---
updatedAt: 2026-08-10T22:07:58.000Z
agentTools:
  projectIndex: https://docs.blockberry.one/llms.txt
---

# getLastVerificationKeyChange

Check when the queried account changed the verification key last time. Verification key change may be, although not necessarily, an indication of scam activity.

# OpenAPI definition

```json
{
  "openapi": "3.0.1",
  "info": {
    "title": "Mina Devnet API",
    "description": "Mina Devnet (testnet) public REST API by Minascan / Blockberry.",
    "termsOfService": "https://blockberry.one/terms",
    "contact": {
      "name": "Staketab tech support",
      "url": "https://staketab.com/",
      "email": "support@staketab.com"
    },
    "license": {
      "name": "Apache 2.0",
      "url": "https://www.apache.org/licenses/LICENSE-2.0"
    },
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://api.blockberry.one/mina-devnet",
      "description": "Production"
    }
  ],
  "security": [
    {
      "x-api-key": []
    }
  ],
  "paths": {
    "/v1/zkapps/{address}/last-verification-key-change": {
      "get": {
        "tags": [
          "ZkApps"
        ],
        "summary": "getLastVerificationKeyChange",
        "description": "Check when the queried account changed the verification key last time. Verification key change may be, although not necessarily, an indication of scam activity.",
        "operationId": "getLastVerificationKeyChange",
        "parameters": [
          {
            "name": "address",
            "in": "path",
            "description": "Enter full zkApp address",
            "required": true,
            "schema": {
              "type": "string",
              "description": "Enter full zkApp address",
              "default": "B62qoYZZ2Nhh5HuS8wPJnpWGxxrhrTpBcoR5iNQJxXm78PjSJeT1AZx"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "type": "integer",
                  "format": "int64"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "securitySchemes": {
      "x-api-key": {
        "type": "apiKey",
        "name": "x-api-key",
        "in": "header"
      }
    }
  }
}
```