Post-Quantum Anonymous Transactions without Signatures
summary
Claims that funds are spendable without signature keys by replacing signatures with commitments plus an interactive opening protocol that becomes a zero‑knowledge proof; construction uses no signatures and relies on ZK‑STARKs to get post‑quantum security, transparency and a succinct verifier while depending only on hash functions (Tip5). UTXOs become unlinkable output commitments with nullifiers proved via Merkle membership or, in the deployed system, a sliding‑window Bloom filter (≈31 decoys, minimum 7) to bound prover work and preserve practical anonymity.
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chapters (11)
- 0:00Introduction
- 1:52Post-quantum anonymous transactions
- 3:39Signature scheme limitations
- 6:11Functional commitment schemes
- 9:05ZKPs vs signature schemes
- 12:57Anonymous cryptocurrency with ZKPs
- 14:44ZK virtual machines for transactions
- 15:47Features of ZK-STARKs
- 17:32Transaction graph obfuscation
- 21:30Conclusion
- 22:08Q&A
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