Category · tier-1 reading. This page is one implementation of H33's chain-agnostic integrity thesis. For the concept that spans all 11 supported chains, see Public Integrity Layer.
Anyone recording high-stakes operational evidence needs it to outlive the system that produced it. H33-74 is the primitive that produces and anchors that portable post-quantum evidence — this page shows H33-74 evidence anchored on Cosmos. It expresses the H33-74 primitive for the Cosmos anchor surface; it does not add a new capability.
H33-74 anchors to Cosmos chains via memo-field commitments in standard Bank send transactions. Per-chain selection (Cosmos Hub, Osmosis, dYdX, Celestia, app-specific chains) gives operators latitude over which Cosmos chain's economic security underwrites the anchor.
What it does not contain: sensitive payload data. The receipt's content lives off-chain. The anchor only commits to its existence and identity.
Cosmos is the right anchor when sovereign-chain notarization is desirable, when the operator wants to choose specific Cosmos zones based on their economic security, validator set, and governance model, and when IBC interoperability with other Cosmos chains is valuable. Particularly appropriate for organizations operating their own Cosmos appchain who want anchoring within their sovereign zone.
A receipt anchored on Cosmos can also be anchored on Bitcoin, Ethereum, Solana, Polygon zkEVM, Zcash, or any other chain H33-74 supports. The anchors are independent. Adding more anchors does not change the receipt. Removing one anchor (or having one chain become unavailable) does not invalidate the others.
If Cosmos ever becomes inappropriate for an operator's use case (regulatory, performance, security, cost), the operator adds an anchor on a different chain and continues operating. The historical evidence does not have to migrate, because it was never bound to Cosmos.
What differs between blockchains are their operational and integration characteristics. The H33-74 primitive and its cryptographic properties remain unchanged. Consensus model, finality speed, fee level, sovereignty, and IBC reach differ between Cosmos and, say, Bitcoin — the 32-byte commitment, the three post-quantum signatures, and the verification steps do not.
Migrating from one blockchain to another changes the anchoring substrate and deployment environment. It does not change the H33-74 primitive, the cryptographic evidence, or the verification model. A receipt first anchored on a Cosmos zone and later anchored on Ethereum or Solana is the same receipt, proven by the same signatures, checked by the same open verifier.
A third-party verifier needs the H33-74 receipt, the Cosmos anchor transaction (or its hash), and the open-source H33 verifier. From those inputs:
H33-74 is the portable proof primitive — a 74-byte post-quantum attestation. Cosmos (any zone, from the Hub to a sovereign appchain) is one interchangeable anchoring substrate that H33-74 evidence can be recorded on. The chain is the transport layer for a notarization; the proof itself is produced and carried by H33-74.
No. Anchoring writes a 32-byte commitment into a transaction memo and inherits a block timestamp. The cryptographic evidence — three independent post-quantum signatures over the receipt — is unchanged by the choice of chain. H33-74 anchors its evidence to Cosmos; the proof and verification come from H33-74's cryptography, not from Cosmos.
From H33-74. A Cosmos zone contributes one independent existence-time notarization backed by its validator set. Authenticity and unforgeability come from H33-74's signatures and the independent verifier, which behave identically on every chain.
Yes. The same receipt anchors on Bitcoin, Ethereum, Solana, or any supported chain. Migrating from one blockchain to another changes the anchoring substrate and deployment environment. It does not change the H33-74 primitive, the cryptographic evidence, or the verification model.
Yes. Anchoring uses a standard Bank send memo-field commitment, so an operator can anchor within their own sovereign zone and pick the validator set, economic security, and governance model that underwrite the notarization. The receipt and its verification stay the same across zones.
Legitimate reasons exist to prefer a different chain: Bitcoin for the most conservative settlement, Zcash where confidential-transaction ecosystems matter, Solana or Hedera for high fixed-fee throughput, an EVM L2 like Base or Optimism where existing Ethereum tooling is required. Cosmos is not always the best fit — but whichever chain you choose, the H33-74 primitive stays portable across all of them, so the choice is an operational one, not a change to the proof.
The same receipts that anchor to Cosmos can anchor to any of the others.
One Receipt. Multiple Chains. H33-74 Overview