| CPC G06F 16/1837 (2019.01) [G06F 16/137 (2019.01); G06F 16/1805 (2019.01); G06F 16/1865 (2019.01); H04L 9/0643 (2013.01); H04L 9/50 (2022.05)] | 16 Claims |
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1. A computing system, comprising:
a network interface configured to communicate with nodes in a network; and
a processor configured to:
receive, via a blockchain ledger, a plurality of requests from a plurality of producer nodes, where the plurality of requests comprise a plurality of bids for training an iteratively-trained model available to the plurality of producer nodes;
select, from among the plurality of bids, a bid that comprises a hashed improvement value that is generated by a producer node hashing a respective improvement value using a locality-preserving hash function that hides the respective improvement value but preserves information for deriving the respective improvement value from the hashed improvement value;
execute an improvement value determination function on the hashed improvement value to locally determine an improvement value based on the information that is preserved by the locality-preserving hash function;
determine that the locally determined improvement value is equivalent to the hashed improvement value in the selected bid;
in response to the determination, retrieve hashed training data of the producer node associated with the selected bid; and
aggregate the hashed training data of the producer node with a summary of hashes of training data from previous iterations of the training model to generate an updated summary; and
store the updated summary via a data block of the blockchain ledger.
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