Flirting with Models

Ruslan Fakhrutdinov – Extended Exchange and Vault Tokenization (S7E27)

Feb 17, 2026
Ruslan Fakhrutdinov, founder of Extended and builder of a decentralized perpetual futures exchange, discusses perp DEX vault design, vault shares tokenization, and risk waterfalls. He explains liquidation mechanics, forced closes, and how vaults act as insurer, lender, and hedger. They also cover cross-asset margin, RFQ spot liquidations, and interest-rate incentives to manage concentration.
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INSIGHT

Settlement Independence Matters

  • Extended chooses to run on a public blockchain to keep the settlement layer independent from the exchange.
  • Ruslan argues this separation prevents exchange operators from controlling user funds or unilateral rollbacks.
INSIGHT

Conditional Vs Credible Finality

  • Conditional finality allows rollbacks through governance, while credible finality prevents operator intervention.
  • Ruslan emphasizes separation of responsibilities and that exchanges should not control settlement governance.
INSIGHT

Vault Shares As Collateral

  • Extended's vault issues vault shares (XVS) to depositors and those shares can serve as collateral.
  • The vault provides last-resort liquidity and functions as the platform's insurance fund and future primary lender.
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