Create a token on Ethereum Mainnet

Ethereum essentials

Mainnet preparation checklist

• Wallet switched to your selected network — verify the network selector shows the right chain ID.
• ETH balance covering service price plus gas buffer (never the exact total).
• Configuration decisions finalized: identity, supply model, features, addresses.
• A gas tracker checked; deployment scheduled for a calm window.

Why projects choose Mainnet

• Deepest DEX liquidity and holder base.
• Every major wallet, aggregator and analytic supports ERC-20 natively.
• Etherscan verification is the trust language the ecosystem reads.
• Mainnet deployment signals seriousness that sidechains don't.

Mainnet vs testnet vs L2

Mainnet readiness checklist

1. Wallet on the selected network with service price + gas buffer.
2. Configuration finalized and reviewed aloud.
3. Marketing and treasury addresses confirmed from source.
4. Gas tracker checked; deployment window chosen.
5. Etherscan bookmarked for immediate verification.

Network verification habit

Glance at the network selector before every signature — it takes one second and prevents the most embarrassing deployment failure mode: transacting on the wrong chain. Make it muscle memory alongside checking amounts: network, action, cost, every time. Habits beat attention for repeated safety-critical steps.

Common Mainnet mistakes

The greatest-hits list: signing on the wrong network, deploying with an empty gas buffer, skipping verification, announcing before confirmation, and copy-pasting addresses from chat instead of Etherscan. Every item is preventable with the checklists on this page — and every item has cost real projects real money. Read the list once more before launch day.

Launch-day timeline

T-60 minutes: final review and gas check. T-0: sign and record the address. T+15: verify source, confirm wallet display. T+30: publish announcement with address, verification and settings. T+2h: liquidity live if promised, questions answered with links. Print it — launch days run on checklists, and Mainnet permanence rewards the prepared.

Chain ID 1 everywhere

Every wallet prompt, explorer URL and configuration screen should agree: Ethereum Mainnet, Chain ID 1. Mismatches — a wallet on the wrong network, an explorer link pointing elsewhere — are the most common Mainnet launch failure mode and entirely preventable. Make 'Chain ID 1 everywhere' the launch-day mantra, checked at each step, not assumed once.

Block explorer essentials

Learn three Etherscan views before launch: the token page (supply, holders, transfers), the contract tab (read live settings, verify source), and any transaction receipt (status, gas used, emitted events). These three views answer nearly every post-launch question — yours and your holders'. Bookmark all three for the deployed address on day one.

Ethereum addresses, briefly

Every actor is an address: your wallet, the marketing wallet, the token contract itself once deployed. Addresses are 42-character hex strings where one wrong character means a different destination — or nowhere. Copy from source, verify character-by-character, never retype. This single habit prevents the most expensive class of launch mistakes.

Testnet rehearsal (recommended)

Run the entire flow once on a testnet with worthless ETH: configure, review, sign, verify on the testnet explorer. The mechanics transfer exactly; only the stakes change. Rehearsal converts launch-day novelty into routine — and routine is where careful review happens.

Mainnet demands respect

Higher fees and zero forgiveness: review everything, deploy off-peak, verify immediately. Practice mechanics on a testnet if you are new, but perform final review against the real Mainnet flow — testnets forgive what Mainnet punishes. The security best practices guide covers the operational side.

Common questions

Related guides

• Ethereum token guide
• ERC-20 vs BEP-20
• Gas fees explained