diff --git a/docs/docs/build/contracts/index.md b/docs/docs/build/contracts/index.md
index c888430a..61fb8e0e 100644
--- a/docs/docs/build/contracts/index.md
+++ b/docs/docs/build/contracts/index.md
@@ -2,27 +2,15 @@
 
 ## Mainnets
 
-### Ethereum (L1)
+### BOB Core Contracts (L2)
 
-- SystemConfig: [0xaa0A1EfD35d6578ea6B5704dbc2c40B36A55B590](https://etherscan.io/address/0xaa0A1EfD35d6578ea6B5704dbc2c40B36A55B590)
-- SystemConfigProxy: [0xACB886b75D76d1c8d9248cFdDfA09b70C71c5393](https://etherscan.io/address/0xACB886b75D76d1c8d9248cFdDfA09b70C71c5393)
-- L2OutputOracleProxy: [0xdDa53E23f8a32640b04D7256e651C1db98dB11C1](https://etherscan.io/address/0xdDa53E23f8a32640b04D7256e651C1db98dB11C1)
-- OptimismPortal: [0x994e3B01D130944a3E67BFd3B8Fc73069b959FEc](https://etherscan.io/address/0x994e3B01D130944a3E67BFd3B8Fc73069b959FEc)
-- OptimismMintableERC20FactoryProxy: [0x5557408ab14013ce9Dbb300dE0D87D386BB09cb6](https://etherscan.io/address/0x5557408ab14013ce9Dbb300dE0D87D386BB09cb6)
-- L1StandardBridgeProxy: [0x3F6cE1b36e5120BBc59D0cFe8A5aC8b6464ac1f7](https://etherscan.io/address/0x3F6cE1b36e5120BBc59D0cFe8A5aC8b6464ac1f7)
-- L2OutputOracle: [0x59191bD38EBA4a642C9FEc308dc188731b229822](https://etherscan.io/address/0x59191bD38EBA4a642C9FEc308dc188731b229822)
-- L1CrossDomainMessengerProxy: [0xE3d981643b806FB8030CDB677D6E60892E547EdA](https://etherscan.io/address/0xE3d981643b806FB8030CDB677D6E60892E547EdA)
-- AddressManager: [0xF2dc77c697e892542cC53336178a78Bb313DFDC7](https://etherscan.io/address/0xF2dc77c697e892542cC53336178a78Bb313DFDC7)
-- L1CrossDomainMessenger: [0x237853621998a33Fa5B9B820592F4c6f4c158c12](https://etherscan.io/address/0x237853621998a33Fa5B9B820592F4c6f4c158c12)
-- ProxyAdmin: [0x0d9f416260598313Be6FDf6B010f2FbC34957Cd0](https://etherscan.io/address/0x0d9f416260598313Be6FDf6B010f2FbC34957Cd0)
-- L1ERC721BridgeProxy: [0x5fF93263D5181b2A826f8c51d54BC0da2d20D50a](https://etherscan.io/address/0x5fF93263D5181b2A826f8c51d54BC0da2d20D50a)
-- OptimismPortalProxy: [0x8AdeE124447435fE03e3CD24dF3f4cAE32E65a3E](https://etherscan.io/address/0x8AdeE124447435fE03e3CD24dF3f4cAE32E65a3E)
-- OptimismMintableERC20Factory: [0x0640c9377a4fAC00225097EACbB0295f4D5fbd76](https://etherscan.io/address/0x0640c9377a4fAC00225097EACbB0295f4D5fbd76)
-- L1StandardBridge: [0xEEAfA156A5dd3811Ee0D9F91db57A77eA53A8d31](https://etherscan.io/address/0xEEAfA156A5dd3811Ee0D9F91db57A77eA53A8d31)
-- L1ERC721Bridge: [0xA67fc05D295d2Be6bC4cBfad4f880c1c58734212](https://etherscan.io/address/0xA67fc05D295d2Be6bC4cBfad4f880c1c58734212)
+- [Light Relay](/docs/build/bob-sdk/relay): [`0x9fe7ef727da3d79e0308ff43f31ea1d077ee9f41`](https://explorer.gobob.xyz/address/0x9fe7ef727da3d79e0308ff43f31ea1d077ee9f41)
+- [Gateway](/docs/build/bob-sdk/gateway): [`0xcc2c1d45A3ECeEdec364a6B9e537AE97Fa20bEa7`](https://explorer.gobob.xyz/address/0xcc2c1d45A3ECeEdec364a6B9e537AE97Fa20bEa7)
+- [Gateway](/docs/build/bob-sdk/gateway) Registry: [`0xAE6770a207E86FaE3b191564FA55ce7Bfee0Dde9`](https://explorer.gobob.xyz/address/0xAE6770a207E86FaE3b191564FA55ce7Bfee0Dde9)
 
 ### BOB Mainnet (L2)
 
+- Multicall3: [`0xcA11bde05977b3631167028862bE2a173976CA11`](https://explorer.gobob.xyz/address/0xcA11bde05977b3631167028862bE2a173976CA11)
 - WETH9: [`0x4200000000000000000000000000000000000006`](https://explorer.gobob.xyz/address/0x4200000000000000000000000000000000000006)
 - L2CrossDomainMessenger: [`0x4200000000000000000000000000000000000007`](https://explorer.gobob.xyz/address/0x4200000000000000000000000000000000000007)
 - L2StandardBridge: [`0x4200000000000000000000000000000000000010`](https://explorer.gobob.xyz/address/0x4200000000000000000000000000000000000010)
@@ -39,15 +27,44 @@
 - EAS: [`0x4200000000000000000000000000000000000021`](https://explorer.gobob.xyz/address/0x4200000000000000000000000000000000000021)
 - EASSchemaRegistry: [`0x4200000000000000000000000000000000000020`](https://explorer.gobob.xyz/address/0x4200000000000000000000000000000000000020)
 
-### Multicall3 (L2)
+### Ethereum (L1)
 
-- Multicall3: [`0xcA11bde05977b3631167028862bE2a173976CA11`](https://explorer.gobob.xyz/address/0xcA11bde05977b3631167028862bE2a173976CA11)
+- SystemConfig: [`0xaa0A1EfD35d6578ea6B5704dbc2c40B36A55B590`](https://etherscan.io/address/0xaa0A1EfD35d6578ea6B5704dbc2c40B36A55B590)
+- SystemConfigProxy: [`0xACB886b75D76d1c8d9248cFdDfA09b70C71c5393`](https://etherscan.io/address/0xACB886b75D76d1c8d9248cFdDfA09b70C71c5393)
+- L2OutputOracleProxy: [`0xdDa53E23f8a32640b04D7256e651C1db98dB11C1`](https://etherscan.io/address/0xdDa53E23f8a32640b04D7256e651C1db98dB11C1)
+- OptimismPortal: [`0x994e3B01D130944a3E67BFd3B8Fc73069b959FEc`](https://etherscan.io/address/0x994e3B01D130944a3E67BFd3B8Fc73069b959FEc)
+- OptimismMintableERC20FactoryProxy: [`0x5557408ab14013ce9Dbb300dE0D87D386BB09cb6`](https://etherscan.io/address/0x5557408ab14013ce9Dbb300dE0D87D386BB09cb6)
+- L1StandardBridgeProxy: [`0x3F6cE1b36e5120BBc59D0cFe8A5aC8b6464ac1f7`](https://etherscan.io/address/0x3F6cE1b36e5120BBc59D0cFe8A5aC8b6464ac1f7)
+- L2OutputOracle: [`0x59191bD38EBA4a642C9FEc308dc188731b229822`](https://etherscan.io/address/0x59191bD38EBA4a642C9FEc308dc188731b229822)
+- L1CrossDomainMessengerProxy: [`0xE3d981643b806FB8030CDB677D6E60892E547EdA`](https://etherscan.io/address/0xE3d981643b806FB8030CDB677D6E60892E547EdA)
+- AddressManager: [`0xF2dc77c697e892542cC53336178a78Bb313DFDC7`](https://etherscan.io/address/0xF2dc77c697e892542cC53336178a78Bb313DFDC7)
+- L1CrossDomainMessenger: [`0x237853621998a33Fa5B9B820592F4c6f4c158c12`](https://etherscan.io/address/0x237853621998a33Fa5B9B820592F4c6f4c158c12)
+- ProxyAdmin: [`0x0d9f416260598313Be6FDf6B010f2FbC34957Cd0`](https://etherscan.io/address/0x0d9f416260598313Be6FDf6B010f2FbC34957Cd0)
+- L1ERC721BridgeProxy: [`0x5fF93263D5181b2A826f8c51d54BC0da2d20D50a`](https://etherscan.io/address/0x5fF93263D5181b2A826f8c51d54BC0da2d20D50a)
+- OptimismPortalProxy: [`0x8AdeE124447435fE03e3CD24dF3f4cAE32E65a3E`](https://etherscan.io/address/0x8AdeE124447435fE03e3CD24dF3f4cAE32E65a3E)
+- OptimismMintableERC20Factory: [`0x0640c9377a4fAC00225097EACbB0295f4D5fbd76`](https://etherscan.io/address/0x0640c9377a4fAC00225097EACbB0295f4D5fbd76)
+- L1StandardBridge: [`0xEEAfA156A5dd3811Ee0D9F91db57A77eA53A8d31`](https://etherscan.io/address/0xEEAfA156A5dd3811Ee0D9F91db57A77eA53A8d31)
+- L1ERC721Bridge: [`0xA67fc05D295d2Be6bC4cBfad4f880c1c58734212`](https://etherscan.io/address/0xA67fc05D295d2Be6bC4cBfad4f880c1c58734212)
 
-### BOB Core Contracts (L2)
+## Testnets
 
-- tBTC Relay: [`0x9fe7ef727da3d79e0308ff43f31ea1d077ee9f41`](https://explorer.gobob.xyz/address/0x9fe7ef727da3d79e0308ff43f31ea1d077ee9f41)
+### BOB Sepolia (L2)
 
-## Testnets
+- WETH9: [`0x4200000000000000000000000000000000000006`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000006)
+- L2CrossDomainMessenger: [`0x4200000000000000000000000000000000000007`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000007)
+- L2StandardBridge: [`0x4200000000000000000000000000000000000010`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000010)
+- SequencerFeeVault: [`0x4200000000000000000000000000000000000011`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000011)
+- OptimismMintableERC20Factory: [`0x4200000000000000000000000000000000000012`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000012)
+- GasPriceOracle: [`0x420000000000000000000000000000000000000F`](https://bob-sepolia.explorer.gobob.xyz/address/0x420000000000000000000000000000000000000F)
+- L1Block: [`0x4200000000000000000000000000000000000015`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000015)
+- L2ToL1MessagePasser: [`0x4200000000000000000000000000000000000016`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000016)
+- L2ERC721Bridge: [`0x4200000000000000000000000000000000000014`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000014)
+- OptimismMintableERC721Factory: [`0x4200000000000000000000000000000000000017`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000017)
+- ProxyAdmin: [`0x4200000000000000000000000000000000000018`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000018)
+- BaseFeeVault: [`0x4200000000000000000000000000000000000019`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000019)
+- L1FeeVault: [`0x420000000000000000000000000000000000001a`](https://bob-sepolia.explorer.gobob.xyz/address/0x420000000000000000000000000000000000001a)
+- EAS: [`0x4200000000000000000000000000000000000021`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000021)
+- EASSchemaRegistry: [`0x4200000000000000000000000000000000000020`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000020)
 
 ### Ethereum Sepolia (L1)
 
@@ -83,21 +100,3 @@
 - SystemConfig: [`0xF0CC656eC1a7fE4ed5AfCBAe1516e1309D48a38C`](https://sepolia.etherscan.io/address/0xF0CC656eC1a7fE4ed5AfCBAe1516e1309D48a38C)
 - SystemConfigProxy: [`0x3974436Fa4BB4Deb5A04ace51A704B10FF5A1f25`](https://sepolia.etherscan.io/address/0x3974436Fa4BB4Deb5A04ace51A704B10FF5A1f25)
 - SystemOwnerSafe: [`0xD3cAf746F8464686730F70cA33C3083B7796B0E0`](https://sepolia.etherscan.io/address/0xD3cAf746F8464686730F70cA33C3083B7796B0E0)
-
-### BOB Sepolia (L2)
-
-- WETH9: [`0x4200000000000000000000000000000000000006`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000006)
-- L2CrossDomainMessenger: [`0x4200000000000000000000000000000000000007`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000007)
-- L2StandardBridge: [`0x4200000000000000000000000000000000000010`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000010)
-- SequencerFeeVault: [`0x4200000000000000000000000000000000000011`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000011)
-- OptimismMintableERC20Factory: [`0x4200000000000000000000000000000000000012`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000012)
-- GasPriceOracle: [`0x420000000000000000000000000000000000000F`](https://bob-sepolia.explorer.gobob.xyz/address/0x420000000000000000000000000000000000000F)
-- L1Block: [`0x4200000000000000000000000000000000000015`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000015)
-- L2ToL1MessagePasser: [`0x4200000000000000000000000000000000000016`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000016)
-- L2ERC721Bridge: [`0x4200000000000000000000000000000000000014`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000014)
-- OptimismMintableERC721Factory: [`0x4200000000000000000000000000000000000017`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000017)
-- ProxyAdmin: [`0x4200000000000000000000000000000000000018`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000018)
-- BaseFeeVault: [`0x4200000000000000000000000000000000000019`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000019)
-- L1FeeVault: [`0x420000000000000000000000000000000000001a`](https://bob-sepolia.explorer.gobob.xyz/address/0x420000000000000000000000000000000000001a)
-- EAS: [`0x4200000000000000000000000000000000000021`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000021)
-- EASSchemaRegistry: [`0x4200000000000000000000000000000000000020`](https://bob-sepolia.explorer.gobob.xyz/address/0x4200000000000000000000000000000000000020)