Multi-source deterministic oracle management

A method comprising:

• receiving, by a master oracle of an oracle network, an oracle network identifier, the oracle network identifier indicative of the oracle network, the oracle network comprising a plurality of oracles;
• identifying a plurality of oracle identifiers for the oracles, the oracle identifiers stored in an oracle index repository and linked with the oracle network identifier in the oracle index repository;
• determining respective public keys for the oracles;
• receiving data messages and digital signatures generated by the oracles;
• verifying, based on the respective public keys for the oracles, the digital signatures are signed the oracles;
• aggregating the data messages into an aggregated data message;
• generating a digital signature of the aggregated data message based on a private key and public key pair for the master oracle, the public key being accessible to a participant node of a distributed ledger network;
• and
• transmitting the aggregated data message and the digital signature to the participant node, the participant node comprising a blockchain, wherein the participant node is configured to verify the digital signature of the master oracle, and execute a smart contract stored on the blockchain, wherein execution of the smart contract causes result data, based on the aggregated data message, to be stored on the blockchain.

A system comprising

• an oracle index repository, the oracle index repository comprising a plurality of oracle identifiers mapped to an oracle network identifier, the oracle network identifier representative of an oracle network and the oracle identifiers representative of oracles in the oracle network, wherein the oracles comprise a master oracle configured to aggregate data messages received from other oracles in the oracle network into an aggregated data message,
• a processor, the processor configured to:
• receive an oracle registration request;
• extract parameters from the oracle registration request, the parameters comprising a network identifier and a public key,
• register an oracle by:
• storing, in the oracle index repository, an oracle identifier for the oracle and the public key, and
• mapping, in the oracle index repository, the oracle identifier to the oracle network identifier;
• receive a smart contract registration request, the smart contract registration request comprising the oracle network identifier for the oracle network;
• and
• select, from the oracle index repository, a master oracle identifier representative of the master oracle for the oracle network;
• and
• cause a participant node to receive the aggregated data message from the master oracle.