Reports: StorageDescriptor<[Key: FixedSizeBinary<32>], {
    offender: [SS58String, {
        others: {
            value: bigint;
            who: SS58String;
        }[];
        own: bigint;
        total: bigint;
    }];
    reporters: SS58String[];
}, true>

The primary structure that holds all offence records keyed by report identifiers.