This workflow follows the HTTP Request → Postgres recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"active": true,
"connections": {
"Schedule Trigger": {
"main": [
[
{
"node": "GET TRANSACTIONS",
"type": "main",
"index": 0
}
]
]
},
"GET TRANSACTIONS": {
"main": [
[
{
"node": "GET HASH LAST TRX",
"type": "main",
"index": 0
}
]
]
},
"GET HASH LAST TRX": {
"main": [
[
{
"node": "LAST PROCESSED TRX",
"type": "main",
"index": 0
}
]
]
},
"LAST PROCESSED TRX": {
"main": [
[
{
"node": "NOT EQUAL HASH",
"type": "main",
"index": 0
}
]
]
},
"Telegram": {
"main": [
[
{
"node": "UPDATE HASH",
"type": "main",
"index": 0
}
]
]
},
"NOT EQUAL HASH": {
"main": [
[
{
"node": "Telegram",
"type": "main",
"index": 0
}
],
[
{
"node": "IF",
"type": "main",
"index": 0
}
]
]
},
"IF": {
"main": [
[
{
"node": "Telegram1",
"type": "main",
"index": 0
}
]
]
},
"Telegram1": {
"main": [
[
{
"node": "UPDATE NTF COUNT",
"type": "main",
"index": 0
}
]
]
}
},
"createdAt": "2024-02-16T10:56:35.909Z",
"id": "SkFhbaEH5IXQ3YbC",
"isArchived": false,
"meta": null,
"name": "ETHERSCAN",
"nodes": [
{
"parameters": {
"rule": {
"interval": [
{
"field": "minutes",
"minutesInterval": 1
}
]
}
},
"id": "9ea1b107-8038-40bc-912d-56338ab0c812",
"name": "Schedule Trigger",
"type": "n8n-nodes-base.scheduleTrigger",
"typeVersion": 1.1,
"position": [
740,
360
]
},
{
"parameters": {
"url": "https://api.etherscan.io/api",
"authentication": "genericCredentialType",
"genericAuthType": "httpQueryAuth",
"sendQuery": true,
"queryParameters": {
"parameters": [
{
"name": "module",
"value": "account"
},
{
"name": "action",
"value": "txlist"
},
{
"name": "address",
"value": "0x19370B033d5e5613a05449CD2404AB768Fd60615"
},
{
"name": "startblock",
"value": "0"
},
{
"name": "endblock",
"value": "99999999"
},
{
"name": "page",
"value": "0"
},
{
"name": "offset",
"value": "10"
},
{
"name": "sort",
"value": "desc"
}
]
},
"options": {
"redirect": {
"redirect": {}
}
}
},
"id": "d2c13ab2-a617-4494-9b0b-761eeb20dc35",
"name": "GET TRANSACTIONS",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.1,
"position": [
980,
360
],
"credentials": {
"httpQueryAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"include": "selected",
"includeFields": "result[0].hash",
"options": {}
},
"id": "dcc5e7c3-5bdf-4432-ae3a-9bb13f782ed2",
"name": "GET HASH LAST TRX",
"type": "n8n-nodes-base.set",
"typeVersion": 3.2,
"position": [
1200,
360
]
},
{
"parameters": {
"operation": "select",
"schema": {
"__rl": true,
"mode": "list",
"value": "public"
},
"table": {
"__rl": true,
"value": "etherscan_lst_trx",
"mode": "list",
"cachedResultName": "etherscan_lst_trx"
},
"limit": 1,
"options": {}
},
"id": "8641c28c-1d65-492c-9e2c-a3f18103d9aa",
"name": "LAST PROCESSED TRX",
"type": "n8n-nodes-base.postgres",
"typeVersion": 2.3,
"position": [
1400,
360
],
"credentials": {
"postgres": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"chatId": "5217553853",
"text": "=\ud83d\udcb0New TRX\ud83d\udcb0 NTF #{{1}}\n\n\u26a0\ufe0fOn your Wallet new transaction, please check\u26a0\ufe0f\n\n\ud83d\udcb8 Hash: {{ $('GET HASH LAST TRX').item.json.hash }}\n\n\ud83e\ude99Wallet:0x19370b033d5e5613a05449cd2404ab768fd60615 ",
"additionalFields": {
"appendAttribution": false
}
},
"id": "1f9ca6a5-e23e-4a5a-b9af-d0c9d3188beb",
"name": "Telegram",
"type": "n8n-nodes-base.telegram",
"typeVersion": 1.1,
"position": [
2040,
120
],
"notesInFlow": false,
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"conditions": {
"string": [
{
"value1": "={{ $json.hash }}",
"operation": "notEqual",
"value2": "={{ $('GET HASH LAST TRX').item.json.hash }}"
},
{
"value1": "={{ $json.hash }}",
"operation": "isNotEmpty"
}
]
}
},
"id": "4e1355c9-ed55-4ae5-b2e5-5c0ae978497f",
"name": "NOT EQUAL HASH",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
1600,
360
]
},
{
"parameters": {
"conditions": {
"number": [
{
"value1": "={{ $json.notifications_count }}",
"value2": 3
}
]
}
},
"id": "bc92866b-1561-4ec7-a79a-09339f9e3472",
"name": "IF",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
1800,
380
]
},
{
"parameters": {
"chatId": "5217553853",
"text": "=\ud83d\udcb0New TRX\ud83d\udcb0 NTF #{{ $json.notifications_count+1}}\n\n\u26a0\ufe0fOn your Wallet new transaction, please check\u26a0\ufe0f\n\n\ud83d\udcb8 Hash: {{ $('GET HASH LAST TRX').item.json.hash }}\n\n\ud83e\ude99Wallet:0x19370b033d5e5613a05449cd2404ab768fd60615 ",
"additionalFields": {
"appendAttribution": false
}
},
"id": "e1cb0823-6e25-4f74-9cb1-de99d4ae2d0b",
"name": "Telegram1",
"type": "n8n-nodes-base.telegram",
"typeVersion": 1.1,
"position": [
2080,
360
],
"notesInFlow": false,
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "update",
"schema": {
"__rl": true,
"mode": "list",
"value": "public"
},
"table": {
"__rl": true,
"value": "etherscan_lst_trx",
"mode": "list",
"cachedResultName": "etherscan_lst_trx"
},
"columns": {
"mappingMode": "defineBelow",
"value": {
"id": "={{ $('NOT EQUAL HASH').item.json.id }}",
"hash": "={{ $('GET HASH LAST TRX').item.json.hash }}",
"notifications_count": "={{ $('IF').item.json.notifications_count + 1 }}"
},
"matchingColumns": [
"id"
],
"schema": [
{
"id": "hash",
"displayName": "hash",
"required": false,
"defaultMatch": false,
"display": true,
"type": "string",
"canBeUsedToMatch": true
},
{
"id": "notifications_count",
"displayName": "notifications_count",
"required": false,
"defaultMatch": false,
"display": true,
"type": "number",
"canBeUsedToMatch": true
},
{
"id": "id",
"displayName": "id",
"required": false,
"defaultMatch": true,
"display": true,
"type": "number",
"canBeUsedToMatch": true,
"removed": false
}
]
},
"options": {}
},
"id": "238e55a0-3965-44f5-8789-0901510cc184",
"name": "UPDATE NTF COUNT",
"type": "n8n-nodes-base.postgres",
"typeVersion": 2.3,
"position": [
2300,
360
],
"credentials": {
"postgres": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "update",
"schema": {
"__rl": true,
"mode": "list",
"value": "public"
},
"table": {
"__rl": true,
"value": "etherscan_lst_trx",
"mode": "list",
"cachedResultName": "etherscan_lst_trx"
},
"columns": {
"mappingMode": "defineBelow",
"value": {
"id": "={{ $('NOT EQUAL HASH').item.json.id }}",
"hash": "={{ $('GET HASH LAST TRX').item.json.hash }}",
"notifications_count": 1
},
"matchingColumns": [
"id"
],
"schema": [
{
"id": "hash",
"displayName": "hash",
"required": false,
"defaultMatch": false,
"display": true,
"type": "string",
"canBeUsedToMatch": true
},
{
"id": "notifications_count",
"displayName": "notifications_count",
"required": false,
"defaultMatch": false,
"display": true,
"type": "number",
"canBeUsedToMatch": true
},
{
"id": "id",
"displayName": "id",
"required": false,
"defaultMatch": true,
"display": true,
"type": "number",
"canBeUsedToMatch": true,
"removed": false
}
]
},
"options": {}
},
"id": "8fd673bd-8845-4891-b100-801e4660139c",
"name": "UPDATE HASH",
"type": "n8n-nodes-base.postgres",
"typeVersion": 2.3,
"position": [
2240,
120
],
"credentials": {
"postgres": {
"name": "<your credential>"
}
}
}
],
"settings": {
"executionOrder": "v1"
},
"shared": [
{
"createdAt": "2024-02-16T10:56:35.913Z",
"updatedAt": "2024-02-16T10:56:35.913Z",
"role": "workflow:owner",
"workflowId": "SkFhbaEH5IXQ3YbC",
"projectId": "1dpdX6PwTs6u06T1"
}
],
"staticData": {
"node:Schedule Trigger": {
"recurrencyRules": [],
"recurrenceRules": []
}
},
"tags": [],
"triggerCount": 1,
"updatedAt": "2024-05-23T11:03:00.000Z",
"versionId": "c9b6496d-673f-401e-9642-9ce4538fea4b"
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
httpQueryAuthpostgrestelegramApi
Pro
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About this workflow
ETHERSCAN. Uses httpRequest, postgres, telegram. Scheduled trigger; 10 nodes.
Source: https://github.com/RideSVEL/n8n-workflows/blob/61b7f35a8be1e3131f38e69ef7e9da1ec8973744/workflows/ETHERSCAN.json — original creator credit. Request a take-down →
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