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 →
{
"name": "Orquestador Multichain AcademicChain",
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "emitir-multichain",
"options": {}
},
"name": "Webhook_Entrada",
"type": "n8n-nodes-base.webhook",
"typeVersion": 1,
"position": [
0,
0
]
},
{
"parameters": {
"conditions": {
"string": [
{
"value1": "={{$json.headers['x-acl-auth-key']}}",
"operation": "equal",
"value2": "={{$env.ACL_AUTH_KEY}}"
}
]
}
},
"name": "Auth_Check",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
200,
0
]
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{\"error\": \"Unauthorized\"}",
"options": {
"responseCode": 401
}
},
"name": "Reject",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1,
"position": [
200,
200
]
},
{
"parameters": {
"jsCode": "const q = $json.query || {}; const b = $json.body || {}; const docHash = String(q.documentHash || b.documentHash || b.uniqueHash || '').trim(); const studentName = String(q.studentName || b.studentName || '').trim(); const pdfUrl = String(q.pdfUrl || b.pdfUrl || '').trim(); const pdfBase64 = String(q.pdfBase64 || b.pdfBase64 || '').trim(); let plan = String(q.plan || b.plan || '').toLowerCase().trim(); const uniqueHash = docHash || ('hash-'+Date.now()); const normalizePlan = (p)=>{ if(['triple','3','enterprise','ent','empresarial'].includes(p)) return 'triple'; if(['dual','2','professional','pro','profesional'].includes(p)) return 'dual'; if(['base','1','basic','esencial','essential'].includes(p)) return 'base'; return 'base'; }; const planNormalized = normalizePlan(plan); return { json: { uniqueHash, studentName, plan: planNormalized, originalPlan: plan || 'auto', pdfUrl, pdfBase64 } };"
},
"name": "Normalize Input",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
400,
0
]
},
{
"parameters": {
"conditions": {
"string": [
{
"value1": "={{$json.plan}}",
"operation": "equal",
"value2": "triple"
}
]
}
},
"name": "Is Triple",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
600,
-120
]
},
{
"parameters": {
"conditions": {
"string": [
{
"value1": "={{$json.plan}}",
"operation": "equal",
"value2": "dual"
}
]
}
},
"name": "Is Dual",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
600,
120
]
},
{
"parameters": {
"jsCode": "const tx = '0.0.' + (Math.floor(Math.random()*9000000)+1000000) + '@' + Date.now(); return { json: { ...$json, hederaTx: tx } };"
},
"name": "Hedera Issue",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
820,
-200
]
},
{
"parameters": {
"jsCode": "const x = 'xrpl-' + Math.random().toString(16).slice(2) + '-' + Date.now(); return { json: { ...$json, xrpTxHash: x } };"
},
"name": "XRP_Emit",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
820,
0
]
},
{
"parameters": {
"jsCode": "const a = 'algo-' + Math.random().toString(16).slice(2) + '-' + Date.now(); return { json: { ...$json, algoTxId: a } };"
},
"name": "Algorand_Emit",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
820,
200
]
},
{
"parameters": {
"mode": "combine",
"combination": "mergeByPosition"
},
"name": "Unir_Hashes",
"type": "n8n-nodes-base.merge",
"typeVersion": 1,
"position": [
1040,
0
]
},
{
"parameters": {
"jsCode": "const items = $items(); let h=null,x=null,a=null,base=null; for (const it of items) { const j = it.json||{}; if (j.hederaTx) h=j.hederaTx; if (j.xrpTxHash) x=j.xrpTxHash; if (j.algoTxId) a=j.algoTxId; if (j.uniqueHash && !base) base=j; } const out = { uniqueHash: base?.uniqueHash || $json.uniqueHash, studentName: base?.studentName || $json.studentName, externalProofs: {} }; if (h) out.externalProofs.hederaTx = h; if (x) out.externalProofs.xrpTxHash = x; if (a) out.externalProofs.algoTxId = a; out.hash_hedera = h || null; out.hash_xrp = x || null; out.hash_algo = a || null; const tokenId = (h && h.includes('@')) ? h.split('@')[0] : ('0.0.' + (Math.floor(Math.random()*9000000)+1000000)); out.tokenId = tokenId; out.serialNumber = '1'; out.universityId = null; out.studentAccountId = null; out.updatedAt = new Date().toISOString(); if (!out.createdAt) out.createdAt = out.updatedAt; return { json: out };"
},
"name": "Consolidate Proofs",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
1240,
0
]
},
{
"parameters": {
"conditions": {
"string": [
{
"value1": "={{$json.pdfUrl}}",
"operation": "isNotEmpty"
}
]
}
},
"name": "Has PDF",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
1320,
0
]
},
{
"parameters": {
"conditions": {
"string": [
{
"value1": "={{$json.pdfBase64}}",
"operation": "isNotEmpty"
}
]
}
},
"name": "Has Base64",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
1320,
120
]
},
{
"parameters": {
"url": "={{$json.pdfUrl}}",
"method": "GET",
"download": true
},
"name": "Fetch PDF",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
1400,
-120
]
},
{
"parameters": {
"jsCode": "const b64 = String($json.pdfBase64 || '').trim(); const clean = b64.includes(',') ? b64.split(',').pop() : b64; if (!clean) { return { json: $json }; } const buf = Buffer.from(clean, 'base64'); return { json: $json, binary: { file: { data: buf, mimeType: 'application/pdf', fileName: 'credential.pdf' } } };"
},
"name": "Create Binary (Base64)",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
1440,
120
]
},
{
"parameters": {
"mode": "move",
"options": {
"setAll": true
},
"sourceKey": "data",
"destinationKey": "file"
},
"name": "Prepare Binary",
"type": "n8n-nodes-base.moveBinaryData",
"typeVersion": 1,
"position": [
1500,
-120
]
},
{
"parameters": {
"url": "https://node.lighthouse.storage/api/v0/add",
"method": "POST",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "={{'Bearer ' + $env.FILECOIN_API_KEY}}"
}
]
},
"sendFormData": true,
"formDataParametersUi": {
"parameter": [
{
"name": "file",
"value": "={{$binary.file}}",
"type": "formBinary"
}
]
}
},
"name": "Upload File (Filecoin)",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
1600,
-120
]
},
{
"parameters": {
"jsCode": "const doc = { tokenId: $json.tokenId, serialNumber: $json.serialNumber || '1', universityId: $json.universityId || null, studentAccountId: $json.studentAccountId || null, uniqueHash: $json.uniqueHash, studentName: $json.studentName || null, externalProofs: $json.externalProofs || {}, createdAt: $json.createdAt || new Date().toISOString(), updatedAt: $json.updatedAt || new Date().toISOString() }; const jsonString = JSON.stringify(doc); const buf = Buffer.from(jsonString); return { json: doc, binary: { file: { data: buf.toString('base64'), mimeType: 'application/json', fileName: 'metadata.json' } } };"
},
"name": "Build Doc JSON",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
1360,
0
]
},
{
"parameters": {
"url": "https://node.lighthouse.storage/api/v0/add",
"method": "POST",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "={{'Bearer ' + $env.FILECOIN_API_KEY}}"
}
]
},
"sendFormData": true,
"formDataParametersUi": {
"parameter": [
{
"name": "file",
"value": "={{$binary.file}}",
"type": "formBinary"
}
]
}
},
"name": "Upload JSON (Filecoin)",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
1500,
0
]
},
{
"parameters": {
"jsCode": "let shaVal = null; const resp = $input.item.json || {}; const ipfsHash = resp.IpfsHash || resp.ipfsHash || resp.Hash || null; const ipfsURI = ipfsHash ? ('ipfs://' + ipfsHash) : null; const link = ipfsURI || (resp.pinata_url || null); const toHash = String(link || '').trim(); try { const crypto = require('crypto'); if (toHash) { shaVal = 'hash-' + crypto.createHash('sha256').update(toHash).digest('hex'); } } catch (e) { if (toHash) { let h = 0; for (let i = 0; i < toHash.length; i++) { h = ((h << 5) - h) + toHash.charCodeAt(i); h |= 0; } shaVal = 'hash-fallback-' + Math.abs(h).toString(16); } } const out = { ...$json, ipfsURI: ipfsURI || $json.ipfsURI || null, uniqueHash: shaVal || $json.uniqueHash, updatedAt: new Date().toISOString() }; return { json: out };"
},
"name": "Compute SHA256 Link",
"type": "n8n-nodes-base.code",
"typeVersion": 1,
"position": [
1700,
-40
]
},
{
"parameters": {
"url": "={{$env.API_URL || 'https://academicchain-ledger.onrender.com'}}/api/v1/credentials/issue-unified",
"method": "POST",
"sendHeaders": true,
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application/json"
},
{
"name": "X-API-Key",
"value": "={{$env.ACADEMIC_CHAIN_API_KEY || ''}}"
}
]
},
"sendBody": true,
"specifyBody": "json",
"jsonBody": "={ \"tokenId\": \"{{$json.tokenId}}\", \"uniqueHash\": \"{{$json.uniqueHash}}\", \"ipfsURI\": \"{{$json.ipfsURI}}\", \"studentName\": \"{{$json.studentName || ''}}\", \"degree\": \"{{$json.degree || $json.title || ''}}\", \"recipientAccountId\": \"{{$json.studentAccountId || ''}}\", \"plan\": \"{{$json.plan || 'base'}}\" }",
"options": {}
},
"name": "Issue Unified (Backend)",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
1880,
80
]
},
{
"parameters": {
"operation": "update",
"collection": "credentials",
"query": "={\"uniqueHash\": {{$json.uniqueHash}} }",
"fieldsUi": {
"field": [
{
"fieldName": "uniqueHash",
"fieldValue": "={{$json.uniqueHash}}"
},
{
"fieldName": "studentName",
"fieldValue": "={{$json.studentName}}"
},
{
"fieldName": "externalProofs",
"fieldValue": "={{$json.externalProofs}}"
},
{
"fieldName": "externalProofs.xrpTxHash",
"fieldValue": "={{$json.hash_xrp}}"
},
{
"fieldName": "externalProofs.hederaTx",
"fieldValue": "={{$json.hash_hedera}}"
},
{
"fieldName": "externalProofs.algoTxId",
"fieldValue": "={{$json.hash_algo}}"
},
{
"fieldName": "ipfsURI",
"fieldValue": "={{$json.ipfsURI}}"
},
{
"fieldName": "tokenId",
"fieldValue": "={{$json.tokenId}}"
},
{
"fieldName": "serialNumber",
"fieldValue": "={{$json.serialNumber || '1'}}"
},
{
"fieldName": "universityId",
"fieldValue": "={{$json.universityId}}"
},
{
"fieldName": "studentAccountId",
"fieldValue": "={{$json.studentAccountId}}"
},
{
"fieldName": "createdAt",
"fieldValue": "={{$json.createdAt}}"
},
{
"fieldName": "updatedAt",
"fieldValue": "={{$json.updatedAt}}"
}
]
},
"options": {
"upsert": true
}
},
"name": "Guardar_MongoDB_MultiChain",
"type": "n8n-nodes-base.mongoDb",
"typeVersion": 1,
"position": [
1860,
-40
],
"credentials": {
"mongoDb": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"respondWith": "json",
"responseBody": "{ \"success\": true, \"data\": {{$json}} }",
"options": {}
},
"name": "Respond",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1,
"position": [
2060,
-40
]
}
],
"connections": {
"Webhook_Entrada": {
"main": [
[
{
"node": "Auth_Check",
"type": "main",
"index": 0
}
]
]
},
"Auth_Check": {
"main": [
[
{
"node": "Normalize Input",
"type": "main",
"index": 0
}
],
[
{
"node": "Reject",
"type": "main",
"index": 0
}
]
]
},
"Normalize Input": {
"main": [
[
{
"node": "Is Triple",
"type": "main",
"index": 0
}
]
]
},
"Is Triple": {
"main": [
[
{
"node": "Hedera Issue",
"type": "main",
"index": 0
},
{
"node": "XRP_Emit",
"type": "main",
"index": 0
},
{
"node": "Algorand_Emit",
"type": "main",
"index": 0
}
],
[
{
"node": "Is Dual",
"type": "main",
"index": 0
}
]
]
},
"Is Dual": {
"main": [
[
{
"node": "Hedera Issue",
"type": "main",
"index": 0
},
{
"node": "XRP_Emit",
"type": "main",
"index": 0
}
],
[
{
"node": "Hedera Issue",
"type": "main",
"index": 0
}
]
]
},
"Hedera Issue": {
"main": [
[
{
"node": "Unir_Hashes",
"type": "main",
"index": 0
}
]
]
},
"XRP_Emit": {
"main": [
[
{
"node": "Unir_Hashes",
"type": "main",
"index": 1
}
]
]
},
"Algorand_Emit": {
"main": [
[
{
"node": "Unir_Hashes",
"type": "main",
"index": 2
}
]
]
},
"Unir_Hashes": {
"main": [
[
{
"node": "Consolidate Proofs",
"type": "main",
"index": 0
}
]
]
},
"Consolidate Proofs": {
"main": [
[
{
"node": "Has PDF",
"type": "main",
"index": 0
}
]
]
},
"Has PDF": {
"main": [
[
{
"node": "Fetch PDF",
"type": "main",
"index": 0
}
],
[
{
"node": "Has Base64",
"type": "main",
"index": 0
}
]
]
},
"Has Base64": {
"main": [
[
{
"node": "Create Binary (Base64)",
"type": "main",
"index": 0
}
],
[
{
"node": "Build Doc JSON",
"type": "main",
"index": 0
}
]
]
},
"Fetch PDF": {
"main": [
[
{
"node": "Prepare Binary",
"type": "main",
"index": 0
}
]
]
},
"Prepare Binary": {
"main": [
[
{
"node": "Upload File (Filecoin)",
"type": "main",
"index": 0
}
]
]
},
"Create Binary (Base64)": {
"main": [
[
{
"node": "Upload File (Filecoin)",
"type": "main",
"index": 0
}
]
]
},
"Upload File (Filecoin)": {
"main": [
[
{
"node": "Compute SHA256 Link",
"type": "main",
"index": 0
}
]
]
},
"Build Doc JSON": {
"main": [
[
{
"node": "Upload JSON (Filecoin)",
"type": "main",
"index": 0
}
]
]
},
"Upload JSON (Filecoin)": {
"main": [
[
{
"node": "Compute SHA256 Link",
"type": "main",
"index": 0
}
]
]
},
"Compute SHA256 Link": {
"main": [
[
{
"node": "Guardar_MongoDB_MultiChain",
"type": "main",
"index": 0
},
{
"node": "Issue Unified (Backend)",
"type": "main",
"index": 0
}
]
]
},
"Guardar_MongoDB_MultiChain": {
"main": [
[
{
"node": "Respond",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
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About this workflow
Orquestador Multichain AcademicChain. Uses httpRequest, moveBinaryData, mongoDb. Webhook trigger; 23 nodes.
Source: https://github.com/Aether-Connect-Labs/AcademicChain-Ledger/blob/main/n8n/workflows/multichain-orchestrator.json — original creator credit. Request a take-down →
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