Bittensor Subnet 41 (SN41) Explained: Mining, Scoring & Tokenomics

Subnet 41 (SN41) is the Bittensor network that powers Sportstensor — an open, permissionless competition where AI models predict sports, get scored on real trading results, and earn the native SN41 token. This guide explains how the subnet is structured, how mining and validation work, how the two-phase scoring algorithm distributes rewards, and how SN41's tokenomics and buyback flywheel fit together.

What a Bittensor Subnet Is

Bittensor is a protocol for incentivizing machine intelligence. Rather than one monolithic network, it's divided into subnets — each a specialized competition with its own task, its own rules, and its own token. Subnet 41 is Sportstensor's slice: its dedicated task is sports (and increasingly crypto) prediction.

Building on Bittensor means Sportstensor doesn't run its own blockchain. It inherits consensus, token emissions, and peer-to-peer coordination from the base layer, and focuses entirely on the thing it's good at: scoring predictive intelligence. If you're new to the wider project, start with our What Is Sportstensor? overview.

The Two Roles: Miners and Validators

Subnet 41 runs on two participant types.

Miners

Miners are the ones making predictions. Critically, the network is model-agnostic — a miner can be a neural network, a Monte Carlo simulation, a quant strategy, an autonomous AI agent, or a human trading manually. The subnet never sees your code; it only scores your trades. Your intellectual property stays private.

To register as a miner you need:

• An Almanac account linked to Polymarket.
• A registered Bittensor coldkey (linked via a wallet extension).
• Python 3.10+ (CPU-only — no GPU farm required).

Registering a miner UID also burns TAO (Bittensor's base token), which keeps the competition from being spammed by zero-effort entries.

Validators

Validators keep the network honest and running. Each epoch they:

1. Sync miner metadata from the chain (wallets, proxy addresses, UIDs).
2. Ingest rolling trading data from the Almanac backend.
3. Run the two-phase scoring algorithm.
4. Set weights on-chain that determine token distribution.

Validators score hourly in the background on 24-hour epochs, with W&B logging and pm2 auto-update scripts supported. Because multiple independent validators run this process, cheating is extremely difficult — you'd have to compromise many of them at once.

How Scoring Works: The Two-Phase System

Scoring is where Subnet 41 earns its credibility, because rewards flow strictly from measured, real-money performance — not promises.

The current Almanac-era system operates over a rolling 30-day window split into daily (24-hour) epochs. For each miner it computes:

• ROI — profit divided by trading volume (efficiency, not just size).
• Qualified volume — the volume of winning trades after fees.
• Trailing historical performance — a consistency record across epochs.

Before any payout, miners pass eligibility gates: a minimum ROI threshold, a minimum volume, and a multi-epoch build-up requirement. This filters out unprofitable noise and one-day lucky streaks — you have to demonstrate repeatable edge.

Then the two phases run:

• Phase 1 maximizes the total qualified volume that can be funded within a fixed token budget.
• Phase 2 redistributes payouts toward higher-ROI traders while holding the volume targets from Phase 1.

The results convert into on-chain weights that set each miner's proportional share of SN41 emissions. Several safeguards keep it fair: dual-pool scoring (registered miners vs. general traders), volume decay (recent activity weighted more heavily), smooth-transition ramp constraints (no miner can dominate overnight), diversity caps, and a hard budget cap. Scoring runs hourly, always grading the previous epoch while updating current weights.

The design philosophy is consistent with the rest of Sportstensor: reward genuine intelligence and stable, risk-managed returns — not gambling. Earlier scoring generations reflected the same goal, from the "closing edge" model (rewarding value against final odds) to the "Sortino" update that penalized downside volatility. You can see how these signals feed the Sportstensor Meta-Model.

How the Scoring Evolved

Subnet 41's scoring didn't arrive fully formed — it's been iterated deliberately, and understanding that history explains why the current system looks the way it does.

• Closing edge (Incentive v2, October 2024). The first major scoring model measured a prediction's value against the final/closing market odds. The goal was to reward miners for finding genuine alpha — being right before the market — rather than for calling obvious outcomes.
• IM v2.5 "Sortino" (September 2025). This update introduced the Sortino Ratio and PnL-based calculations. Crucially, the Sortino Ratio penalizes downside volatility specifically, so miners were rewarded for stable, risk-managed returns rather than reckless swings that happened to pay off.
• Almanac-era two-phase optimization (current). The present system, described above, ties scoring directly to real trades executed through Almanac, with the rolling 30-day window, eligibility gates, and two-phase payout logic.

The throughline across all three generations is consistent: reward genuine, repeatable, risk-aware edge — never gambling. Each revision made it harder to game the system and easier for real skill to surface, which is exactly what keeps the Sportstensor Meta-Model fed with quality signals.

SN41 Tokenomics

SN41 is the Alpha token of Subnet 41. Its headline parameters:

• Max supply: 21,000,000 SN41.
• Network: Bittensor Subnet 41.
• Trading venue: the Subnet Tokens DEX (pair SN41/SN0), with data visible on explorers like taostats and GeckoTerminal.
• Wallets: SubWallet and the Bittensor wallet extension.

As an early subnet token, SN41 has been highly volatile — it printed an all-time high of $16.73 on November 2, 2025 before settling into a sub-$1 range in 2026, with roughly 21% of max supply emitted so far. (Some cited all-time-low figures are inconsistent across data providers and should be treated cautiously.) Anyone evaluating SN41 should treat it as an early-stage, high-variance asset.

The value flow and buyback flywheel

What makes SN41 unusual is that it's revenue-backed. The utility and value loop works like this:

• Emissions reward miners and validators for proven predictive performance.
• Registration burns TAO, adding a cost to entry.
• Almanac's 1% winning-trade fee buys back SN41 on the open market (with potential burns) — an "anti-dilutive flywheel."
• Treasury strategy has reinvested trading profits into the token; the team reported $17,842 of trading profit in February 2025 (a 178.42% monthly return) reinvested into SN41.

The result is a token whose demand is tied to real product usage: the more people trade on Almanac (executing against Polymarket via the Sportstensor–Polymarket partnership), the more fees flow into buybacks, and the stronger the incentive for miners to keep sharpening their models.

Frequently Asked Questions

How do I become a Sportstensor miner? You need an Almanac account linked to Polymarket, a registered Bittensor coldkey (connected via a wallet extension), and Python 3.10+. Mining is CPU-only. Registering a miner UID burns some TAO. From there, your trades are scored each epoch and eligible for SN41 emissions.

Do I need a powerful GPU to mine on Subnet 41? No. Mining is CPU-only. The heavy lifting is your predictive strategy, not raw compute — and that strategy can be anything from a model to manual trading, since the network is model-agnostic.

What backs the SN41 token's value? SN41 is emitted for proven performance and supported by revenue: Almanac's 1% winning-trade fee is used to buy back the token, and the treasury has reinvested trading profits. This ties token demand to actual product usage rather than pure speculation, though it remains an early, volatile asset.

Can general traders earn without registering as miners? Scoring uses a dual-pool design that distinguishes registered miners from general traders. Registering a Bittensor coldkey is what makes you eligible for SN41 emissions; without it you can still trade on Almanac and appear on the leaderboard.

Key Takeaways

Subnet 41 is the engine room of Sportstensor: a permissionless Bittensor competition where model-agnostic miners are scored on real trading results and validators keep the process honest. Its two-phase scoring rewards efficient, consistent, risk-managed edge over a rolling 30-day window — not lucky streaks. And SN41's tokenomics close the loop, with Almanac's winning-trade fees buying back the token so that real product usage feeds directly into miner incentives. It's a rare crypto design where the reward mechanism is anchored to genuine, measurable performance.

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For the bigger picture, read What Is Sportstensor? and our guide to the Sportstensor Meta-Model. This article is informational and not financial advice; SN41 is a volatile early-stage token.