DocsReference

Networks and contract addresses

Monad mainnet (chain 143) and Monad testnet (chain 10143). Every live Nuntio address, with explorer links.

Every address below is copied from the project's verified constants, where each one was checked on chain. Resolve tokens by address only, never by name or symbol.

#Networks

	Mainnet	Testnet
Chain ID	143	10143
RPC	`https://rpc.monad.xyz`, `https://rpc1.monad.xyz`	`https://testnet-rpc.monad.xyz`
Explorer	monadscan.com, monadvision.com	testnet.monadexplorer.com
Nuntio app	nuntio.finance	testnet.nuntio.finance

Monad mainnet produces a block every 300 ms, and blocks are final after about 600 ms.

#Monad mainnet (143)

Deployed on 11 October 2026.

Contract	Address	Version	Deployed at block
`NuntioAccount` (Nuntio's main account, sealed)	`0xFA8B30f994c700976B6Ab575e77de78a161d4bdB`	2	112,451,134
`ApprovalQueue` (main account)	`0xA910cDebf85eBD52c28f3B0448C00b659B76eD25`	2	112,451,126
`ServiceRegistry`	`0x91bde96d1a9765E78619396234F015ACbBd32E60`	1	112,450,727
`NuntioTeamFactory`	`0x7D0691bba8EFA19F298BD03b004b6e1f34f71625`	1	112,451,279

The account's QUEUE() is the queue above, and the queue's ACCOUNT() is the account. The factory's TOKEN() is mainnet AUSD and its REGISTRY() is the registry above. Mainnet has no Sandbox and no CallerProbe, by decision.

Mainnet deployment transactions

Step	Block	Transaction
Deploy `ServiceRegistry`	112,450,727	`0xbe69aaee613d1d502f2b4e3a98f622d49049b6dc2c3710adce090f35768c956e`
Deploy `ApprovalQueue`	112,451,126	`0x76e39a541483eebba1d2659dd432e18d713f6fe18a3d8adf4e696ee49c52b0ee`
Deploy `NuntioAccount`	112,451,134	`0x738bd746eda70cb03a15e4c234b954ca92a32d0c6274a81431b0b1071842653b`
Bind queue to account	112,451,142	`0x34062f655801e1c2c563508c6310188f99f8e3d27ed5585bc7b6e544e4841368`
Seal `NuntioAccount`	112,451,149	`0x6415b5d9eb44661cf0b83586acb9a805db7b8a89bf9077af119f6c16d15a309f`
Deploy `NuntioTeamFactory`	112,451,279	`0xbee48e68c54f6be2c6ac6983b8019a9cc255b16d1453ebe0b55e74bfa29d5553`

#Mainnet operators

Role	Address
Protocol admin: owner of the registry and the main account	`0xb6417FCb40135c5e96808BdacBBA60cd16d14791`
Deployer and binder, single use, holds no role	`0x40B699A20CA1a0C71ca33bA181a938BE22eCd5aC`
Payee of the retired demo services (a wallet Nuntio holds)	`0x457e46E52bE1b4A05e3f49d07e58d845ec15CE31`
Former demo-service payee, until 12 October 2026. No mainnet payment reached it	`0x839Bd339CEAa5D7D0d8464c602E2f3C63ED616d9`

#Mainnet settlement asset

Token	Address	Decimals
AUSD (Agora)	`0x00000000eFE302BEAA2b3e6e1b18d08D69a9012a`	6

#Monad testnet (10143)

#Current

Contract	Address	Version
`NuntioAccount` (Nuntio's main account)	`0xa82ddeA9f0BF9F8C803B2f5905EdC6CDBE96aFc4`	2
`ApprovalQueue` (main account)	`0xFc3148D8AD23f7238a868d560eB1d7b11B6b1096`	2
`ServiceRegistry`	`0x19861745c5292a6911CbF6535e396d4DD18fef0D`	1
`NuntioTeamFactory`	`0x7C6Da7Bb115fa5c95989BFa0a84443F3fDf4D484`	1
`NuntioAccount` (the Sandbox, factory team #0)	`0x9210298BF0c2aA5ff9B52C0BeA83C43C8D8Ef4D1`	2
`ApprovalQueue` (the Sandbox)	`0x9b6D5872d2D111248669e6E6d475fa087f457EFF`	2
`CallerProbe` (a throwaway diagnostic)	`0xfddD1C5B54D5D70485FF640d8C7a75e5f13F7123`	none

The testnet main account was migrated to VERSION 2 on 27 September 2026, at block 65,974,230.

#Superseded

Kept on chain so their receipts still resolve in Activity. Do not send money to them.

Contract	Address	Status
`NuntioAccount`, VERSION 1, 21 September 2026	`0xf2AF09c6AE37CACFa1d555Cc621538ad877680d7`	Superseded, paused, empty
`ApprovalQueue`, VERSION 1, 21 September 2026	`0xdC727F9f9C3cA22d01ca0eE6565834453A32ffe9`	Superseded, paused
`NuntioAccount`, 18 September 2026	`0xd2E711980f94079Dd3fD0E092A3e85F6acf63c2B`	Superseded
`ApprovalQueue`, 18 September 2026	`0xcd27319547d77583BA2E555BcF9A0499C470EED6`	Superseded

#Testnet operators

Role	Address
Owner, protocol admin and deployer (one key on testnet)	`0x8a42eAF46D9A18e4CD82fA3D73A86F3654b80a7e`
Sandbox operator: a Privy server wallet that owns the Sandbox	`0x5fa30ea41fDd2ba1373448450533d48c385aCbcB`
Team grant wallet: sends each new testnet team $20 of test AUSD	`0x0023D9E0F771BE80b06813CD8b1F3dDEe557EA34`

#Testnet settlement asset

Token	Address	Decimals
AUSD (test)	`0xa9012a055bd4e0eDfF8Ce09f960291C09D5322dC`	6

The public test AUSD faucet is empty.

#Event signatures, VERSION 2

For anyone reading Nuntio's events directly. These are what the current accounts and queues emit.

Contract	Event	topic0
`NuntioAccount`	`Paid(address,bytes32,address,uint256,bytes32,string)`	`0x2161645beab728fa661a8959e8aace5516ea9223a6f08be74a7b95e28b789708`
`ApprovalQueue`	`RequestFiled(uint256,address,bytes32,address,uint256,bytes32,uint256,uint64,string)`	`0x0462f11ae0a46368c3bc73df5ef25478b0a51a30ab12f262edca1d97f7dc9e11`
`ApprovalQueue`	`RequestSettled(uint256,address,bytes32,address,uint256,bytes32,address)`	`0x115c799cf1ea983e0720e693f5fbc283116d03c3577e2fa7aae80372c9623e7f`
`ApprovalQueue`	`RequestApproved(uint256,address,uint256,uint64)`	`0x9940c5515c778c61c515f8ee62c1ad24e7dbb3469a11d5f34a9bae3fbb3155cf`
`ApprovalQueue`	`RequestDeclined(uint256,address)`	`0x06d69eed268bf3a13da04b1db3415c4f35fb04442a029b91d325c90d3ed6adcc`
`ApprovalQueue`	`RequestCancelled(uint256,address)`	`0xe0d7665e06e7db1fc500d66d4e3898d1d4a5533d7efe54b352fcdaa177c22783`

Paid is the same in VERSION 1. VERSION 1 queues on testnet emitted different RequestFiled and RequestSettled events.