Expired zkAPI deposits may be claimable by the system’s treasury, according to a report published October 2, 2026. The report says zkAPI launched on Ethereum mainnet on October 1, but the Ethereum Foundation’s official listing does not confirm the expiry rule or explain its conditions. The exact expiry period, recovery options and claim process are therefore not established by the available sources.
What is zkAPI?
zkAPI is the reported product name for a project listed by the Ethereum Foundation dAI Team as ZK API Usage Credits: LLMs and Beyond, attributed to Davide Crapis and Vitalik Buterin. The Foundation’s summary describes a protocol for private, metered API access: a user deposits funds once, then makes unlinkable requests, with RLN and zero-knowledge solvency proofs involved in the design.
That high-level description does not establish which details of a request are private. It is not enough to conclude that prompts, responses, provider identity or every payment attribute are hidden. The listing also does not provide a full technical specification or threat model.
What happens when a zkAPI deposit expires?
CryptoCompass reported on October 2, 2026, that an unclosed zkAPI note can be claimed by the treasury after its expiry date. In this context, a note is the deposit-related record described in the report; the available sources do not define its technical structure. The report also says zkAPI went live on Ethereum mainnet on October 1, 2026.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
- Enjoy Bluetooth connectivity, iOS access, and hours of battery use with this mobile-first, secure backup signer. Freedom you can depend on.
- Genuine Check: confirm your signer is authentic during setup with the Ledger Wallet app.
- Protect your signer: keep it in mint condition at all times with a bespoke Pod or Case to avoid scratches and everyday wear and tear.
The treasury rule is supported here by secondary reporting, not by a retrieved primary specification. It should be read as a reported feature rather than a fully documented description of how funds are handled.
What is not clear about the expiry rule?
The official Ethereum Foundation listing establishes the project’s broad design but does not document expired-note handling. The CryptoCompass report does not specify several details a user would need before relying on the rule:
Rank #2
- Proven security at scale: Over 9 years and millions of cards issued with no known remote hacks, while military‑grade EAL6+ security keeps your private keys locked inside the chip. Your cryptocurrencies stay strongly protected from online attackers.
- Tap once to manage your entire crypto wallet across 90 blockchains - no USB cables or Bluetooth, no batteries, no setup. Access 14,100+ coins & tokens, DeFi, NFTs, and staking instantly from your phone
- Smart backup: Use your second Tangem Wallet as your Backup keys with end‑to‑end encryption; no more papers, pictures. If one card is lost, the remaining can still restore full access, with an optional seed phrase available for advanced users.
- Engineered to last up to 25 years: Waterproof (IP69K), shockproof and tested for extreme temperatures from −25°C to 50°C. A durable cold wallet with long‑term protection and independently audited security.
- Trusted by 6 million users worldwide - buy, sell, swap, stake, and spend cryptocurrency directly. The secure offline storage wallet designed for how people actually use crypto wallets
- How long a note remains valid before expiry.
- Whether a user can recover or renew an expired note.
- What action triggers the treasury’s claim, or whether it happens automatically.
- What “treasury” refers to operationally and who controls it.
Until a technical specification or other primary documentation answers those questions, users should not assume that an expired deposit is automatically recoverable, immediately transferred, or subject to a particular deadline.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is zkAPI the same as zBase or Eunomia?
No. Similar descriptions of AI payments and privacy can refer to unrelated projects:
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchQuick Recap
Best Value
- All your digital assets in one place. You can manage thousands of crypto including Bitcoin, Ethereum, Solana, Tether and more.
- Defend your identity against hackers: secure your online accounts with passwordless, hardware backed, 2FA logins for all your favorite apps and websites.
- Connectivity: USB-C cable connection only. No Bluetooth.Compatible with the Ledger Wallet crypto app, both desktop (Windows, macOS, Linux) and mobile (Android only). Not compatible with iOS.
- Protect your digital assets with the industry's best security: keep your private keys offline in your private signer, battle-tested by the Donjon's white hat hackers, CC EAL 6+ certified Secure Element, constantly updated Ledger OS.
- Effortlessly build your crypto portfolio via the all in one Ledger Wallet app: buy, sell, send, receive, swap, stake and more across popular blockchains. 15,000+ coins & tokens in a single dashboard. Keep a close eye on the market. Compare service providers. Track performance. Get timely alerts. Build your portfolio with confidence.
Rank #4
- UNPARALLELED SECURITY: Protect your assets with Trezor Safe 5's NDA-free EAL 6+ Secure Element, offering robust defense and complete transparency.
- EFFORTLESS NAVIGATION: Experience seamless crypto management with the vibrant color touchscreen, designed for intuitive and user-friendly interactions.
- ENHANCED USER EXPERIENCE: Enjoy tactile confirmation with Trezor Touch Haptic Engine, making each interaction precise and engaging.
- SUPPORTS 1000s OF COINS & TOKENS: Securely handle thousands of assets, including Bitcoin, Ethereum, and more, all in one wallet.
- EASY ASSET MANAGEMENT: Monitor and transact seamlessly with Trezor Suite, our user-friendly desktop and mobile app
Rank #3
- Unparalleled Security: Protect your assets with EAL 6+ Secure Element, offering robust defense and complete transparency
- Simple & Secure Interface: Manage your digital assets easily with a clear OLED screen for secure on-device confirmations
- Supports 1000s of Coins & Tokens: Securely handle thousands of assets, including Bitcoin, Ethereum, and more, all in one wallet
- Effortless Asset Management: Monitor and transact seamlessly with Trezor Suite, our intuitive desktop and mobile app
- Enhanced Backup Solution: Multi-share Backup eliminates single points of failure for secure cold wallet recovery
- zBase describes private USDC payments for AI agents using x402 and Privacy Pools. It is not evidence for zkAPI’s reported expired-note treasury rule.
- Eunomia is a separate Stellar Soroban treasury project for bounded AI-agent spending. Its expiring “Leash” concerns agent authorization, not the transfer of expired zkAPI deposits.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
