State Street SPDR S&P 500 ETF Trust (Backpack Securities) is a tokenized ETF or fund product issued by Backpack Securities in partnership with Sunrise tokenization infrastructure on Solana. Each token is redeemable 1:1 for the corresponding underlying security entitlement through Backpack Securities. Holders receive economic exposure to the underlying ETF or fund, including price performance, dividends, and applicable corporate actions, while the token can be transferred and traded on Solana.