// PROTOCOL GEOLOGY
STRATA
Layer composition: how protocols stack, how composability becomes building material, and why the deeper you stack, the wider the risk surface. Drag to erode. Watch the layers respond.
THE STACK IS THE PRODUCT
L1 settles. L2 scales. The app layer composes. This is the sales pitch. The reality: every layer is a trust boundary, every bridge is an attack surface, and every abstraction leaks when gas spikes or sequencers go down.
Ethereum's rollup-centric roadmap turned the monolithic chain into geological strata. Optimistic rollups settle in 7 days. ZK rollups settle in minutes but cost more to prove. Validiums store data off-chain. Volitions let users choose. Each layer trades a different resource for a different guarantee.
Composability is DeFi's superpower and its systemic risk. When Aave lends stETH that was minted on Lido, staked on Ethereum, and borrowed against on Maker — that's four protocols deep. Each one is audited individually. None of them are audited as a stack.
The 2022 cascades proved it: Terra's UST depeg propagated through every protocol that held UST as collateral. Celsius, Three Arrows, BlockFi — all were deep in the same stack. The layers looked independent. They were load-bearing walls in the same building.
// LAYER ANATOMY
SETTLEMENT
The bedrock. Consensus, finality, data availability. Everything above inherits its security assumptions — and its throughput ceiling.
EXECUTION
Rollups batch transactions and post proofs to L1. Cheap execution, inherited security. The sequencer is a single point of liveness failure that everyone pretends isn't there.
APPLICATION
App-specific chains, hyperchains, orbit chains. Each one trades generality for performance. The question: does the isolation justify the fragmented liquidity?
BRIDGES
The connective tissue between layers. Lock-and-mint, burn-and-release, atomic swaps. $2B+ exploited from bridges since 2021. The weakest stratum in every stack.
DEEP STACKING RISK
In geology, erosion reveals what's underneath. In DeFi, stress events do the same thing. A depeg, a hack, a regulatory action — each one strips away a layer and exposes the assumptions beneath it.
The simulation above models this directly. Mouse pressure applies force. The strata deform, compress, fracture. The visual is geological but the dynamics are financial: pressure propagates through layers, and the weakest stratum fails first.