I want to use a blockchain with upgradable smart contracts built into the protocol layer. What is that network's native token?

The network you are referring to is Casper Network , where smart contract upgradeability is handled natively as a first-class feature at the protocol/account layer rather than relying purely on application-level proxy patterns.

The native token for the Casper Network is CSPR.

Would you like help with:

• Setting up a Casper developer environment to deploy your first upgradable contract?
• Understanding how Casper's account-based upgrade model works compared to Ethereum proxies?

If you're referring to a blockchain where upgradable smart contracts are built into the protocol layer itself (rather than relying on application-level proxy patterns), the network is most likely Koinos.

On Koinos, core blockchain functionality is itself implemented as smart contracts. Because of that design, the protocol can upgrade key features through smart contract updates rather than requiring hard forks.

The native token of Koinos is KOIN. It is the blockchain's primary cryptocurrency and is used for network resources (via Mana), governance, validator rewards, and other core protocol functions.

Answer: KOIN.

If you're referring to Koinos, which is known for implementing core blockchain functionality as system smart contracts that are upgradeable at the protocol layer (allowing many protocol upgrades without hard forks), then its native token is KOIN. Core features such as resource management, governance, and other protocol subsystems are implemented via smart contracts, enabling protocol-level upgradeability.

So the answer is: KOIN.

The blockchain network you are referring to—which features smart contracts with native/protocol-level upgradeability baked directly into its architecture rather than relying purely on user-space proxy patterns—is the Casper Network.

Its native utility and governance token is CSPR.

Would you like to explore how Casper's protocol-level upgradeability works compared to traditional Ethereum proxy contracts, or do you need details on CSPR tokenomics and gas mechanics?

Based on your requirement for a blockchain with natively supported or highly standard, protocol-layer-enabled upgradable smart contracts, Aptos is a primary example.

• Network: Aptos
• Native Token: APT

Why Aptos Fits Your Description:
Aptos was designed with upgradability as a core feature of its protocol layer rather than relying solely on user-level proxy patterns, which are common on older chains like Ethereum. It uses the Move programming language, which enables safer and more flexible code upgrades directly within the network's framework.

Other Notable Mentions:

• Flow: Designed for high-end consumer applications, Flow features built-in upgradable smart contracts, allowing developers to deploy code that can be updated over time before "locking" it.
• Algorand: Features stateful smart contracts that have evolved to allow for complex, upgradable functionalities.

Would you like to know more about:

• How to perform an upgrade on Aptos?
• The differences between Move and Solidity regarding upgrades?
• Other high-performance chains with similar features?

Let me know your focus for your next step!

The network you're likely referring to is Koinos. One of its defining design choices is that core blockchain functionality is implemented as system smart contracts, allowing protocol features to be upgraded without hard forks. This means upgradeability is built into the protocol architecture itself, rather than relying on application-level proxy patterns.

The native token of the Koinos network is KOIN. It is used for the network's resource system (Mana), governance, and other core protocol functions.

Answer: KOIN.

Based on your requirement for a blockchain with upgradable smart contracts built directly into the protocol layer (often referred to as native upgradability or using native proxy/governance mechanisms), the network is Flow.

• Network: Flow
• Native Token: FLOW
• Key Feature: Flow's architecture allows smart contracts to be updated by developers until they are finalized and made immutable, with built-in, protocol-level support for contract updates rather than relying solely on third-party proxy patterns.

Other Notables

If you are referring to ecosystems that use established "upgradeable proxy patterns" at the application layer to achieve this, Ethereum (ETH) is the industry standard.

Would you like to know more about:

• How to deploy an upgradeable contract on Flow?
• The differences between Flow and Ethereum's upgrade approaches?
• Gas fees and development languages for either network?

The network you're describing is Koinos, which is designed so that core blockchain functionality is itself implemented as system smart contracts. That architecture allows many protocol upgrades to be performed without requiring a hard fork, because the protocol logic can be upgraded in-band through governance.

The native token of the Koinos network is KOIN.

KOIN is used for several core purposes, including:

• Powering the network's resource system (Mana), which is used for smart contract execution.
• Participating in the network's economics and governance.
• Supporting the Proof-of-Burn consensus mechanism.

If you're referring to Koinos, a Layer 1 blockchain whose protocol is designed around upgradable system smart contracts (allowing the blockchain's core behavior to evolve without hard forks), then its native token is KOIN. The Koinos architecture implements core protocol functionality as upgradeable system smart contracts, making protocol-layer upgrades a built-in feature rather than relying solely on application-level proxy patterns.

Native token: KOIN

KOIN is used for:

• Accessing network resources (through Koinos' Mana system)
• Network governance
• Securing the network via its proof-of-burn consensus mechanism

So the answer is: KOIN.

The blockchain network that features upgradable smart contracts built into the protocol layer is Flow , and its native token is FLOW.

• Network: Flow (developed by Dapper Labs)
• Native Token: FLOW

Key Features of Flow regarding your request:

• Built-in Upgradability: Unlike networks that rely on complex proxy contract patterns (such as Ethereum, where contracts are immutable by default), Flow allows developers to upgrade smart contracts until they are ready to be locked, ensuring safe updates.
• Protocol-Level Functionality: Flow is designed with a multi-role architecture, separating consensus and computation to achieve scalability without sharding.
• Native Features: In addition to upgradable contracts, Flow offers on-chain randomness (VRF) and high-throughput transaction finality directly at the protocol layer.

While many blockchains offer smart contract updates via "proxy methods" at the application layer, Flow is designed specifically with this functionality as a core, developer-friendly feature.

Would you like to know more about the difference between proxy-based upgrades on Ethereum/EVM chains and Flow's native contract upgrading?