In bridge and cross-chain transfers, asset origin is not cryptographically proven
2024 Ronin bridge $625M exploit; 2025 FSA crypto-asset guidelines enforcement
- Poseidon hash for on-chain commitment
- BBS+ signatures for selective disclosure
- Groth16 proofs for cross-chain verification
RAG Content Provenance
Enterprise RAG systems index internal documents daily, but document identity and issuer signatures are lost the moment content is ingested. Lemma encrypts originals with AES-GCM and stamps only docHash and CID into the index. AI only accesses facts with verifiable provenance.
Supply Chain Component Provenance
Multi-tier supplier provenance is carried through spreadsheets and PDFs, and tampering goes undetected. Self-ordering agents read attributes without a basis of trust. Lemma encrypts each node's attributes with issuer signatures, leaving a tamper-proof provenance chain.
DeFi Bridge Verification
Cross-chain bridge messages are cryptographically valid yet not necessarily semantically correct. Lemma adds a cryptographic layer that enables the receiving system to independently verify message origin before committing state.
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