Quantum resistant schemes have become a hot topic in recent discussions on encryption in the English speaking community, with many forward-looking projects joining the upgrade of "future resilience". Among them, Sei has placed anti quantum security on a relatively important and urgent upgrade path in the Giga architecture it promotes. From a side perspective, it also reflects that Sei's engineering team is very cutting-edge and innovative. This is also one of the key indicators for me to evaluate whether a public chain is worth holding for the long term. Today, let's take a look at Sei's new ideas in the field of quantum resistance! When most people hear about the threat of quantum computing to cryptocurrencies, their first reaction may be to ask, 'Will wallets be easily cracked in the future?' But the truth is far from simple. Quantum computers are not a universal key, they mainly rely on the Shor algorithm to break through the "elliptic curve" signatures we rely on today (such as ECDSA, Ed25519), which is the mathematical mechanism we use to prove that "this money is mine" when transferring funds. Once quantum technology matures, hackers can theoretically forge signatures and directly transfer our BTC or SEI, which is the real 'Q-day' risk. Many solutions now are to switch to a set of anti quantum signatures, but is this really feasible? At first glance, it sounds reasonable that NIST has introduced new standards such as ML-DSA (based on lattice cryptography) or SLH-DSA (based on hashing). When I saw the calculations done by the Sei Giga team, I realized that things are far from simple. Quantum resistance is not just a mathematical problem, but also a throughput disaster. Imagine: Sei Giga's goal is to process 200000 transactions per second (200k TPS), and now the signature for each transaction is only 64 bytes, making the entire network bandwidth pressure controllable. But if we switch to NIST's recommended minimum anti quantum signature, each signature would require over 1300 bytes, and the optical signature data would consume nearly 0.5 GB/s of bandwidth! So now many "high-performance public chains" that have been painstakingly built by public chains will instantly degenerate into "signature data movers", while EVM has become an accessory. It's like putting tractor tires on an F1 car, no matter how good the engine is, it can't run. So, the Sei team did not blindly follow the trend and "change signatures", but instead proposed two smarter paths from the perspective of technology implementation: The first path: using zero knowledge proof to package and compress signature verification Instead of having each node verify thousands of large and slow anti quantum signatures, it is better to have users or professional aggregators perform batch verification first, then generate a very small zk STARK proof, and finally the chain only needs to verify this zk proof, which is fast and bandwidth saving. The advantage of doing so is that it transfers bandwidth and computational pressure from the consensus layer to the off chain market, retaining quantum security without sacrificing performance. And zk STARK itself is based on hashing, naturally quantum resistant, and a perfect match. The second path: "get on the bus first, then check the ticket", using economic incentives to provide a safety net Sei Giga supports' delayed execution ', which allows it to play with more flexible strategies: transactions submit hash commitments first, chain accounting first, and signature verification when settlement is actually required. If someone submits a fake transaction, they will be punished through the "pledge margin+challenge mechanism". If you dare to cheat, I will confiscate your deposit. This essentially transforms a technical problem into an economic problem: the cost of an attack must far exceed the benefits. Sei's deep accumulation in DeFi and order book trading gives it a natural advantage in incentive design. But what impressed me the most was Sei's anti quantum transition scheme: even the most perfect cryptography would be zero if users didn't upgrade. The "dual key transition period" strategy proposed by Sei is very practical, allowing users to bind an anti quantum public key with their existing private key before Q-day arrives. During the transition period, both keys can be used; Then gradually eliminate the old system. It's like replacing the entire city's power grid, you can't cut off power overnight, you have to install new lines first and then slowly cut them off. In summary, Sei did not hype up "quantum resistance=security", but faced the triple challenges of performance, migration, and economic incentives, using engineer thinking and system logic to solve potential problems in encryption. This strategy not only achieves a certain degree of restraint, but also can be well promoted and popularized. Although Sei may not be the first chain to "claim" quantum resistance, it may be the high-performance L1 with the most ability to "survive" Q-day, which is worth paying attention to and monitoring!