# Into: GuardArena Bittensor's subnet 109 changed identity in early July 2026: the slot that ran as Academia now registers on-chain as GuardArena, pitched at AI compliance auditing. There is no readable code or docs to go on yet, so here is what the chain shows. // Compliance auditing, claimed on-chain --- ### What is GuardArena? GuardArena is the on-chain identity registered to subnet 109 as of July 2026. The owner's on-chain description reads: "AI guard models that read policies and conversations, then predict exactly which rules were broken. Decentralized compliance auditing for the EU AI Act era." In plain terms, that points at automated policy checking: models that take a set of rules plus a conversation or output, and flag which rules were broken. The framing ties it to the EU AI Act, the compliance regime pushing companies to audit how their AI systems actually behave. The slot was rebranded from "Academia" around July 1, 2026. The change shows up in the on-chain identity and was noted the same day by community subnet trackers, including SubnetRadar and the AlphaTerminal daily digest. The current owner declares a public repository at github.com/fx-integral/guardarena, under the same GitHub organization (fx-integral) that previously hosted the Academia repo. The repository's contents were not retrievable at the time of writing, and no separate documentation or product site is registered on-chain, so the specific division of work between miners and validators is not established here. We are not inferring it. On the market side, subnet 109's alpha token trades at about 0.00395 TAO, with a market cap near 5,700 TAO and roughly 1,640 TAO of depth in its liquidity pool. Its network emission share is currently 0%. Under Bittensor's price-based emission model a subnet's share scales with root_prop x EMA price x (1 - miner_burn); subnet 109's miner-burn setting is at 100%, and the (1 - miner_burn) term takes the network emission share to zero while that holds. Emission share is a network-level allocation, separate from the subnet's own pool trading. --- ### Risk Factors - **Limited public documentation:** the on-chain identity is claimed and a repository is declared, but its contents were not retrievable at the time of writing and no docs or product site are registered, so what GuardArena builds and how miners and validators are scored is not established here. - **Deregistration:** subnet 109's four-month network immunity has ended and its emission share is currently 0%, which keeps it exposed to Bittensor's automatic deregistration of the lowest-EMA-price non-immune subnet. - **Liquidity:** the pool is thin, near 1,640 TAO of root depth, so entries and exits carry meaningful slippage. --- We will revisit GuardArena with a full writeup once it publishes a readable repository or docs.