exactly where a Ricardian Contract approach is powerful: a legally meaningful human-readable contract, cryptographically bound to on-chain execution.
We plan on building a Non-Custodial Settlement Engine that binds a real-world trade contract to on-chain escrow and executes releases based on verified trade events.
Circle confirms USDC is natively issued on Polkadot Asset Hub, and can move across Polkadot via XCM.
Polkadot’s own support docs list USDC on Asset Hub and even note identifiers such as USDC asset ID 1337 (useful for integration).
PolkaVM is designed as a high-performance RISC-V VM intended to execute heavier logic efficiently, which matters when you encode real commercial conditions.
Our intent: be among the early practical builders using PolkaVM for real RWA settlement logic, publish performance learnings, and provide a reference architecture the ecosystem can reuse.
A common adoption gap in emerging markets is expecting end users to change behavior and tooling before they see value. Our approach is to abstract complexity so users get faster settlement without needing to become crypto-native.
Goal: the settlement layer is “invisible” operationally, users feel faster, safer settlement, not “I joined crypto.”
To match the full scope of the architecture (on-chain settlement, oracle, indexing, APIs, dashboard, auth, storage, reconciliation, accounting flows, monitoring, and production readiness), we will deliver this work in two phases, each submitted as a separate proposal:
Note: KYC/KYB/KYT/AML internal engines are excluded (handled by third-party providers). We only build the integration hooks and operational workflows needed for the settlement layer to function safely.
Goal: Lock scope, interfaces, and security boundaries to prevent rebuilds and ensure correctness of the settlement lifecycle.
| Task | Deliverable | Cost (USDC) | Notes |
|---|---|---|---|
| 0.1 Protocol & State Machine Spec | Versioned protocol spec | 6,000 | Trade lifecycle, roles (Buyer/Supplier/Admin), state transitions, timeout/dispute rules. |
| 0.2 Contract Interface Spec | Contract ABI + events/errors | 4,000 | Defines calls/events for escrow, oracle gating, fees, cancellations, holds. |
| 0.3 Oracle Spec & Attestation Format | Oracle message schema + signing rules | 4,000 | Signature format, replay protection, idempotency rules, key rotation approach. |
| 0.4 Threat Model & Security Checklist | Threat model + mitigation checklist | 4,000 | Top risks across contract/oracle/UI/infra + test plan for critical paths. |
Goal: Build the on-chain settlement engine on Asset Hub (USDC escrow, conditional release, and fee routing), with deterministic builds and rigorous testing.
| Task | Deliverable | Cost (USDC) | Notes |
|---|---|---|---|
| 1.1 Escrow Smart Contract Core | Escrow contract repo + docs | 38,000 | createTrade, deposit, release, cancel, pause, disputeHold, expiry handling. |
| 1.2 Fee Splitting & Treasury Routing | Fee routing logic + treasury payout | 14,000 | Supplier receives principal; platform/logistics fees routed to treasury wallets. |
| 1.3 Oracle-Gated State Transitions | Oracle-gated actions | 12,000 | “Shipped/Inspected/Delivered” gating, authorization checks, replay-safe design. |
| 1.4 Deterministic Builds | Reproducible build pipeline (Docker) | 10,000 | Verifiable builds: source ↔ deployed artifact integrity. |
| 1.5 Testing (Unit + Invariant) | Test suite + CI checks | 18,000 | State machine invariants, edge cases, failure paths, fuzz/invariant-style coverage. |
Acceptance Criteria: End-to-end testnet flow: create trade → deposit USDC → oracle confirm → supplier payout + treasury payout; plus cancel/timeout/disputeHold paths verified.
Goal: Build the off-chain services that make the protocol usable: contract hashing, storage, oracle relay, APIs, notifications, and user/org auth.
| Task | Deliverable | Cost (USDC) | Notes |
|---|---|---|---|
| 2.1 Auth Service + User/Org Profiles | Auth service + role system | 18,000 | Buyer/Supplier/Admin roles; org profiles; integration hooks for 3rd-party compliance. |
| 2.2 Primary DB (Postgres) + Audit Logs | Schema + migrations + audit logging | 14,000 | Trade records, document metadata, action logs, operator events. |
| 2.3 Ricardian Service (PDF Hashing) | Hash API + verification endpoints | 20,000 | Generates TradeHash (SHA-256), validates hashes, ties contract → trade lifecycle. |
| 2.4 Ricardian Storage | Storage layer + access controls | 10,000 | Secure storage for contract PDFs + metadata, retention policy. |
| 2.5 Oracle Service (Logistics Data Relay) | Oracle node/service repo | 24,000 | Signed attestations, replay protection, idempotent submits, on-chain posting flow. |
| 2.6 Notifications Service | Notification triggers + templates | 12,000 | Status updates (email/WhatsApp/SMS optional), operator alerts for critical events. |
Acceptance Criteria: Trade created via API results in: TradeHash stored + on-chain trade created + indexed state available + oracle update triggers correct contract transition.
Goal: Make the system reliable: indexing, GraphQL/API, reconciliation, error handling, monitoring, and CI/CD.
| Task | Deliverable | Cost (USDC) | Notes |
|---|---|---|---|
| 3.1 Indexer Service | Indexer repo + deployment | 20,000 | Tracks escrow events, balances, oracle events, fee routing, dispute states. |
| 3.2 GraphQL API | GraphQL schema + resolvers | 18,000 | Trade timeline, status, balances, documents, actions allowed, audit visibility. |
| 3.3 Reconciliation Engine | Reconciliation reports + alerts | 18,000 | On-chain truth vs DB state, stuck-state detection, operator remediation workflows. |
| 3.4 Error Handler / Retry System | Retry + dead-letter workflows | 10,000 | Idempotent processing, failure isolation, operator alerting. |
| 3.5 Infra + Monitoring + CI/CD | Monitoring dashboards + pipelines | 12,000 | Observability, alerts, deployments, secrets management, runbooks. |
Acceptance Criteria: On-chain events reflected in API within a defined SLA; reconciliation detects mismatches; monitoring alerts on forced failures.
Goal: Ship the complete user flow: login, create trade, deposit, track milestones, settle; then run a real pilot transaction.
| Task | Deliverable | Cost (USDC) | Notes |
|---|---|---|---|
| 4.1 Agroasys Dashboard | Production dashboard (React/TS) | 22,000 | Trade creation, role-based actions, status timeline, document views, admin controls. |
| 4.2 Third-Party Non-Custodial Wallet Integration | Wallet login + wallet abstraction (non-custodial) | 14,000 | MPC-based key management, user-friendly approvals, non-custodial UX. |
| 4.3 Fiat Ramp Widget Integration | Embedded ramp + callbacks | 8,000 | Funding via partner widget; fallback to manual USDC deposit. |
| 4.4 Pilot Execution + Runbook | Pilot + tx hashes + report | 10,000 | Execute a live settlement (>$10k USDC) + timeline/cost report + ops guide. |
Acceptance Criteria: Non-crypto user can: login → create trade → fund → observe oracle updates → settlement completes; pilot evidenced by tx hashes and report.
Goal: Reduce protocol risk before scaling volume: security review, abuse testing, and production readiness documentation.
| Task | Deliverable | Cost (USDC) | Notes |
|---|---|---|---|
| 5.1 Smart Contract Security Review | Review/audit report + fixes | 22,000 | Professional security review; resolve critical/high issues. |
| 5.2 Oracle & Key Management Review | Oracle security report + fixes | 10,000 | Key rotation, replay protection validation, access controls, rate limits. |
| 5.3 Abuse & Resilience Testing | Stress tests + incident drills | 8,000 | Failure modes: oracle down, indexer lag, DB outage, replay attempts. |
| 5.4 Production Readiness Pack | Runbooks + deployment docs | 10,000 | Ops handbook, incident response checklist, monitoring baselines, rollback strategy. |
Acceptance Criteria: Security findings addressed; readiness checklist completed; system can be operated continuously with monitoring and documented incident procedures.
| Phase | Milestones | Total (USDC) |
|---|---|---|
| Phase 1 | Milestone 0–2 | $208,000 |
| Phase 2 | Milestone 3–5 | $182,000 |
| Grand Total | Milestone 0–5 | $390,000 USDC |
| Risk Area | The Reality | Mitigation |
|---|---|---|
| Adoption risk | Enterprises resist changing settlement behavior; “USDC” sounds like “crypto risk.” | Lead with business math: lower fees, faster settlement, reduced disputes. Keep UX familiar and USD-denominated. |
| Technical risk (PolkaVM is new) | New execution environments can have tooling gaps and hidden edge cases. | Phased rollout + deterministic builds + fuzzing. Start with small controlled pilots before scaling. |
| Oracle trust risk | Oracles can become the weakest link if poorly designed. | Multi-source attestations, signed evidence references, strict schemas, auditability, and clear dispute modes. |
| Regulatory / compliance risk | “Are you a money transmitter?” is a real question in many jurisdictions. | Non-custodial structure: wallet → escrow contract → wallet. Agroasys provides software rails, not custody. |
| Operational/document fraud risk | Fake documents, mismatched shipments, and quality manipulation exist in real trade. | Tie oracle updates to verifiable inspection providers and documentary workflows; keep disputes resolvable via Ricardian contract anchoring. |
| User key management risk | Lost keys = lost access if handled poorly. | Wallet abstraction + recovery-friendly UX while preserving non-custodial guarantees. |
| Stablecoin/rail risk | Stablecoin availability varies by region and counterparty. | Start with corridors where USDC settlement is already practical; expand gradually as rails mature. |
This is infrastructure designed to bring repeating trade settlement activity to Asset Hub—fee-generating usage anchored in real-world demand.
We will open-source the core modules where possible (escrow logic + Ricardian hashing patterns) so other builders (supply chain, real estate settlement, invoice financing) can reuse the standard.
PolkaVM needs high-pressure real workloads to mature. We’ll publish learnings: performance, edge cases, and best practices.
We are not only asking for capital, we want alignment and technical mentorship.
Agroasys is not a team searching for a blockchain use case. We are already executing trade coordination in the real world, and we are trying to solve a specific commercial pain:
Polkadot Asset Hub gives us native USDC settlement and PolkaVM gives us a path to execute complex conditional trade logic efficiently.
If the ecosystem wants RWA to mean “real trade on-chain,” this is the shape of it: delivery-driven settlement with legal binding and non-custodial escrow.
Discussion is now open. Please we would love your reviews on this and thank you very much