Zero-Knowledge Verifiable Codebook Compaction with Policy-Enforced Decode

A computing system for zero-knowledge verifiable codebook compression system comprising:

• a processor configured to execute software instructions;
• a memory storing the software instructions that, when executed by the processor, cause the system to:
• receive an input data stream comprising a plurality of data blocks;
• encode the input data stream using a codebook-based compression algorithm to generate an encoded representation;
• concurrently with the encoding, generate a zero-knowledge proof that cryptographically attests that:
• the encoded representation, when decoded using a decoder associated with the codebook, will reconstruct data having a specified digest;
• and
• a policy appendix associated with the codebook was applied during the encoding;
• generate a codebook commitment comprising a cryptographic commitment to contents of the codebook and metadata of the policy appendix;
• format an output packet comprising:
• the encoded representation;
• the zero-knowledge proof;
• and
• public inputs including the specified digest and the codebook commitment;
• and
• transmit the output packet to a verification system, wherein the zero-knowledge proof enables the verification system to validate encoding correctness and policy compliance without accessing plaintext content of the input data stream or contents of the codebook.