Verify document authenticity with Claude and record proofs on blockchain

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

How It Works This workflow automates document authenticity verification by combining AI based content analysis with immutable blockchain records. It is built for compliance teams, legal departments...

Best for

Document Extraction automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.set, n8n-nodes-base.extractfromfile, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatanthropic, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.if, n8n-nodes-base.httprequest

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Cheng Siong Chin.

Original n8n.io source

1.1 Workflow description

Title: Verify document authenticity with Claude and record proofs on blockchain
Workflow name: Verify document authenticity with Claude and record proofs on blockchain

How It Works

This workflow automates document authenticity verification by combining AI-based content analysis with immutable blockchain records. It is built for compliance teams, legal departments, supply chain managers, and regulators who need tamper-proof validation and auditable proof. The solution addresses the challenge of detecting forged or altered documents while producing verifiable evidence that meets legal and regulatory standards. Documents are submitted via webhook and processed through PDF content extraction. Anthropic’s Claude analyzes the content for authenticity signals such as inconsistencies, anomalies, and formatting issues, returning structured authenticity scores. Verified documents trigger blockchain record creation and publication to a distributed ledger, with cryptographic proofs shared automatically with carriers and regulators through HTTP APIs.

Setup Steps

Configure webhook endpoint URL for document submission
Add Anthropic API key to Chat Model node for AI
Set up blockchain network credentials in HTTP nodes for record preparation
Connect Gmail account and specify compliance team email addresses
Customize authenticity thresholds

Prerequisites

Anthropic API key, blockchain network access and credentials

Use Cases

Supply chain documentation verification for import/export compliance

Customization

Adjust AI prompts for industry-specific authenticity criteria

Benefits

Eliminates manual document review time while improving fraud detection accuracy

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Document Submission Webhook

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 2.1

Block 2 - Workflow Configuration

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - Extract Document Content

Type / Role: n8n-nodes-base.extractFromFile - extractFromFile
Config choices: Version 1.1

Block 4 - Document Authenticity Validator

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 5 - Anthropic Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatAnthropic - lmChatAnthropic
Config choices: Version 1.3

Block 6 - Validation Result Parser

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 7 - Check Document Authenticity

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 8 - Publish to Blockchain

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 9 - Prepare Blockchain Record

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 10 - Flag Forged Document

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 11 - Send Proof to Carriers

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 12 - Send Proof to Regulatory Bodies

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 13 - Send Alert Email

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.2

Block 14 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 15 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 16 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 17 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 19 - Sticky Note5

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Verify document authenticity with Claude and record proofs on blockchain
Complexity	advanced
Nodes	19
Categories	Document Extraction, AI Summarization
Author	Cheng Siong Chin
Published	29 Dec 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/12276/12276.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows AI Summarization workflows

Frequently asked questions

What does Verify document authenticity with Claude and record proofs on blockchain do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction, AI Summarization use case.

Cheng Siong Chin

203 workflows

Nodes

n8n-nodes-base.webhook n8n-nodes-base.set n8n-nodes-base.extractfromfile @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatanthropic @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.if n8n-nodes-base.httprequest

Complexity

advanced

Published 29 Dec 2025

Likes 0

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Install path: /data/workflows/12276/12276.json

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Verify document authenticity with Claude and record proofs on blockchain

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How It Works

Setup Steps

Prerequisites

Use Cases

Customization

Benefits

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Document Submission Webhook

Block 2 - Workflow Configuration

Block 3 - Extract Document Content

Block 4 - Document Authenticity Validator

Block 5 - Anthropic Chat Model

Block 6 - Validation Result Parser

Block 7 - Check Document Authenticity

Block 8 - Publish to Blockchain

Block 9 - Prepare Blockchain Record

Block 10 - Flag Forged Document

Block 11 - Send Proof to Carriers

Block 12 - Send Proof to Regulatory Bodies

Block 13 - Send Alert Email

Block 14 - Sticky Note

Block 15 - Sticky Note1

Block 16 - Sticky Note2

Block 17 - Sticky Note3

Block 18 - Sticky Note4

Block 19 - Sticky Note5

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions