ouro90D, issued by the vault manager operating the Ouroboros 90D Fixed Term Vault and tokenized by Accountable, is a tokenized active-strategy vault interest that represents proportional ownership of a 90-day fixed-term yield strategy [S1][S2].

Each token is a vault share tracking the underlying Yield strategy, with total return delivered through share-price appreciation rather than distributions; share price starts at 1.00 and rises as accrued yield compounds, with no rebasing, and withdrawal returns principal plus accrued yield together [S2][S3]. Fixed-term vaults maintain predetermined rates [S2]. Holders bear configurable performance, management, establishment, and prepayment fees, all minted as shares, with performance fees applied above a high-water mark and set per vault by the operator [S1][S3].

Vault shares represent proportional ownership of the vault and are issued using Accountable Vault-as-a-Service infrastructure, with the economic product operated by a separate institutional vault manager [S1][S2]. Access is configured per vault across permissionless, whitelisting, and KYC models, with KYC implemented as gasless EIP-712 signature verification and eligible jurisdictions selectable to comply with regional regulations [S4][S2]. Redemption follows ERC-7540 asynchronous patterns through a FIFO withdrawal queue, with instant fulfillment when liquidity is sufficient and fulfillment-time pricing otherwise [S1][S5]. No deposit insurance or loss-protection mechanism applies, and principal is not guaranteed [S2][S3].

Vault shares are ERC-4626 tokens extended with ERC-7540 for asynchronous deposit and redemption, natively issued on Monad and other supported networks including Ethereum, Arbitrum, and Citrea [S6][S1][S2]. Shares mint on deposit and redeem via a request-fulfill queue at fulfillment-time NAV, which is published and attested by a Data Verification Network publisher [S1][S3].

<Sources
  retrievedAt="2026-07-06"
  items={[
    { id: "S1", url: "https://docs.accountable.capital/accountable-documentation/vault-as-a-service.md" },
    { id: "S2", url: "https://docs.accountable.capital/accountable-documentation/yieldapp/yieldapp-faqs.md" },
    { id: "S3", url: "https://docs.accountable.capital/accountable-documentation/vault-as-a-service/accountable-nav.md" },
    { id: "S4", url: "https://docs.accountable.capital/accountable-documentation/vault-as-a-service/getting-started/quickstart/whitelisting-and-kyc.md" },
    { id: "S5", url: "https://docs.accountable.capital/accountable-documentation/vault-as-a-service/accountable-withdrawal-queue.md" },
    { id: "S6", url: "https://docs.accountable.capital/accountable-documentation/vault-as-a-service/architecture-overview.md" },
  ]}
/>


Tokenized funds

Counterparties use the platform to demonstrate assets and liabilities privately, enabling real-time financial verification across traditional and crypto-native markets

Accountable is the new standard for real-time financial verification that allows institutions to prove assets and liabilities privately. Built for both traditional and crypto-native markets, the platform enables counterparties to demonstrate financial health without exposing sensitive details like API keys, wallet addresses or trading strategies.

Institutions and counterparties seeking to prove financial health without exposing sensitive details such as API keys, wallet addresses, or trading strategies

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Accountable

Ouroboros 90D Fixed Term Vault (ouro90D) is a tokenized fund share issued by Accountable.

Each token is a direct claim on the issuer.

Professional investors, accredited investors, qualified purchasers, and institutions can subscribe and redeem in USDC, with a USDC 100,000 minimum and instant subscription settlement, and holders have a right to redeem at net asset value.

ouro90D has been issued on Monad as an ERC-4626 token since April 2026.

Ouroboros 90D Fixed Term Vaultouro90D