> For the complete documentation index, see [llms.txt](https://nownodes.gitbook.io/core-core/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nownodes.gitbook.io/core-core/core-core/evm/eth_submitwork.md).

# Eth\_submitWork

## Submit proof-of-work solution

> Sends a JSON-RPC request to submit a mining proof-of-work solution.   If valid, the node accepts the solution.   If invalid, an error is returned.<br>

```json
{"openapi":"3.0.3","info":{"title":"eth_submitWork","version":"1.0.0"},"servers":[{"url":"https://core.nownodes.io"}],"security":[{"ApiKeyAuth":[]}],"components":{"securitySchemes":{"ApiKeyAuth":{"type":"apiKey","in":"header","name":"api-key"}}},"paths":{"/":{"post":{"tags":["eth_submitWork"],"summary":"Submit proof-of-work solution","description":"Sends a JSON-RPC request to submit a mining proof-of-work solution.   If valid, the node accepts the solution.   If invalid, an error is returned.\n","operationId":"ethSubmitWork","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["jsonrpc","method","params","id"],"properties":{"jsonrpc":{"type":"string"},"method":{"type":"string"},"params":{"type":"array","description":"Parameters for submitting proof-of-work:   - `nonce` (string) – 8-byte hex string   - `powHash` (string) – 32-byte hash of the block header   - `mixDigest` (string) – 32-byte hash used for verification\n","items":{"type":"string"}},"id":{"type":"integer"}}}}}},"responses":{"200":{"description":"Submission result","content":{"application/json":{"schema":{"type":"object","properties":{"jsonrpc":{"type":"string"},"id":{"type":"integer"},"result":{"type":"boolean","nullable":true,"description":"True if work was accepted, false otherwise."},"error":{"type":"object","nullable":true,"description":"Error details if submission failed.","properties":{"code":{"type":"integer"},"message":{"type":"string"}}}}}}}}}}}}}
```