A system and method of a smart contract and distributed ledger platform with blockchain custody service includes a blockchain service circuit structured to interface with a distributed ledger; a data collection circuit structured to receive data related to items of collateral or data related to environments of the items of collateral; a valuation circuit structured to determine a value for each of the plurality of items of collateral based on a valuation model and the received data; and a smart contract circuit structured to interpret a smart lending contract for a loan, and to modify the smart lending contract by assigning, based on the determined value for each of the items of collateral, at least a portion of the items of collateral as security for the loan such that the determined value of the items of collateral is sufficient to provide security for the loan.