H33 vs Blockchain Audit Trail Tools
Blockchain-based audit logging tools log to chain-style structures. H33 produces portable evidence bundles that survive vendor and chain changes.
Several vendors offer "blockchain audit trail" or "immutable audit log" tools — Amazon Quantum Ledger Database (QLDB), Hedera Consensus Service, Microsoft Azure Confidential Ledger, immudb, Provenance.io, and others. These tools provide tamper-evident logging based on chain-like data structures or actual blockchains. H33 solves a related but different problem: producing portable evidence bundles that travel with the customer, survive the originating tool, and remain verifiable across decade-scale retention windows.
What blockchain-based audit tools provide
Blockchain-based audit tools provide write-once, tamper-evident logging via chain-style data structures. Cloud-native immutable ledgers (Amazon QLDB, Azure Confidential Ledger) provide journal-style append-only ledgers with cryptographic verification. Consensus service ledgers (Hedera Consensus Service) provide consensus-ordered append-only message streams with cryptographic timestamping. On-premises immutable databases (immudb) provide cryptographically verifiable database operations. Provenance and integrity platforms provide blockchain-anchored attestations. These tools share several properties: write-once tamper-evident storage, cryptographic integrity proofs for entries, public or consortium chain anchoring in some cases, and vendor-specific APIs.
What blockchain-based audit tools do not solve
Blockchain audit tools solve the tamper-evident logging problem. They do not solve the portable-evidence problem. Vendor coupling — a QLDB ledger is interpretable via AWS APIs; a Hedera Consensus Service stream is interpretable via Hedera tooling. Cross-vendor portability is limited. Decision-level evidence — these tools log entries; they do not natively produce per-decision evidence bundles with model, policy, authority, and citation binding. Independence from the vendor — verifying a QLDB-stored entry depends on AWS continuing to operate QLDB. Long-term retention — these tools' commercial roadmaps determine their long-term availability. Selective disclosure — these tools typically expose log entries in full when accessed. Cryptographic agility — the tools' signature and integrity primitives are typically fixed.
How H33 is different
H33 evidence bundles are designed for portability, not for centralized logging. Each bundle is a self-contained canonical-JSON document, independently verifiable without contacting H33 or any other vendor, cryptographically signed with three independent post-quantum algorithm families, optionally anchored to a public blockchain for time binding, schema-versioned for format evolution, selectively disclosable for sensitive content, and survivable across vendor change. The bundle is not stored in a centralized ledger. The customer chooses where to store the bundles. The verifier runs against the bundle in hand; there is no central service to query.
Side-by-side
| Dimension | Blockchain Audit Tools | H33 Evidence |
|---|---|---|
| Storage model | Centralized vendor-managed ledger | Distributed customer-managed files |
| Verification model | Query the vendor service | Run the open-source verifier |
| Vendor independence | Tied to the vendor | Independent of any vendor |
| Decision structure | Entries (free-form) | Bundles (structured EC objects) |
| Selective disclosure | Tool-dependent | Native bundle feature |
| Vendor migration | Translation required | Bundles are vendor-agnostic |
| GDPR right to be forgotten | Difficult | Straightforward — delete bundles |
Layered architectures
Some buyers use both. The pattern: internal audit logging uses a blockchain audit tool (e.g., QLDB) for operational tamper-evidence and query convenience; external evidence production uses H33 bundles, generated from the same source events. The blockchain audit tool serves internal teams. The H33 bundles serve external verifiers. The two architectures coexist because they serve different audiences with different requirements.
Common questions
Can H33 use QLDB or similar tools as storage?
Yes. The bundles are JSON files; any storage works.
Why prefer H33 over a vendor's audit trail product?
The decision criteria are: is the audit trail the deliverable, or is per-decision evidence the deliverable? Is the vendor relationship acceptable for the retention window? Is verification independence required?
Does H33 provide a queryable interface?
The bundles are JSON; standard indexing tools provide queryability.
Can I migrate from QLDB or Hedera to H33?
Yes. The migration pattern generates H33 bundles from QLDB or Hedera records.
Does H33 require a blockchain?
No. Bundle verification is offline and chain-independent. The chain anchor is an optional time-binding mechanism.
Related: H33 vs Blockchain · Avalanche Evidence Anchoring · Cryptographic Audit Trail · H33 vs Traditional Audit Logs