The Top 5 Crypto Assets In
Just One Token
$TOP5 is an index token issued by Indexfy that gives you diversified exposure to the top 5 crypto assets in the market. Assets are held in a vault where you can always verify holdings. No hidden slippage or execution risk inside your position.
Why Indexfy
A simpler, more transparent way to hold the top of the crypto market.
Instant diversification
One ERC-20 share token gives you exposure to BTC, ETH, XRP, SOL, and BNB, no juggling five separate positions across five separate wallets.
Fully transparent
Every asset price comes from a Chainlink oracle and every holding is a public onchain balance, the basket's composition and NAV are verifiable at any time, by anyone.
No swap risk in your position
Deposits and redemptions are in-kind meaning the vault never trades on your behalf. What you put in (or get back) is priced at oracle value, not whatever a pool happens to fill at.
Always redeemable
Non-custodial and permissionless for authorized addresses: burn your shares whenever you want for a proportional slice of everything the vault holds.
Index composition
Weights are set onchain and can drift with deposits. Figures below are illustrative starting targets.
index
Bitcoin BTC
via cbBTC
30%Ethereum ETH
via cbETH
30%XRP XRP
via cbXRP
18%Solana SOL
via Bridged SOL
14%BNB BNB
via Synthetic BNB
8%
How it works
A single onchain vault handles custody and accounting — you deposit and redeem the basket's own tokens directly, no swaps involved.
- 01
Connect your wallet
Open the app and connect any wallet supported by RainbowKit on the Base network.
- 02
Deposit your assets
Contribute any combination of the basket's own tokens (cbBTC, cbETH, cbXRP, bridged SOL, sBNB) directly), valued at their oracle price, no swaps, no fixed ratio required.
- 03
Hold TOP5 shares
You receive an ERC-20 share token representing your slice of the basket, track it in any wallet.
- 04
Redeem anytime
Burn your shares to receive a proportional slice of everything the vault currently holds.
Transparent, one-time fees
No expense ratio, no annual management fee, no hidden cut for simply holding. The only cost is a flat 0.2% each way, and it's enforced onchain — not a number in a prospectus.
0.2%
Deposit fee
Taken once, when you deposit.
0.2%
Redeem fee
Taken once, when you redeem.
0%
Custody fee
No management fee, no AUM drag, ever.
Most index funds and ETFs charge an ongoing expense ratio just for holding the position — a recurring cut of your balance, every year, whether the market is up or down. Indexfy doesn't: there's no fee for simply holding shares. The 0.2% deposit and redeem fees are set onchain today, adjustable by the protocol admin but hard-capped at 5% by the contract itself — and any change is a public transaction, not a policy update buried in fine print.
Half of every fee — 0.1% of the 0.2% — can flow to veINDY lockers instead of the treasury, pro rata by voting power.
Token contracts
The vault contract is itself the TOP5 ERC-20 share token, and INDY is a separate, fixed-supply ERC-20 — there's no other token contract to look for. Always verify addresses directly on Base before you interact with them.
Read the whitepaper
The full breakdown of the index methodology, rebalancing rules, fee structure, and protocol design, for anyone who wants more than the summary.
FAQ
- What chain does $TOP5 token run on?
- Right now, only on Base. But we plan to expand to other chains in the future.
- How do I get the assets to deposit?
- The vault doesn't swap on your behalf — you deposit the basket's own tokens (cbBTC, cbETH, cbXRP, bridged SOL, sBNB) directly, acquired however you like (a DEX, a bridge, a CEX withdrawal). sBNB is the one exception with its own acquisition path built into the app: mint it directly against a Chainlink BNB/USD price by depositing USDC collateral, since Base has no sufficiently liquid real BNB to hold. That makes BNB exposure synthetic rather than real custody, clearly the highest-risk leg of the index.
- How often do you perform rebalancing?
- Rebalances are only done every 3 months to allow users to get the upside of price increases but without corrupting the weights intended.
- What criteria do you use to determine the basket's composition?
- Basket composition is made by the top 5 crypto assets that are not stablecoins. Basket composition is evaluated every 3 months and changes are subject to liquidity ratios.