YOUSD, issued by the Yield Optimizer (YO) Protocol smart contracts under the governance of onchain multisig administrators, is a tokenized yield-vault share that represents a pro-rata interest in a curated set of DeFi pools deployed against deposited U.S. dollar (USD) collateral [S1][S2].

The token tracks a USD-denominated yield strategy collateralized by USD Coin (USDC), with deposited assets deployed across vetted DeFi yield pools selected using Exponential.fi risk ratings and rebalanced daily [S3][S4][S2]. Returns accrue as the yoToken-to-asset exchange rate rises over time, compounding native yield automatically in-kind without a manual claim [S1][S4]. Deposit and withdrawal fees may apply within preset limits but are currently set to 0 [S1][S2].

The protocol describes itself as fully decentralized and non-custodial, with holders retaining control of assets from their own wallet; it is not issued by a single named corporate entity [S3][S2]. The holder's claim is an onchain ERC-4626 tokenized-vault share representing a pro-rata interest in vault allocations [S1][S4][S2]. Access requires connecting a self-custodial wallet and depositing supported assets [S3][S2]. Redemption keeps idle assets for instant withdrawals, with larger amounts queued up to 24 hours and fulfilled by authorized operators, returning the underlying USDC in-kind; there are no lock-up periods [S1][S4][S2]. Onchain governance runs through admin and operator multisigs behind a 48-hour timelock [S2].

yoTokens are ERC-4626 vault tokens, ERC-20 compatible, issued natively on Ethereum, Base, Arbitrum, and additional supported networks, with cross-chain availability via bridging [S1][S5][S2]. Deposits and redemptions route through a single Gateway contract, minting or burning yoTokens at the current exchange rate reflected within seconds [S1][S2]. A YO Oracle contract manages vault pricing through oracle-driven reporting [S2].

<Sources
  retrievedAt="2026-06-24"
  items={[
    { id: "S1", url: "https://docs.yo.xyz/protocol/yo-protocol" },
    { id: "S2", url: "https://docs.yo.xyz/llms-full.txt" },
    { id: "S3", url: "https://docs.yo.xyz/" },
    { id: "S4", url: "https://docs.yo.xyz/welcome-to-yo/faq" },
    { id: "S5", url: "https://docs.yo.xyz/protocol/risks" },
  ]}
/>


# Asset transfer count methodology

## 1. Overview

Asset transfer count is defined as the number of user transactions that move assets between addresses. It is utilized to reflect how frequently assets are used for payments, trading, or other onchain activity. The metric is calculated daily for each tracked asset across all supported blockchains. By aggregating these transfer events, a comprehensive view of onchain utility and transactional velocity is provided.

## 2. Data sources

- **EVM chain events**: ERC-20 token transfers, covering EVM-compatible chains (Ethereum, Arbitrum, Base, Polygon, Optimism, and others)
- **Solana instructions**: SPL token transfers
- **Other blockchain events**: Token transfers, withdrawals, and mint events across non-EVM chains (Solana, Aptos, Near, Polkadot Asset Hub, Stellar, and others)
- **Asset metadata**: Token addresses and decimal precision

## 3. Step-by-step calculation

### Component A: Extract and count raw transfer events

- **Purpose**: Identify and count individual token transfer events on a daily basis for each asset.
- **Logic**: On EVM-compatible chains, ERC-20 token transfers are parsed and counted. On Solana, SPL token transfers are parsed and counted. On Aptos, Near, and Ripple, token transfers and withdrawals are parsed and counted. On Stellar, classic token withdrawals and Soroban token transfers are aggregated. On Sui, token withdrawals and token mint events are aggregated. On Cardano, UTXO withdrawals and token mint events are aggregated. On Polkadot Asset Hub, `Transferred` events from the `assets` pallet are parsed.
- **Key fields**: `token_address`: The unique identifier of the token contract or asset. `block_timestamp`: The timestamp of the transaction block.

### Component B: Daily aggregation and zero-filling

- **Purpose**: Aggregate the daily transfer counts per asset and ensure continuous time-series data.
- **Logic**: The extracted transfer counts are aggregated daily for each token address on its respective chain. For days where no transfer activity is recorded for a tracked asset, the time series is filled with zero values to ensure a continuous daily record.
- **Key fields**: `timestamp`: The day of the activity. `asset_transfer_count`: The daily count of transfers per token on a specific chain.

### Component C: Final aggregation

- **Purpose**: Combine the daily transfer counts across all supported chains for each asset.
- **Logic**: The daily transfer counts from all individual chains are combined. Token addresses are mapped to unique asset identifiers using asset metadata. The final daily asset transfer count is then aggregated across all chains for each asset.
- **Key fields**: `timestamp`: The day of the activity. `asset_transfer_count`: The total aggregated daily transfer count for the asset.

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Number of transfer transactions involving the asset.

Asset transfer count

Tokenized funds

YO operates through smart contracts that automatically rebalance user deposits across selected DeFi protocols based on risk-adjusted yield metrics. The protocol uses Exponential.fi's protocol ratings to assess risk and optimize allocations. Users simply deposit their assets (such as USDC into yoUSD), and the protocol handles continuous rebalancing across chains and protocols. The platform is non-custodial and community-governed, with community members selecting which underlying protocols are included in the vaults.

The platform provides automated yield optimization through its multi-chain yield engine that tracks yields across different DeFi protocols and blockchains. YO offers vault products like yoUSD that allocate user deposits across multiple protocols, ensuring assets are always positioned in the most optimal yield opportunities while maintaining risk-adjusted returns.

YO (Yield Optimizer) is a decentralized yield optimization platform that operates as a secure multi-chain protocol, continuously rebalancing assets to deliver the best risk-adjusted yield in DeFi.

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Real-world asset (RWA) issuers

Yield Optimizer

Yield Optimizer USD (YOUSD) is a tokenized fund share issued by Yield Optimizer.

The fund is open-ended and invests in crypto assets.

Retail investors, professional investors, accredited investors, qualified investors, qualified purchasers, and institutions can mint and redeem directly with Yield Optimizer in USDC, and holders have a right to redeem at net asset value with same- or next-business-day settlement.

YOUSD has been issued on Base as an ERC-4626 token since April 2025.

Yield Optimizer USDYOUSD