Bold edits technical deep dive #1213
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Co-authored-by: Derek <103802618+leeederek@users.noreply.github.com>
Co-authored-by: Derek <103802618+leeederek@users.noreply.github.com>
Co-authored-by: Derek <103802618+leeederek@users.noreply.github.com>
Co-authored-by: Derek <103802618+leeederek@users.noreply.github.com>
leeederek
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leeederek
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Jun 25, 2024
Co-authored-by: Derek <103802618+leeederek@users.noreply.github.com>
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rauljordan
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Jun 27, 2024
| - **Fraud proofs:** Proofs of a single step of `WAVM` execution of Arbitrum's state transition function, which are submitted to Ethereum and verified in the `EVM` via a smart contract. These proofs allow Ethereum to be the final arbiter of disagreements over assertions in the rollup contracts, which cannot be falsified by any parties as there is only a single, correct result of executing a `WASM` instruction on a pre-state. | ||
| - **Challenge protocol:** A set of rules through which a disagreement on an assertion is resolved using Ethereum as the final arbiter. Ethereum's VM can verify one-step proofs of deterministic computation that can confirm a challenge winner in Arbitrum's rollup contracts. | ||
| - **Bonding of funds:** Creating an assertion in the rollup contracts requires the submitter to join the validator set by putting up a large bond in the form of `WETH`. Subsequent assertions posted by the same party do not require more bonds. Instead, the protocol always considers validators to be bonded to their latest posted assertion. The bonded funds are taken away if another competing assertion is confirmed. In the case of confirming an assertion, the associated bonded funds can be withdrawn. | ||
| - **Honest validator:** An entity that knows the correct state of the Arbitrum L2 chain and will participate in confirming assertions and challenging invalid assertions if they exist. |
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Note that there are different flavors of validators. By default, all Arbitrum Nitro nodes are "watchtower" validators meaning they will detect invalid assertions and log warnings to the user, but not participate in challenges. You don't need any money for bonding if you run a watchtower validator
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>
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PR Goal: editing the converted GFMD version of the "Technical deep dive" article.