Contracts
The five live matsnet addresses, the MUSD protocol addresses, and the precompiles.
Every address on this page is transcribed from packages/sdk/src/addresses.ts, where each was
verified on-chain before being committed. Do not hand-edit an address anywhere: a wrong one
silently sends funds nowhere.
Maren contracts
Maren is deployed to Mezo matsnet (chain 31611) only. Its mainnet addresses are all
zeroes because Maren is not on mainnet: a third-party audit is the deliberate gate. The
deployment block floor for matsnet is 14,911,471; on mainnet it is null, meaning there is
no history to read.
The five contracts, all source-verified on Blockscout. MarenRelayHub is the single trusted
forwarder; MarenPay.trustedForwarder() confirms it on-chain.
| Contract | Matsnet address (31611) | Mainnet (31612) |
|---|---|---|
| MarenVault | 0x46252B00AB59384518d9dB6D1f210ffF1221645b | 0x0000...0000 |
| MarenPay | 0xe475Ff919D54E055809f516E3bed8a5c7a101836 | 0x0000...0000 |
| MarenRelayHub | 0x22cC1Adfb0C91D9359746dE3F7E8cB7F2B8eA98C | 0x0000...0000 |
| MarenRegistry | 0x9e123Cdd0CD524812CF9F552d3FAB13d8143b77E | 0x0000...0000 |
| MarenEarn | 0xE3B02b215085B99Ce61E0F5ea9763Ac637aa7826 | 0x0000...0000 |
Deployment took 11 transactions from the deployer
0x54196397D6f01b48739dB3957257cB33cD341885, costing 11,688,063 gas in total, about 4 nano-BTC.
Every deploy hash resolves on explorer.test.mezo.org.
The standalone MarenForwarder is MarenRelayHub's base class and is deliberately not
deployed. Two trusted forwarders would be two independent ways to forge a sender, only one of
which is allowlisted. Always treat MarenRelayHub as the forwarder.
MUSD protocol contracts
Maren calls Mezo's already-deployed MUSD system rather than reimplementing any of it. All core
contracts are TransparentUpgradeableProxy, so always integrate against the proxy, never an
implementation address. All fifteen addresses were verified three independent ways: the
mezo-org/musd deployment artifacts, the OpenZeppelin proxy manifest, and live eth_getCode
plus functional calls.
| Contract | Address |
|---|---|
| MUSD | 0x118917a40FAF1CD7a13dB0Ef56C86De7973Ac503 |
| BorrowerOperations | 0xCdF7028ceAB81fA0C6971208e83fa7872994beE5 |
| BorrowerOperationsSignatures | 0xD757e3646AF370b15f32EB557F0F8380Df7D639e |
| TroveManager | 0xE47c80e8c23f6B4A1aE41c34837a0599D5D16bb0 |
| StabilityPool | 0x1CCA7E410eE41739792eA0A24e00349Dd247680e |
| PriceFeed | 0x86bCF0841622a5dAC14A313a15f96A95421b9366 |
| SortedTroves | 0x722E4D24FD6Ff8b0AC679450F3D91294607268fA |
| HintHelpers | 0x4e4cBA3779d56386ED43631b4dCD6d8EacEcBCF6 |
| InterestRateManager | 0xD4D6c36A592A2c5e86035A6bca1d57747a567f37 |
| GovernableVariables | 0x6552059B6eFc6aA4AE3ea45f28ED4D92acE020cD |
MUSD is not a proxy. Its EIP-1967 implementation slot reads all zeroes and its runtime code carries the ERC-2612 surface directly. The proxy rule above is about the core protocol contracts, not the token.
Precompiles and standard infrastructure
Two things a developer reaches for on other chains behave differently here. The BTC/USD oracle is a native chain precompile, not a deployed Chainlink or Pyth contract, and the ERC-4337 EntryPoint is deployed but inert.
| Component | Address | Status |
|---|---|---|
| BTC gas-token precompile | 0x7b7C000000000000000000000000000000000000 | Live |
| Price oracle precompile | 0x7b7c000000000000000000000000000000000015 | Live, Skip Connect |
| MEZO token precompile | 0x7B7c000000000000000000000000000000000001 | Live |
| Multicall3 | 0xcA11bde05977b3631167028862bE2a173976CA11 | Deployed both networks |
| Permit2 | 0x000000000022D473030F116dDEE9F6B43aC78BA3 | Deployed |
| x402 settlement proxy | 0x402085c248EeA27D92E8b30b2C58ed07f9E20001 | Live both networks |
| ERC-4337 EntryPoint v0.7 | 0x0000000071727De22E5E9d8BAf0edAc6f37da032 | Deployed and inert |
The price oracle precompile implements only decimals() and latestRoundData() from the
Chainlink AggregatorV3 interface; description() reverts. It reverts entirely above 60
seconds of staleness. Pyth is also deployed on Mezo but is not a usable substitute: measured
2026-09-07, BTC/USD had a publishTime 41.9 days old and returned $65,238 against a live oracle
price of $79,466 — 18% wrong — getPriceNoOlderThan(BTC/USD, 3600) reverts StalePrice, and
ETH/USD reverts outright, so it is not a usable substitute. Maren reads the precompile, the same
source MUSD's own liquidation engine uses. See Networks.
The ERC-4337 EntryPoint has processed zero UserOperations and no compliant bundler can run
against Mezo, because the RPCs lack debug_traceCall. It is recorded here only so nobody
rediscovers it and concludes 4337 is viable. It is not. See Gasless.