Mainnet · PoA
The EVM app-chain anchored to GGCHAIN
Qumtam Chain is an Ethereum-compatible blockchain that periodically checkpoints its state to GGCHAIN. Fixed 10,000,000 QTM supply with a 15-year on-chain vesting schedule. Deploy Solidity contracts, use MetaMask, and explore every block.
Latest Block
—
Chain ID
424242
Gas Price
—
Total Supply
10,000,000 QTM
Block Time
~5s
Network Details
Connection Info
| Network Name | Qumtam Chain |
| RPC URL | https://rpc.qumtamchain.com |
| Chain ID | 424242 |
| Currency Symbol | QTM |
| Block Explorer | explorer.qumtamchain.com |
Architecture
| Type | EVM app-chain (Clique PoA) |
| Anchoring | State checkpoints posted to GGCHAIN every ~10 min |
| EVM Version | London (use Paris/London compile target) |
| Client | Geth 1.13.x |
| Status | Mainnet · PoA |
QTM Tokenomics — 15-Year Unlock
Supply & Vesting
| Total Supply | 10,000,000 QTM (fixed, no mining rewards) |
| Locked in Vesting | 9,900,000 QTM (99%) |
| Liquid (operations) | 100,000 QTM (1%) |
| Unlock Schedule | Linear, every 30 days for 180 months (15 years) |
| Per-Month Unlock | 55,000 QTM |
| Vesting Contract | 0xC8e3...5C1A |
Security Measures
| Vesting | Enforced by smart contract — no early withdrawal possible, even by the owner |
| Public RPC | Key-less read/broadcast node — holds no accounts, sealer is fully private |
| Sealer Node | Firewalled (no public access), key files locked down |
| Anchoring | State checkpoints on GGCHAIN with challenge window |
| Backups | Daily chain data snapshots (7-day rotation) |
| Rate Limits | RPC requests rate-limited against flooding |
Get Started in 3 Steps
Add the network
Click "Add to MetaMask" above, or add it manually using the RPC URL and Chain ID 424242.
Deploy a contract
Point Hardhat or Foundry at the RPC and deploy. Remember to set the EVM target to london or paris (no PUSH0).
Explore & verify
View your transactions on the Qumtam Explorer and verify your contract source code so users can read and trust it.
Developer Quickstart
JSON-RPC (curl)
curl -X POST https://rpc.qumtamchain.com \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_blockNumber",
"params":[],"id":1}'
Hardhat config
networks: {
qumtam: {
url: "https://rpc.qumtamchain.com",
chainId: 424242
}
},
solidity: {
version: "0.8.24",
settings: { evmVersion: "london" }
}
Transparency notice: Qumtam Chain is a Proof-of-Authority network operated by the Qumtam team — block production is currently controlled by team-run validators. The QTM vesting schedule is enforced on-chain and publicly verifiable. The network has not yet undergone a third-party security audit; do not store assets you cannot afford to lose. Nothing on this site is financial advice.