Buy & Swap Theta (THETA)

Two tokens, two jobs

Theta's official blog describes THETA as the governance token of the protocol, used to stake as a Validator or Guardian node. TFUEL is the operational token, which the blog compares to the gas of the protocol.

Keeping the two apart means everyday activity is paid for in TFUEL, while THETA stays focused on securing and steering the network.

It also means the cost of using the network and the reward for securing it are handled by different assets. People who only want to run applications or pay for services need TFUEL, while those who want to help secure the chain and have a say in it hold and stake THETA. Each group can plan around the token that matters to them, and the split keeps the staking asset from being spent away on everyday fees.^{[1], [2]}

A fixed supply of THETA

The blog states that the supply of THETA is fixed at one billion and will never increase. Nodes that stake THETA and do their work earn a proportional share of newly generated TFUEL instead.

This gives stakers a reward tied to taking part, without adding new THETA to the supply.^{[3], [4]}

Validators and Guardians

Theta uses two layers of nodes. Validator Nodes produce blocks, and Guardian Nodes seal blocks and act as a check on Validator Nodes that misbehave or stop working.

Theta's documentation sets the minimum stake for a Guardian Node at 1,000 THETA. That lower threshold opens the second layer of security to many more participants than the validator set alone.^{[8], [7]}

A blockchain and an edge network

Theta's documentation describes the network as a dual network: the Theta Blockchain and Theta EdgeCloud, which shares distributed GPU computing power.

The Edge Network is made up of over 10,000 active nodes around the world, according to the same page. The blockchain handles payments and rewards for that work.^{[5], [6]}

Smart contracts on mainnet

Theta's white paper records that Turing-complete smart contract support was enabled on the Theta Blockchain mainnet in the fourth quarter of 2020.

That lets developers build applications on the chain, with TFUEL paying for contract execution.^[11]

Staking in practice

The staking guide explains that Guardian staking can be done from the Theta Web Wallet or the Theta mobile app. Each staking transaction needs at least one TFUEL in the wallet to pay the fee.

That small detail is a direct result of the two-token design: staking uses THETA, but the transaction itself is paid in TFUEL.

It is a pattern worth remembering for any action on the network. Holding a little TFUEL alongside THETA keeps transfers, staking and contract calls working smoothly, while the THETA balance itself stays intact.^{[10], [9]}

How the node set develops

The documentation explains how Validator and Guardian Nodes work together, but the number of active nodes changes over time and is only visible on the live network. How the balance between the two layers will develop is UNKNOWN from public sources.

It is not predicted here.^[8]