Core Identification: From Zcoin to Firo
Zcoin is a project that has existed for many years, and its current core identity is Firo (FIRO). The project team announced the rebranding in October 2020, which officially took effect at the end of November of the same year, aiming to better reflect its "burn and redeem" privacy mechanism. Therefore, the name "Zcoin" typically refers to Firo (FIRO).
Project Positioning and Technological Evolution
Firo is a cryptocurrency focused on transaction privacy. Its core goal is to address the traceability of transactions on transparent blockchains like Bitcoin, providing users with anonymity for financial transactions.
- Technological Path: The project initially implemented the Zerocoin protocol, then shifted to the Sigma protocol in 2019 due to the discovery of cryptographic flaws in the former. The real technological leap occurred in January 2021, when the team activated its self-developed Lelantus protocol.
- Lelantus Protocol Mechanism: This protocol employs a "burn and redeem" model. Users can send any amount of FIRO tokens to an untraceable address (burn), and then redeem new tokens with no prior transaction history, achieving a high degree of anonymity. This approach avoids the trusted setup required by early versions of other privacy coin technologies (such as zk-SNARKs).
- Subsequent Upgrades: In August 2021, the team announced the Lelantus Spark protocol, which further introduced features such as generating one-time receiving addresses and efficient multi-signature operations.
Development History and Challenges
- Founding and Governance: Firo was launched by Poramin Insom in September 2016 under the name Zcoin. The project later introduced a decentralized governance and funding system.
- Security Incident: In January 2021, the Firo network suffered a 51% attack. Subsequently, the project implemented additional security measures such as ChainLocks to enhance network stability.
- Halving Event: The project completed its first block reward halving in September 2020.
Market Status and Trading
As of October 24, 2026, according to public market data, FIRO's circulating supply is approximately 19.17 million tokens, with a total supply cap of 21.40 million tokens. Its market capitalization is in the tens of millions of USD, and its 24-hour trading volume is in the hundreds of thousands of USD range.
As an independent public chain asset (not EVM-compatible), FIRO trading does not follow the common template of "connecting MetaMask to a DEX." Users need to use a wallet that supports the FIRO native network (such as the official wallet or specific compatible wallets) for asset management.
Regarding trading, FIRO is listed on several major cryptocurrency exchanges. Users can buy and sell FIRO on supporting trading platforms through spot trading pairs (e.g., FIRO/USDT, FIRO/BTC). The specific list of available platforms may change over time, so it is advisable to verify the latest platform support before trading.
Comparison with Similar Privacy Coins
Firo is often compared with privacy coins like Zcash. Both offer strong privacy features, but their technological paths differ: Firo's Lelantus protocol requires no trusted setup, achieving anonymity through "burn-redeem"; Zcash uses zk-SNARKs technology and offers optional privacy features (transparent or shielded transactions). This technical difference constitutes the main distinction between them in terms of philosophy and implementation.
