Canonical Blocks

The historical record — fetched live from the chain

Every block below was forged by TSUNAGI and adopted into the canonical Cardano Preview chain. The list updates automatically from the public Koios API — the same query anyone can run. Lineage (which binary forged it) comes from the node's own acceptance history.

#HeightSlotHashEpoch Date (UTC)Version / lineageVerify
loading from Koios…

Every hash links to an independent block explorer. Or verify the whole set at once: curl "https://preview.koios.rest/api/v1/pool_blocks?_pool_bech32=pool1nu2ptydyw7hhlp8kc6yr5dmkkujjn4yq59p5e5dm28xp6vfw5ts"

Canonical blocks
Current streak
Orphans (all-time)
Conversion since final fix
Lifetime conversion

"Conversion" = elected slots that became canonical blocks. Two figures, because one number cannot honestly carry both meanings. Lifetime counts every block this node ever forged, including the orphans below — it is the harder number and it is not 100%. Since final fix counts only the window after the last known miss (P2.2 + P5); it is 100% because that window is defined by there being no miss in it, so it measures the fix holding, not the node being perfect. Every orphan below was a real loss during development; each was root-caused, fixed, regression-tested, and documented in the Kintsugi record.

The orphan ledger — published, not hidden

SlotHeightHashDateCauseBecame