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A method for decoding a machine-readable document, comprising:

• receiving, by a computing device, an image of the machine-readable document comprising at least one entry and a corresponding at least one optical code encoding a hash value, a first entry identifier, and a user identifier;
• for each of the at least one entry:
• extracting, by the computing device from the corresponding optical code, the hash value,
• retrieving, by the computing device from a database at an address corresponding to the hash value, a second entry identifier,
• determining, by the computing device, that the first entry identifier and the second entry identifier match,
• responsive to the determination, retrieving, by the computing device from the database at the address corresponding to the hash value, entry coordinates, and
• extracting, by the computing device from the image at the entry coordinates, an entry.

A system for encoding a machine-readable document, comprising:

• a computing device comprising a memory storing a database and a processor;
• wherein the processor is configured to:
• for each of one or more entries to be encoded on the machine-readable document:
• receive an identification of an entry,
• identify, from the identification of the entry, an entry format,
• generate an entry fingerprint,
• calculate a hash value from a hash of at least the identification of the entry, the entry format, and the entry fingerprint,
• store, in the database at an address corresponding to the hash value, the identification of the entry, the entry format, and the entry fingerprint,
• generate an optical code from the hash value, and
• print, on the machine-readable document, the entry and the optical code.