Verax (and the related Linea-EAS, Sign Protocol) extends EAS-style attestation across multiple EVM chains. H33-74 removes EVM as the assumption entirely.
Verax positions itself as a public, permissionless attestation registry across multiple EVM chains. The goal is to make attestations portable across the EVM ecosystem so an attestation issued on one chain can be consumed on another. Sign Protocol pursues a similar architecture.
Verax is the right answer to a real problem: EAS-style attestation locked into a single EVM chain is too narrow when modern operations span multiple EVMs. But Verax still assumes EVM is the universe. H33-74 makes a stronger claim: the entire chain category is optional infrastructure for evidence.
Verax assumes the chain is EVM-compatible. The same architecture cannot natively extend to Bitcoin, Solana, or Zcash because each of those chains has fundamentally different transaction models and execution environments. H33-74 only requires the chain to hold a 32-byte commitment, which every public chain can do.
Verax attestations exist on at least one EVM chain. H33-74 receipts can exist with zero chain anchors. The receipt is valid from the moment it is signed, and chain anchoring is an optional later operation. This matters in environments where public chains are not appropriate (regulated, classified, air-gapped) or for receipts that may never need public notarization.
Verax attestations are signed under EVM-native ECDSA. H33-74 receipts carry three post-quantum signature families on the receipt itself, so receipt integrity is post-quantum from creation.
Verax attestations are designed for smart-contract composability. H33-74 receipts are designed for operational history reconstruction: an auditor takes a collection of receipts and rebuilds a sequence of decisions, actions, and outcomes that can be verified independently of the operator.
Verax is great when your trust model is Ethereum-native attestations, when EVM-only portability is sufficient, and when the operator is willing to depend on the EVM ecosystem for verification infrastructure.
H33-74 is great when chain portability needs to extend beyond EVM. When receipts need to remain verifiable without any chain available. When post-quantum survivability matters. When operational evidence needs to survive any single chain ecosystem's longevity.
Chain portability is the category that separates H33-74 from every chain-coupled attestation system.
Chain Portability One Receipt. Multiple Chains.