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
}'
#include <curl/curl.h>
#include <stdio.h>
#include <stdlib.h>
int main(void) {
CURL *curl = curl_easy_init();
if (!curl) return 1;
const char *token = getenv("BLOCKDB_API_KEY");
char auth_header[256];
snprintf(auth_header, sizeof(auth_header), "Authorization: Bearer %s", token ? token : "");
const char *payload = "{\"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}";
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, auth_header);
headers = curl_slist_append(headers, "Content-Type: application/json");
curl_easy_setopt(curl, CURLOPT_URL, "https://api.blockdb.io/v1/evm/raw/function-results");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
CURLcode res = curl_easy_perform(curl);
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
return res == CURLE_OK ? 0 : 1;
}
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main()
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("BLOCKDB_API_KEY"));
var payload = new StringContent(
"{\"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}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/raw/function-results", payload);
response.EnsureSuccessStatusCode();
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);
}
}
import os
import requests
response = requests.post(
"https://api.blockdb.io/v1/evm/raw/function-results",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={'chain_id': 1,
'contract_addresses': ['1234567890abcdef1234567890abcdef12345678'],
'cursor': None,
'from_block': 18934000,
'from_timestamp': None,
'latest_only': False,
'limit': 200,
'signature_hashes': ['0902f1ac'],
'to_block': 18935000,
'to_timestamp': None}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/raw/function-results", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"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
})
});
const data = await response.json();
console.log(data);
package main
import (
"fmt"
"net/http"
"os"
"strings"
)
func main() {
payload := strings.NewReader(`{
"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
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/raw/function-results", payload)
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", os.Getenv("BLOCKDB_API_KEY")))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
// Handle response
}
{
"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": "1234567890abcdef1234567890abcdef1234567800121a070000",
"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": "012200000000000000000000000000000001",
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
}
],
"cursor": null,
"page_count": 1
}
{
"error": {
"code": "BAD_REQUEST",
"http_status": 400,
"message": "The request contains invalid or missing parameters.",
"hint": "Validate all required parameters against the endpoint specification before retrying.",
"severity": "error",
"retryable": false,
"details": {
"invalid_parameters": [
{
"name": "chain_id",
"location": "query",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_timestamp",
"location": "query",
"reason": "invalid_format",
"expected": "ISO-8601 UTC timestamp, e.g. 2025-11-11T00:00:00Z"
}
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/home"
}
}
{
"error": {
"code": "UNAUTHORIZED",
"http_status": 401,
"message": "Invalid or missing API key.",
"hint": "Ensure you send 'Authorization: Bearer <API_KEY>' in every request to this endpoint.",
"severity": "error",
"retryable": false,
"details": {
"auth_scheme": "bearer",
"expected_header": "Authorization: Bearer <API_KEY>",
"provided_header": "Authorization: <REDACTED_OR_MISSING>",
"token_status": "invalid_or_missing",
"recommendation": "Regenerate the API key if you suspect it is expired or compromised."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/authorization"
}
}
{
"error": {
"code": "FORBIDDEN",
"http_status": 403,
"message": "Your API key does not have permission to access this endpoint.",
"hint": "Upgrade your subscription tier or request additional access.",
"severity": "warning",
"retryable": false,
"details": {
"required_plan": "production",
"your_plan": null,
"contact": "support@blockdb.io",
"recommendation": "Contact BlockDB Support Team via email support@blockdb.io."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "NOT_FOUND",
"http_status": 404,
"message": "The requested resource does not exist.",
"hint": "Verify the API endpoint",
"severity": "warning",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "PAYLOAD_TOO_LARGE",
"http_status": 413,
"message": "The requested response exceeds the maximum allowed size of 10 MB.",
"hint": "Reduce the limit, narrow the block or time window, or apply additional filters before retrying.",
"details": {
"max_allowed_bytes": 10485760,
"estimated_response_bytes": 15360000,
"recommended_actions": [
"Decrease the 'limit' parameter value",
"Shorten the block range or time window",
"Filter by fewer pools or exchanges"
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/pagination-and-limits"
}
}
{
"error": {
"code": "CHAIN_NOT_SUPPORTED",
"http_status": 422,
"message": "chain_id=137 is not supported.",
"hint": "Use a supported chain_id. Consult the documentation for the list of available chains.",
"severity": "error",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "RATE_LIMIT_EXCEEDED",
"http_status": 429,
"message": "You have exceeded the allowed request rate.",
"hint": "Introduce client-side throttling or exponential backoff and respect the retry_after_seconds value.",
"details": {
"limit_rps": 1000, # configured rate limit
"current_estimated_rps": 73,
"retry_after_seconds": 2,
"limit_scope": "api_key",
"limit_window_seconds": 1
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/rate-limiting"
}
}
{
"error": {
"code": "INTERNAL_SERVER_ERROR",
"http_status": 500,
"message": "An unexpected server error occurred.",
"hint": "This error is not caused by your request. You may retry after a short delay.",
"severity": "critical",
"retryable": true,
"details": {
"incident_id": "INC-2025-11-11-123456",
"temporary_issue": true,
"expected_recovery_seconds": 5
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "SERVICE_UNAVAILABLE",
"http_status": 503,
"message": "The service is temporarily unable to handle the request.",
"hint": "The database connection pool is briefly saturated. Retry after a short delay.",
"severity": "warning",
"retryable": true,
"details": null,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
Primitives
Function Results
Read cached function execution outputs enriched with traces and gas usage.
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
}'
#include <curl/curl.h>
#include <stdio.h>
#include <stdlib.h>
int main(void) {
CURL *curl = curl_easy_init();
if (!curl) return 1;
const char *token = getenv("BLOCKDB_API_KEY");
char auth_header[256];
snprintf(auth_header, sizeof(auth_header), "Authorization: Bearer %s", token ? token : "");
const char *payload = "{\"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}";
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, auth_header);
headers = curl_slist_append(headers, "Content-Type: application/json");
curl_easy_setopt(curl, CURLOPT_URL, "https://api.blockdb.io/v1/evm/raw/function-results");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
CURLcode res = curl_easy_perform(curl);
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
return res == CURLE_OK ? 0 : 1;
}
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main()
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("BLOCKDB_API_KEY"));
var payload = new StringContent(
"{\"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}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/raw/function-results", payload);
response.EnsureSuccessStatusCode();
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);
}
}
import os
import requests
response = requests.post(
"https://api.blockdb.io/v1/evm/raw/function-results",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={'chain_id': 1,
'contract_addresses': ['1234567890abcdef1234567890abcdef12345678'],
'cursor': None,
'from_block': 18934000,
'from_timestamp': None,
'latest_only': False,
'limit': 200,
'signature_hashes': ['0902f1ac'],
'to_block': 18935000,
'to_timestamp': None}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/raw/function-results", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"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
})
});
const data = await response.json();
console.log(data);
package main
import (
"fmt"
"net/http"
"os"
"strings"
)
func main() {
payload := strings.NewReader(`{
"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
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/raw/function-results", payload)
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", os.Getenv("BLOCKDB_API_KEY")))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
// Handle response
}
{
"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": "1234567890abcdef1234567890abcdef1234567800121a070000",
"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": "012200000000000000000000000000000001",
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
}
],
"cursor": null,
"page_count": 1
}
{
"error": {
"code": "BAD_REQUEST",
"http_status": 400,
"message": "The request contains invalid or missing parameters.",
"hint": "Validate all required parameters against the endpoint specification before retrying.",
"severity": "error",
"retryable": false,
"details": {
"invalid_parameters": [
{
"name": "chain_id",
"location": "query",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_timestamp",
"location": "query",
"reason": "invalid_format",
"expected": "ISO-8601 UTC timestamp, e.g. 2025-11-11T00:00:00Z"
}
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/home"
}
}
{
"error": {
"code": "UNAUTHORIZED",
"http_status": 401,
"message": "Invalid or missing API key.",
"hint": "Ensure you send 'Authorization: Bearer <API_KEY>' in every request to this endpoint.",
"severity": "error",
"retryable": false,
"details": {
"auth_scheme": "bearer",
"expected_header": "Authorization: Bearer <API_KEY>",
"provided_header": "Authorization: <REDACTED_OR_MISSING>",
"token_status": "invalid_or_missing",
"recommendation": "Regenerate the API key if you suspect it is expired or compromised."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/authorization"
}
}
{
"error": {
"code": "FORBIDDEN",
"http_status": 403,
"message": "Your API key does not have permission to access this endpoint.",
"hint": "Upgrade your subscription tier or request additional access.",
"severity": "warning",
"retryable": false,
"details": {
"required_plan": "production",
"your_plan": null,
"contact": "support@blockdb.io",
"recommendation": "Contact BlockDB Support Team via email support@blockdb.io."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "NOT_FOUND",
"http_status": 404,
"message": "The requested resource does not exist.",
"hint": "Verify the API endpoint",
"severity": "warning",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "PAYLOAD_TOO_LARGE",
"http_status": 413,
"message": "The requested response exceeds the maximum allowed size of 10 MB.",
"hint": "Reduce the limit, narrow the block or time window, or apply additional filters before retrying.",
"details": {
"max_allowed_bytes": 10485760,
"estimated_response_bytes": 15360000,
"recommended_actions": [
"Decrease the 'limit' parameter value",
"Shorten the block range or time window",
"Filter by fewer pools or exchanges"
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/pagination-and-limits"
}
}
{
"error": {
"code": "CHAIN_NOT_SUPPORTED",
"http_status": 422,
"message": "chain_id=137 is not supported.",
"hint": "Use a supported chain_id. Consult the documentation for the list of available chains.",
"severity": "error",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "RATE_LIMIT_EXCEEDED",
"http_status": 429,
"message": "You have exceeded the allowed request rate.",
"hint": "Introduce client-side throttling or exponential backoff and respect the retry_after_seconds value.",
"details": {
"limit_rps": 1000, # configured rate limit
"current_estimated_rps": 73,
"retry_after_seconds": 2,
"limit_scope": "api_key",
"limit_window_seconds": 1
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/rate-limiting"
}
}
{
"error": {
"code": "INTERNAL_SERVER_ERROR",
"http_status": 500,
"message": "An unexpected server error occurred.",
"hint": "This error is not caused by your request. You may retry after a short delay.",
"severity": "critical",
"retryable": true,
"details": {
"incident_id": "INC-2025-11-11-123456",
"temporary_issue": true,
"expected_recovery_seconds": 5
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "SERVICE_UNAVAILABLE",
"http_status": 503,
"message": "The service is temporarily unable to handle the request.",
"hint": "The database connection pool is briefly saturated. Retry after a short delay.",
"severity": "warning",
"retryable": true,
"details": null,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
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
Range Filters (mutually exclusive)
number
Starting block number (inclusive) for the query. Use with
to_block.number
Ending block number (inclusive) for the query. Use with
from_block.string
Starting timestamp (ISO-8601). If it falls between blocks, the next block after this timestamp is used. Use with
to_timestamp.string
Ending timestamp (ISO-8601). If it falls between blocks, the last block before this timestamp is used. Use with
from_timestamp.Scoping 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 returns HTTP 400.Refinement Filters
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.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
number
default:"250"
Recommended default
250; maximum 1000 to stay under ~10 MB responses.string
Opaque pagination cursor returned from a prior call.
Response Fields
Meta
object
Echo of request metadata applied to the response.
number
EVM chain ID echoed from the request.
object
Pure echo of the window you sent (
from_block/to_block/from_timestamp/to_timestamp); unset bounds are null.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.number | null
Resolved/echoed start block of the executed window.
number | null
Resolved/echoed end block of the executed window.
string | null
Resolved/echoed start timestamp (ISO-8601) of the executed window.
string | null
Resolved/echoed end timestamp (ISO-8601) of the executed window.
object
Filters echoed from the request (contract addresses, signature hashes, latest_only, limit).
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.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.number
Snapshot block height when the value was observed.
string
Block time for the snapshot (ISO-8601).
string
Hex-encoded calldata sent to the contract. For simple getter functions, this is usually just the selector.
string
4-byte function selector (hex).
string | null
Hex-encoded return payload, or
null. Decode using the ABI corresponding to signature_hash.string
Observation timestamp (ISO-8601), aligned with the snapshot.
string
Internal lineage identifier (hex string, no
0x prefix) for cross-referencing with lineage endpoints.string
Record creation timestamp (ISO-8601).
string
Record last update timestamp (ISO-8601).
Envelope Fields
string | null
Pagination cursor to continue the query.
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
}'
#include <curl/curl.h>
#include <stdio.h>
#include <stdlib.h>
int main(void) {
CURL *curl = curl_easy_init();
if (!curl) return 1;
const char *token = getenv("BLOCKDB_API_KEY");
char auth_header[256];
snprintf(auth_header, sizeof(auth_header), "Authorization: Bearer %s", token ? token : "");
const char *payload = "{\"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}";
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, auth_header);
headers = curl_slist_append(headers, "Content-Type: application/json");
curl_easy_setopt(curl, CURLOPT_URL, "https://api.blockdb.io/v1/evm/raw/function-results");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
CURLcode res = curl_easy_perform(curl);
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
return res == CURLE_OK ? 0 : 1;
}
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main()
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("BLOCKDB_API_KEY"));
var payload = new StringContent(
"{\"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}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/raw/function-results", payload);
response.EnsureSuccessStatusCode();
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);
}
}
import os
import requests
response = requests.post(
"https://api.blockdb.io/v1/evm/raw/function-results",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={'chain_id': 1,
'contract_addresses': ['1234567890abcdef1234567890abcdef12345678'],
'cursor': None,
'from_block': 18934000,
'from_timestamp': None,
'latest_only': False,
'limit': 200,
'signature_hashes': ['0902f1ac'],
'to_block': 18935000,
'to_timestamp': None}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/raw/function-results", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"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
})
});
const data = await response.json();
console.log(data);
package main
import (
"fmt"
"net/http"
"os"
"strings"
)
func main() {
payload := strings.NewReader(`{
"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
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/raw/function-results", payload)
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", os.Getenv("BLOCKDB_API_KEY")))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
// Handle response
}
{
"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": "1234567890abcdef1234567890abcdef1234567800121a070000",
"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": "012200000000000000000000000000000001",
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
}
],
"cursor": null,
"page_count": 1
}
{
"error": {
"code": "BAD_REQUEST",
"http_status": 400,
"message": "The request contains invalid or missing parameters.",
"hint": "Validate all required parameters against the endpoint specification before retrying.",
"severity": "error",
"retryable": false,
"details": {
"invalid_parameters": [
{
"name": "chain_id",
"location": "query",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_timestamp",
"location": "query",
"reason": "invalid_format",
"expected": "ISO-8601 UTC timestamp, e.g. 2025-11-11T00:00:00Z"
}
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/home"
}
}
{
"error": {
"code": "UNAUTHORIZED",
"http_status": 401,
"message": "Invalid or missing API key.",
"hint": "Ensure you send 'Authorization: Bearer <API_KEY>' in every request to this endpoint.",
"severity": "error",
"retryable": false,
"details": {
"auth_scheme": "bearer",
"expected_header": "Authorization: Bearer <API_KEY>",
"provided_header": "Authorization: <REDACTED_OR_MISSING>",
"token_status": "invalid_or_missing",
"recommendation": "Regenerate the API key if you suspect it is expired or compromised."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/authorization"
}
}
{
"error": {
"code": "FORBIDDEN",
"http_status": 403,
"message": "Your API key does not have permission to access this endpoint.",
"hint": "Upgrade your subscription tier or request additional access.",
"severity": "warning",
"retryable": false,
"details": {
"required_plan": "production",
"your_plan": null,
"contact": "support@blockdb.io",
"recommendation": "Contact BlockDB Support Team via email support@blockdb.io."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "NOT_FOUND",
"http_status": 404,
"message": "The requested resource does not exist.",
"hint": "Verify the API endpoint",
"severity": "warning",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "PAYLOAD_TOO_LARGE",
"http_status": 413,
"message": "The requested response exceeds the maximum allowed size of 10 MB.",
"hint": "Reduce the limit, narrow the block or time window, or apply additional filters before retrying.",
"details": {
"max_allowed_bytes": 10485760,
"estimated_response_bytes": 15360000,
"recommended_actions": [
"Decrease the 'limit' parameter value",
"Shorten the block range or time window",
"Filter by fewer pools or exchanges"
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/pagination-and-limits"
}
}
{
"error": {
"code": "CHAIN_NOT_SUPPORTED",
"http_status": 422,
"message": "chain_id=137 is not supported.",
"hint": "Use a supported chain_id. Consult the documentation for the list of available chains.",
"severity": "error",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "RATE_LIMIT_EXCEEDED",
"http_status": 429,
"message": "You have exceeded the allowed request rate.",
"hint": "Introduce client-side throttling or exponential backoff and respect the retry_after_seconds value.",
"details": {
"limit_rps": 1000, # configured rate limit
"current_estimated_rps": 73,
"retry_after_seconds": 2,
"limit_scope": "api_key",
"limit_window_seconds": 1
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/rate-limiting"
}
}
{
"error": {
"code": "INTERNAL_SERVER_ERROR",
"http_status": 500,
"message": "An unexpected server error occurred.",
"hint": "This error is not caused by your request. You may retry after a short delay.",
"severity": "critical",
"retryable": true,
"details": {
"incident_id": "INC-2025-11-11-123456",
"temporary_issue": true,
"expected_recovery_seconds": 5
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "SERVICE_UNAVAILABLE",
"http_status": 503,
"message": "The service is temporarily unable to handle the request.",
"hint": "The database connection pool is briefly saturated. Retry after a short delay.",
"severity": "warning",
"retryable": true,
"details": null,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
Last modified on July 19, 2026
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