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By Confidential Transfers and Balances
Stellar builders can add confidential amounts/balances with selective disclosure for compliance without reinventing encryption
1. Confidential Stablecoins: Transfer amounts and balances are encrypted. Addresses stay transparent for composability. Selective disclosure for compliance. Result: bank-like privacy, institutional-grade compliance, and better execution.
2. Developer kit for Soroban: contracts and lightweight client SDK to encrypt on the frontend and verify onchain (no new wallet required).
We’ve shipped multiple confidential apps (cApps) already: fixed-rate lending powered by leaderless sealed-bid auctions called Fairates, encrypted limit orders with CowSwap, and “Time Machine” encrypted bid predictions to name a few. We build developer tooling so teams don’t have to reinvent cryptography and they can focus on what they do best.
Maybe in the future, but not in this submission
$150.0K
MVP: Goal is to prove the full confidential transfer flow works on Stellar through a working demo:
Create test accounts with confidential amounts stored in a Soroban contract
Run the deposit-transfer-withdrawal flow (the full product loop)
Perform one selective disclosure for a single transaction
Testnet: Goal is to prove builders can use it
Adoption by builders: 5+ teams integrate our solution
User activity: 1000+ unique wallets execute 1 or more confidential transfers
Mainnet: Goal is to prove utility across payments, institutional, and retail flows
Live partners: 3 production integrations
Usage: 100k confidential transfers (number to be determined in consultation with SDF)
Compliance in practice: 1 public case study of selective disclosure performed by an auditor
Who we are targeting for design partners and why:
1-2 wallets (e.g. Freighter, LOBSTR): fastest path to daily payments MAUs
1 payments processor (e.g. MoneyGram): concentrates cross-border volume and merchant flows
1 RWA issuer (e.g. Ondo). Institutional, compliance-friendly usage that unlocks large transaction volumes
What we are offering: confidential payments and transfers with selective disclosure, starting with the co-processor path (fast, low lift), then executing a fully onchain integration.
Why this fits SDF: Payments and RWAs first which directly aligns with SDF OKRs.
How our GTM drives SDF’s OKRs:
5M MAU for payments (primary): make confidential transfers opt-in and configurable for wallets/processors so users and merchants stop leaking pricing, salaries, and invoices. Privacy becomes a reason to use Stellar payments daily.
$3B RWAs (secondary): confidentiality unlocks institutional flows who need selective disclosure and can’t leak deal sizes and balances publicly. Our per-transaction audit model maps to their policies.
Top-10 DeFi TVL (adjacent): once payments and RWAs are live, confidential balances let market makers and LPs quote tighter, reduce leakage, and improve capital efficiency across Stellar DeFi. This supports primitive parity and differentiation.
Distribution:
Work with wallets, payment processors, and RWA issuers active in the Stellar ecosystem to integrate confidential payments and balances. Prioritize builders with whom SDF already engages.
Publish open-source templates (sample Soroban contracts and demos) so new projects can easily build a working confidential transfer flow
Shipped confidential applications (cApps) on our chain, FairyRing, and EVM. See here: https://www.fairblock.network/cApps
MVP: Confidential Stablecoins
Testnet: Fairates (fixed rate lending), Time Machine (predictions/nano-options app), FairyCow (encrypted swaps on top of CowSwap), Verified Randomness, Onchain Time Bomb (gaming)
Network usage: 66M+ cumulative transactions (including encrypted tx, plaintext transfers, faucet tx, key gen/shares, decryptions) and 2.8M+ encrypted transactions across public testnets
Highest weekly active users (WAU): 32,772
Power users (defined as WAU with 5+ tx): 43%
Link to dashboard: https://docs.google.com/spreadsheets/d/e/2PACX-1vQNzqdy-mp67RWCr_4lE6cbMg6EaF5EUjcqY97fBKEJCkTKLR2L6cSnS6bnAoJQNT1zeV3_t3LFVULc/pubhtml?gid=1715037745&single=true
Tranche 1 - MVP Budget: $80k Completion: 12 weeks
1. Coprocessor ($30k)
2. Cross-chain communication: FairyRing <-> FairyPort <-> Stellar ($20k)
3. Soroban smart contract deployment ($20k)
4. End-to-end flow ($10k)
Tranche 2 - Testnet Budget: $40k Completion 7 weeks
1. End-to-end testnet deployment ($10k)
2. Functional end-to-end demo ($10k)
3. Technical/developer documentation and user guides ($10k)
4. Test coverage, QA, and security scanning ($10k)
5. Frontend/client tooling for ZK/HE Minimal web/client library for encrypt/prove, wallet/RPC hookup, reference TypeScript/Rust helper functions.
Tranche 3 - Mainnet Budget: $30k Completion: 5 weeks (timeline depends on the security audit)
1. Security & audit preparation
2. Formal security review preparation
3. Security audit (credits via LaunchKit)
4. Post-audit docs & guides
5. Mainnet deployment
https://www.linkedin.com/in/peyman-m-b0681b128/
Prev: Cryptography and DeFi @ UWaterloo, ZK Engineer ZKM, privacy-preserving ML HKUST, Snap
https://www.linkedin.com/in/baejames/
Prev: Led BD at Eigen Labs and Component, and Sales/Partnerships Leader at Oracle, Nielsen, startups.
https://www.linkedin.com/in/setareh-ghorshi/
Prev: Security @ QuantStamp, UWaterloo
https://www.linkedin.com/in/nibir-pal-188344b2/
Prev: Osmosis, Six Sigma Sports
https://www.linkedin.com/in/chung-kiu-martin-cheuk-355a0b185/
Prev: Gin Finance, Genesis Node Ltd
https://github.com/orgs/Fairblock/people/suman-saurabh-das
Prev: The Dapp List
Peyman graduated with a Master’s of Computer Science in Cryptography, Security, and Privacy from the University of Waterloo. During his thesis under the supervision of Sergey Gorbunov (Founder and CEO of Axelar), he completed extensive research on applied cryptography, privacy, and blockchain Maximal Extractable Value (MEV). He has surveyed the trade-offs of harmful MEV prevention methods and published his thesis and two academic papers (one accepted and one under review) on using identity-based encryption and threshold cryptography to protect user transactions in various blockchain architectures. He also leads the R&D team of the UWaterloo Blockchain Club, and has previous industry experience in advanced cryptography, specifically Zero-Knowledge Virtual Machines (zkVMs).
Peyman has published numerous papers on cryptography, which can be viewed here:
https://scholar.google.com/citations?user=5DeL1bUAAAAJ&hl=en
James is a seasoned GTM veteran. He recently led Business Development at Eigen Labs, partnering with founders and driving growth for the EigenLayer AVS ecosystem. He previously built GTM functions at Component, a DeFi R&D startup. Before pivoting into web3, James spent 10+ years in tech running enterprise SaaS/data sales and partnerships at startups and large enterprises, including as a founding member of the Partner Development team at Oracle's CX Division. With roots in academic research, James is a published co-author of 11 original papers in neuroscience, anesthesiology, and orthopedics <https://pubmed.ncbi.nlm.nih.gov/?term=james+j+bae>
Peyman
James - Fairblock
No other submissions.