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Aztec

AZTEC · Field entry
PrivacySmart contractsPrivacyCaution flag

A privacy-first layer 2 on Ethereum where smart contracts can keep data private

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$0.01890.72%Snapshot · October 20, 2026 · updates live
Market cap
$56.66M
24h volume
$2.36M
Rank
#406
Circulating
3.00B AZTEC
Max supply
10.35B AZTEC
All-time high
$0.0399 February 20, 2026

AZTEC price chart

7-day snapshot. Chart data from CoinGecko.

Read this first — caution flag. As of October 2026 the network is Alpha software with a disclosed critical proving-system vulnerability that its team says puts V5 funds at risk until V6, and the team's deprecated Aztec Connect contracts were exploited for about $2.19 million in June 2026. How to evaluate a project.

What is Aztec?

Aztec is a layer 2 network on Ethereum built so smart contracts can keep accounts, data and actions private. Users prove private steps on their own device with zero-knowledge proofs, and the results settle on Ethereum. The network is still in an "Alpha" phase as of October 2026, and its team has warned that a critical flaw puts funds on the current version at risk.

Utility Lens

What Aztec actually does

Gives Ethereum developers a place to build apps where balances, identities and actions can stay private while settling on Ethereum.

Real-world usage
earlyThe network is live but in Alpha, with a disclosed critical vulnerability that limits real use.
Token necessity
essentialAZTEC is staked by sequencers and bridged in as Fee Juice to pay for every transaction.
Decentralization
moderateThousands of sequencers run the chain and Aztec says neither Aztec Labs nor the foundation operates it, but team and investor tokens unlock over the coming years.
Track record
newThe current network launched in November 2025; critical proving-system bugs were found in March and July 2026, and the team's older Aztec Connect contracts were drained of about $2.19 million in June 2026.

How we rate

What it’s used for

AZTEC is staked by sequencers who propose blocks, used to vote on upgrades and bridged into the network as Fee Juice to pay for transactions. Developers write private contracts in the Noir language. App use is early, since the network is labeled Alpha and the team has told users to treat funds on the current version as exposed.

Role of the AZTEC token:

gasstaking securitygovernance

Evidence of real use

Privacy: what’s hidden, what isn’t

Privacy model
app-level
What it hides
Accounts, balances and the inputs of private functions, which run on the user's device and are proven rather than shown to sequencers.
What stays visible
Any public functions and public state a contract uses, AZTEC movements on Ethereum such as bridging into the network, and the proofs settled on Ethereum.
Reality check
Privacy is only as sound as the proving system, and in August 2026 Aztec disclosed a critical V5 flaw that could let invalid transactions through. The token is legal to own in the US and Coinbase offers it.

Privacy coins, explained

How Aztec works

Aztec is a rollup, a layer 2 that bundles transactions and posts proofs of them to Ethereum. What sets it apart is privacy. Developers write contracts in Noir, a Rust-like language, and mark each function as private or public. Private functions run on the user's own device, which produces a zero-knowledge proof; sequencers check that proof without seeing the data, then run any public parts.

Contracts can mix private and public state and call each other while keeping the private parts hidden. Aztec groups this into three areas: private data such as balances, private identity, where users can reveal only what a compliance check needs, and private computation. Proofs of each batch settle on Ethereum, and Aztec says users have an escape hatch back to layer 1.

The network rolled out in stages. The Ignition Chain went live in November 2025 as a decentralized sequencer network, the token became tradable in February 2026, and the full private execution layer, called Alpha, opened in March 2026. Alpha V5 arrived in July 2026 with faster proving, but days later contributors found a critical bug that could let invalid proofs pass, with a fix planned for V6.

Key moments

  1. 2025The Ignition Chain launches in November and the onchain AZTEC token sale closes on December 6 after raising about $60.8 million.
  2. 2026AZTEC tokens become transferable and tradable in February after a holder vote.
  3. 2026The Alpha network with private smart contracts goes live on March 31.
  4. 2026Old Aztec Connect contracts, deprecated in 2023, are drained of about $2.19 million in June.
  5. 2026Alpha V5 launches in July; a critical proving-system vulnerability is disclosed in August, with a fix planned for V6.

Supply

The total AZTEC supply is 10.35 billion tokens. The 2025 public sale was the first distribution, and sequencers earn new block rewards. Aztec says team and investor tokens stay locked for one year after launch and then unlock gradually over the following two years.

Risks to understand

  • Aztec has told users to consider funds and apps on Alpha V5 at risk of a protocol-wide failure until a fix ships, and it cannot tell whether the flaw was exploited.
  • The network is Alpha software, and further critical bugs may appear before it is considered production-ready.
  • Team and investor tokens begin unlocking a year after launch, which adds supply over time.
  • Aztec Connect, the team's older product, was drained in June 2026 years after it was deprecated, a reminder that abandoned contracts can still hold risk.
  • From July 10, 2027 the EU bars regulated crypto providers from handling anonymity-enhancing coins, and how that applies to privacy layer 2s is still unclear.

Aztec FAQ

Is Aztec live on mainnet?

Yes, but as an Alpha network. As of October 2026 its team says funds on Alpha V5 should be treated as at risk until the V6 fix ships.

What is AZTEC used for?

Sequencers stake it, holders use it for governance, and it is bridged into the network as Fee Juice to pay transaction fees.

Is Aztec the same as Aztec Connect?

No. Aztec Connect was an older product, deprecated in 2023; Aztec Labs renounced control of its contracts in April 2024, before they were exploited in 2026.

Sources

  1. Announcing the Alpha Network — Aztec Network
  2. Alpha V5 Proving System Vulnerability — Aztec Network
  3. Aztec Ignition Chain Update — Aztec Network
  4. How Gas Works on Aztec — Aztec Network
  5. Aztec Connect Incident — Aztec Labs
  6. Latham Advises Aztec on Aztec Network Mainnet Launch and US$60.8 Million Token Sale — Latham & Watkins
  7. Critical Vulnerability in Alpha v4 — Aztec Network
  8. Aztec (AZTEC) price page — Coinbase

Last reviewed October 20, 2026. Written by . Utility Lens ratings are editorial judgments, not investment advice. Market data from CoinGecko. Spot an error? Request a correction.

About the author

Dave McNaught has worked in IT since 1999 and founded All Business Technologies (ABT) in 2003, a Boston-area firm providing Managed IT, Cybersecurity, Managed AI, Web Design and App Development. He publishes The Crypto Guide.

Full bio