Firo

Firo ranks #779 by market capitalization, at $17.08M. It belongs to the Others sector (Privacy). It has traded since Nov 22, 2017, across 32 markets on 1 exchanges, with $118.64K of volume in the last 24 hours. Its all-time high of $172.77 was reached on Dec 26, 2017; the current price is 99.6% below that peak. Its cycle low of $0.307753 came on Apr 16, 2025.

89.9% of the maximum supply of 21.40M FIRO is in circulation.

Firo, formerly known as Zcoin, is a privacy focused cryptocurrency that utilizes zero-knowledge proofs which allows users to destroy coins and then redeem them later for brand new ones with no transaction history.

Its research created the Lelantus privacy protocol which supports high anonymity sets without requiring trusted setup and relying only on standard cryptographic assumptions. Lelantus' innovation in combining one-out-of-many proofs with hidden amounts have also been used in Monero's Triptych protocol and Beam's Lelantus-MW. Firo also utilises Dandelion++ to obscure the originating IP of transactions without relying on a external services such as Tor/i2P.

Firo developed and utilizes Merkle Tree Proofs (MTP) as its Proof-of-Work algorithm which aims to be memory hard with fast verification to encourage mining using commodity hardware. The blockchain is also further secured with LLMQ ChainLocks. The Firo blockchain was used in the Thai Democrat Party Elections in 2018 to elect its party leader with over 127,000+ votes cast nationwide.