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POST
/
v1
/
evm
/
raw
/
function-results
curl -X POST "https://api.blockdb.io/v1/evm/raw/function-results" \
  -H "Authorization: Bearer $BLOCKDB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "chain_id": 1,
  "contract_addresses": [
    "1234567890abcdef1234567890abcdef12345678"
  ],
  "signature_hashes": [
    "0902f1ac"
  ],
  "from_block": 18934000,
  "to_block": 18935000,
  "from_timestamp": null,
  "to_timestamp": null,
  "latest_only": false,
  "limit": 200,
  "cursor": null
}'

{
  "meta": {
    "chain_id": 1,
    "request_window": {
      "from_block": 18934000,
      "to_block": 18935000,
      "from_timestamp": null,
      "to_timestamp": null
    },
    "resolved_window": {
      "from_block": 18934000,
      "to_block": 18935000,
      "from_timestamp": null,
      "to_timestamp": null
    },
    "filters": {
      "contract_addresses": [
        "1234567890abcdef1234567890abcdef12345678"
      ],
      "signature_hashes": [
        "0902f1ac"
      ],
      "latest_only": false
    }
  },
  "data": [
    {
      "contract_id": "1234567890abcdef1234567890abcdef1234567800121a0700",
      "block_number": 18934560,
      "block_time": "2024-04-01T12:34:56.000Z",
      "call_data": "0902f1ac",
      "signature_hash": "0902f1ac",
      "result": "0000000000000000000000000000000000000000000000000de0b6b3a7640000",
      "timestamp_utc": "2024-04-01T12:34:56.000Z",
      "_tracing_id": "0122000000000000000000000000000000000001",
      "_created_at": "2025-11-11T18:42:15.123Z",
      "_updated_at": "2025-11-11T18:42:15.123Z"
    }
  ],
  "cursor": null,
  "page_count": 1
}

​
Overview

  • Dataset ID: 0122 - Function Results
  • Description: On-chain function call return values versioned by block. Uses contract_id (26 bytes) to support metamorphic contracts; primary key is (contract_id, block_number, call_data).
  • CSV Sample: Download
  • JSON Sample: Download

​
Parameters

​
chain_id
number
required
Target EVM network. See the Chain enumeration for supported values.

​
Range Filters (mutually exclusive)

​
from_block
number
Starting block number (inclusive) for the query. Use with to_block.
​
to_block
number
Ending block number (inclusive) for the query. Use with from_block.
​
from_timestamp
string
Starting timestamp (ISO-8601). If it falls between blocks, the next block after this timestamp is used. Use with to_timestamp.
​
to_timestamp
string
Ending timestamp (ISO-8601). If it falls between blocks, the last block before this timestamp is used. Use with from_timestamp.
Validation rule:
Every request must include a bounding window — either a block range (from_block/to_block) or a time range (from_timestamp/to_timestamp). The two ranges are mutually exclusive.
contract_addresses and signature_hashes are refinement filters only and must be combined with a block or time range; they cannot be used on their own. function_results is a very large partitioned table, and selectors are low-selectivity (a single hot selector such as transfer() matches a huge fraction of rows), so an unbounded selector scan would time out.
Providing no bounding window results in HTTP 400.

​
Refinement Filters

​
contract_addresses
string[]
Filter by 20-byte contract addresses (hex string, no 0x prefix). Resolved to matching contract_id incarnations. Up to 256 entries. Requires a block or time range.
​
signature_hashes
string[]
4-byte function selectors (8 hex characters, no 0x prefix). Use to scope calls to specific function signatures. Requires a block or time range.

​
Pagination Controls

​
limit
number
default:"250"
Recommended default 250; maximum 1000 to stay under ~10 MB responses.
​
cursor
string
Opaque pagination cursor returned from a prior call.

​
Response Fields

​
Meta

​
meta
object
Echo of request metadata applied to the response.
​
meta.chain_id
number
EVM chain ID echoed from the request.
​
meta.request_window
object
Pure echo of the window you sent (from_block/to_block/from_timestamp/to_timestamp); unset bounds are null.
​
meta.resolved_window
object | null
The concrete window the query actually executed against, after resolving the request. For a block range on a time-bucketed endpoint (OHLC/VWAP/VWAP-aggregate/fiat VWAP), from_timestamp/to_timestamp hold the resolved timestamp window (and from_block/to_block echo your request). For a time range on a block-keyed endpoint, from_block/to_block hold the resolved block range (and the timestamps echo your request). null for selector-only requests (no window). No extra database work is done — these are the values the query already computed.
​
meta.resolved_window.from_block
number | null
Resolved/echoed start block of the executed window.
​
meta.resolved_window.to_block
number | null
Resolved/echoed end block of the executed window.
​
meta.resolved_window.from_timestamp
string | null
Resolved/echoed start timestamp (ISO-8601) of the executed window.
​
meta.resolved_window.to_timestamp
string | null
Resolved/echoed end timestamp (ISO-8601) of the executed window.
​
meta.filters
object
Filters echoed from the request (contract addresses, signature hashes, latest_only, limit).

​
Data

​
data
object[]
Function result records ordered by (contract_id, block_number DESC) unless latest_only is true. Each row matches the linked dataset; the first 20 bytes of contract_id are the deployed address — there is no separate contract_address field in the payload.
​
data.contract_id
string
Contract incarnation ID (hex string, 26 bytes, no 0x prefix): 20 bytes address + 4 bytes creation block + 2 bytes tx index. Use to join with contracts or for metamorphic disambiguation.
​
data.block_number
number
Snapshot block height when the value was observed.
​
data.block_time
string
Block time for the snapshot (ISO-8601).
​
data.call_data
string
Hex-encoded calldata sent to the contract. For simple getter functions, this is usually just the selector.
​
data.signature_hash
string
4-byte function selector (hex).
​
data.result
string | null
Hex-encoded return payload, or null. Decode using the ABI corresponding to signature_hash.
​
data.timestamp_utc
string
Observation timestamp (ISO-8601), aligned with the snapshot.
​
data._tracing_id
string
Internal lineage identifier (hex string, no 0x prefix) for cross-referencing with lineage endpoints.
​
data._created_at
string
Record creation timestamp (ISO-8601).
​
data._updated_at
string
Record last update timestamp (ISO-8601).

​
Envelope Fields

​
cursor
string | null
Pagination cursor to continue the query.
​
page_count
number
Number of records returned in this page.

​
Use Cases

  • Refresh oracle or configuration caches with latest per-block values.
  • Detect contract parameter changes by diffing consecutive results.
  • Seed lineage exploration by pairing selectors with their upstream transactions and logs.
curl -X POST "https://api.blockdb.io/v1/evm/raw/function-results" \
  -H "Authorization: Bearer $BLOCKDB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "chain_id": 1,
  "contract_addresses": [
    "1234567890abcdef1234567890abcdef12345678"
  ],
  "signature_hashes": [
    "0902f1ac"
  ],
  "from_block": 18934000,
  "to_block": 18935000,
  "from_timestamp": null,
  "to_timestamp": null,
  "latest_only": false,
  "limit": 200,
  "cursor": null
}'

{
  "meta": {
    "chain_id": 1,
    "request_window": {
      "from_block": 18934000,
      "to_block": 18935000,
      "from_timestamp": null,
      "to_timestamp": null
    },
    "resolved_window": {
      "from_block": 18934000,
      "to_block": 18935000,
      "from_timestamp": null,
      "to_timestamp": null
    },
    "filters": {
      "contract_addresses": [
        "1234567890abcdef1234567890abcdef12345678"
      ],
      "signature_hashes": [
        "0902f1ac"
      ],
      "latest_only": false
    }
  },
  "data": [
    {
      "contract_id": "1234567890abcdef1234567890abcdef1234567800121a0700",
      "block_number": 18934560,
      "block_time": "2024-04-01T12:34:56.000Z",
      "call_data": "0902f1ac",
      "signature_hash": "0902f1ac",
      "result": "0000000000000000000000000000000000000000000000000de0b6b3a7640000",
      "timestamp_utc": "2024-04-01T12:34:56.000Z",
      "_tracing_id": "0122000000000000000000000000000000000001",
      "_created_at": "2025-11-11T18:42:15.123Z",
      "_updated_at": "2025-11-11T18:42:15.123Z"
    }
  ],
  "cursor": null,
  "page_count": 1
}
Last modified on May 29, 2026