BRIAN SΞONG
BRIAN SΞONG
USDC+0.02%
đŸ§” @Agglayer v0.3 is out. Most bridges still rely on “just trust us” vibes. This release finally flips the model: "don’t trust the bridge, verify the state." Let me walk you through what changed and why it matters 👇
Agglayer ❄
Agglayer ❄
Agglayer v0.3 mainnet is live. This security upgrade lays the groundwork for non-CDK chains to join, starting with Polygon PoS by the end of Q3. Chains can prove state and connect, securely and without rewriting architecture. Next stop: fast interop (sub 10-second crosschain transactions)
Before v0.3, Agglayer focused mostly on verifying cross-chain messages — not what happened within the chains. Say Chain A sends 100 USDC to Chain B. The old model just verified that "a message to send 100 USDC" was passed. But it didn’t prove: - whether Chain A actually deducted 100 USDC from your wallet - or whether Chain B correctly minted the tokens You were trusting the sequencers or bridge logic to “do the right thing.” With v0.3, Agglayer adds full verification of those internal steps. It checks: - That the state transition on Chain A was valid (e.g. balance was deducted) - That the bridge behavior and claim on Chain B matches what actually happened No more blind trust. Everything is provable now.
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Agglayer v0.3 is a major upgrade to the pessimistic proof. The core idea? Chains now attach a proof that shows they’ve properly finalized their own block — based on their own rules. Think of it like #2FA for settlement: one factor is the state diff, the second is the proof that the block was honestly built.
Agglayer v0.3 security is strengthened via a three-step flow: 1ïžâƒŁ The state transition proof proves its own state transition (via zk proof or ECDSA) 2ïžâƒŁ The AggProver proof verifies state transition proof and bridge constraints (i.e., exits, root changes) 3ïžâƒŁ Finally, the entire thing is re-executed. This makes the whole system verifiable and tamper-resistant — no shortcuts, no trust assumptions. Each step is executed in a zkVM, where we use @SuccinctLabs SP1! That's three SP1 Proofs per chain state commitment! Triple Trust! It’s trustless, modular, and way more secure. Let's explain each layer one by one:
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Step 1 — State Transition Proof This is where each chain proves that its own internal state transition is valid. If you're a zk rollup, you generate a full validity proof (e.g., Plonky2/3, STARK, etc). If you're not, you can sign the new state root using ECDSA. The goal here: prove "I processed these transactions and updated my state honestly." The output is a proof of local state — it says nothing yet about bridges, just internal correctness.
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