getAssetProof

Retrieve the cryptographic merkle proof for a compressed Solana NFT or token. This verification API returns the complete proof path required to validate a compressed digital asset’s existence and data integrity on the Solana blockchain without storing the full asset data on-chain. Essential for marketplaces, wallets, and applications that need to verify ownership and authenticity of compressed NFTs with the security guarantees of traditional on-chain assets but at a fraction of the storage cost.

POST

getAssetProof

cURL

curl --request POST \
  --url 'https://mainnet.helius-rpc.com/?api-key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getAssetProof",
  "params": {
    "id": "Bu1DEKeawy7txbnCEJE4BU3BKLXaNAKCYcHR4XhndGss"
  }
}
'

200

{
  "last_indexed_slot": 365750752,
  "root": "2o6Y6EiY3WXhoaEpei2pHmHLYnHDcEQVhgD89GrGHDBH",
  "proof": [
    [
      "EmJXiXEAhEN3FfNQtBa5hwR8LC5kHvdLsaGCoERosZjK",
      "7NEfhcNPAwbw3L87fjsPqTz2fQdd1CjoLE138SD58FDQ",
      "6dM3VyeQoYkRFZ74G53EwvUPbQC6LsMZge6c7S1Ds4ks",
      "A9AACJ5m7UtaVz4HxzhDxGjYaY88rc2XPoFvnoTvgYBj",
      "2VG5cKeBZdqozwhHGGzs13b9tzy9TXt9kPfN8MzSJ1Sm",
      "3E1uFze4pi6BnTZXMsQbeh3jQCeDi966Zax9aMbYgg2D",
      "Bx9PdctdWCeC1WfU6dwP49idsXCYhqyxbRLyLwwGhr61",
      "HSbJ8quT4vuXFgf5FnjzeUuFfAtLKsq6W1Frj8y1qrif",
      "GJMLzL4F4hY9yFHY1EY6XRmW4wpuNGeBZTiv7vM2mYra",
      "FYPtEiqmRx6JprHQvWeEWEuVp3WA7DPRCE4VbhFRVuAj",
      "6MJKrpnK1GbYsnEzwMRWStNGkTjAZF23NhzTQSQVXsD3",
      "HjnrJn5vBUUzpCxzjjM9ZnCPuXei2cXKJjX468B9yWD7",
      "4YCF1CSyTXm1Yi9W9JeYevawupkomdgy2dLxEBHL9euq",
      "E3oMtCuPEauftdZLX8EZ8YX7BbFzpBCVRYEiLxwPJLY2"
    ]
  ],
  "node_index": 16384,
  "leaf": "6YdZXw49M97mfFTwgQb6kxM2c6eqZkHSaW9XhhoZXtzv",
  "tree_id": "2kuTFCcjbV22wvUmtmgsFR7cas7eZUzAu96jzJUvUcb7",
  "burnt": "<unknown>"
}

Authorizations

api-key · string · query · required

Your Helius API key. You can get one for free in the dashboard.

Body

application/json

jsonrpc · enum<string> · default: 2.0 · required

The version of the JSON-RPC protocol.

Available options: 2.0

id · string · default: 1 · required

An ID to identify the request.

method · enum<string> · default: getAssetProof · required

The name of the DAS method to invoke.

Available options: getAssetProof

params · object · required

Show child attributes

Response

200

application/json

Successful response

last_indexed_slot · integer

All data up to and including this slot is guaranteed to have been indexed.

Example:

365750752

root · string

The root hash of the Solana state compression merkle tree that contains this compressed NFT.

Example:

"2o6Y6EiY3WXhoaEpei2pHmHLYnHDcEQVhgD89GrGHDBH"

proof · string[]

The array of merkle proof hashes needed to cryptographically verify this Solana compressed NFT exists in the tree.

node_index · integer

The position index of this compressed NFT in the Solana merkle tree structure.

Example:

16384

leaf · string

The leaf hash representing this compressed NFT's data in the Solana merkle tree.

Example:

"6YdZXw49M97mfFTwgQb6kxM2c6eqZkHSaW9XhhoZXtzv"

tree_id · string

The unique identifier of the Solana merkle tree where this compressed NFT is stored.

Example:

"2kuTFCcjbV22wvUmtmgsFR7cas7eZUzAu96jzJUvUcb7"

burnt · any