zkLink Nova

Main entry point for depositing ERC20 tokens from Linea to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

High level interface between the main zkLink contract and Linea’s message service.

Intermediary contract between the one of the validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier and the ZKsync Era diamond that can delay blockAn ordered list of transactions and chain-related metadata that gets bundled together and published to the L1/DA layer. Nodes execute the transactions contained within blocks to change the rollup chain’s state. Protocol rules dictate what constitutes a valid block, and invalid blocks are skipped over. execution (ie withdrawals and other L3Intuitively, L3s are projects that follow a similar structure to the L2 <> L1 structure but with an L2 underneath. It's not entirely defined yet if this implies that the token escrow must be on the L2, or the proof system. Also, certain cases like projects using aggregation layers make the distinction between L2 and L3 fuzzy as certain components start to look less like a traditional blockchain. How to properly define what is a layer in the first place is still an open question. --> L2Layer 2 (L2) is a category of technical solutions aimed to scale the base layer in a trust minimized way. This category includes solutions like rollups as well as state channels and plasma. Other solutions are able to scale further, but with the introduction of additional trust assumptions, which are therefore not trust minimized. Sometimes the term Layer 2 is used to refer to include these solutions too, like validiums and optimiums, but to distinguish between trust minimized and non trust minimized solutions they are often referred to as "light" L2s, opposed to "strong" L2s like rollups. messages). Currently, the delay is set to 0s.

Implements ZK proof verification logic.

Intermediary governance contract with two roles and a customizable delay. This delay is only mandatory for transactions scheduled by the Owner role and can be set by the SecurityCouncil role. The SecurityCouncil role can execute arbitrary upgrade transactions immediately. Currently the delay is set to 0s and the SecurityCouncil role is not used.

Main entry point for depositing ERC20 tokens from Ethereum to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on Ethereum and ETH escrow. Outgoing messages (like deposits) are sent through the EthereumL2Gateway which ultimately makes use of Ethereum’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and Ethereum’s message service.

Contract storing the mapping between secondary chain bridges and acts as an intermediary to receive and relay messages to and from the main zkLink contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the LineaL2Gateway on Linea. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the MantaL2Gateway on Manta Pacific. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the MantleL2Gateway on Mantle. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the EraL2Gateway on ZKsync Era. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the ArbitrumL2Gateway on Arbitrum One. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the BlastL2Gateway on Blast. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the OptimismL2Gateway on OP Mainnet. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the BaseL2Gateway on Base. It redirects them to the Arbitrator contract.

L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development. counterpart receiving messages from the ScrollL2Gateway on Scroll. It redirects them to the Arbitrator contract.

Main entry point for depositing ERC20 tokens from OP Mainnet to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on OP Mainnet and ETH escrow. Outgoing messages (like deposits) are sent through the OptimismL2Gateway which ultimately makes use of OP Mainnet’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and OP’s message service.

Main entry point for depositing ERC20 tokens from Arbitrum One to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on Arbitrum One and ETH escrow. Outgoing messages (like deposits) are sent through the ArbitrumL2Gateway which ultimately makes use of Arbitrum One’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and Arbitrum’s message service.

Main entry point for depositing ERC20 tokens from Base to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on Base and ETH escrow. Outgoing messages (like deposits) are sent through the BaseL2Gateway which ultimately makes use of Base’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and Base’s message service.

Main entry point for depositing ERC20 tokens from Manta Pacific to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on Manta Pacific and ETH escrow. Outgoing messages (like deposits) are sent through the MantaPacificL2Gateway which ultimately makes use of Manta Pacific’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and Manta Pacific’s message service.

Main entry point for depositing ERC20 tokens from Mantle to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on Mantle and ETH escrow. Outgoing messages (like deposits) are sent through the MantleL2Gateway which ultimately makes use of Mantle’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and Mantle’s message service.

Main entry point for depositing ERC20 tokens from Scroll to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on Scroll and ETH escrow. Outgoing messages (like deposits) are sent through the ScrollL2Gateway which ultimately makes use of Scroll’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and Scroll’s message service.

Main entry point for depositing ERC20 tokens from Blast to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on Blast and ETH escrow. Outgoing messages (like deposits) are sent through the BlastL2Gateway which ultimately makes use of Blast’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.

High level interface between the local zkLink contract and Blast’s message service.

Main entry point for depositing ERC20 tokens from ZKsync Era to zkLink Nova. Outgoing messages and incoming withdrawal validation is delegated to the zkLink contract.

Main messaging contract on ZKsync Era and ETH escrow. Outgoing messages (like deposits) are sent through the ZKsync2L2Gateway which ultimately makes use of ZKsync Era’s canonical messaging bridgeA message-passing protocol between two blockchains. At its most basic, a token bridge consists of a smart contract which can escrow funds on one side of the bridge, and instruct the release or minting of corresponding assets on the other side, but bridges could also support arbitrary messages. How these instructions are validated is a critical factor in assessing the trust assumptions of a bridge. to reach the Arbitrator on L1Layer 1 (L1) is a blockchain that is self-reliant on its validator set for its security and consensus properties. Ethereum is an example of a layer 1. Blockchains started receiving the moniker of layer 1 once layer 2 became a meaningful area of development.. Only whitelisted validatorsIn the context of L2s, a Validator is an actor that validates the correctness of state transitions. For optimistic rollups this corresponds to challengers, and for ZK rollups this corresponds to the onchain verifier can sync messages with zkLink Nova, which also transfer the ETH to it via the respective canonical bridges. Incoming messages (like withdrawals) are validated on Linea first and then sent to this contract through the same path. Whitelisted validators can also relay messages to zkLink without going through the canonical bridge (fast path), which are later cross-checked with the slow path. If the check fails, the system halts.