Patent attributes
Software configured to receive a first record is provided. The first record includes first record data, a first identification code in an identification code field, a first hash in a record hash field, and a second hash in a previous record pointer field. The first hash is calculated based on the first record data, the first identification code, and the second hash. The second hash is included in a record hash field of a second record. The second record includes the first identification code in its identification code field. A first block is generated having the first record in a first record field, a third hash in a block hash field, and a fourth hash in a previous block pointer field. The third hash is calculated based on the first record and the fourth hash. The fourth hash is included in a block hash field of a second block. The second block is part of a main ledger that includes a third block having the second record in its record field. The third block is positioned prior to the second block in the main ledger.