Liquid Staking & Restaking

Mantle Liquid Staking (mETH / cmETH): control-plane safety record

1 indexed control-plane surface for Mantle Liquid Staking (mETH / cmETH), pinned to a canonical Ethereum block and compared with what the protocol documents. Contract: 0xc26016f1166bE7b6c5611AAB104122E0f6c2aCE2.

Check it live (free)

The pre-flight API re-reads the controller, proxy and capabilities of a contract at the latest block. No key, no wallet.

Live pre-flight check

curl -s "https://pacta-x402.pacta.workers.dev/v1/check/preflight?chain=ethereum&address=0xc26016f1166bE7b6c5611AAB104122E0f6c2aCE2"

MCP: https://pacta-x402.pacta.workers.dev/mcp · tool pacta_check_preflight.

Core Proxy EIP-1967 Admin Slot & 3-Day UpgradeTimelock

Status: Protective delta
Target: Mantle UpgradeTimelock 0xc260…aCE2
Pinned block: Ethereum #26,403,121 · sprint 10
Block hash: 0x71acee23…ef9d1c

Observed on-chain. mETH (0xd5F7838F5C461fefF7FE49ea5ebaF7728bB0ADfa) & Staking (0xe3cBd06D7dadB3F4e6557bAb7EdD924CD1489E8f) EIP-1967 admin slots point to UpgradeTimelock (0xc26016f1166bE7b6c5611AAB104122E0f6c2aCE2) with getMinDelay() = 259200s (3 days) and PROPOSER_ROLE held by 6-of-14 Security Council Safe (0x4e59e778a0fb77fBb305637435C62FaeD9aED40f); mETH totalSupply = 217,256.94 mETH.

Documented. docs.mantle.xyz/meth/concepts/risk-management/upgradability-and-timelock.md previously noted 'The timelock is configured with a default delay of 0' (live deployment enforces stricter 3-day UpgradeTimelock).

Reproduce on any archive node

cast call 0xc26016f1166bE7b6c5611AAB104122E0f6c2aCE2 \
  "getMinDelay()" \
  --block 26403121 --rpc-url "$ETH_RPC_URL"
cast block 26403121 --field hash --rpc-url "$ETH_RPC_URL"
# expect 0x71acee2313a2c8eacd7d2c87667dc505310b3e9224d84eaebb71d5a890ef9d1c

For issuers

Issuing Mantle Liquid Staking (mETH / cmETH)? Reconcile & Anchor 24h Institutional Clearance

Reconcile documentation drift, verify multisig and timelock control planes across archive RPCs, prepare an upstream docs reconciliation PR, and anchor a Base EAS Aligned Attestation + Curator Diligence Dossier within 24 hours.

Request 24h Clearance ($5,000 USDC) →Request Commercial Invoice (PDF)