Securitize

Securitize is a tokenisation platform for real-world assets, serving asset managers, Web3 firms and DAOs, advisers and investors. Its Digital Securities Protocol (DS Protocol) is a permissioned framework for issuing and administering tokenised securities. The framework’s DSToken is ERC-20-compatible, while its registry, trust and compliance services enforce investor eligibility and transfer rules.

This library recognises DSTokens by their COMPLIANCE_SERVICE() ABI method. Lead discovery uses the DSToken Issue event on every supported EVM chain, then verifies candidates through that probe. This avoids an Ethereum-specific allow-list and prevents generic ERC-20 transfers from becoming vault leads. Issue identifies token issuance, not necessarily a cash subscription.

The adapter includes manual product metadata and notes for reviewed DSToken funds, including BlackRock BUIDL and BUIDL-I, Apollo ACRED, VanEck VBILL, the Securitize Tokenized AAA CLO Fund (STAC), Blockchain Capital BCAP, Mantle Index Four and the ARK Venture Fund (ARKVX). These products share the contract framework but have distinct investment strategies and NAV arrangements.

DSTokens are not ERC-4626: their fund NAV is not exposed through an ERC-4626 conversion method. The adapter reads ERC-20 totalSupply() and prices each product with one reviewed NAV source:

Fixed estimate – BUIDL and BUIDL-I target a USD 1 share value, so the adapter uses an explicitly labelled one-USD estimate.
RedStone push feed – ACRED, VBILL, STAC, HLSCOPE, BCAP and MI4 read a reviewed RedStone fundamental-value feed at each archive block.
Subscription settlements – ARKVX is sold through an ERC-7540-style AsyncFundVault with no onchain NAV oracle. Its NAV is rebuilt from the vault’s DepositGenerationFulfilled events, removing the 2% subscription fee that the settler includes in each settlement price.

Products without a reviewed NAV source are registered as leads without price history. Public subscriptions and redemptions are intentionally unsupported.

`eth_defi.tokenised_fund.securitize.vault`	Securitize Digital Securities Protocol tokenised-fund adapter.
`eth_defi.tokenised_fund.securitize.historical`	Historical reader for Securitize DSToken fund instruments.
`eth_defi.tokenised_fund.securitize.description`	Manual descriptions for Securitize DSToken funds.
`eth_defi.tokenised_fund.securitize.redstone`	Read Securitize fund NAV from RedStone on-chain push feeds.
`eth_defi.tokenised_fund.securitize.settlement`	Reconstruct Securitize fund NAV from asynchronous subscription settlements.