Verify one holder claim against the on-chain Merkle root. Given the claim's Solana transaction signature, returns the exact committed record (wallet, gold/S&P/treasury amounts, tx), its Merkle proof, the day's root, and the on-chain Memo that stamped that root. The guarantee is on-chain, not this response: recompute the leaf hash, fold the proof to a root, and check that the memo read from Solana is exactly vaultbags:claims:v1:::, in a transaction signed by the VaultBags treasury (a wallet you hold fixed, not one this response names) that landed after that day ended. Proves the payout ledger is unaltered without trusting the operator.