Startup profile · funding coverage
Iron Fish funding, valuation and investors
Privacy-focused Layer 1 blockchain using zk-SNARKs for shielded transactions.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series A
$27.7M · 2021
Latest known valuation
Not publicly disclosed
Total disclosed equity funding
$28M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
series a · San Francisco, California
Overview
Iron Fish is building a privacy-focused Layer 1 blockchain that uses zero-knowledge proofs (zk-SNARKs) to enable shielded transactions. The project aims to provide a universal privacy layer for crypto assets, allowing users to transact privately by default while maintaining compliance tooling. The company raised a $27.7M Series A in 2021 led by Andreessen Horowitz with Sequoia and Electric Capital participating.
Why Iron Fish is interesting
Iron Fish targets default on-chain privacy before regulators fully define the rules — a16z and Sequoia backed the L1 ahead of mainnet launch in a crowded privacy-coin category.
Product & use cases
Iron Fish L1 runs a proof-of-work consensus with zk-SNARK shielded transactions. Developers can build privacy-preserving applications; users get encrypted balances and transfers by default.
- Private peer-to-peer crypto transfers
- Privacy layer for asset issuers and wallets
- Compliance-friendly shielded transactions with audit capabilities
Key facts
- Series A (2021): $27.7M led by a16z — Iron Fish blog
- Privacy L1 using zk-SNARKs for shielded transactions
Funding history (newest first)
Series A
2021 $27.7MInvestors in our directory
Funds linked from Iron Fish's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: Default shielded transactions on a dedicated L1 vs. optional privacy features on transparent chains.
Privacy coins face regulatory headwinds globally. Iron Fish bets on compliance-compatible privacy architecture, but must prove adoption beyond speculators. Zcash and Monero have years of network effects; Iron Fish competes on modern zk stack and developer experience.
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Zcash direct
Established privacy coin with zk-SNARKs since 2016.
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Aztec Network adjacent
Privacy L2 on Ethereum.
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Monero direct
Privacy coin incumbent with ring signatures.
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Penumbra adjacent
Privacy-focused Cosmos app chain.
Notable stories
- Iron Fish raised $27.7M Series A in 2021 during peak crypto privacy infrastructure interest — before regulatory crackdowns on privacy tools intensified.
- Founder Elena Nadolinski previously worked at Airbnb before starting Iron Fish to build accessible on-chain privacy.
Industries
FAQs about Iron Fish
Practical answers founders, operators, and investors typically search for.
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