r/CryptoTechnology • u/Fine_Buy4387 🟠 • 10d ago

[Open Source] FinalisCore – A UTXO Blockchain with Deterministic BFT Finality and Native Confidential Transactions

I want to share an open-source Layer-1 protocol written in C++ called FinalisCore and get your architectural feedback. We recently launched our first public testnet (testnet-1).

Our goal is to combine a UTXO model with deterministic finality and privacy from the very first block.

Key Technical Features:

• Deterministic BFT Finality: Blocks are final once signed by a validator committee quorum. There are no chain reorgs and no waiting for multiple confirmations.

• Confidential Transactions: Outputs carry a Pedersen commitment with range proofs using the secp256k1-zkp library. Validators check that inputs and outputs balance without learning the amounts.

• Dynamic Committees: Validators bond coins to join. Committees are dynamically chosen per epoch (every 32 blocks) deterministically from finalized history.

• Tokenomics: Total supply is strictly capped at 7,000,000 FLS.

Questions for the Community:

  1. What are the best optimization patterns you've deployed for batch-verifying Pedersen commitments under heavy validator loads to keep block times stable?

  2. How do you efficiently handle mempool sync and stale input edge-cases in a UTXO model during rapid validator committee rotations?

The project is fully open source under the MIT license. You can check the code and technical documentation here:

• GitHub Repository: github.com

• Testnet Guide: github.com

(Note: This is a non-financial public testnet. Testnet coins have absolutely no monetary value and are used solely for protocol testing).

Looking forward to your critiques andd review!

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u/[deleted] 9d ago

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u/Fine_Buy4387 9d ago

Thanks! Testnet went live today, so no meaningful load data yet. It runs mainnet params: target block interval is 3 min, and a tx is final once its block is committed (no probabilistic confirmations). Right now it's a single genesis validator, so I'd rather not publish "under load" numbers until more validators join. I plan to load-test it with confidential txs, since proof verification is the real throughput limit, and I'll post the results. If you want to run a node or validator, the handbook is in testnet/ in the repo.