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Securing Sei: assessing the relevance of the LtHash collision attack to the Sei blockchainA new LtHash collision attack is far cheaper than the hash was designed to allow, but it only works on states trillions of times larger than Sei's. The attack needs at least 550^8 (about 8.4 sextillion) distinct entries across two colliding states. The Sei blockchain holds about…GigaREAD →Building Giga: Scaling Sei Archival State to 200,000 TPSSei Giga has a roadmap target of 200,000 transactions per second. This throughput presents a challenge at every layer of the stack, from consensus to execution to storage. To meet these strict requirements, Sei has decided to split the archival state into two tiers: short-term,…GigaREAD →Hermes will bring fast and stable finality to Sei GigaSei Giga is being built to become the ultimate high-performance trading blockchain. Hermes is the consensus end goal for that vision, combining the speed of the fastest leader-based protocols with a fallback that ensures fast finality even when a leader is slow or offline.Today’s…Giga · ConsensusREAD →Finality Before Disclosure for Ledger Authenticators in the Quantum Random Oracle ModelThis paper is hosted on arXiv. Read the original paper on arXiv.Quantum · ConsensusARXIV ↗A mechanism design overview of SednaSedna's mempool privacy holds up as an economic guarantee. It hides each transaction by shattering it into coded fragments across parallel proposals, so no single party can read the transaction before its order is irreversible. Paired with a mechanism that rewards proposers that…Sedna · MEVREAD →SIP-5: a post-quantum upgrade path for SeiSIP-5 is the proposed post-quantum upgrade path for Sei. It is not an immediate plan, but rather a proposed way for the network to move to quantum-safe signatures before a quantum computer can break the cryptography that EVM accounts rely on today. Under SIP-5 every existing…QuantumREAD →Encrypting the mempool can make perpetual funding easier to attackEncrypted mempools and private transaction layers like Sei Giga's Sedna stop most front-running, but they can also raise the risk of funding rate manipulation. When an attacker authors the transaction that moves a funding input, encryption blinds the arbitrageurs who would…MEVREAD →Sedna versus the world: MEV protection without the encryption tax.Okay maybe not the world. But the world of encrypted mempools for sure. Sei Research Initiative has previously spoken about Sedna [1] and how it approximates an encrypted mempool in some settings but we’ve treated it relatively hand wavily so far. Today we’ll spend a bit of time…Sedna · MEVREAD →