One job each: history you cannot rebuild if you were not watching.
US bank ratios, peers, and credit-conditions indices from call reports.
B2B software pricing and packaging history plus category list-price indices.
Managed K8s list prices and Helm/OCI catalog point-in-time archive.
Longitudinal fingerprints of public MCP tools, schemas, and scopes.
Ownership and yank/transfer timelines for npm, PyPI, and crates.
Dated robots.txt and AI-policy permission records for crawl defense.
Observed undocumented breaks from a fixed public-API conformance suite.
CAS × grade × supplier catalogue prices and stated lead times.
Adoption timelines from vanishing scientific and HPC job signals.
LAMMPS input-deck checks with citations into failure-mode sources.