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By InveStar- Remit to Invest on Stellar
Custodial USDC wallet on Stellar (Module A)
How Stellar is used
Each user gets a custodial Stellar account where USDC is held and moved using the Horizon API and official Stellar TypeScript SDK.
Wallet creation, trustlines, and payments all run server‑side, with keys stored in AES‑256‑GCM custody today and migrated to Azure HSM for mainnet.
Impact on the project
Lets users interact in familiar fiat terms while Stellar handles fast, cheap USDC settlement underneath, reducing UX friction.
Hardens the core wallet layer so future modules (MoneyGram flows, Soroban investing) can reuse a production‑grade, compliant custody foundation.
How Stellar is used
Uses SEP‑10 for authentication and SEP‑24 for hosted withdrawal with the MoneyGram Ramps Stellar anchor.
USDC moves from InveStar’s distribution account to the MoneyGram anchor in 3–5 seconds at ~0.00001 XLM fees, then MoneyGram issues a BDT cash pickup reference.
Impact on the project
Delivers a visible “Day‑1 win”: real cash pickup in Bangladesh powered by Stellar instead of SWIFT, validating the corridor and partner story.
Creates the first production corridor leg that other payout types (bKash, banks, investing) can build on top of.
How Stellar is used
USDC settles on Stellar into InveStar’s treasury account before conversion via MoneyGram FX, in line with Bangladesh Bank’s USDC restrictions.
The Stellar tx hash becomes the idempotency key and audit anchor for FX conversion and MoneyGram Transfer API calls (Quote → Reference Data → Update).
In future we can provide InveStar Stellar Moneygram powered premium bank cards(Visa/Mastercard) to customers. Migrant diaspora and Freelancers would be the key users with unique benefits.
Impact on the project
Upgrades the corridor from “cash only” to full digital payout (MFS, bank accounts), which is necessary to reach freelancers and higher‑value users.
Uses Stellar as a compliant, programmable replacement for SWIFT, cutting settlement time from days to seconds and supporting ~1 percent all‑in cost targets.
Stellar integration: Once a transfer settles on Stellar, Module D (remit-to-invest-connector) listens to Horizon SSE for USDC settlement events into InveStar's treasury and, when the user's invest toggle is active, routes a configurable portion of the remittance into Dhaka Stock Exchange equities via InveStar's live DSE OMS.Licensing foundation (Bangladesh — DSE):InveStar holds a signed tri-party licensing agreement with a BSEC-licensed brokerage and the Dhaka Stock Exchange directly. All DSE trades execute via the licensed brokerage partner's BSEC authorization. InveStar is the only startup with a contractually confirmed, direct DSE OMS integration — this structure took over a year to establish and constitutes a structural moat.
US equities extension (Alpaca Markets API):
For users investing into US markets, InveStar has agreement with & integrates Alpaca Markets APIs — a FINRA/SEC-registered broker-dealer and SIPC member purpose-built for fintech API integrations. Alpaca requires no separate broker-dealer license from InveStar; the platform acts as the execution layer. This extends the Stellar settle → invest primitive from DSE equities to US securities within the same Horizon SSE event-driven architecture. Alpaca integration is a Phase 2 milestone, self-funded and outside this SCF
budget scope.
Impact on the project
Turns one‑off remittances into recurring investments, increasing user LTV and stickiness while creating corridor‑native DeFi TVL backed by real flows, not speculation.
Differentiates InveStar from Wise/TapTap/Remitly by combining settlement and investing on a single programmable Stellar rail, strengthening both product moat and SCF relevance.
How Stellar is used
InveStar routes a share of the 30+ billion dollar annual Bangladesh remittance corridor over Stellar USDC, with funds sitting on‑chain during wallet funding, settlement, compliance, FX, and investing windows. We then scale across South East Asia.
Stellar’s low fees and fast finality make it economically viable to handle many small‑ticket transfers while still leaving margin for investing and incentives.
Impact on the project
Even modest share (e.g., 5 percent of corridor volume) translates into billions of dollars of annual flow and tens of millions of dollars of utility‑backed on‑chain TVL.
That TVL can later be opened to other wallets/fintechs via SDKs, positioning InveStar as corridor infrastructure, not just a single consumer app.
How Stellar is used
Public repos expose non‑sensitive Stellar integrations (e.g., Soroban contracts, sample Horizon flows), while production custody and orchestration stay in private codebases (due to IP safety and NDAs).
This lets reviewers verify on‑chain test behavior and smart contract logic without exposing full operational details.
Impact on the project
Balances openness (needed for SCF, audits, and ecosystem reuse) with security and IP protection expected from a regulated‑ready remittance platform.
Makes it easier to share reference implementations with other Stellar builders while keeping InveStar's production stack defensible.
$141.3K
InveStar is a production-grade, mobile-first wealth-tech app that uses Stellar as the infrastructure layer for USDC custody, DEX swaps, fiat on/off ramps, wallet interoperability, and cross-border settlement workflows — wrapped in an Agentic AI investing experience for emerging-market diaspora users. Stellar mainnet accounts are active today, while end-to-end remittance and settlement workflows have been verified in testnet environments. Production mainnet USDC settlement cutover is planned for Q2-Q3 2026.
Primary market: US / UAE / MENA diaspora sending to Bangladesh (first corridor, live)
Target expansion: North America → South/Southeast Asia · MENA → South/Southeast Asia
Resources:
Technical Architecture (Detailed)
Technical Architecture (Short)
B2B Order Management System for brokerages
InveStar has moved beyond prototype. The platform has confirmed institutional partnerships, live B2B revenue contracts, on-chain verifiable testnet activity, and production infrastructure — all before a single dollar of SCF funding has been deployed. The sections below distinguish precisely between what is in production today, what is live on testnet with production-ready architecture, and what is scheduled for mainnet cutover in Q2/Q3 2026.
1a. Production-Confirmed (Not Self-Reported, Not Testnet)
InveStar is a confirmed MoneyGram partner in MoneyGram's own partner management system. This is a formal onboarding — not an LOI, not a partnership announcement, or a verbal agreement.
Chain: Stellar
Asset: USDC
Status: Withdraw + Deposit flows ACTIVE in the MoneyGram Ramps partner portal
Company on file: INVESTAR REMIT | InveStar Inc.
Main contact: Farihan F. Rahman, Founder & CEO
Verify: portal.ramps.moneygram.com
MoneyGram is one of the largest fiat on/off ramp providers in the world. Confirmation in their partner management system is a prerequisite for production corridor access — it cannot be self-reported. This represents the single most significant distribution unlock for the remittance product: 350,000+ cash agent locations globally, with deep penetration in the US → Bangladesh corridor.
Two Stellar mainnet accounts are active, funded, and publicly verifiable on stellar.expert.
Mainnet infrastructure is production-ready. The decision to limit live remittance settlement to testnet during beta is intentional and operational — it is not a technical limitation. All user-facing remittance flows route through testnet to eliminate production-fund risk during closed-beta validation. Mainnet settlement cutover is planned for Q2/Q3 2026 as part of the formal go-live milestone.
InveStar's Order Management System is live under a signed tri-party agreement with a BSEC-licensed brokerage and the Dhaka Stock Exchange. Trades are executing today.
Live environment: oms-investar.dev.sandbox3000.com
Commercial: Signed contracts worth $300,000 activate upon full go-live
Distinction: InveStar is the only startup in Bangladesh with a direct, contractually confirmed DSE OMS integration
The DSE integration required a signed tri-party agreement between InveStar, the DSE, and a BSEC-licensed brokerage — a regulatory and commercial milestone that took 18 months to secure and that no other startup in the region has achieved. This is not an API integration. It is a licensed, contracted, trading-live deployment.
InveStar holds an active Microsoft for Startups membership with production Azure infrastructure provisioned and running:
Azure HSM (Hardware Security Module) — key custody for Stellar signing keys in production
Azure API Management (APIM) — production API gateway
Azure Blob Storage — production document and artifact storage
This is not a credits grant sitting unused. The infrastructure is live and actively serving the platform.
Platform: app.investarbd.com/wallet
Authenticated user flows, wallet management, and traction dashboard are live and accessible to SCF reviewers today
_ _
1b. Shipped Capabilities — 9 Milestones (Live or Production-Ready)
Every milestone below is shipped and deployed. SCF reviewers can exercise each capability today. Status is labelled precisely: LIVE means deployed and running in production or on a production-equivalent testnet environment. PRODUCTION-READY means the architecture is production-grade and testnet-validated, with mainnet cutover scheduled for Q2/Q3 2026.
Status: LIVE
Full @stellar/stellar-sdk integration in TypeScript. The SDK builds, signs, and submits transactions against Stellar Horizon on both mainnet and testnet. Balance and transaction history are live Horizon data — no caching layer, no synthetic numbers.
Real-time balance fetching across all accounts
Transaction history with Horizon pagination
Toggle between mainnet and testnet in the reviewer dashboard
Verify: app.investarbd.com/traction → toggle mainnet / testnet
Status: Beta — Testnet validated, mainnet cutover pending KMS integration
Stellar keypairs are generated entirely server-side inside Supabase Edge Functions (create-stellar-wallet). Each secret key is encrypted with AES-256-GCM (crypto.subtle, random 12-byte IV per wallet, 256-bit key from STELLAR_ENCRYPTION_KEY) and stored as aes256gcm:<base64(iv‖ciphertext‖tag)>. Decryption only ever happens server-side at sign time inside stellar-usdc-transfer and stellar-dex-swap — secret material is never returned to the client and never logged.
Live on-chain figures (Horizon, last 24h–90d, as of 14 May 2026):
10,000+ operations executed in the last 24 h on testnet account GAIH3ULL…ZNSR (Horizon pagination cap reached — true count higher), of which 9,991 are create_account ops, validating throughput of the custodial wallet provisioning path end-to-end.
20 production custodial wallets issued to real users (database of record).
2 mainnet Stellar accounts operated by InveStar: 1 funded primary (GAIH3ULL…ZNSR, 6.92 XLM) + 1 USDC trustline holder (GBTSI…WSOG).
12 mainnet operations in the last 90 days — closed-beta only; mainnet USDC settlement cutover targeted for Q2 2026.
All numbers above are pulled live from Stellar Horizon — no caching, no estimates.
Live traction dashboard: app.investarbd.com/traction
Status: Live on Testnet + Limited Internal Mainnet Testing
On-chain DEX swaps via path.PaymentStrictSend on the Stellar DEX, with slippage protection and minimum XLM reserve validation. The swap logic is tested against live Stellar DEX liquidity on testnet, with limited internal testing on mainnet. Full mainnet activation is part of the Q2/Q3 2026 go-live.
Slippage tolerance configurable per swap
Reserve checks run before every transaction to prevent account-below-minimum-balance errors
Path payment routing finds the optimal USDC ↔ XLM path on-chain in real time
Proof in repository: supabase/functions/stellar-dex-swap/ src/components/stellar/DexSwap.tsx
Status: IMPLEMENTED — Sandbox Validated; Production Ramp Pending Q2/Q3 2026
SEP-24 and SEP-31 anchor flows are implemented for both Circle USDC and MoneyGram. The withdrawal flow validates on-chain USDC balance before initiating the off-ramp — users cannot initiate a withdrawal that would fail on-chain.
The MoneyGram integration is not aspirational. As documented in Section 1a above, InveStar is a confirmed MoneyGram partner. Sandbox flows are validated. Production corridor activation — the final step from confirmed partner status to live remittance settlement — is the core Q2/Q3 2026 milestone.
Proof in repository: supabase/functions/stellar-anchor-ramp/ src/pages/MoneyGramRamps.tsx
Status: IMPLEMENTED — End-to-End Flow Validated on Testnet; Production Settlement Planned Q2/Q3 2026
The full remittance flow is implemented: USDC settlement on Stellar with payout in BDT, INR, PHP, and other target currencies. The implementation includes BFIU compliance references, scheduled remittance functionality, and recipient management.
End-to-end flow has been validated on testnet — from sender initiation through USDC settlement to off-ramp payout. This is not a prototype or a wireframe. The flow is complete. What changes at mainnet cutover is the network (testnet → mainnet) and the MoneyGram corridor (sandbox → production) — the remittance logic itself is shipped.
Proof in repository and database: src/pages/SendMoney.tsx DB tables: remit_transactions, remit_audit, remit_schedules
Status: BETA Testing
Native Android and iOS applications built with Capacitor. Push notifications are implemented. Biometric authentication support is in place. The Android build pipeline is Play Store-ready.
The mobile apps give InveStar a distribution channel that web-only remittance competitors lack — particularly important for the diaspora worker segment sending money home from the Gulf, where mobile-first is the only realistic UX.
Investar Wallet 1.0.0 (2)
If you are a new tester, open TestFlight and select Redeem. If you are a returning tester, open TestFlight, go to your profile, and select Redeem Invite from Settings.
Enter LRFFRRCM and start testing.
Status: LIVE — Founder-Funded, Excluded from SCF Budget
Three production AI agents are live on the platform. These are excluded entirely from the SCF budget — funded separately by the founders. They are listed here for completeness but are not part of the SCF deliverable scope.
Status: LIVE
A full-featured OMS for DSE-licensed brokerages — order placement, portfolio synchronisation, watchlist persistence, and real-time market data. Live under a signed tri-party agreement as described in Section 1a.
Live environment: oms-investar.dev.sandbox3000.com
$300,000 in signed contracts activate at full go-live
InveStar is the only startup with a confirmed, contracted DSE OMS integration
_ _
Status: LIVE
A live dashboard pulling real Horizon data across all InveStar Stellar accounts. Designed specifically so SCF reviewers — and anyone else — can verify traction claims independently.
Reviewer verification banner with reproducible curl commands
Mainnet / testnet toggle showing real account state on each network
Live operation counts, wallet counts, and transaction history
Live: app.investarbd.com/traction
Soroban (Later Phase): All Soroban contracts built under SCF funding released under MIT licence on GitHub within 30 days of mainnet deployment.
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2. VERIFIABLE STELLAR ACCOUNTS + LIVE ON-CHAIN METRICS
(snapshot 2026-05-14 — all figures pulled live from Stellar Horizon)
────────────────────────────────────────────────────────────
MAINNET (Stellar public network)
────────────────────────────────────────────────────────────
78 operations · 60 payments · 18 claimable balances · balance: 6.92 XLM
29 operations · 25 payments · 1 trustline (USDGLO) · balance: 11.5 XLM
Mainnet summary: 107 on-chain operations · 85 payments across 2 accounts
(infrastructure readiness + asset-trustline validation; production USDC
remittance settlement scheduled for Q2 2026 cutover)
Reproducible verification:
────────────────────────────────────────────────────────────
TESTNET (Stellar test network)
────────────────────────────────────────────────────────────
12,000+ create_account operations (verified via paginated Horizon query)
3 operations · 2 payments · balance: 14,998 XLM
3 operations · 2 payments · balance: 7,496 XLM
2 operations · 1 payment · balance: 7,500 XLM
Testnet summary: 12,000+ on-chain operations · 5 payments · continuous activity
Reproducible verification:
────────────────────────────────────────────────────────────
CUSTODIAL WALLETS PROVISIONED
────────────────────────────────────────────────────────────
20 production custodial wallets in the application database, each backed
by an AES-256-GCM-encrypted Stellar keypair generated server-side by the
create-stellar-wallet Supabase Edge Function. Private keys never leave
the server.
Live traction dashboard: https://app.investarbd.com/traction
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3. MONEYGRAM — CONFIRMED PARTNER REGISTRATION (not a letter of intent)
InveStar is a registered partner in the MoneyGram Partner Portal — a live entity in MoneyGram's partner management system with Stellar USDC Withdraw and Deposit products active.
Company: INVESTAR REMIT · InveStar Inc
Custodial Type: Custodial
Chain: Stellar
Asset: USDC
Products: Withdraw, Deposit
Main Contact: Farihan F. Rahman (Founder & CEO)
Status: Active registered partner
Confirms directly: M1.2 SEP-24 Ramps (live, not pending) · M2.2 MG Transfer API (active) · Module C FX infrastructure (confirmed)
MG Ramps sandbox: https://portal.ramps.moneygram.com/
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4. TEAM CREDENTIALS
Farihan Rahman (CEO) — full-time since early 2023
EIR Draper University · Nasdaq Milestone Makers Fellow (first Bangladeshi EdTech/FinTech, Fall 2025) · Draper & Perplexity Fellow · O-1 + EB-2 NIW extraordinary talent visa recipient.
Shafkat Alam (CTO) — full-time since mid-2023
University of Toronto CS. Leads all Stellar architecture and production code.
Dipro Chowdhury (COO) — full-time since mid-2023
Masters MEng University of Bristol. 10+ years capital markets investor.
All core IP is founder-built. Backend Stellar services available for SCF panel review on request.
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5. MARKET VALIDATION & CORRIDOR STRATEGY
Phase 1 — Bangladesh (first market, live):
US–Bangladesh corridor: $26–30B/yr (World Bank 2024) · $32–33B record in 2025 · projected $35B+
8.7M diaspora (IOM) · 1M+ freelancers · $1.4B/yr lost to payment friction
Bangladesh Bank 2.5% government remittance incentive — direct government alignment
InveStar target: 1% all-in cost vs 5–7% industry average (World Bank Q1 2025: 6.49%)
Phase 2 — North America / MENA → South & Southeast Asia:
Corridors: US/Canada → PH/VN/ID/LK/NP/PK; UAE/KSA/QAT → SEA/South Asia
40M+ South/Southeast Asian workers in MENA sending $100B+/yr
Multi-corridor deployment enabled by confirmed MoneyGram partner status
Target: 5% of Bangladesh corridor over time ≈ $1.5B/yr Stellar USDC volume; Phase 2 scales 10–20×
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6. COMPETITIVE ADVANTAGE & INSTITUTIONAL VALIDATION
- No competitor combines: Stellar rails (with supported Freighter/Lobster non custodial wallets) + DSE investing (tri-party licensed: InveStar + BSEC brokerage + DSE) + US equities via Alpaca
(FINRA/SIPC) + confirmed MoneyGram anchor. Wise/TapTap/Remitly: no investing layer, none on Stellar, no DSE integration.
Confirmed MoneyGram Partner Portal (Chain: Stellar · Asset: USDC) = structural moat requiring formal onboarding to replicate.
First-mover for USDC inflows to Bangladesh (Bangladesh Bank fintech sandbox ongoing).
Multi-corridor ready: same architecture works US → MENA/SEA ( PH, UAE → IN, KSA → PK) — no rebuild.
STELLAR ECOSYSTEM CONTRIBUTION:
Every InveStar transaction adds measurable, durable value to the Stellar network: real USDC settlement volume (not testnet simulation), new Stellar addresses already on-chain, and — uniquely — payment-backed DeFi TVL via Phase 3 YieldVault (Blend/DeFindex), funded by genuine corridor transfers rather than speculative liquidity mining.The public NPM SDK (M3.6) lets any future Stellar builder plug into the BD corridor without rebuilding the MoneyGram Ramps + SEP-12/24 + HSM signing stack. InveStar's $28B/yr Bangladesh corridor is the proven proof-of-concept for the same Stellar + MoneyGram architecture across MENA→SEA ($100B+/yr, 40M+ workers) — same codebase, same building blocks, zero additional Stellar infrastructure required.
For US investors, the Alpaca Markets API integration (Phase 2, self-funded) extends the remit-to-invest flywheel to US equities — routing USDC settled on Stellar into SEC-regulated securities via a FINRA/SIPC-registered broker-dealer, creating a second on-chain investment primitive anchored to real payment flows on Stellar.
Institutional recognition:
Microsoft for Startups Founders Hub — active member
Dhaka Stock Exchange — direct OMS integration, unique in market
Nasdaq Milestone Makers — Farihan Rahman, Fall 2025 (first Bangladeshi EdTech/FinTech founder)
Draper University EIR (Silicon Valley)
7. REGULATORY & LICENSING STATUS
InveStar operates within the regulatory frameworks. Each constraint is
architecturally resolved — not deferred.
Bangladesh Securities and Exchange Commission (BSEC) — DSE investing: InveStar holds a signed tri-party licensing agreement with a BSEC-licensed brokerage and the Dhaka Stock Exchange directly. InveStar operates as a B2B technology layer; all DSE trades execute via the licensed brokerage partner's BSEC authorization. InveStar is the only startup with a direct
DSE OMS integration confirmed under this tri-party structure.Bangladesh Bank — remittance operator:
InveStar routes remittances through MoneyGram's licensed Money Services Business (MSB) infrastructure, which holds the requisite Bangladesh Bank corridor approvals. No separate BB remittance operator license is required at InveStar's current B2B technology layer stage.
UNITED STATES (FinCEN / State MSB):
US-side compliance is handled via MoneyGram's registered MSB infrastructure for the current corridor. Additionally, Freighter Connect / Stellar Wallets Kit enables optional non-custodial onboarding for power users and diaspora investors who prefer self-custody. Users may connect a Stellar wallet (e.g., Freighter), hold or receive Stellar USDC directly, cryptographically verify wallet ownership, and seamlessly transfer balances into InveStar-managed custodial investment accounts.
For eligible US investors, this architecture also creates a future bridge between self-custodied Stellar USDC and regulated US securities investing via Alpaca Markets APIs. In practice, users could fund an InveStar investment account from a connected Stellar wallet, while trade execution and custody for US equities remain handled through Alpaca’s FINRA/SEC-regulated broker-dealer infrastructure. This preserves regulatory separation while expanding user choice between custodial simplicity and non-custodial asset ownership.Alpaca's API-first model is purpose-built for fintech platforms at InveStar's stage.
Independent FinCEN MSB registration: target Q3 2026 (post-mainnet, self-funded — not included in this SCF budget).
OPEN-SOURCE COMPLIANCE:All Soroban contracts (AutoInvestVault, PreferenceStore) published under MIT licence at M3.3 — hard T3 payment precondition. SCF Audit Bank application filed at M3.3 milestone submission.
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8. BUDGET JUSTIFICATION — RATE DETAIL Integration Track (Large): InveStar integrates 6 official SCF building blocks (MoneyGram Ramps SEP-24/10 · MoneyGram Transfer API · MoneyGram FX · Soroban VM · Stellar USDC SAC · Horizon API + SEP-10/12/24). Large tier threshold is 4+ integrations with complex cross-system data flows. All 6 are active in the architecture — not planned additions.
RATE DETAIL
Integration Track (Large): InveStar integrates 6 official SCF building
blocks (MoneyGram Ramps SEP-24/10 · MoneyGram Transfer API · MoneyGram FX
· Soroban VM · Stellar USDC SAC · Horizon API + SEP-10/12/24). Large tier
threshold is 4+ integrations with complex cross-system data flows. All 6
are active in the architecture — not planned additions.
Team and rates:
Role | Rate | Basis
Senior dev ×2 | $80–85/hr | UofT CS (CTO) + Bristol MEng.
| | Stellar TypeScript SDK, Azure HSM,
| | NestJS, Soroban Rust. Toronto/UK rate.
Mid dev ×1 | $65–75/hr | BD-based. React Native, integration
| | testing, QA tooling, SDK docs.
Sample verification (M1.1):
2 devs × 7 hrs/day × 4 weeks × 5 days/wk × $85/hr = $23,800 ✓
Full auditable breakdown (hours × rate per milestone):
Explicitly excluded from budget (self-funded or ineligible):
Web frontend (live) · AI Coach · App Store fees · Audit costs (→ SCF
Audit Bank) · Marketing · Legal · DSE OMS operations (already built) ·
Alpaca API integration costs (US equities, Phase 2 — self-funded)
Back-weighted payment structure (SCF v7):
#0 Award acceptance: 10% ($14,132.50)
#1 T1 MVP verified: 20% ($28,265.00)
#2 T2 Testnet: 30% ($42,397.50)
#3 T3 Mainnet + UX: 40% ($56,530.00)
TOTAL: 100% ($141,325.00)
Media:
Contact: hello@investarbd.com | https://investarbd.com
Milestone 1.2: Stellar Wallet Interoperability Layer (Freighter + Wallets Kit)
Description:
NestJS wallet interoperability service using Stellar Wallets Kit + Freighter Connect for secure wallet authentication and optional non-custodial remittance flows. Enables diaspora and power users to connect self-custodied Stellar wallets, receive Stellar USDC, verify ownership through wallet signatures, and seamlessly move balances into InveStar custodial investment accounts. Includes fallback custodial onboarding for users who prefer managed wallet experiences. Hybrid custodial/non-custodial architecture supporting remittance-to-investment account linking, wallet authentication, address verification, and transaction signing. Deployed to staging on Stellar testnet.
Deliverables:
Wallet connection via Stellar Wallets Kit
Freighter and other wallet support for optional non-custodial users
Account linking for remittance-to-investment flows
Stellar address verification + signed authentication challenge
Custodial fallback onboarding for non-wallet users
Stellar USDC transfer flow: Freighter → InveStar custodial wallet
Completion Criteria:
Freighter wallet successfully connected via Stellar Wallets Kit (testnet demo video)
Stellar wallet ownership verification completed through signed challenge
Testnet USDC transfer from Freighter → InveStar custodial wallet verified (public tx hash)
GitHub: stellar-wallet-service — wallet connect + signature auth + transfer flow
End-to-end test: wallet funding → custodial transfer → balance reconciliation verified (Postman + Horizon logs)
Budget: $23,800
Milestone 1.2: SEP-10 Auth + SEP-24 MoneyGram Ramps Integration (Stellar Testnet)
Description: SEP-10 JWT auth with MoneyGram Ramps anchor. Full SEP-24 withdrawal flow: initiate → MG webview → USDC transfer on Stellar testnet → poll → cash pickup reference. Submit integration logs for MoneyGram Ramps allowlist application.
Completion Criteria:
Demo video: SEP-10 auth → SEP-24 initiate → USDC tx → cash pickup ref
Stellar testnet tx hash: USDC transfer to MoneyGram anchor address
SEP-10 JWT token exchange log (valid token in response)
MoneyGram Ramps allowlist application submitted (confirmation email)
Budget: $17,850
Milestone 1.3: T1 Integration Testing & QA
Description: End-to-end integration tests for wallet creation, SEP-10 auth, SEP-24 withdrawal flow on Stellar testnet. Bug-fix cycle. QA coverage report. Complete US→cash-pickup smoke test with valid testnet tx IDs.
Completion Criteria:
QA report: coverage matrix for M1.1 + M1.2 (pass/fail per flow)
Zero P0/P1 bugs at Tranche 1 submission
Public testnet URL: wallet accessible + SEP-24 flow triggerable
Budget: $1,950
Tranche 1 Total: $43,600
Milestone 2.1: USDC→Fiat Treasury Conversion Service
Description: Backend service: USDC→USD via liquidity partner outside Bangladesh. FX guardrails, position limits, Pre-Payment Disclosure gating, idempotency controls, full audit trail. Tested in sandbox on Stellar testnet.
Completion Criteria:
100% unit test coverage on FX + limits logic (coverage report)
E2E log: USDC → USD conversion → float account credited (sandbox)
Idempotency test: duplicate tx rejected with correct error (log)
Public demo with Supabase logs showing balance updates
Budget: $16,800
Milestone 2.2: MoneyGram Transfer API — Mobile Wallet (bKash) + Bank Account Payout
Description: Full MoneyGram Transfer API: Quote → Reference Data → Update with bKash MFS wallet or bank account. Direct BDT delivery — Stellar USDC settles in 3–5s, MG handles last-mile. Error handling, retry logic, Pre-Payment Disclosure compliance.
Completion Criteria:
Sandbox $100 test transfer — all 3 payout types (cash, bKash, bank, Alpaca)
Reference number confirmation logs for each payout type
Forced-failure retry: error logged → retry succeeds (video)
GitHub: moneygram-transfer-service (code review ready)
Stellar wallet-funded investment flow validated: Freighter-connected Stellar wallet → USDC custody → InveStar investment funding path (Alpaca sandbox confirmation)
Budget: $14,400
Milestone 2.3: SEP-12 KYC Data Exchange Integration
Description: SEP-12 (KYC info exchange) with MoneyGram anchor: PUT /kyc-status, GET /customer endpoints. KYC field mapping: InveStar user model ↔ MG SEP-12 schema. Compliance dev docs: AML checklist, data-retention policy. No audit costs — filed separately via SCF Audit Bank.
Completion Criteria:
SEP-12 KYC data exchange demo on Stellar testnet (PUT/GET flow video)
AML checklist + data-retention policy doc attached
GitHub commit: SEP-12 implementation in stellar-ramp-service
No audit invoice — Audit Bank application confirmed
Budget: $5,250
Milestone 2.4: Testnet Beta Launch & 50-User Onboarding
Description: Full backend deployed to Stellar testnet. Onboard 50 diaspora beta users: wallet → SEP-24 → USDC tx → payout ref. Backend health monitoring, error logging. Bug fixes deployed. Testnet demo shared in Stellar community.
Completion Criteria:
Live testnet URL with 50+ registered user sessions (anonymised count)
Backend monitoring dashboard URL live (uptime + error rate)
Stellar community post link: testnet demo shared
Beta feedback report: issues logged vs resolved (≥10 responses)
Budget: $6,500
Milestone 2.5: T2 Full Integration Testing & Protocol Verification
Description: Full regression of SEP-10/24/12 protocol compliance, MG Transfer API (all payout types), treasury conversion. Integration test suite across all backend modules.
Completion Criteria:
Integration test report: all 3 SEP protocols + MG Transfer API
Test coverage ≥ 80% across M2.1, M2.2, M2.3 modules
Zero P0 bugs at Tranche 2 submission (bug tracker screenshot)
Budget: $2,275
Tranche 2 Total: $45,225
Milestone 3.1: Mainnet Deployment & Production Infrastructure
Description: Deploy stellar-ramp-service, treasury-conversion-service, moneygram-transfer-service to Stellar MAINNET. Azure Key Vault HSM in production. CI/CD, TLS, containers, domain. Live monitoring stack. DR/HA config + failover test.
Completion Criteria:
First live Stellar mainnet tx hash published publicly
Uptime monitoring dashboard URL live (Grafana / BetterUptime)
DR failover test report with RTO/RPO metrics
Monitoring alert demo: triggered test alert screenshot
Budget: $11,900
Milestone 3.2: Remit-to-Invest Backend Connector (Stellar → DSE OMS API)
Description: Backend API: Stellar USDC settlement confirmation event → route invest-% to DSE OMS trade execution API. Investment allocation logic: fixed %, tiered, or user-defined. DSE OMS + web frontend already live — backend connector only. ≥3 test trades executed from Stellar settlement event.
Completion Criteria:
Live mainnet: Stellar tx → invest toggle → DSE OMS trade executed (video)
≥3 test trades via DSE OMS sandbox from Stellar settlement event
Stellar mainnet tx hash for each settlement leg
GitHub: remit-to-invest-connector service
Budget: $16,800
Milestone 3.3: Soroban AutoInvestVault — Phase 1 Implementation (Open-Source, MIT Licence)
Description: Soroban AutoInvestVault — Phase 1 contract implementation (MIT licence, open-source).
The core contract logic is architecturally complete. M3.3 delivers a fully functional Phase 1 implementation deployed to Stellar testnet:
AutoInvestVault contract: on_settlement(recipient, amount) reads the user's invest_bps preference, validates it (≤10,000 basis points), computes invest_amount, and emits an on-chain INVEST event captured by Horizon SSE sub-second — triggering the DSE OMS trade.
set_preference(user, invest_bps, instrument) with require_auth() guard, instance storage with ~1-day TTL extension.
PreferenceStore: per-user invest allocation and instrument selection, stored on-chain.
Deployed to Stellar testnet with verifiable tx hash as proof.
Published to public GitHub under MIT licence before T3 payment is claimed — hard precondition.
SCF Audit Bank application filed at M3.3 for security audit of AutoInvestVault and PreferenceStore contracts.
Phase 2 (next SCF round): InvestRouter cross-contract + VaultFactory (isolated per-user vaults, Principal Invariant).
Phase 3 (SCF round +2): YieldVault with Blend/DeFindex adapters — utility-backed DeFi TVL from real corridor flows, not speculative yield.
Completion Criteria:
Soroban contract source on GitHub — public repo, MIT licence
Stellar testnet contract deployment tx hash
README: architecture doc + invocation guide
Licence file confirmed (MIT or Apache 2.0)
Budget: $5,950
Milestone 3.4: Mobile App Beta (iOS TestFlight + Android Play Store Internal Testing)
Description: React Native mobile app connecting to InveStar's Stellar backend APIs: custodial wallet (send/receive USDC), SEP-24 payout initiation, transaction history via Horizon API, biometric auth (Face ID / fingerprint). iOS: distributed via TestFlight (internal test). Android: distributed via Play Store Internal Testing track. Beta = QA/deployment deliverable — not a public launch.
Completion Criteria:
iOS build live on TestFlight — testers can install and send USDC (TestFlight link)
Android build live on Play Store Internal Testing — install confirmed by tester
Demo video: wallet → SEP-24 payout initiated from mobile → testnet tx hash
GitHub: mobile repo with React Native source (Stellar SDK integration visible)
Budget: $10,500
Milestone 3.5: Production Monitoring, FX Guardrails & Go-Live Ops
Description: Post-go-live corridor operations: Stellar tx alert stack, FX guardrail tuning for live corridor, BD govt 2.5% remittance incentive reconciliation tooling, first 5 live US→BD mainnet transactions confirmed.
Completion Criteria:
5 live mainnet US→BD transactions (tx hashes published)
FX guardrail config live + alert test screenshot
MoneyGram Ramps allowlist: mainnet approval confirmed (email)
Reconciliation tooling: BD 2.5% incentive calc verified on 1 test tx
Budget: $2,625
Milestone 3.6: Public SDK & Developer API Documentation
Description: TypeScript/JS SDK wrapping Stellar wallet, SEP-10/24/12, and MG payout APIs. Hosted developer docs: README, full API reference, quickstart. Enables future Stellar ecosystem builders to use InveStar rails.
Completion Criteria:
NPM package published (public, versioned)
Docs site URL live (no login required)
External developer tester: quickstart verified (name + attestation)
GitHub wiki: deployment runbook + architecture diagram
Budget: $2,450
Milestone 3.7: T3 Mainnet + Mobile QA, Load Testing & Final Verification
Description: Full mainnet regression QA, load testing ≥500 concurrent VUs, mobile device testing (iOS + Android), incident-response playbook, security review of Stellar signing layer.
Completion Criteria:
Load test: ≥500 VU, p95 latency < 3s (report attached)
Mobile device QA: tested on real iOS + Android devices (screenshots)
Zero P0 bugs at Tranche 3 submission
Incident-response playbook doc attached
Payment Trigger: All Tranche 3 milestones verified + professional user testing (upon mainnet launch)
Budget: $2,275
Tranche 3 Total: $52,500
Farihan (CEO) : full-time since early 2023. Led all product vision, AI/UX, and GTM. Served as EIR at Draper University, Silicon Valley, Nasdaq Fellow.
Shafkat (CTO) : full-time since mid-2023. University of Toronto CS graduate. Leads all architecture, Stellar integration, and production code & runs engineering operations and our team of 8 engineers.
Dipro (COO) : full-time since mid-2023. Masters in Mechanical Engineering (University of Bristol). 10+ years as a capital markets investor. Runs core operations, legal & finances.
All core IP is founder-built and founder-controlled in pvt repo.
diprokc
Shafkat Alam
Farihan F. Rahman
No other submissions.