Ross Introduces Tacit Chain for Private TAC Payments on Ethereum

Independent developer Ross (z0r0z) introduced Tacit Chain on Sunday, Nov. 8, as a prototype Ethereum rollup for private payments using Tacit's TAC token, with transactions designed to conceal amounts and counterparties. Tacit is a confidential Bitcoin (BTC) decentralized finance project. Users generate payment proofs on their own devices. A rotating leader groups payments into blocks, and Ethereum checks each block with one proof. The system hides amounts and counterparties on-chain, while deposits to and exits from Ethereum remain public. Tacit Chain encrypts payment memos with ML-KEM, a post-quantum standard from the National Institute of Standards and Technology (NIST), alongside elliptic-curve cryptography. The rollup's payment proofs are not quantum-safe. The chain has no protocol fee. A portion of each payment and a 0.1% exit fee go into a shared pool.

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