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lp

Bancor V3

Rejected
Max sleeve
Reviewed
2026-08-14 · v1
Next review
2026-11-15
Chains
Ethereum · sovereign

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

Bancor V3 is an on-chain liquidity protocol for automated token exchange on Ethereum. At Bancor’s own current documentation identifies it as an AMM, with user tokens paired against protocol-owned BNT in an Omnipool. Single-sided deposits change the wrapper, not the economic result: trading creates token-vault deficits and surpluses, and the BNT distribution intended to compensate deficits has remained paused since the June 2022 emergency. DefiLlama reported about $13.5M on 2026-08-15, but size is not the deciding v1 rule. The shared AMM-LP dossier controls.

The research file

Mechanism applicability

Bancor V3 accepts single-sided token deposits but matches them with protocol-owned BNT in 50/50 pools inside an Omnipool. Swaps move tokens between the trader and those pools, creating a surplus in one vault and a deficit in another. The LP therefore remains exposed to AMM inventory changes even though Bancor abstracts the paired BNT deposit. That directly establishes AMM-LP membership.

Current observation and lifecycle

The DefiLlama protocol API read on 2026-08-15 reported approximately $13.5M of Bancor V3 TVL on Ethereum and continued to classify it as a DEX. Bancor’s current technical and support documentation remained available and stated that the BNT distribution mechanism was paused after June 2022 market conditions exposed an economic vulnerability. The live record is therefore an operating legacy AMM with a materially altered protection mechanism, not a size-only candidate.

Control and exit applicability

A 5-of-7 Bancor DAO multisig executes governance decisions and can pause the entire protocol, blocking deposits, withdrawals and transactions while paused. Bancor states that a TKN LP exiting a deficit pool while BNT distribution is disabled receives no BNT compensation, and a realized deficit is final; volatility controls can also temporarily pause withdrawals. Single-sided return denomination does not restore the value that AMM trading removed.

Why the class rule decides

The shared v1 AMM-LP dossier controls because Bancor LP outcomes depend on pooled trading inventory, while the protection mechanism introduced BNT reflexivity and is currently disabled. Reopen only if Bancor ships an economically separate product without pooled multi-asset inventory, relative-price rebalancing or deficit socialization. That product would require its own review of contracts and upgrades, DAO and multisig controls, BNT economics, deficit state, audits and incidents, assets, fees, liquidity and stressed exits.

Sources

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

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.

ChainVerdictGradeControl constraint
EthereumApproved sovereign No sequencer, no upgrade key, no operator who can be compelled — rule changes require social consensus.
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