H33 Privacy Layer

Post-Quantum Privacy Infrastructure.

Survivable, attestable, regulator-compatible privacy for public blockchains.

Privacy without hiding from regulators. Every attestation is independently verifiable. Every proof survives the post-quantum transition. Every chain gets the same 32-byte commitment.

API proves. H33 attests. Cachee stores. Chain anchors. Anyone verifies.

Schedule Demo See It Live on Solana

How It Works

1

API proves

STARK proof generated

→

2

H33 attests

Three PQ families sign

→

3

Cachee stores

Full proof retrievable

→

4

Chain anchors

32 bytes on-chain

Any supported chain

→

5

Anyone verifies

No vendor trust

Public HATS verifier

The Quantum Expiration Problem

Every existing privacy system uses quantum-vulnerable cryptography.

Zcash uses Groth16 on BN254. Tornado Cash used Groth16. zkSync, Polygon zkEVM, and Scroll use PLONK with KZG commitments. Aztec uses Honk with KZG. Mina uses Kimchi with IPA on Pasta curves. Every one of these relies on the hardness of the discrete logarithm problem on elliptic curves. Quantum computers solve this in polynomial time. When they arrive, historical privacy is retroactively broken -- not just future transactions, but every shielded transaction ever made.

System	Proof System	Curve/Commitment	Quantum Status
Zcash	Groth16	BN254 pairing	Vulnerable
Tornado Cash	Groth16	BN254 pairing	Vulnerable
zkSync Era	PLONK	KZG on BN254	Vulnerable
Polygon zkEVM	PLONK + FRI	KZG on BN254	Vulnerable
Scroll	PLONK	KZG on BN254	Vulnerable
Aztec	Honk	KZG on BN254	Vulnerable
Mina	Kimchi	IPA on Pasta curves	Vulnerable
H33	STARK	Hash-based (SHA3-256)	Post-Quantum

H33 uses STARKs -- algebraic intermediate representations verified through hash-based commitments. No elliptic curves. No pairings. No quantum expiration date.

Live Chains

One privacy layer. Every major chain.

The same 32-byte commitment anchors on any chain. The same STARK proof verifies everywhere. The same H33-74 attestation is retrievable from Cachee regardless of which chain stores the commitment.

Solana

Privacy attestations via Solana program PDA. Sub-second finality. Live on devnet with program ID verified on Solscan.

Live

Bitcoin

32-byte commitment in OP_RETURN. Immutable anchoring on the strongest settlement layer. Built for ETF custodians and corporate treasuries.

New

Ethereum

Compliant privacy for Ethereum L1 and all L2s. What Tornado Cash should have been -- privacy with a compliance layer.

New

Base

Institutional privacy for the Coinbase ecosystem. Regulated institutions deploying on Base need compliant privacy infrastructure.

New

Arbitrum

The largest L2 by TVL has zero native privacy. Institutional capital migrating to L2s needs compliance without PII custody.

New

Zcash

Post-quantum privacy layer for Zcash. Groth16 shielded transactions have a quantum expiration date. H33 attestations do not.

New

What Never Leaves The User

Never transmitted. Never stored. Never logged.

The privacy layer proves facts about data without transmitting the data itself. Only cryptographic attestations reach the chain. The underlying sensitive information never leaves the user's control.

× Birthdate

× Passport

× SSN

× Biometric data

× Physical address

× Wallet balance

× Portfolio positions

× Counterparty identity

× Transaction history

× UTXO set

× Treasury composition

× Custody structure

Only cryptographic attestations leave the device.

Verification

Three layers. Anyone can verify.

Regulators, auditors, counterparties, and courts can independently verify any attestation without trusting H33, the protocol, or the user. Verification depends on mathematics, not vendor cooperation.

<400ms

Fast

On-chain commitment check. Confirm the 32-byte attestation exists on the target chain and is not expired.

<5ms

Standard

H33-74 PQ attestation verify. Fetch 42 bytes from Cachee and verify three post-quantum signatures.

<100ms

Full Mathematical

Complete STARK proof verification. Fetch proof from Cachee. Run the public HATS verifier. Trust only mathematics.

The HATS verifier is open source. Install with cargo install hats-verifier. No API key. No vendor trust.

Concepts

The privacy infrastructure category.

H33 Privacy Layer is not a product feature. It is infrastructure -- a new category of post-quantum privacy that separates proving from possessing, compliance from custody, and privacy from concealment.

Post-Quantum Privacy

Every privacy system built on elliptic curves has an expiration date. STARK-based privacy does not. Category-defining analysis of quantum vulnerability across all blockchain privacy systems.

Compliant Privacy

Tornado Cash proved that privacy without compliance is a regulatory death sentence. Compliant privacy proves facts to regulators while proving privacy to users. These goals are not in tension.

Privacy Attestation

An attestation is a cryptographic statement that a fact is true, signed by three post-quantum families and distilled to 74 bytes via H33-74. It replaces PII custody with mathematical proof.

Institutional Privacy

Institutions cannot participate in public blockchains without privacy. But institutional privacy must be auditable, compliant, and quantum-resilient. This page defines the requirements and how H33 meets them.

Privacy infrastructure for every chain.

Post-quantum. Regulator-verifiable. 32 bytes on-chain. The only privacy that survives.

Schedule Demo

H33.ai, Inc. · Patents Pending · HATS Standard · H33-74