zkArchive
Private Data Layer
GitHub
zkArchive · Private data layer on Solana

The Encrypted Data Layer for a Private, Sovereign Web.

zkArchive is your private data layer. Store, share, and verify data on Solana with cryptographic guarantees and zero-knowledge proofs, without ever surrendering control of the underlying content.
CA: FZ3WCqymiqHZ69m9bzj7akixaHGLNSxiKXuiu35Apump

↗ Launch App Read the docs
Fully encrypted archives, composable with Solana dApps, ready for identity, documents, and private workflows.

Background

Transparency is powerful — but not private.

Blockchains have unlocked transparent, tamper-resistant state for financial and application logic. However, this transparency comes with a cost: anything stored on-chain is by default globally visible. While this property is valuable for open finance, it is fundamentally incompatible with many real-world use cases that demand confidentiality.

Identity and KYC information
Sensitive identity proofs cannot safely live in a fully public state machine.
Legal agreements and contracts
Contracts often contain terms, clauses, and counterparties that must remain confidential while still being enforceable.
Health or employment records
Compliance regimes require strict access control, auditability, and privacy guarantees that public chains do not provide by default.
Proprietary business data
Organizations cannot expose internal metrics, strategies, or customer data while still wanting cryptographic assurance.
Sensitive oracle or off-chain signals
Market-sensitive feeds and private scoring models must be verifiable without leaking raw inputs or outputs.

To protect privacy, most systems either avoid putting sensitive data on-chain or resort to centralized storage with opaque trust assumptions. This reintroduces the very problems blockchains were designed to solve: custodial risk, censorship, leakage, and lack of verifiability.

On-chain reality
Privacy gap
Public chains today
Raw payloads, account activity, and data flows are globally visible and permanently indexed. Privacy is added as an afterthought.
With zkArchive
Data is stored encrypted by default, while zero-knowledge proofs give verifiable guarantees without exposing the underlying content.
zkArchive is built to close this gap: preserving blockchain guarantees without sacrificing confidentiality.
Core Features

Everything private, still verifiable.

zkArchive wraps raw Solana state in encryption and zero-knowledge proofs, so data can live on-chain without being exposed — and still power composable workflows across the ecosystem.

zkArchive logo

Encrypted On-Chain Storage

Store data on Solana in fully encrypted form, ensuring only the owner or authorized parties can ever access the underlying content.

Ciphertext by default

Zero-Knowledge Verification

Prove the validity of information without revealing the data itself, enabling trustless checks, private attestations, and verifiable policies.

Proofs, not payloads

Permissioned Data Sharing

Share access selectively using cryptographic keys, enabling controlled collaboration and auditing without compromising privacy boundaries.

Key-based access rails

Composable Privacy Layer

Integrates seamlessly with Solana dApps, letting developers build private workflows, attestations, or data rails on top of zkArchive.

Plug into any program

How it works

A private data circuit wired into Solana.

zkArchive behaves like an encrypted circuit on top of Solana: data is sealed, committed, proven, and shared through a chain of verifiable, privacy-preserving steps.

Encrypted On-Chain Storage

Data is encrypted client-side and written as ciphertext to Solana, guaranteeing that only the owner or authorized parties can ever decrypt the underlying content.

01 Encrypt & store

Zero-Knowledge Verification

zkArchive generates and verifies zero-knowledge proofs, allowing anyone to check the validity of data, policies, or attestations without revealing the data itself.

02 Prove, not expose

Permissioned Data Sharing

Cryptographic keys manage who can decrypt which archives, enabling tightly scoped collaboration and audits without collapsing privacy boundaries.

03 Grant access

Composable Privacy Layer

dApps plug into zkArchive’s APIs and proofs, wiring private workflows, attestations, and data rails directly into existing Solana programs.

04 Compose on-chain

Get started

Wire zkArchive into your next private workflow.

Point your app at zkArchive, define what should stay encrypted, and use proofs instead of raw data. Start with testnet, then move to production once your flows are hardened.

01 Connect on Solana

Install the program + SDK

Add the zkArchive program to your cluster, pull the client SDK, and point your dApp to the encrypted data layer instead of raw on-chain state.

02 Define archives & proofs

Model what should stay private

Decide which payloads become encrypted archives, which parties can decrypt them, and what zero-knowledge proofs your flows require.

03 Ship private workflows

Launch to users & partners

Roll out private attestations, sealed documents, or oracle rails without giving up composability across the Solana ecosystem.

zkArchive logo

Ready to build with encrypted state?

Start on devnet with sample archives and example flows, then plug zkArchive into your production stack when you are comfortable with the guarantees.

↗ Launch App Read the docs
Developer quickstart
Teams & enterprises
Join the builders chat

Stay in touch

zkArchive: The Encrypted Data Layer
for a Private, Sovereign Web.

Have questions or want to stay updated? Follow our social channels for new releases, integrations, and deep dives into building private data flows on Solana.

Follow us