Latch

Latch is a cross-chain yield product that uses Ethereum vault deposits and Gravity receipt tokens. Users deposit idle tokens into a chosen vault and earn yield plus points. TVL was about $1.58 million at the 2026-08-15 survey, far below our size floor. We do not open an individual review until the protocol clears that floor: one practice advising 100 households can move $1M to $8M into a venue based on the same research, and below the size floor that book can overwhelm the exit. Size alone decides the judgment, whatever the protocol’s quality. Sustained growth will reopen the file.

Review triggers: events that reopen the verdict
• TVL sustained above the retired TVL threshold for 30 days

Watched nightly: a warning on its venues or files, or a cited document that changes, reopens the memo. The first confirmation is due 2026-11-15.

The research file

Mechanism applicability

Latch Smart Savings routes deposited USDT or ETH into DeFi vaults. It issues value-accruing atUSD or atETH receipts that represent a share of the underlying position. Primary deposits start on Ethereum, while receipts are minted and used on Gravity. Other routes may bridge and swap from other EVM chains. The current tracked vault balance, not the wider interoperability roadmap, places Latch under the shared v1 rule for protocols below the size floor.

Current observation and perimeter

The DefiLlama protocol API read on 2026-08-15 classified Latch as Yield and reported approximately $1.58M on Ethereum. Current Latch documentation identifies Gravity as the Smart Savings and receipt-token layer, while Ethereum holds the primary-market deposits and claims. The registry therefore records both Ethereum and Gravity. The protocol remains documented, and its savings interface is reachable, although the public docs still use forward-looking language for some omnichain functions.

Control and exit applicability

Vault strategy performance, bridges, Gravity receipt accounting, and Latch routing all stand between a user and the underlying assets. For a primary withdrawal, the user burns atUSD or atETH on Gravity and claims on Ethereum after a stated waiting period, usually around seven days. A secondary exit depends on DEX liquidity and bridging. The terms also allow protocol-specific bonding, locking or claim delays, plus service or transaction-fee deductions.

Why the class rule decides

At roughly $1.58M survey TVL, a $1M to $8M advised book would dominate the tracked vault before testing the cross-chain withdrawal path. The shared v1 rule for protocols below the size floor therefore decides. Reopen the individual review after DefiLlama TVL stays above the size floor for 30 consecutive days. Then verify deployed vault strategies, Ethereum and Gravity contracts and operators, bridge and routing controls, incidents, proposed-size primary and secondary exits, legal terms, and named single-chain alternatives.

Research status

This is a capacity-unproven record for Latch, not a quality rejection or approval. Reported TVL says how big the venue is, not what the client owns, who can change the rules, or how a position exits at a proposed size. The individual review opens when the protocol clears the size floor.

Sources

The claims above trace to these. Where a number could not be independently verified, the thesis says so.

• Latch — protocol and Smart Savings overview · primary · accessed 2026-08-15
  Supports: Smart Savings, Gravity Chain, vault yield, omnichain roadmap, current protocol identity
• Latch — receipt and withdrawal architecture · primary · accessed 2026-08-15
  Supports: atUSD, atETH, Ethereum deposits, Gravity receipts, primary withdrawal, T+7, secondary exit
• Latch — terms and protocol restrictions · primary · accessed 2026-08-15
  Supports: bonding delay, claim restrictions, service fee, transaction-fee deduction, supported assets
• Latch — Smart Savings interface · primary · accessed 2026-08-15
  Supports: current interface, vault selection, deposit lifecycle, wallet access
• DefiLlama — Latch survey record · secondary · accessed 2026-08-15
  Supports: current TVL, Ethereum accounting perimeter, Yield category, survey observation

Inherited controls

The research above describes the protocol layer. Every position also inherits the asset it holds and the chain it settles on. The layer with the most administrative power sets the position’s effective control; that describes control, not quality or suitability.