💊Digital Asset Standard (DAS) API
The most comprehensive and performant API for tokens, NFTs, and compressed NFTs on Solana.
What is DAS?
The Digital Asset Standard (DAS) API is an open-source specification and system that provides a unified interface for interacting with digital assets. The API supports fungible tokens, regular NFTs, and compressed NFTs. Some methods (e.g. "getAssetProof") are exclusively for compressed assets.
Endpoints
Helius' API is fully compatible with the shared OpenRPC specification. The API is exposed via our standard RPC endpoints:
Mainnet –
https://mainnet.helius-rpc.comDevnet –
https://devnet.helius-rpc.com
DAS API
The DAS endpoints enable users to query tokens and regular & compressed NFTs.
Get Asset – Get an asset by its ID.
Get Asset Batch – Get multiple assets by their IDs.
Get Asset Proof – Get Merkle proof for a compressed asset using its ID.
Get Asset Proof Batch – Get multiple asset proofs using their IDs.
Search Assets – Search for assets using a variety of parameters.
Get Assets by Owner – Get a list of assets owned by an address.
Get Assets by Authority – Get a list of assets with a specific authority.
Get Assets by Creator – Get a list of assets created by an address.
Get Assets by Group – Get a list of assets by a group key and value.
Get Signatures For Asset – Get a list of transaction signatures related to a compressed asset.
Get Token Accounts – Get information about all token accounts for a specific mint or an owner.
Get Nft Editions – Get information about all the edition NFTs for a specific master NFT.
Fungible Token Extension
Helius has extended the DAS API to support all tokens, including plain SPL tokens (without metadata) and Token22 (plus their extensions). Fungible token support is available through the getAssetsByOwner and searchAssets methods.
Inscriptions & SPL-20
You can optionally display inscription and SPL-20 token data with the showInscription flag. You can learn more about inscriptions and SPL-20 here. Please note that this is an experimental feature.
The Helius API does not verify SPL-20 tokens. Trade at your own risk. Please use the validator tool or join the Libreplex Discord channel for more information
Off-chain Indexing
Most NFT collections store additional metadata, such as attributes and image URLs, off-chain, typically on platforms like Arweave or IPFS. DAS enables you to retrieve this off-chain data alongside regular NFT data in a single API call by indexing all the off-chain information.
Please note that Helius cannot detect off-chain data mutations. The off-chain data will only be updated once the NFT is seen by the system again (e.g. when the NFT is modified on-chain). If you need the off-chain data for a collection to be re-indexed, please reach out to Helius support.
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