Tortuga

Rejected venues wait the longest for re-review; a rejection has to earn another look before the scheduled date.

Tortuga is an Aptos-only liquid-staking protocol: users exchange APT for tAPT, while the protocol stakes reserves with Aptos validators and redemptions can wait through the chain unlock period. The current onchain CoinInfo resource and DefiLlama adapter still identify the tAPT supply, but the survey value has collapsed to about $3,617 and the former website and documentation hosts no longer resolve cleanly. Every mint, validator allocation and redemption remains inseparable from unapproved Aptos settlement, so the version-1 rejected-chain dossier controls before size or protocol quality.

Kill criteria: the events that revoke this verdict
• The Aptos chain verdict changes and Tortuga demonstrates a live supported user and redemption lifecycle
• Publishes verified current roles, validator allocation, oracle operation, audits and incidents and passes a $1M mint-to-redemption test through the maximum unlock interval

The research file

Mechanism and chain applicability

Tortuga’s whitepaper defines a single-chain liquid-staking system that accepts APT, returns tAPT and stakes reserves with associated Aptos validators. The current adapter reads the StakedAptosCoin CoinInfo resource at the Tortuga module address. No Ethereum, Solana or other approved-chain deployment appears in the current survey perimeter. Aptos execution is therefore fundamental and rejected-chain replaces the false size-only basis.

Authority and staking applicability

The published design lets protocol logic stake and unstake reserves and uses permissionless calls or oracle-like automation to maintain staking state and distribute stake among validators. The Aptos account continues to expose Tortuga coin and governance-related resources, but the public file does not map current admins, deployer permissions, validator set, oracle operation, audits or incidents. Those are additional blockers, not reasons to override the chain class.

Lifecycle and exit applicability

DefiLlama reported only $3,617 on Aptos on 2026-08-16, while the Aptos resource endpoint still returned a tAPT supply object. The legacy website and docs domains were unavailable during review, so the current user interface and support lifecycle cannot be established. The whitepaper says tAPT redemption can take up to one Aptos unlock period and depends on unstaking when reserves are deficient; this is not an instant or guaranteed proposed-size exit.

Comparison and measurable reopening test

Unlike an Ethereum liquid-staking token reviewed on an approved settlement layer, tAPT cannot mint, accrue, transfer or redeem without Aptos consensus and contracts. Reopen only if Aptos passes the adviser chain review and Tortuga supplies a live supported interface, verified current role and validator maps, audits and incidents, and a successful $1M mint-to-redemption test through the maximum unlock interval. A recovery in TVL alone does not satisfy either the chain or lifecycle condition.

Sources

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

• Tortuga — liquid-staking whitepaper · primary · accessed 2026-08-16
  Supports: APT deposit, tAPT receipt, validator allocation, reserve deficit, unlock-period redemption
• Aptos API — Tortuga tAPT CoinInfo resource · primary · accessed 2026-08-16
  Supports: current onchain resource, tAPT supply, Aptos module address
• Aptos Explorer — Tortuga module account · primary · accessed 2026-08-16
  Supports: Aptos mainnet account, deployed resources, module lifecycle
• DefiLlama adapter — Tortuga tAPT supply accounting · secondary · accessed 2026-08-16
  Supports: CoinInfo supply read, Tortuga module, Aptos-only accounting
• DefiLlama — Tortuga survey record · secondary · accessed 2026-08-16
  Supports: $3,617 TVL, Aptos-only perimeter, Liquid Staking category, current lifecycle signal

Inherited controls

The verdict above grades the protocol layer. Every position also inherits the asset it holds and the chain it settles on. The least safe layer sets the position’s grade, and the position table names which one that is.