• Solana vote accounts from Marinade Finance public epoch snapshots, enriched with available Stake Auction Marketplace (SAM) measurements. SAM reliability coverage is narrower than the raw vote-account population.
• Two tables linked by vote_account: validator_history has one row per validator and completed epoch, and validator_profiles has 8,989 rows, one per vote account.
• Verified history contains 2,579,805 rows spanning 411 consecutive epochs, 642–1052, from July 13, 2024 through October 9, 2026 UTC. The 2024 period is partial. Annual and trailing periods expose actual observed dates and measurement coverage.
• Both tables are scheduled every 48 hours. Builds run independently and may finish at different times. Publisher delays can leave SAM reliability metrics behind the latest raw epoch. Existing archive paths are reused, so corrections at unchanged paths are not automatically refetched.

• History identity and time: vote_account, epoch, validator_name, epoch_start, epoch_end.
• History measurements: stake_sol, raw_stake_sol, sam_stake_sol, credits, commission_pct, sam_max_commission_pct, mev_commission_bps, reported_uptime, assigned_slots, produced_blocks, skipped_slots, skip_rate, estimated_apy.
• History provenance: raw_source_url, sam_source_url, has_raw_observation, has_sam_observation.
• Profile identity and scope: vote_account, validator_name, first_epoch, latest_epoch, history_epochs, sam_history_epochs, observed_through, source_url.
• Profile current measurements: latest_stake_sol, latest_commission_pct.
• Profile period prefixes: year_2024, year_2025, year_2026, this_year, last_year, last_30_days, last_90_days, last_365_days. Each prefix has observed and available epoch counts, coverage fraction, measured uptime count, weighted uptime, minimum uptime, assigned slots, weighted skip rate, maximum commission and observed dates.
• Profile recent enrichment: recent_behavior, recent_emoji, recent_model_probability, recent_model_scores, recent_model, recent_model_integrity, recent_period_start, recent_period_end, recent_as_of_epoch, behavior_summary.
• Uptime and skip rates are fractions. Commission is percent, MEV commission is basis points, stake is SOL and timestamps are UTC. APY is a publisher annualized estimate, not realized return. Voting-credit comparisons must account for protocol changes.

Missing measurements remain null, never zero or downtime. Coverage describes source-available epochs, not guaranteed calendar completeness. Clef badges describe only the explicitly dated recent window. Unclassified validators retain null badge fields. A ❔ badge means the model label lacked sufficient supporting evidence, not necessarily poor performance.

• Search one profile per validator and rank a chosen period by uptime, skipped slots or commission.
• Apply measurement coverage and assigned-slot thresholds before comparing validators.
• Open a validator's epoch history to inspect trends, gaps and source measurements.
• Discover descriptive behavior similarities using profile embeddings.

Marinade Finance publishes Solana epoch snapshots in public storage and Stake Auction Marketplace (SAM) archives in the ds-sam-pipeline GitHub repository. Source links accompany the observations. Public accessibility does not establish a data licence, and no new licence is asserted.