Immutable data. Exactly when you need it.
Dark Tower Data is an independent U.S.-based market data publisher. We are not affiliated with any other company of a similar name. We publish audit-ready OHLCV datasets with repeatable builds and SHA-256 manifests.
Start with evaluation. Download today’s ZIP + manifest from /data.html, verify the SHA-256, and decide if the pipeline fits your research workflow.
Built for traders who are tired of fixing their data before they can use it. Daily immutable ZIP packages with SHA-256 manifests — versioned, transparent, and audit-ready.
Verify in 30 seconds: download ZIP + manifest → compute SHA-256 → confirm match.
Immutable bundles
Daily immutable ZIP + SHA-256 manifest — verify fast, trust the artifact.
Canonical paths
Predictable paths — ingest once, automate forever. No surprise formats.
Truth-first ops
Integrity-first operations — public status, visible audits, and no silent rewrites.