Changes to “Snapshots and fast sync”
#142 (zoobc.how, 2026-10-26 21:37 UTC) → #1081 (zoobc.how, 2026-10-27 00:42 UTC): Seed article updated
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Nothing inside a snapshot is signed. Its authority is the spine block that names it: a block co-signed by two thirds of the seats, each of which first compared the manifest with its own snapshot, hash for hash.
+ Each node keeps only its three newest snapshot generations. Every snapshot since block 0 is kept by the decentralised storage, not by every node: each snapshot's chunks are held by five registered nodes chosen by lot (see [[the-archive]]).
− Each node keeps only its three newest snapshot generations.
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− > [!design] **Planned design.** The archive will keep every snapshot since block 0 in the decentralised storage, each snapshot's pieces held by a few registered nodes chosen by lot (see [[the-archive]]).
## Fast sync, step by step
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