On-chain intelligence platform Arkham posted on X that Bitcoin's UTXO (Unspent Transaction Output) model is Satoshi Nakamoto's most underestimated innovation. Arkham noted that several major blockchains, including Litecoin, Dogecoin, and Zcash, have adopted the UTXO accounting model designed by Satoshi for Bitcoin. This model solves the double-spending problem by tracking funds as discrete, spendable outputs rather than account balances, making each coin traceable to its origin without the need for a centralized institution.