Six layers of precision. One number that never lies.
Every calculation is deterministic, open-source, and reproducible by anyone with public market data. No black boxes. No manual overrides.
01
Universe
🔍
Clean the universe
Stablecoins, wrapped tokens, and coins with under $1M daily volume are stripped out before a single calculation runs. What remains is 100 genuinely liquid crypto assets — the real market, not the noise.
150 fetched → 100 selected
02
Weighting
⚖️
Weight by size, cap Bitcoin
Each coin's influence is proportional to its market cap — exactly like the S&P 500. Bitcoin is hard-capped at 35% maximum weight so the index reflects 100 assets, not just one. Overflow redistributes proportionally to the rest.
BTC cap: 35% · MSCI methodology
03
Timeframes
📈
Blend three time horizons
A single day's price action is noise. MEAN100 blends 50% weight on 24h, 30% on 7-day, and 20% on 30-day changes — then clips each at ±30% to prevent corrupted data from contaminating the signal.
50% · 30% · 20% blend · ±30% clip
04
Outlier Shield
🛡️
Eliminate statistical outliers
LUNA collapsed 100% in 48 hours. Wash-traded tokens can pump 10,000% overnight. MEAN100 uses Median Absolute Deviation to detect and dampen these events before they corrupt the index. One crisis cannot move the whole market signal.
MAD-Winsorise · 3.5σ threshold
05
Smoothing
〰️
Smooth the signal
Raw price data has second-by-second noise — API glitches, thin-order-book ticks, stale prices from small exchanges. An exponential moving average (α=0.15) absorbs this noise while remaining responsive to genuine market momentum.
EMA α=0.15 · 85% memory
06
On-Chain
⛓️
Commit to the blockchain
Three independent oracle nodes submit the result. The smart contract computes the on-chain median, rejects any submission more than 25% from consensus, and enforces a 50% circuit breaker. The final price is immutable, verifiable, and manipulation-resistant.
2-of-3 quorum · Chainlink AggregatorV3
Universe
100 coins
Signal Blend
50/30/20
BTC Cap
≤ 35%
Outlier Shield
MAD 3.5σ
Smoothing
EMA α=0.15
Oracle
2-of-3
Token Distribution
100M MEAN. Fixed. No inflation.
Public Sale / DEX Liquidity30%
30,000,000 MEAN · Liquid at launch · Aerodrome pool
Private Raise20%
20,000,000 MEAN · 3-month cliff · 12-month linear vest
Ecosystem / Grants20%
20,000,000 MEAN · 24-month linear vest · No cliff
Team15%
15,000,000 MEAN · 6-month cliff · 24-month vest
Treasury / DAO10%
10,000,000 MEAN · Governance-controlled Safe multisig
Oracle Incentives5%
5,000,000 MEAN · 6-month linear · To node operators
TokenMEAN
Total Supply100,000,000
NetworkBase (L2)
StandardERC-20 + ERC20Votes
Launch Price~$0.02
FDV at launch~$2,000,000
Circ. supply at TGE40,000,000 (40%)
Transfer Tax0% (max 1% by DAO)
MintingDisabled post-deploy
Upgradeable?No. Non-upgradeable.
Oracle Security
Three nodes. One truth.
No single actor can manipulate the MEAN price. Consensus happens entirely on-chain.
🗳
2-of-3 Quorum
Three independent oracle nodes submit prices. Two must agree before any update is accepted. Compromising one node changes nothing.
On-chain
📊
Median, not mean
The contract computes the on-chain median of submissions. A rogue node submitting $50,000 when price is $237 gets ignored — the median barely moves.
Solidity median sort
🚫
±25% outlier rejection
Any submission deviating more than 25% from the group median is discarded automatically. A compromised node cannot move the price by more than this threshold.
Hard-coded constant
⚡
50% circuit breaker
Even with quorum, the contract rejects rounds where the finalised median would move more than ±50% from the last accepted price. Prevents flash-loan attacks.
Non-bypassable
Why Base?
⛽
$0.01 transaction fees
Oracle nodes submit every 5 minutes. On Ethereum mainnet that's $500+/day in gas. On Base it's under $5. The oracle network is economically sustainable.
🏦
Coinbase's chain
110M Coinbase users. Native integration path for exchange listing. Being on Base is the right position for an index product that needs institutional credibility.
🔗
Full EVM compatibility
Every contract deploys identically from the existing codebase. Uniswap V3, Aave, and Aerodrome are all live on Base with real liquidity.
Professional whitepaper, market health indicator, fear/momentum meter, landing page, interactive prototype.
Complete
Q1 2026
Private raise + audit
$2M private round closes. Smart contract security audit by a recognised firm. Deployment to Base Sepolia for final testing.
In Progress
Q2 2026
TGE + Base mainnet
Token Generation Event. Aerodrome liquidity pool seeded. Oracle nodes live. Chainlink Automation integration for permissionless oracle scheduling.
Upcoming
Q3 2026
DAO governance launch
MEAN token holders vote on protocol parameters. Community oracle node program opens. Exchange listing applications.
Planned
Q4 2026
Mean500 + sector tokens
Expand to 500 assets. Launch MEAN-DEFI, MEAN-AI, MEAN-L2 sector sub-tokens. Institutional API with FIX protocol.
Planned
Get MEAN
Buy the whole market.
Swap ETH, BTC, SOL, BNB, or any top coin for MEAN directly. Available on Aerodrome (Base network).
🔒
Token Generation Event
Launching Q2 2026
MEAN is not yet live. We are finalizing our smart contract audit and partner integrations before TGE. Join the waitlist to get early access and private round eligibility.
Available on Aerodrome (Base) at TGE · Contract deploying Q2 2026
Waitlist
Get early access, private round eligibility, and launch alerts.
✓ You're on the list — confirmation sent to your inbox.
Live Prices
Top 100 Coins
Fetching live market data…
Loading live prices from MEAN100…
Technical Whitepaper · v1.2 · March 2026
MEAN100 The Crypto Market Index
A cap-weighted, outlier-filtered, multi-oracle secured index of the top 100 liquid cryptocurrencies — expressed as a single on-chain token on Base.
🔗 Base Network (Chain ID: 8453)📄 ERC-20 + ERC20Votes🏛 100M fixed supply⚡ 60s data refresh
§ 1
Abstract
Traditional financial markets have index products — the S&P 500, FTSE 100, Nikkei 225. These instruments give investors broad market exposure without requiring active stock selection. Crypto has been missing an equivalent: a transparent, methodology-driven, tradeable index of the entire market.
MEAN100 is that index. It tracks the top 100 liquid cryptocurrencies by market capitalisation, computes a single weighted performance number every 60 seconds, and expresses that number as an on-chain token price on Base. Buying MEAN is equivalent to buying the entire top-100 crypto market in one transaction.
Core insight
The name MEAN100 is dual-purpose: it is literally the mathematical mean — a cap-weighted average — of the top 100 cryptocurrencies, and it positions the token at the centre of the market. Not a bet on one chain. Not a sector play. The whole thing.
§ 2
What Is the Mean Price of the Top 100?
A natural question: if you average the prices of the top 100 cryptocurrencies, what do you get? The answer depends critically on how you average.
Simple arithmetic mean (add all prices, divide by 100) is misleading. Bitcoin at ~$68,000 would dominate the calculation while a coin priced at $0.001 would contribute almost nothing, even if it has a large market cap. The arithmetic mean of raw prices is a useless number for a market index.
Cap-weighted mean (each coin's price weighted by its share of total market cap) is the correct approach — it is the same method used by the S&P 500, MSCI World, and every major financial index. This is what MEAN100 uses. The resulting number, the cap-weighted average price, is then adjusted by the MEAN100 index value to produce the token price.
Index Reference Price · Cap-Weighted Mean of Top 100
—
Fetching live data…
For context: the arithmetic mean (simple average of all 100 raw prices) would be pulled dramatically upward by Bitcoin and Ethereum. The cap-weighted mean is orders of magnitude more representative of where "the market" actually trades.
Cap-Weighted Mean = Σ (price_i × weight_i)
where weight_i = market_cap_i / Σ market_cap
(subject to BTC cap of 35% — excess redistributed proportionally)
This is the same weighting methodology as the S&P 500 float-adjusted market cap weight. The 35% single-asset cap mirrors MSCI index construction rules.
The MEAN100 token price = cap-weighted mean price × (1 + index_value/100). As the index value rises (positive market), the token price appreciates above the cap-weighted mean. As markets fall, it falls below. The index value is the performance signal; the token price is the investable instrument.
§ 3
Index Calculation Methodology
The index value is computed in six deterministic steps, each of which can be reproduced independently from public market data.
Step
Operation
Parameter
Purpose
1
Universe filter
vol > $1M/day
Remove stablecoins (USDT/USDC/DAI), wrapped tokens (wBTC/wETH), and illiquid assets. Ensures only genuine crypto-market signal enters.
2
Signal blend
50/30/20
50% weight on 24h change, 30% on 7-day, 20% on 30-day. Multi-timeframe blending reduces noise from single-day volatility while staying responsive to trends.
3
Clip extreme values
±30% per coin
No single coin can contribute more than ±30% to the blended signal regardless of actual move. Prevents LUNA-style events from dominating.
4
MAD-Winsorise
3.5σ
Cross-sectional Median Absolute Deviation filter. Outlier coins whose blended signals deviate more than 3.5 MADs from the median are clipped to that boundary. Handles wash-trading and API data errors.
5
Cap-weight
BTC max 35%
Market-cap proportional weights, with iterative redistribution above the 35% BTC cap. Identical to MSCI index construction. Prevents the index from being a Bitcoin proxy.
6
EMA smoothing
α = 0.15
Exponential moving average over rolling computations. Removes tick-level noise and API glitches. 15% of each new reading, 85% of prior state.
All Δ values are percentage changes. weight_i = mcap_i / Σmcap (after 35% BTC cap). I is expressed in percentage-point units (e.g. +3.71 = market up ~3.71% on a smoothed, weighted basis).
§ 4
Token Economics
MEAN is a fixed-supply ERC-20 token on Base. Its price tracks the MEAN100 index. Holding MEAN is equivalent to holding a portfolio that mirrors the cap-weighted performance of the top 100 cryptocurrencies.
Aerodrome pool seed price. Post-TGE price tracks MEAN100 index performance.
Circulating at TGE
40,000,000 (40%)
Public + private unlocked.
Transfer tax
0% (max 1% by DAO)
DAO governance vote required to activate.
Upgradeable
No
Non-upgradeable proxy. Code is final post-audit.
TGE date
Q2 2026
Dependent on audit completion.
§ 5
Oracle Architecture & Security
The on-chain MEAN price is maintained by a three-node oracle network. No centralised server can manipulate the price. The smart contract enforces consensus, outlier rejection, and circuit breakers entirely on-chain.
Mechanism
Specification
Security guarantee
Quorum
2-of-3 nodes must submit
Single node failure or compromise does not halt or corrupt the feed.
On-chain median
Solidity sort + median
A rogue node submitting an extreme value cannot shift the median by more than one slot.
Outlier rejection
±25% from group median
A compromised node's submission is discarded if it deviates >25% from peers.
Circuit breaker
±50% from prior accepted price
Even with quorum, rounds that would move price >50% are rejected. Prevents flash-loan exploits.
Update frequency
Every 60 seconds
Continuous coverage. Chainlink Automation used for permissionless scheduling post-TGE.
Interface
Chainlink AggregatorV3
Drop-in compatibility with all Chainlink-aware protocols (Aave, Compound, etc.).
Invariant
The oracle contract has no admin key, no pause function accessible by any single party, and no upgrade mechanism. Once deployed and audited, its behaviour is determined solely by on-chain logic and the 2-of-3 quorum rule. This is intentional and non-negotiable.
§ 6
Why Base?
The oracle network submits every 60 seconds. At Ethereum mainnet gas prices (~$8–15/tx), that is $480–$900 per node per day, or $1,400–$2,700/day across three nodes. This is economically unsustainable for a sub-$10M market cap project at launch.
Base (Coinbase's OP-Stack L2) charges approximately $0.001–0.01 per transaction. Three nodes submitting every 60s costs under $10/day total. The oracle network can operate indefinitely on oracle incentive token allocations alone.
Beyond economics: Base has 110M Coinbase users accessible through the exchange's native wallet, deep Aerodrome DEX liquidity (forked from Velodrome), full EVM compatibility with existing contracts, and is the natural institutional on-ramp for a product that needs exchange listing credibility.
§ 7
Governance
MEAN tokens carry ERC20Votes governance rights (OpenZeppelin v5 snapshot-based voting). The DAO launches in Q3 2026 after TGE. Token holders vote on:
Parameter
Default
DAO can change?
Transfer tax
0%
Yes · max 1% · requires supermajority
Oracle node operators
3 founding nodes
Yes · community node program
Ecosystem grant recipients
None
Yes · standard majority
Index universe expansion
Top 100 by mcap
Yes (future: Mean500, sector tokens)
Smart contract code
Locked post-audit
No · non-upgradeable
Total supply
100,000,000
No · minting disabled
Governance parameters including quorum, voting period, and multisig configuration will be published at TGE. The Treasury Safe multisig executes approved transactions until on-chain governance is fully operational.
§ 8
Roadmap
Quarter
Milestone
Status
Q1–Q3 2025
Index engine, backend API, multi-oracle aggregator, auto-rebalancing, React dashboard
Complete
Q4 2025
Whitepaper, landing page, health indicator, interactive prototype, live data engine
Investing in MEAN involves risks. The following is not exhaustive.
Risk
Mitigation
Market risk
MEAN tracks the entire top-100 market. If crypto broadly declines, MEAN declines. This is by design — it is an index, not a hedge.
Smart contract risk
Independent security audit before TGE. Non-upgradeable contract — no admin key can alter behaviour post-deploy.
Oracle manipulation
2-of-3 quorum + ±25% outlier rejection + ±50% circuit breaker. Three nodes must be simultaneously compromised to affect the price.
Data source risk
Multi-source fallback (MEAN100 primary → CoinGecko secondary). 5-minute stale cache before data is considered unavailable.
Liquidity risk
At TGE, Aerodrome pool is seeded from public sale allocation. Early liquidity may be thin; large trades will incur price impact.
Regulatory risk
Crypto regulation is evolving globally. MEAN token may be subject to securities regulations in certain jurisdictions. Seek independent legal advice.
Legal Disclaimer
This whitepaper is for informational purposes only and does not constitute financial, legal, or investment advice. MEAN is a utility/governance token. Past performance of crypto market indices is not indicative of future results. The project is pre-TGE and subject to change. Nothing in this document should be construed as a solicitation or offer to sell securities in any jurisdiction where such offer would be unlawful.
