🔴 Only 1 Day Left! Help bring Privacy Payments to Bitcoin Cash - Fundme Campaign
🔴 Only 1 Day Left! Help bring Privacy Payments to Bitcoin Cash - Fundme Campaig
Hey BCH Community,
We are in the final stretch! There are only about 2 days left to support Bastian Carmichael’s (@bastiancarmichael) Phase 2 funding campaign.
Bastian has been doing incredible work moving the needle on Privacy Payments for Bitcoin Cash. This phase is crucial for building the infrastructure we need for a more private and scalable ecosystem. What’s being built in Phase 2?
🏗️ Sharded Pool Scaffold: Enhancing scalability and privacy structure.
💻 ElectronJS Demo UI: A functional interface to showcase the tech in action.
🔗 Beaconless Binding: Improving the efficiency and security of private transactions.
Progress & Technical Deep Dive
The work is backed by solid research. You can check out the latest Bitcoin Cash Research Forum results and discussions
here: bitcoincashresearch.org/t/confidential-transactions/1724/7
What’s Next?
The focus is now shifting towards Milestone 3, which involves intensive testing on Chipnet. Your support ensures this development continues at full speed.
How to Support:
If you believe in a private, decentralized future for BCH, please consider contributing to the campaign:👇👇👇
fundme.cash/campaign/94
Every bit of support helps us reach the finish line. Let’s get this funded! 💚
Silent RPA (SRPA): A New Privacy Framework for Stealth Addresses on Bitcoin Cash
**Silent RPA (SRPA) is the next-generation privacy framework for Bitcoin Cash that unifies Silent Payments (BIP352) and Reusable Payment Codes (BIP47).**
The goal is simple yet powerful:
A single reusable BCH address that can privately receive both coins and tokens — with no notification transactions, no metadata leaks, and no new wallet type.
**🔒 What SRPA Enables**
- Hidden sender and receiver identities via ECDH one-time derivations
- Full CashAddr and CashTokens compatibility
- Seamless integration with CashFusion for stronger privacy
- Full on-chain verifiability without breaking existing wallet standards
The vision:
Make Bitcoin Cash payments as private and simple as handing over physical cash — while staying fully interoperable with today’s BCH ecosystem.
**⚙️ Phase 1 – Proof of Concept ✅**
Phase 1 is complete and demonstrates a working prototype:
- Alice can fund Bob privately using a covenant
- Only Bob can redeem the funds everything verifiable on-chain
- Sigma proofs and Pedersen binding hide proof data
- Encrypted OP_RETURN payloads contain no identifiable metadata
Proof of Work:
- Alice’s covenant locking UTXOs for Bob: https://2026-tempnet. chaingraph. cash/tx/c0f59b851e1840e998c9482206c8a9d1ab03d7d3e6b1a55b0ec17a3ec9e739aa
- Bob spending the locked UTXOs: https://2026-tempnet. chaingraph. cash/tx/4146935ef1b76d25a75df7ed601a0919b1696eb31ac50b26924b49c747f7134b
A runnable demo (node dist/demo.js) shows how stealth addresses are derived, covenants enforce proof validity, and CashTokens integrate directly.
**🚨 Phase 2 – Beaconless Output Binding 🔥 (Main Funding Goal)**
Phase 2 takes SRPA to its full potential with true cash-like privacy on BCH:
- No OP_RETURN beacons – zero visible metadata
- Fully shielded sender, receiver, and amount
- Output-fingerprint verification to bind off-chain proofs to real outputs
- Compact transactions (≤ 100 KB target)
- Integration with 2026 VM improvements for native zero-knowledge support
The result:
Standard-looking transactions, total privacy, and complete compatibility a major leap forward for Bitcoin Cash privacy and usability.
**💰 Support the Development**
Bastian is raising funds to:
- Finalize Phase 1 documentation and demo code
- Begin implementing Phase 2 (Beaconless Output Binding)
- All work is open-source, BCH-native, and focused on real wallet integration.
Support the campaigns:
Phase 1 Finishing – FundMe:
https://fundme. cash/campaign/79
Phase 2 Kick-off – FundMe:
https://fundme. cash/campaign/80
**🌐 Why It Matters**
SRPA represents the next evolution after CashFusion and CashTokens - a unified, private, and practical address system for Bitcoin Cash. Support Bastian’s work and help BCH take the final step toward true cash-like privacy 💚
@ABLA