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state_getReadProof - JSON-RPC Method

Description​

Returns a proof for one or more storage keys at a given block hash. Proofs can be used to verify state off-chain.

Parameters​

ParameterTypeRequiredDescription
keysstring[]YesArray of storage keys
atstringYesBlock hash to prove against

Returns​

An object containing proof and at fields.

Request Example​

Create a read proof for the runtime :code key at a finalized block:

curl -s https://api-moonriver.n.dwellir.com/YOUR_API_KEY \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc":"2.0",
    "id":1,
    "method":"state_getReadProof",
    "params":[["0x3a636f6465"], "0x1849c7bc2c547b315fef716c6f2fb6f5e256da60482a013286caf975d035f766"]
  }'

The proof array contains SCALE-encoded nodes that verify the key’s value within the state root.