Identifying faults in a blockchain ordering service

An apparatus, comprising:

• a processor configured to:
• initiate a timer to begin to time an audit procedure;
• when the timer expires after a predefined period of time, randomly select a committer node member of a blockchain;
• a transmitter configured to transmit a request for a hash of a blockchain block;
• wherein the processor is further configured to
• compare the hash of the blockchain block, received from the randomly selected committer node, to a known value of the hash of the blockchain block;
• and
• determine whether the hash of the blockchain block received matches the known value of the hash of the blockchain block.

A non-transitory computer readable storage medium configured to store instructions that when executed cause a processor to perform:

• initiating a timer to begin timing an audit procedure;
• when the timer expires after a predefined period of time, randomly selecting a committer node member of a blockchain;
• transmitting a request for a hash of a blockchain block;
• comparing the hash of the blockchain block, received from the randomly selected committer node, to a known value of the hash of the blockchain block;
• and
• determining whether the hash of the blockchain block received matches the known value of the hash of the blockchain block.