API reference · Trust Fabric

Verify an Ed25519 signature against a registered principal

POST /fabric/identity/principals/{principal_id}/verify

Last reviewed 2026-10-03

POST /fabric/identity/principals/{principal_id}/verify

Parameters

Request body

SignatureVerify (required)

Responses

Try it

The request goes from your browser straight to this site. Your key is not stored unless you tick the box, and then only in this tab's session storage.

Code

curl -sS -X POST 'https://cainstudio.online/fabric/identity/principals/<principal_id>/verify' \
  -H "X-API-Key: $CAIN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"message": "message", "signature": "signature"}'

import json, os, urllib.request

req = urllib.request.Request('https://cainstudio.online/fabric/identity/principals/<principal_id>/verify', method='POST',
    headers={"X-API-Key": os.environ["CAIN_API_KEY"], "Content-Type": "application/json"},
    data=json.dumps({
      "message": "message",
      "signature": "signature"
    }).encode())
with urllib.request.urlopen(req, timeout=60) as r:
    print(r.status, json.load(r))

const res = await fetch("https://cainstudio.online/fabric/identity/principals/<principal_id>/verify", {
  method: "POST",
  headers: {
    "X-API-Key": process.env.CAIN_API_KEY!,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "message": "message",
    "signature": "signature"
  }),
});
console.log(res.status, await res.json());

Schemas used

HTTPValidationError · SignatureVerify · ValidationError

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