Parallel distributed ledger construction

Software generates a ledger fragment by generating a first block having first data in a first record data field, a nonce value in a first previous block pointer field, and a first hash in a first hash field. Generating the ledger fragment also includes generating a second block having second data in a second record data field, the first hash in a second previous block pointer field, and a second hash in a second hash field. The ledger fragment is appended to a main ledger with a linking block. The linking block is positioned between the first block of the ledger fragment and an end block of the main ledger. The linking block includes a third hash from the end block in a fourth previous block pointer field and the nonce value in a fourth hash field. The linking block is signed by a plurality of voting peers.