Bittensor (TAO) is the native asset of Bittensor (Subtensor), its own Proof-of-Authority, Substrate-based Layer-1 blockchain rather than an EVM or Solana chain, powering a decentralized network of machine-learning "subnets."
Each subnet runs a distinct AI-related task, and miners earn TAO for contributing useful machine-learning work that is scored and validated by other network participants. The network's mainnet has run since January 2021, with development stewarded by the Opentensor Foundation.
Bittensor differentiates itself by turning machine-learning contribution into an on-chain, incentive-scored activity rather than securing a general-purpose smart-contract platform.
Since the February 2024 "Dynamic TAO" (dTAO) upgrade, TAO holders can stake directly into any of 80+ subnets, each with its own tradable alpha token priced against TAO through an automated market maker; higher subnet staking translates into a larger share of network emissions.
TAO functions primarily as a utility and staking token, with staking also conferring a degree of governance influence rather than acting as a pure governance token.
Holders stake TAO to validators or delegate it to specific subnets to earn a share of block emissions, and the top TAO delegates ("Senators") gain voting power over network governance proposals. Since the dTAO upgrade, staking TAO into a subnet's constant-product AMM also determines exposure to that subnet's own alpha token. Over 70% of circulating TAO is reported staked or bonded to validators and subnets.
TAO has a fixed maximum supply of 21,000,000 tokens, modeled directly on Bitcoin's supply cap and halving schedule.
TAO launched via a fair-launch model in January 2021, when Bittensor's mainnet activated with no pre-mine, no ICO, and no private or venture-capital token sale.
All TAO has been distributed through network participation — mining and validating machine-learning contributions — since inception. The underlying project is reported to have been founded in December 2019, roughly a year before mainnet activation. Separately, the non-profit Opentensor Foundation has raised a cumulative $8 million, most recently in a round dated August 7, 2025, to fund foundation operations — distinct from the token's own no-premine launch.
TAO runs natively on Bittensor (Subtensor), its own Proof-of-Authority, Substrate-based Layer-1 blockchain, rather than on an EVM- or Solana-based chain.
Prior to February 2024, network validation was concentrated around a "Root Subnet" (Subnet 0) overseen by a limited set of roughly 64 validators. The Dynamic TAO (dTAO) upgrade then distributed validation and reward allocation across 80+ independently operating subnets, each maintaining its own validator and miner set that evaluates machine-learning task performance.
Bittensor was co-founded by Jacob Steeves and Ala Shaabana, who also co-founded the Opentensor Foundation to steward protocol development.
Steeves holds a Bachelor of Applied Science in Mathematics and Computer Science from Simon Fraser University and worked as a Software Engineer at Google from 2016 to 2018 before serving as CEO of Opentensor Foundation. Shaabana holds a PhD in Computer Science from McMaster University and was an Assistant Professor at the University of Toronto from 2020 to 2021. Steeves has since announced he is stepping down as CEO, with Shaabana also stepping aside from an executive role.
The Opentensor Foundation, a non-profit organization co-founded by Jacob Steeves and Ala Shaabana, is the entity most closely associated with maintaining and developing the Bittensor protocol.
The Foundation operates separately from TAO's fair-launch token distribution, which involves no foundation-held pre-mine or allocation. The Foundation itself has raised a cumulative $8 million in funding to support its operations, with the most recent round dated August 7, 2025.
Bittensor uses a bicameral, decentralizing governance structure: a three-member "Triumvirate" of Opentensor Foundation insiders formulates proposals, which a stake-weighted "Senate" of elected TAO delegates votes to adopt or reject.
The February 2024 dTAO upgrade extended community influence by letting TAO holders direct staking toward any of 80+ subnets. This structure faced a public dispute in April 2026, when a subnet operator alleged that co-founder Jacob Steeves retains centralized informal control despite the formal structure — an allegation Steeves denied and that remains unresolved.
Grayscale filed a Form S-1 on December 30, 2025 to convert its over-the-counter Bittensor Trust into a NYSE Arca-listed spot ETF under ticker GTAO. Bitwise has also filed for a competing spot TAO product, with a U.S. SEC decision window reported around August 2026.
Bittensor's first halving, cutting new issuance from approximately 7,200 to 3,600 TAO per day, took effect around December 14, 2025. Kraken confirmed a spot TAO listing referenced around June 25, 2026.
CertiK Skynet assigns Bittensor an overall score of 79.74 ("BBB," a partial rating) but lists it as "Not Audited By CertiK." It reports no third-party audit on record and a Code Security sub-score of only 10%.
No completed formal security audit of the core Bittensor/Subtensor protocol by a major audit firm has been identified. Holder concentration is described by third-party community analyses as meaningfully whale-concentrated, though no authoritative top-10/25/50 holder-supply percentage is available.