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Liquid Staking Protocols · OBOL rating

Ankr Staking review

Broad multi-chain coverage from a firm whose 2022 key compromise let an attacker mint a trillion tokens.

6.2/10
Mixed
#15 of 15 liquid staking protocolsChecked August 2026
The short answer

Ankr offers liquid staking on networks most protocols skip, backed by a genuine node infrastructure business. Its record includes a December 2022 incident in which a compromised deployer key was used to mint effectively unlimited aBNBc — an operational failure of the most basic kind, followed by compensation.

Best forLiquid staking across a long list of smaller chains

Score breakdown

Category rubric →
  1. Validator decentralisationweight 25%
    6.0avg 6.7
  2. Contract securityweight 20%
    5.5avg 7.9
  3. Peg & liquidityweight 20%
    5.5avg 7.1
  4. Withdrawal designweight 15%
    7.0avg 7.8
  5. Feesweight 10%
    7.5avg 7.4
  6. Transparencyweight 10%
    6.5avg 7.8

this service category average across 15Score = Σ mark × weight. Usable, but there are better options for most people. Methodology.

The evidence behind each mark

Scoring rules →
CriterionMarkWhat we foundSourceChecked
Validator decentralisation6.0not sourced yetnot sourced yet—
Contract security5.5not sourced yetnot sourced yet—
Peg & liquidity5.5not sourced yetnot sourced yet—
Withdrawal design7.0not sourced yetnot sourced yet—
Fees7.5not sourced yetnot sourced yet—
Transparency6.5not sourced yetnot sourced yet—

What we liked, and what fell short

Liked
  • Liquid staking on chains most protocols ignore
  • Long-running infrastructure business behind it
  • Working redemption across supported networks
Fell short
  • A December 2022 developer key compromise allowed unlimited aBNBc minting
  • Thin liquidity on most of its LSTs

Why the marks landed where they did

Ankr's staking sits alongside an established RPC and node infrastructure business, which gives it the operational base to support liquid staking on chains where no specialist protocol exists. That coverage is its remaining advantage.

The 2022 incident

A former employee's access was used to obtain a deployer key, which was then used to mint an effectively unlimited supply of aBNBc, Ankr's BNB Chain liquid staking token. The token's value collapsed, associated pools were drained, and Ankr compensated affected users and reissued tokens. No smart contract was broken — the failure was key management and access control, which is the category of problem that should be easiest to prevent.

Where it stands now

Ankr rebuilt its key management, added multisig controls and continued operating. Its liquid staking tokens across several chains function, and there has been no repeat. But an operator that lost control of a deployer key is asking for trust that its processes have fundamentally changed, and the burden of proof sits with it.

Liquidity and integration

Thin across most of its token set, with limited DeFi integration compared with the leaders. Fee around 10%.

Who should use it

Users needing liquid staking on a chain with no better option, at sizes they could afford to lose. For any major network, better-run protocols exist.

FAQ

What happened to Ankr in 2022?
A compromised deployer key was used to mint effectively unlimited aBNBc tokens, collapsing the token's value and draining associated pools. Ankr compensated users and rebuilt its key management.
Is Ankr safe to use now?
It has operated without a repeat incident and added multisig controls, but the 2022 failure was basic access control rather than a subtle bug, which is why its security score remains low.
Which chains does Ankr support?
A wide list including several that specialist liquid staking protocols do not cover, which is its main remaining advantage.
How liquid are Ankr's staking tokens?
Thin across most of the set, with limited DeFi integration compared with the leading LSTs.