Antshares — now known as NEO — is one of the earliest public blockchain platforms to emerge from China. This guide explains its core technology, dual-token economy, market metrics, and the practical risks every user should know.
Antshares was founded in 2014 by Da Hongfei and Erik Zhang as China’s first open-source public blockchain[reference:0]. The project was rebranded to NEO in June 2017, shifting its focus toward building a “smart economy” that integrates digital assets, digital identity, and smart contracts[reference:2][reference:3].
Often referred to as the “Chinese Ethereum,” NEO shares many similarities with Ethereum but differentiates itself through its unique consensus mechanism, dual-token model, and support for multiple programming languages[reference:4]. The NEO blockchain enables developers to build decentralized applications (dApps) and issue digitized assets with a focus on regulatory compliance and enterprise use cases[reference:6].
One of NEO’s most distinctive features is its two-token system. The network has two native assets: NEO and GAS, each with a separate function[reference:7].
NEO is the governance token. It is non-divisible (only whole units exist) and represents ownership of the platform[reference:9]. Holding NEO gives users the right to vote on protocol changes, consensus nodes, and network parameters. NEO also generates GAS as a passive reward for holders.
GAS is the utility token that fuels the network. It is divisible (down to 0.00000001) and is used to pay for transaction fees, smart contract execution, and computational resources on the NEO blockchain[reference:12]. GAS is generated over time by holding NEO and has a controlled inflation schedule designed to release 100 million GAS over approximately 22 years.
This separation of governance and utility allows NEO to maintain a stable governance layer while GAS absorbs network usage costs — a design that many other smart-contract platforms have since adopted in various forms.
NEO uses a consensus algorithm called Delegated Byzantine Fault Tolerance (dBFT), invented by co-founder Erik Zhang. Unlike proof-of-work (Bitcoin) or proof-of-stake (Ethereum), dBFT relies on a small set of bookkeepers (consensus nodes) that are voted in by NEO holders[reference:16].
NEO’s long-term vision is to build a “smart economy” — a digital ecosystem where assets, identities, and contracts are managed on-chain in a compliant, programmable way[reference:20][reference:21].
The platform’s focus on regulatory friendliness and enterprise adoption has been a central theme since its Antshares days, making it distinct from many other permissionless blockchains.
In June 2021, NEO launched Neo N3 — a complete architectural upgrade that replaced the original Antshares/NEO Legacy chain[reference:24][reference:25]. N3 introduced on-chain governance, built-in oracles, improved smart contract performance, and a more efficient economic model[reference:26].
The Neo Legacy MainNet is scheduled to shut down permanently on October 31, 2025[reference:27][reference:28]. After that date, all on-chain operations — including asset transfers, token migrations, and contract deployments — will be disabled[reference:29]. Users who still hold assets on Neo Legacy must migrate them to Neo N3 before the deadline, otherwise they will be permanently lost[reference:30].
Official migration portals:
— NEO & GAS: migration.neo.org
— Other NEP-5 tokens: nepmigration.com[reference:31]
Never use third-party migration services. Always verify URLs and follow official announcements from the NEO team to avoid phishing scams.
NEO’s market metrics are publicly available and change constantly. The following data points are provided as a reference; always check live sources for current values.
Note: Prices, trading volumes, and market cap rankings fluctuate rapidly. For the most up-to-date data, refer to platforms like CoinMarketCap, CoinGecko, or major exchange tickers. Always verify information from multiple sources before making any decisions.
NEO is often compared to Ethereum, but the two platforms have meaningful differences in design, governance, and developer experience.
| Feature | NEO (Antshares) | Ethereum |
|---|---|---|
| Launch year | 2014 (as Antshares) | 2015 |
| Consensus | Delegated BFT (dBFT) | Proof-of-Stake (PoS) |
| Token model | Dual-token: NEO (governance) + GAS (utility) | Single-token: ETH (both governance and gas) |
| Smart contract languages | C#, Java, Python, Go, and more | Solidity (primary), Vyper |
| Transaction finality | Final (no forks) | Probabilistic (finality after multiple blocks) |
| Approximate TPS | Up to 10,000[reference:40][reference:41] | ~15–45 (base layer)[reference:42] |
| Ecosystem size | Smaller, enterprise-focused | Largest dApp and DeFi ecosystem[reference:43] |
While NEO offers technical advantages in speed and finality, Ethereum’s network effects and developer community remain substantially larger. The choice between them depends on project requirements, regulatory considerations, and language preferences.
Like all cryptocurrencies, NEO carries significant risks. Understanding these risks is essential before interacting with the network.
migration.neo.org and nepmigration.com[reference:52].Background: Alice participated in the Antshares ICO in 2016 and has held 500 NEO in a desktop wallet ever since. She rarely checks crypto news.
Discovery: In July 2026, Alice learns that the Neo Legacy network will shut down on October 31, 2025. She checks her wallet and confirms her NEO are on the Legacy chain.
Action: Alice visits the official NEO migration portal (migration.neo.org) and follows the instructions to migrate her 500 NEO to Neo N3. She uses Neon Wallet to complete the process securely. After migration, her NEO continue to generate GAS on the new chain.
Outcome: By acting before the deadline, Alice preserves her assets and avoids permanent loss. She also sets a calendar reminder to check for future network upgrades.
Antshares was the original name of the project, launched in 2014. It was rebranded to NEO in June 2017 to reflect a broader vision of a “smart economy”[reference:53]. The underlying technology has evolved significantly since the rebrand.
GAS is generated passively by holding NEO in a compatible wallet. The generation rate depends on the number of NEO held and the current block height. Some wallets automatically claim GAS, while others require manual claiming.
NEO is primarily a governance token that represents voting rights on the network[reference:54]. GAS is the utility token used for transaction fees. Regulatory classification varies by jurisdiction; this article does not provide legal or tax advice.
After the shutdown, block production on Neo Legacy will cease permanently, and all assets remaining on the chain will become inaccessible and permanently lost[reference:55]. There will be no way to recover them after the deadline.
NEO is native to the NEO blockchain. While there may be wrapped versions (e.g., NEO on Binance Smart Chain), the native token exists only on the NEO network. Always verify the chain before sending tokens.
dBFT is a variant of proof-of-stake but with a key difference: block producers (bookkeepers) are voted in by NEO holders and the consensus is achieved through a Byzantine Fault Tolerant algorithm, providing instant finality. In pure PoS, finality is usually probabilistic.
NEO has a governance model where NEO holders vote for bookkeeper nodes. However, the number of active bookkeepers is limited, and the foundation has historically played a significant role in network development. Users should evaluate the degree of decentralization against their own preferences[reference:57].
Live price, market cap, and trading volume data are available on platforms such as CoinMarketCap, CoinGecko, and major exchange tickers. Always cross-check multiple sources and be aware that data can vary slightly between platforms due to different methodologies.