curl -X POST "https://api.blockdb.io/v1/evm/transfers/token-transfers" \
-H "Authorization: Bearer $BLOCKDB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"chain_id": 1,
"from_block": 12345678,
"to_block": 12345999,
"from_address": "0000000000000000000000000000000000000000",
"to_address": "0000000000000000000000000000000000000001",
"token_address": "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"transfer_type": [2, 3],
"limit": 250,
"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,\"from_block\":12345678,\"to_block\":12345999,\"limit\":250,\"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/transfers/token-transfers");
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,\"from_block\":12345678,\"to_block\":12345999,\"limit\":250,\"cursor\":null}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/transfers/token-transfers", 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/transfers/token-transfers",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={
"chain_id": 1,
"from_block": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z",
"transfer_type": [2, 3],
"limit": 250,
"cursor": None
}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/transfers/token-transfers", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
chain_id: 1,
from_block: 12345678,
to_block: 12345999,
from_timestamp: "2025-10-29T00:00:00Z",
to_timestamp: "2025-11-11T00:00:00Z",
transfer_type: ["erc20", "erc721"],
limit: 250,
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,
"from_block": 12345678,
"to_block": 12345999,
"limit": 250,
"cursor": null
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/transfers/token-transfers", 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": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z"
},
"resolved_window": {
"from_block": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z"
},
"filters": {
"transfer_type": [
2,
3
],
"limit": 250,
"cursor": null
}
},
"data": [
{
"block_number": 12345680,
"block_time": "2025-10-29T00:01:23Z",
"tx_index": 5,
"log_index": 2,
"trace_address": null,
"from_address": "0000000000000000000000000000000000000000",
"to_address": "0000000000000000000000000000000000000001",
"token_address": "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"amount_raw": "1000000000000000000",
"amount_adj": "1.0",
"token_id": null,
"transfer_type": 2,
"_tracing_id": "0304000000000000000000000000000000000001",
"_parent_tracing_ids": [
"0102000000000000000000000000000000000001",
"0201000000000000000000000000000000000001"
],
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
},
{
"block_number": 12345681,
"block_time": "2025-10-29T00:02:00Z",
"tx_index": 12,
"log_index": 0,
"trace_address": null,
"from_address": "bc4ca0eda7647a8ab7c2061c2e118a18a936f13d",
"to_address": "0000000000000000000000000000000000000002",
"token_address": "bc4ca0eda7647a8ab7c2061c2e118a18a936f13d",
"amount_raw": "1",
"amount_adj": null,
"token_id": "1234",
"transfer_type": 3,
"_tracing_id": "0304000000000000000000000000000000000002",
"_parent_tracing_ids": [
"0102000000000000000000000000000000000001",
"0201000000000000000000000000000000000001"
],
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
}
],
"cursor": "next_page_cursor",
"page_count": 2
}
{
"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": "body",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_block",
"location": "body",
"reason": "required_with",
"expected": "provide either block range (from_block + to_block) or time range (from_timestamp + to_timestamp)"
}
]
},
"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 from_address, to_address, token_address, or transfer_type"
]
},
"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,
"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"
}
}
Transfers
Token Transfers
Query token transfer events (native ETH, ERC-20, ERC-721, ERC-1155) from transactions, internal transactions, and transfer logs.
POST
/
v1
/
evm
/
transfers
/
token-transfers
curl -X POST "https://api.blockdb.io/v1/evm/transfers/token-transfers" \
-H "Authorization: Bearer $BLOCKDB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"chain_id": 1,
"from_block": 12345678,
"to_block": 12345999,
"from_address": "0000000000000000000000000000000000000000",
"to_address": "0000000000000000000000000000000000000001",
"token_address": "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"transfer_type": [2, 3],
"limit": 250,
"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,\"from_block\":12345678,\"to_block\":12345999,\"limit\":250,\"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/transfers/token-transfers");
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,\"from_block\":12345678,\"to_block\":12345999,\"limit\":250,\"cursor\":null}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/transfers/token-transfers", 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/transfers/token-transfers",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={
"chain_id": 1,
"from_block": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z",
"transfer_type": [2, 3],
"limit": 250,
"cursor": None
}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/transfers/token-transfers", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
chain_id: 1,
from_block: 12345678,
to_block: 12345999,
from_timestamp: "2025-10-29T00:00:00Z",
to_timestamp: "2025-11-11T00:00:00Z",
transfer_type: ["erc20", "erc721"],
limit: 250,
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,
"from_block": 12345678,
"to_block": 12345999,
"limit": 250,
"cursor": null
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/transfers/token-transfers", 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": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z"
},
"resolved_window": {
"from_block": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z"
},
"filters": {
"transfer_type": [
2,
3
],
"limit": 250,
"cursor": null
}
},
"data": [
{
"block_number": 12345680,
"block_time": "2025-10-29T00:01:23Z",
"tx_index": 5,
"log_index": 2,
"trace_address": null,
"from_address": "0000000000000000000000000000000000000000",
"to_address": "0000000000000000000000000000000000000001",
"token_address": "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"amount_raw": "1000000000000000000",
"amount_adj": "1.0",
"token_id": null,
"transfer_type": 2,
"_tracing_id": "0304000000000000000000000000000000000001",
"_parent_tracing_ids": [
"0102000000000000000000000000000000000001",
"0201000000000000000000000000000000000001"
],
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
},
{
"block_number": 12345681,
"block_time": "2025-10-29T00:02:00Z",
"tx_index": 12,
"log_index": 0,
"trace_address": null,
"from_address": "bc4ca0eda7647a8ab7c2061c2e118a18a936f13d",
"to_address": "0000000000000000000000000000000000000002",
"token_address": "bc4ca0eda7647a8ab7c2061c2e118a18a936f13d",
"amount_raw": "1",
"amount_adj": null,
"token_id": "1234",
"transfer_type": 3,
"_tracing_id": "0304000000000000000000000000000000000002",
"_parent_tracing_ids": [
"0102000000000000000000000000000000000001",
"0201000000000000000000000000000000000001"
],
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
}
],
"cursor": "next_page_cursor",
"page_count": 2
}
{
"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": "body",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_block",
"location": "body",
"reason": "required_with",
"expected": "provide either block range (from_block + to_block) or time range (from_timestamp + to_timestamp)"
}
]
},
"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 from_address, to_address, token_address, or transfer_type"
]
},
"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,
"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:
0304 - Token Transfers - Description: Token transfer events (native ETH, ERC-20, ERC-721, ERC-1155) produced by TokenTransfersEngine from transactions, internal transactions, and transfer logs.
- CSV Sample: Download
- JSON Sample: Download
Parameters
Range Filters (mutually exclusive)
Starting block number (inclusive) for the query. Use with
to_block.Ending block number (inclusive) for the query. Use with
from_block.Starting timestamp (ISO-8601). If it falls between blocks, the next block after this timestamp is used. Use with
to_timestamp.Ending timestamp (ISO-8601). If it falls between blocks, the last block before this timestamp is used. Use with
from_timestamp.Validation rule:
You must provide either a block range or a time range.
Providing both results in HTTP 400.
Providing none results in HTTP 400.
You must provide either a block range or a time range.
Providing both results in HTTP 400.
Providing none results in HTTP 400.
Optional Filters
Filter by sender address (hex string, 20 bytes, no
0x prefix).Filter by recipient address (hex string, 20 bytes, no
0x prefix).Filter by token contract address (hex string, 20 bytes, no
0x prefix). Use null for native network token (e.g. ETH on Ethereum).Filter by transfer type integer code:
0=native_tx, 1=native_internal, 2=erc20, 3=erc721, 4=erc1155. Omit to return all types. See the TransferType enumeration.Pagination Controls
Recommended default
250; maximum 1000 to stay under ~10 MB responses.Pagination cursor from a prior call.
Response Fields
Meta
Echo of request metadata applied to the response.
EVM chain ID echoed from the request.
Pure echo of the window you sent (
from_block/to_block/from_timestamp/to_timestamp); unset bounds are 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.Resolved/echoed start block of the executed window.
Resolved/echoed end block of the executed window.
Resolved/echoed start timestamp (ISO-8601) of the executed window.
Resolved/echoed end timestamp (ISO-8601) of the executed window.
Filter parameters echoed from the request (addresses, transfer_type, pagination state, etc.).
Data
Each element mirrors the table columns (chain implied by
meta.chain_id). Primary key in SQL is _tracing_id.Block where the transfer occurred.
UTC timestamp of the block (ISO-8601).
Transaction index within the block.
Log index within the transaction receipt; null for native or internal tx transfers.
Trace address for internal tx transfers (e.g.
"0", "0.1"); null for log-based transfers.Sender address (hex string, 20 bytes, no
0x prefix).Recipient address (hex string, 20 bytes, no
0x prefix).Token contract address (hex string, 20 bytes); null for native ETH.
Raw amount in smallest unit (wei for native, raw uint256 for ERC-20/1155). String to preserve precision.
Decimal-adjusted amount; null if decimals unknown or NFT (ERC-721).
Token ID for ERC-721 and ERC-1155; null for native/ERC-20. String to preserve precision.
Transfer type as integer enum:
0=native_tx, 1=native_internal, 2=erc20, 3=erc721, 4=erc1155. See the TransferType enumeration.BlockDB lineage identifier (hex string, no
0x prefix).BlockDB lineage identifiers of the parent records.
Record creation timestamp, e.g.
"2025-11-11T18:42:15.123Z".Last update timestamp in the same format.
Envelope Fields
Cursor token for pagination.
Number of records returned in
data.curl -X POST "https://api.blockdb.io/v1/evm/transfers/token-transfers" \
-H "Authorization: Bearer $BLOCKDB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"chain_id": 1,
"from_block": 12345678,
"to_block": 12345999,
"from_address": "0000000000000000000000000000000000000000",
"to_address": "0000000000000000000000000000000000000001",
"token_address": "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"transfer_type": [2, 3],
"limit": 250,
"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,\"from_block\":12345678,\"to_block\":12345999,\"limit\":250,\"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/transfers/token-transfers");
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,\"from_block\":12345678,\"to_block\":12345999,\"limit\":250,\"cursor\":null}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/transfers/token-transfers", 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/transfers/token-transfers",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={
"chain_id": 1,
"from_block": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z",
"transfer_type": [2, 3],
"limit": 250,
"cursor": None
}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/transfers/token-transfers", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
chain_id: 1,
from_block: 12345678,
to_block: 12345999,
from_timestamp: "2025-10-29T00:00:00Z",
to_timestamp: "2025-11-11T00:00:00Z",
transfer_type: ["erc20", "erc721"],
limit: 250,
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,
"from_block": 12345678,
"to_block": 12345999,
"limit": 250,
"cursor": null
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/transfers/token-transfers", 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": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z"
},
"resolved_window": {
"from_block": 12345678,
"to_block": 12345999,
"from_timestamp": "2025-10-29T00:00:00Z",
"to_timestamp": "2025-11-11T00:00:00Z"
},
"filters": {
"transfer_type": [
2,
3
],
"limit": 250,
"cursor": null
}
},
"data": [
{
"block_number": 12345680,
"block_time": "2025-10-29T00:01:23Z",
"tx_index": 5,
"log_index": 2,
"trace_address": null,
"from_address": "0000000000000000000000000000000000000000",
"to_address": "0000000000000000000000000000000000000001",
"token_address": "c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"amount_raw": "1000000000000000000",
"amount_adj": "1.0",
"token_id": null,
"transfer_type": 2,
"_tracing_id": "0304000000000000000000000000000000000001",
"_parent_tracing_ids": [
"0102000000000000000000000000000000000001",
"0201000000000000000000000000000000000001"
],
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
},
{
"block_number": 12345681,
"block_time": "2025-10-29T00:02:00Z",
"tx_index": 12,
"log_index": 0,
"trace_address": null,
"from_address": "bc4ca0eda7647a8ab7c2061c2e118a18a936f13d",
"to_address": "0000000000000000000000000000000000000002",
"token_address": "bc4ca0eda7647a8ab7c2061c2e118a18a936f13d",
"amount_raw": "1",
"amount_adj": null,
"token_id": "1234",
"transfer_type": 3,
"_tracing_id": "0304000000000000000000000000000000000002",
"_parent_tracing_ids": [
"0102000000000000000000000000000000000001",
"0201000000000000000000000000000000000001"
],
"_created_at": "2025-11-11T18:42:15.123Z",
"_updated_at": "2025-11-11T18:42:15.123Z"
}
],
"cursor": "next_page_cursor",
"page_count": 2
}
{
"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": "body",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_block",
"location": "body",
"reason": "required_with",
"expected": "provide either block range (from_block + to_block) or time range (from_timestamp + to_timestamp)"
}
]
},
"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 from_address, to_address, token_address, or transfer_type"
]
},
"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,
"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 May 29, 2026
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