Every holder payout the protocol has ever recorded, looked up on Solana and counted: confirmed by the chain, rejected by it, or no longer carried in the answering node's history. Recomputed on read rather than stored, so it cannot go stale. allLanded is true only when every recorded payout was found AND accepted, because 'not found' is a fact about the node and never counts as success. If the ledger or the chain cannot be read in full, no partial figure is served at all. Individual signatures are not returned: the whole check rebuilds from the public claim records, so a list adds no verification value. Use it to check that the claim ledger matches the chain rather than trusting it. Read-only.