Stader
Stader ETHx combines permissionless validators with a DAO-approved permissioned operator pool. Permissionless operators post ETH and SD collateral; permissioned operators are KYC-approved and need not post the same bond. ETHx is a legitimate LST, but it did not displace the selected Ethereum providers on validator distribution and established liquidity. This is non-selection, not a defect finding.
- The selected provider in this category fails a review trigger (these are the bench)
- The provider demonstrates a material improvement on the axis it lost on (validator distribution, liquidity depth, or distinct capability)
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
ETH deposits are allocated between permissionless and permissioned validator pools, and ETHx represents the pooled staking claim. Stader documents a 4 ETH contribution plus SD-token bond for permissionless operators, while permissioned operators undergo KYC and DAO approval without a bond.
Control and operating evidence
The hybrid model uses protocol contracts, DAO-selected operators and SD collateral/slashing rules. Stader publishes Halborn audits of the ETHx contracts and node software. Audits establish reviewed code, not validator decentralization or a complete incident-free operating record, and this memo makes no adverse incident finding.
Exit consequences
ETHx holders depend on secondary liquidity for immediate exit or the protocol’s Ethereum withdrawal process and available liquidity. As with other LSTs, market price can diverge from the staking exchange value while validator exits and Ethereum withdrawals settle.
Why the class rule decides
Ethereum LSTs are close substitutes; the category decision favored selected providers on distribution and liquidity rather than re-approving every receipt. Stader remains a bench candidate. Review reopens if a selected provider fails a criterion or Stader demonstrates materially broader distribution, deeper liquidity or a distinct capability.
Research, shelf, and client selection
This record found no disqualifying defect, but favorable research does not create firm-shelf eligibility or a client recommendation. Firm policy must separately admit the product; client purpose and constraints then determine the candidate set; and the advisor records any selection and amount.
Sources
The claims above trace to these. Where a number could not be independently verified, the thesis says so.
- Stader ETHx Docs — protocol overview · primary · accessed 2026-08-14
Supports: protocol overview - Stader ETHx Docs — node-operator models · primary · accessed 2026-08-14
Supports: node-operator models - Halborn — ETHx smart-contract audit · secondary · accessed 2026-08-14
Supports: ETHx smart-contract audit - Lido Docs — Staking Router architecture · primary · accessed 2026-08-14
Supports: Staking Router architecture
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.
| Chain | Verdict | Control | Control constraint |
|---|---|---|---|
| Ethereum | Approved | No freeze key | No sequencer, no upgrade key, no operator who can be compelled. Rule changes require social consensus. |
| Polygon PoS | Rejected | Mixed control | a public validator set orders transactions, but a 5-of-9 multisig can instantly upgrade staking and canonical bridge contracts, while a 5-of-8 controls custom child tokens. |