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POST
debug_intermediateRoots
Robinhood Chain API method that computes the intermediate state roots for a given block by re-executing all transactions. For each transaction in the block, it returns the state root after that transaction was applied. This provides a detailed view of how the state trie evolves within a single block.
Learn how to deploy a node with the debug and trace API methods enabled.
This method is available for post-Nitro blocks only (block 22,207,815 and later). For pre-Nitro blocks, use the arbtrace_* methods instead.
This method re-executes all transactions in the block, which can be resource-intensive for blocks with many transactions.
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Parameters

  • hash — the hash of the block to compute intermediate roots for.
  • object — (optional) tracing configuration:
    • timeout — the timeout for the computation. Defaults to 5s. See Go time format for accepted values.
    • reexec — the number of blocks to re-execute to reconstruct historical state. Defaults to 128.

Response

  • result — an array of state root hashes (as hex strings), one per transaction in the block. Each root represents the state after the corresponding transaction was executed.

debug_intermediateRoots code examples

Body

application/json
id
integer
default:1
jsonrpc
string
default:2.0
method
string
default:debug_intermediateRoots
params
(string | Tracing options · object)[]

The hash of the block.

Response

200 - application/json

Returns intermediate state roots for each transaction in the block.

jsonrpc
string
id
integer
result
string[]
Last modified on July 18, 2026