A software-based data logger that chains log entries using cryptographic hashes — each entry contains the hash of its predecessor, making the entire log tamper-evident. Any modification to a historical entry breaks the chain and is immediately detectable.

This provides a lightweight, hardware-independent complement to TEE-based logging for compliance, audit trails, and provider accountability. Use cases include verifiable compute history, deployment event logs, and billing audit trails.

No consensus mechanism or external chain is required — the hashchain itself serves as the proof of integrity.

Tamper-evident audit logging for provider and workload events. Each log entry is cryptographically linked to the previous one, making any retroactive modification immediately detectable — no dedicated hardware required.