# Contract Addresses

The following information may be useful to those building on Xai. We list the addresses of the smart contracts related to the protocol.

## Core contracts

The following contracts are deployed on Arbitrum One (L2)

<table><thead><tr><th width="272"></th><th>Xai</th><th data-hidden>Sepolia</th></tr></thead><tbody><tr><td>Rollup</td><td><a href="https://arbiscan.io/address/0xC47DacFbAa80Bd9D8112F4e8069482c2A3221336"><code>0xC47DacFbAa80Bd9D8112F4e8069482c2A3221336</code></a></td><td></td></tr><tr><td>Sequencer</td><td><a href="https://arbiscan.io/address/0x995a9d3ca121D48d21087eDE20bc8acb2398c8B1"><code>0x995a9d3ca121D48d21087eDE20bc8acb2398c8B1</code></a></td><td></td></tr><tr><td>CoreProxyAdmin</td><td><a href="https://arbiscan.io/address/0x041f85dd87c46b941dc9b15c6628b19ee5358485#code"><code>0x041F85dD87c46B941dc9b15c6628B19ee5358485</code></a></td><td></td></tr></tbody></table>

## Cross-chain messaging contracts

The following contracts are deployed on Arbitrum One (L2)

<table><thead><tr><th width="208"></th><th>Xai</th></tr></thead><tbody><tr><td>Delayed Inbox</td><td><a href="https://arbiscan.io/address/0xaE21fDA3de92dE2FDAF606233b2863782Ba046F9"><code>0xaE21fDA3de92dE2FDAF606233b2863782Ba046F9</code></a></td></tr><tr><td>Bridge</td><td><a href="https://arbiscan.io/address/0x7dd8A76bdAeBE3BBBaCD7Aa87f1D4FDa1E60f94f"><code>0x7dd8A76bdAeBE3BBBaCD7Aa87f1D4FDa1E60f94f</code></a></td></tr><tr><td>Outbox</td><td><a href="https://arbiscan.io/address/0x7dd8A76bdAeBE3BBBaCD7Aa87f1D4FDa1E60f94f"><code>0x1E400568AD4840dbE50FB32f306B842e9ddeF726</code></a></td></tr><tr><td>Challenge Manager</td><td><a href="https://arbiscan.io/address/0x3a3f62034a42a35eA1686B199bB73006aa525eE4"><code>0x3a3f62034a42a35eA1686B199bB73006aa525eE4</code></a></td></tr></tbody></table>


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